Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini: "ARM: - selftests improvements - large PUD support for HugeTLB - single-stepping fixes - improved tracing - various timer and vGIC fixes x86: - Processor Tracing virtualization - STIBP support - some correctness fixes - refactorings and splitting of vmx.c - use the Hyper-V range TLB flush hypercall - reduce order of vcpu struct - WBNOINVD support - do not use -ftrace for __noclone functions - nested guest support for PAUSE filtering on AMD - more Hyper-V enlightenments (direct mode for synthetic timers) PPC: - nested VFIO s390: - bugfixes only this time" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (171 commits) KVM: x86: Add CPUID support for new instruction WBNOINVD kvm: selftests: ucall: fix exit mmio address guessing Revert "compiler-gcc: disable -ftracer for __noclone functions" KVM: VMX: Move VM-Enter + VM-Exit handling to non-inline sub-routines KVM: VMX: Explicitly reference RCX as the vmx_vcpu pointer in asm blobs KVM: x86: Use jmp to invoke kvm_spurious_fault() from .fixup MAINTAINERS: Add arch/x86/kvm sub-directories to existing KVM/x86 entry KVM/x86: Use SVM assembly instruction mnemonics instead of .byte streams KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() KVM/MMU: Flush tlb directly in kvm_set_pte_rmapp() KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() KVM: Make kvm_set_spte_hva() return int KVM: Replace old tlb flush function with new one to flush a specified range. KVM/MMU: Add tlb flush with range helper function KVM/VMX: Add hv tlb range flush support x86/hyper-v: Add HvFlushGuestAddressList hypercall support KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops KVM: x86: Disable Intel PT when VMXON in L1 guest KVM: x86: Set intercept for Intel PT MSRs read/write KVM: x86: Implement Intel PT MSRs read/write emulation ...
author: Linus Torvalds 2018-12-26 11:46:28 -0800
committer: Linus Torvalds 2018-12-26 11:46:28 -0800
commit: 42b00f122cfbfed79fc29b0b3610f3abbb1e3864 (patch)
tree: c110a18c03e9ada45b6f3593843f0a06b36773dc /arch/x86
parent: 460023a5d1d2aa0f733b6708b2fae5ea9f9dfec0 (diff)
parent: a0aea130afebcd091d5396d13f25b9da24c9144a (diff)
39 files changed, 17118 insertions, 15682 deletions
diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 3a0aa83cbd07..9494ca68fd9d 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -68,6 +68,7 @@ static struct pt_cap_desc {
 	PT_CAP(topa_output,		0, CPUID_ECX, BIT(0)),
 	PT_CAP(topa_multiple_entries,	0, CPUID_ECX, BIT(1)),
 	PT_CAP(single_range_output,	0, CPUID_ECX, BIT(2)),
+	PT_CAP(output_subsys,		0, CPUID_ECX, BIT(3)),
 	PT_CAP(payloads_lip,		0, CPUID_ECX, BIT(31)),
 	PT_CAP(num_address_ranges,	1, CPUID_EAX, 0x3),
 	PT_CAP(mtc_periods,		1, CPUID_EAX, 0xffff0000),
@@ -75,14 +76,21 @@ static struct pt_cap_desc {
 	PT_CAP(psb_periods,		1, CPUID_EBX, 0xffff0000),
 };
 
-static u32 pt_cap_get(enum pt_capabilities cap)
+u32 intel_pt_validate_cap(u32 *caps, enum pt_capabilities capability)
 {
-	struct pt_cap_desc *cd = &pt_caps[cap];
-	u32 c = pt_pmu.caps[cd->leaf * PT_CPUID_REGS_NUM + cd->reg];
+	struct pt_cap_desc *cd = &pt_caps[capability];
+	u32 c = caps[cd->leaf * PT_CPUID_REGS_NUM + cd->reg];
 	unsigned int shift = __ffs(cd->mask);
 
 	return (c & cd->mask) >> shift;
 }
+EXPORT_SYMBOL_GPL(intel_pt_validate_cap);
+
+u32 intel_pt_validate_hw_cap(enum pt_capabilities cap)
+{
+	return intel_pt_validate_cap(pt_pmu.caps, cap);
+}
+EXPORT_SYMBOL_GPL(intel_pt_validate_hw_cap);
 
 static ssize_t pt_cap_show(struct device *cdev,
 			   struct device_attribute *attr,
@@ -92,7 +100,7 @@ static ssize_t pt_cap_show(struct device *cdev,
 		container_of(attr, struct dev_ext_attribute, attr);
 	enum pt_capabilities cap = (long)ea->var;
 
-	return snprintf(buf, PAGE_SIZE, "%x\n", pt_cap_get(cap));
+	return snprintf(buf, PAGE_SIZE, "%x\n", intel_pt_validate_hw_cap(cap));
 }
 
 static struct attribute_group pt_cap_group __ro_after_init = {
@@ -310,16 +318,16 @@ static bool pt_event_valid(struct perf_event *event)
 		return false;
 
 	if (config & RTIT_CTL_CYC_PSB) {
-		if (!pt_cap_get(PT_CAP_psb_cyc))
+		if (!intel_pt_validate_hw_cap(PT_CAP_psb_cyc))
 			return false;
 
-		allowed = pt_cap_get(PT_CAP_psb_periods);
+		allowed = intel_pt_validate_hw_cap(PT_CAP_psb_periods);
 		requested = (config & RTIT_CTL_PSB_FREQ) >>
 			RTIT_CTL_PSB_FREQ_OFFSET;
 		if (requested && (!(allowed & BIT(requested))))
 			return false;
 
-		allowed = pt_cap_get(PT_CAP_cycle_thresholds);
+		allowed = intel_pt_validate_hw_cap(PT_CAP_cycle_thresholds);
 		requested = (config & RTIT_CTL_CYC_THRESH) >>
 			RTIT_CTL_CYC_THRESH_OFFSET;
 		if (requested && (!(allowed & BIT(requested))))
@@ -334,10 +342,10 @@ static bool pt_event_valid(struct perf_event *event)
 		 * Spec says that setting mtc period bits while mtc bit in
 		 * CPUID is 0 will #GP, so better safe than sorry.
 		 */
-		if (!pt_cap_get(PT_CAP_mtc))
+		if (!intel_pt_validate_hw_cap(PT_CAP_mtc))
 			return false;
 
-		allowed = pt_cap_get(PT_CAP_mtc_periods);
+		allowed = intel_pt_validate_hw_cap(PT_CAP_mtc_periods);
 		if (!allowed)
 			return false;
 
@@ -349,11 +357,11 @@ static bool pt_event_valid(struct perf_event *event)
 	}
 
 	if (config & RTIT_CTL_PWR_EVT_EN &&
-	    !pt_cap_get(PT_CAP_power_event_trace))
+	    !intel_pt_validate_hw_cap(PT_CAP_power_event_trace))
 		return false;
 
 	if (config & RTIT_CTL_PTW) {
-		if (!pt_cap_get(PT_CAP_ptwrite))
+		if (!intel_pt_validate_hw_cap(PT_CAP_ptwrite))
 			return false;
 
 		/* FUPonPTW without PTW doesn't make sense */
@@ -598,7 +606,7 @@ static struct topa *topa_alloc(int cpu, gfp_t gfp)
 	 * In case of singe-entry ToPA, always put the self-referencing END
 	 * link as the 2nd entry in the table
 	 */
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries)) {
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries)) {
 		TOPA_ENTRY(topa, 1)->base = topa->phys >> TOPA_SHIFT;
 		TOPA_ENTRY(topa, 1)->end = 1;
 	}
@@ -638,7 +646,7 @@ static void topa_insert_table(struct pt_buffer *buf, struct topa *topa)
 	topa->offset = last->offset + last->size;
 	buf->last = topa;
 
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries))
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries))
 		return;
 
 	BUG_ON(last->last != TENTS_PER_PAGE - 1);
@@ -654,7 +662,7 @@ static void topa_insert_table(struct pt_buffer *buf, struct topa *topa)
 static bool topa_table_full(struct topa *topa)
 {
 	/* single-entry ToPA is a special case */
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries))
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries))
 		return !!topa->last;
 
 	return topa->last == TENTS_PER_PAGE - 1;
@@ -690,7 +698,8 @@ static int topa_insert_pages(struct pt_buffer *buf, gfp_t gfp)
 
 	TOPA_ENTRY(topa, -1)->base = page_to_phys(p) >> TOPA_SHIFT;
 	TOPA_ENTRY(topa, -1)->size = order;
-	if (!buf->snapshot && !pt_cap_get(PT_CAP_topa_multiple_entries)) {
+	if (!buf->snapshot &&
+	    !intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries)) {
 		TOPA_ENTRY(topa, -1)->intr = 1;
 		TOPA_ENTRY(topa, -1)->stop = 1;
 	}
@@ -725,7 +734,7 @@ static void pt_topa_dump(struct pt_buffer *buf)
 				 topa->table[i].intr ? 'I' : ' ',
 				 topa->table[i].stop ? 'S' : ' ',
 				 *(u64 *)&topa->table[i]);
-			if ((pt_cap_get(PT_CAP_topa_multiple_entries) &&
+			if ((intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries) &&
 			     topa->table[i].stop) ||
 			    topa->table[i].end)
 				break;
@@ -828,7 +837,7 @@ static void pt_handle_status(struct pt *pt)
 		 * means we are already losing data; need to let the decoder
 		 * know.
 		 */
-		if (!pt_cap_get(PT_CAP_topa_multiple_entries) ||
+		if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries) ||
 		    buf->output_off == sizes(TOPA_ENTRY(buf->cur, buf->cur_idx)->size)) {
 			perf_aux_output_flag(&pt->handle,
 			                     PERF_AUX_FLAG_TRUNCATED);
@@ -840,7 +849,8 @@ static void pt_handle_status(struct pt *pt)
 	 * Also on single-entry ToPA implementations, interrupt will come
 	 * before the output reaches its output region's boundary.
 	 */
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries) && !buf->snapshot &&
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries) &&
+	    !buf->snapshot &&
 	    pt_buffer_region_size(buf) - buf->output_off <= TOPA_PMI_MARGIN) {
 		void *head = pt_buffer_region(buf);
 
@@ -931,7 +941,7 @@ static int pt_buffer_reset_markers(struct pt_buffer *buf,
 
 
 	/* single entry ToPA is handled by marking all regions STOP=1 INT=1 */
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries))
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries))
 		return 0;
 
 	/* clear STOP and INT from current entry */
@@ -1082,7 +1092,7 @@ static int pt_buffer_init_topa(struct pt_buffer *buf, unsigned long nr_pages,
 	pt_buffer_setup_topa_index(buf);
 
 	/* link last table to the first one, unless we're double buffering */
-	if (pt_cap_get(PT_CAP_topa_multiple_entries)) {
+	if (intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries)) {
 		TOPA_ENTRY(buf->last, -1)->base = buf->first->phys >> TOPA_SHIFT;
 		TOPA_ENTRY(buf->last, -1)->end = 1;
 	}
@@ -1153,7 +1163,7 @@ static int pt_addr_filters_init(struct perf_event *event)
 	struct pt_filters *filters;
 	int node = event->cpu == -1 ? -1 : cpu_to_node(event->cpu);
 
-	if (!pt_cap_get(PT_CAP_num_address_ranges))
+	if (!intel_pt_validate_hw_cap(PT_CAP_num_address_ranges))
 		return 0;
 
 	filters = kzalloc_node(sizeof(struct pt_filters), GFP_KERNEL, node);
@@ -1202,7 +1212,7 @@ static int pt_event_addr_filters_validate(struct list_head *filters)
 				return -EINVAL;
 		}
 
-		if (++range > pt_cap_get(PT_CAP_num_address_ranges))
+		if (++range > intel_pt_validate_hw_cap(PT_CAP_num_address_ranges))
 			return -EOPNOTSUPP;
 	}
 
@@ -1507,12 +1517,12 @@ static __init int pt_init(void)
 	if (ret)
 		return ret;
 
-	if (!pt_cap_get(PT_CAP_topa_output)) {
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_output)) {
 		pr_warn("ToPA output is not supported on this CPU\n");
 		return -ENODEV;
 	}
 
-	if (!pt_cap_get(PT_CAP_topa_multiple_entries))
+	if (!intel_pt_validate_hw_cap(PT_CAP_topa_multiple_entries))
 		pt_pmu.pmu.capabilities =
 			PERF_PMU_CAP_AUX_NO_SG | PERF_PMU_CAP_AUX_SW_DOUBLEBUF;
 
@@ -1530,7 +1540,7 @@ static __init int pt_init(void)
 	pt_pmu.pmu.addr_filters_sync     = pt_event_addr_filters_sync;
 	pt_pmu.pmu.addr_filters_validate = pt_event_addr_filters_validate;
 	pt_pmu.pmu.nr_addr_filters       =
-		pt_cap_get(PT_CAP_num_address_ranges);
+		intel_pt_validate_hw_cap(PT_CAP_num_address_ranges);
 
 	ret = perf_pmu_register(&pt_pmu.pmu, "intel_pt", -1);
 
diff --git a/arch/x86/events/intel/pt.h b/arch/x86/events/intel/pt.h
index 0eb41d07b79a..269e15a9086c 100644
--- a/arch/x86/events/intel/pt.h
+++ b/arch/x86/events/intel/pt.h
@@ -20,43 +20,6 @@
 #define __INTEL_PT_H__
 
 /*
- * PT MSR bit definitions
- */
-#define RTIT_CTL_TRACEEN		BIT(0)
-#define RTIT_CTL_CYCLEACC		BIT(1)
-#define RTIT_CTL_OS			BIT(2)
-#define RTIT_CTL_USR			BIT(3)
-#define RTIT_CTL_PWR_EVT_EN		BIT(4)
-#define RTIT_CTL_FUP_ON_PTW		BIT(5)
-#define RTIT_CTL_CR3EN			BIT(7)
-#define RTIT_CTL_TOPA			BIT(8)
-#define RTIT_CTL_MTC_EN			BIT(9)
-#define RTIT_CTL_TSC_EN			BIT(10)
-#define RTIT_CTL_DISRETC		BIT(11)
-#define RTIT_CTL_PTW_EN			BIT(12)
-#define RTIT_CTL_BRANCH_EN		BIT(13)
-#define RTIT_CTL_MTC_RANGE_OFFSET	14
-#define RTIT_CTL_MTC_RANGE		(0x0full << RTIT_CTL_MTC_RANGE_OFFSET)
-#define RTIT_CTL_CYC_THRESH_OFFSET	19
-#define RTIT_CTL_CYC_THRESH		(0x0full << RTIT_CTL_CYC_THRESH_OFFSET)
-#define RTIT_CTL_PSB_FREQ_OFFSET	24
-#define RTIT_CTL_PSB_FREQ      		(0x0full << RTIT_CTL_PSB_FREQ_OFFSET)
-#define RTIT_CTL_ADDR0_OFFSET		32
-#define RTIT_CTL_ADDR0      		(0x0full << RTIT_CTL_ADDR0_OFFSET)
-#define RTIT_CTL_ADDR1_OFFSET		36
-#define RTIT_CTL_ADDR1      		(0x0full << RTIT_CTL_ADDR1_OFFSET)
-#define RTIT_CTL_ADDR2_OFFSET		40
-#define RTIT_CTL_ADDR2      		(0x0full << RTIT_CTL_ADDR2_OFFSET)
-#define RTIT_CTL_ADDR3_OFFSET		44
-#define RTIT_CTL_ADDR3      		(0x0full << RTIT_CTL_ADDR3_OFFSET)
-#define RTIT_STATUS_FILTEREN		BIT(0)
-#define RTIT_STATUS_CONTEXTEN		BIT(1)
-#define RTIT_STATUS_TRIGGEREN		BIT(2)
-#define RTIT_STATUS_BUFFOVF		BIT(3)
-#define RTIT_STATUS_ERROR		BIT(4)
-#define RTIT_STATUS_STOPPED		BIT(5)
-
-/*
  * Single-entry ToPA: when this close to region boundary, switch
  * buffers to avoid losing data.
  */
@@ -82,30 +45,9 @@ struct topa_entry {
 	u64	rsvd4	: 16;
 };
 
-#define PT_CPUID_LEAVES		2
-#define PT_CPUID_REGS_NUM	4 /* number of regsters (eax, ebx, ecx, edx) */
-
 /* TSC to Core Crystal Clock Ratio */
 #define CPUID_TSC_LEAF		0x15
 
-enum pt_capabilities {
-	PT_CAP_max_subleaf = 0,
-	PT_CAP_cr3_filtering,
-	PT_CAP_psb_cyc,
-	PT_CAP_ip_filtering,
-	PT_CAP_mtc,
-	PT_CAP_ptwrite,
-	PT_CAP_power_event_trace,
-	PT_CAP_topa_output,
-	PT_CAP_topa_multiple_entries,
-	PT_CAP_single_range_output,
-	PT_CAP_payloads_lip,
-	PT_CAP_num_address_ranges,
-	PT_CAP_mtc_periods,
-	PT_CAP_cycle_thresholds,
-	PT_CAP_psb_periods,
-};
-
 struct pt_pmu {
 	struct pmu		pmu;
 	u32			caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES];
diff --git a/arch/x86/hyperv/nested.c b/arch/x86/hyperv/nested.c
index b8e60cc50461..dd0a843f766d 100644
--- a/arch/x86/hyperv/nested.c
+++ b/arch/x86/hyperv/nested.c
@@ -7,6 +7,7 @@
  *
  * Author : Lan Tianyu <Tianyu.Lan@microsoft.com>
  */
+#define pr_fmt(fmt)  "Hyper-V: " fmt
 
 
 #include <linux/types.h>
@@ -54,3 +55,82 @@ fault:
 	return ret;
 }
 EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping);
+
+int hyperv_fill_flush_guest_mapping_list(
+		struct hv_guest_mapping_flush_list *flush,
+		u64 start_gfn, u64 pages)
+{
+	u64 cur = start_gfn;
+	u64 additional_pages;
+	int gpa_n = 0;
+
+	do {
+		/*
+		 * If flush requests exceed max flush count, go back to
+		 * flush tlbs without range.
+		 */
+		if (gpa_n >= HV_MAX_FLUSH_REP_COUNT)
+			return -ENOSPC;
+
+		additional_pages = min_t(u64, pages, HV_MAX_FLUSH_PAGES) - 1;
+
+		flush->gpa_list[gpa_n].page.additional_pages = additional_pages;
+		flush->gpa_list[gpa_n].page.largepage = false;
+		flush->gpa_list[gpa_n].page.basepfn = cur;
+
+		pages -= additional_pages + 1;
+		cur += additional_pages + 1;
+		gpa_n++;
+	} while (pages > 0);
+
+	return gpa_n;
+}
+EXPORT_SYMBOL_GPL(hyperv_fill_flush_guest_mapping_list);
+
+int hyperv_flush_guest_mapping_range(u64 as,
+		hyperv_fill_flush_list_func fill_flush_list_func, void *data)
+{
+	struct hv_guest_mapping_flush_list **flush_pcpu;
+	struct hv_guest_mapping_flush_list *flush;
+	u64 status = 0;
+	unsigned long flags;
+	int ret = -ENOTSUPP;
+	int gpa_n = 0;
+
+	if (!hv_hypercall_pg || !fill_flush_list_func)
+		goto fault;
+
+	local_irq_save(flags);
+
+	flush_pcpu = (struct hv_guest_mapping_flush_list **)
+		this_cpu_ptr(hyperv_pcpu_input_arg);
+
+	flush = *flush_pcpu;
+	if (unlikely(!flush)) {
+		local_irq_restore(flags);
+		goto fault;
+	}
+
+	flush->address_space = as;
+	flush->flags = 0;
+
+	gpa_n = fill_flush_list_func(flush, data);
+	if (gpa_n < 0) {
+		local_irq_restore(flags);
+		goto fault;
+	}
+
+	status = hv_do_rep_hypercall(HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST,
+				     gpa_n, 0, flush, NULL);
+
+	local_irq_restore(flags);
+
+	if (!(status & HV_HYPERCALL_RESULT_MASK))
+		ret = 0;
+	else
+		ret = status;
+fault:
+	trace_hyperv_nested_flush_guest_mapping_range(as, ret);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping_range);
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index df8e94e2f7be..6d6122524711 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -281,6 +281,7 @@
 #define X86_FEATURE_CLZERO		(13*32+ 0) /* CLZERO instruction */
 #define X86_FEATURE_IRPERF		(13*32+ 1) /* Instructions Retired Count */
 #define X86_FEATURE_XSAVEERPTR		(13*32+ 2) /* Always save/restore FP error pointers */
+#define X86_FEATURE_WBNOINVD		(13*32+ 9) /* WBNOINVD instruction */
 #define X86_FEATURE_AMD_IBPB		(13*32+12) /* "" Indirect Branch Prediction Barrier */
 #define X86_FEATURE_AMD_IBRS		(13*32+14) /* "" Indirect Branch Restricted Speculation */
 #define X86_FEATURE_AMD_STIBP		(13*32+15) /* "" Single Thread Indirect Branch Predictors */
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 4139f7650fe5..705dafc2d11a 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -10,6 +10,7 @@
 #define _ASM_X86_HYPERV_TLFS_H
 
 #include <linux/types.h>
+#include <asm/page.h>
 
 /*
  * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
@@ -30,158 +31,150 @@
 /*
  * Feature identification. EAX indicates which features are available
  * to the partition based upon the current partition privileges.
+ * These are HYPERV_CPUID_FEATURES.EAX bits.
  */
 
 /* VP Runtime (HV_X64_MSR_VP_RUNTIME) available */
-#define HV_X64_MSR_VP_RUNTIME_AVAILABLE		(1 << 0)
+#define HV_X64_MSR_VP_RUNTIME_AVAILABLE		BIT(0)
 /* Partition Reference Counter (HV_X64_MSR_TIME_REF_COUNT) available*/
-#define HV_MSR_TIME_REF_COUNT_AVAILABLE		(1 << 1)
-/* Partition reference TSC MSR is available */
-#define HV_MSR_REFERENCE_TSC_AVAILABLE		(1 << 9)
-/* Partition Guest IDLE MSR is available */
-#define HV_X64_MSR_GUEST_IDLE_AVAILABLE		(1 << 10)
-
-/* A partition's reference time stamp counter (TSC) page */
-#define HV_X64_MSR_REFERENCE_TSC		0x40000021
-
-/*
- * There is a single feature flag that signifies if the partition has access
- * to MSRs with local APIC and TSC frequencies.
- */
-#define HV_X64_ACCESS_FREQUENCY_MSRS		(1 << 11)
-
-/* AccessReenlightenmentControls privilege */
-#define HV_X64_ACCESS_REENLIGHTENMENT		BIT(13)
-
+#define HV_MSR_TIME_REF_COUNT_AVAILABLE		BIT(1)
 /*
  * Basic SynIC MSRs (HV_X64_MSR_SCONTROL through HV_X64_MSR_EOM
  * and HV_X64_MSR_SINT0 through HV_X64_MSR_SINT15) available
  */
-#define HV_X64_MSR_SYNIC_AVAILABLE		(1 << 2)
+#define HV_X64_MSR_SYNIC_AVAILABLE		BIT(2)
 /*
  * Synthetic Timer MSRs (HV_X64_MSR_STIMER0_CONFIG through
  * HV_X64_MSR_STIMER3_COUNT) available
  */
-#define HV_MSR_SYNTIMER_AVAILABLE		(1 << 3)
+#define HV_MSR_SYNTIMER_AVAILABLE		BIT(3)
 /*
  * APIC access MSRs (HV_X64_MSR_EOI, HV_X64_MSR_ICR and HV_X64_MSR_TPR)
  * are available
  */
-#define HV_X64_MSR_APIC_ACCESS_AVAILABLE	(1 << 4)
+#define HV_X64_MSR_APIC_ACCESS_AVAILABLE	BIT(4)
 /* Hypercall MSRs (HV_X64_MSR_GUEST_OS_ID and HV_X64_MSR_HYPERCALL) available*/
-#define HV_X64_MSR_HYPERCALL_AVAILABLE		(1 << 5)
+#define HV_X64_MSR_HYPERCALL_AVAILABLE		BIT(5)
 /* Access virtual processor index MSR (HV_X64_MSR_VP_INDEX) available*/
-#define HV_X64_MSR_VP_INDEX_AVAILABLE		(1 << 6)
+#define HV_X64_MSR_VP_INDEX_AVAILABLE		BIT(6)
 /* Virtual system reset MSR (HV_X64_MSR_RESET) is available*/
-#define HV_X64_MSR_RESET_AVAILABLE		(1 << 7)
- /*
-  * Access statistics pages MSRs (HV_X64_MSR_STATS_PARTITION_RETAIL_PAGE,
-  * HV_X64_MSR_STATS_PARTITION_INTERNAL_PAGE, HV_X64_MSR_STATS_VP_RETAIL_PAGE,
-  * HV_X64_MSR_STATS_VP_INTERNAL_PAGE) available
-  */
-#define HV_X64_MSR_STAT_PAGES_AVAILABLE		(1 << 8)
-
-/* Frequency MSRs available */
-#define HV_FEATURE_FREQUENCY_MSRS_AVAILABLE	(1 << 8)
-
-/* Crash MSR available */
-#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE (1 << 10)
-
-/* stimer Direct Mode is available */
-#define HV_STIMER_DIRECT_MODE_AVAILABLE		(1 << 19)
+#define HV_X64_MSR_RESET_AVAILABLE		BIT(7)
+/*
+ * Access statistics pages MSRs (HV_X64_MSR_STATS_PARTITION_RETAIL_PAGE,
+ * HV_X64_MSR_STATS_PARTITION_INTERNAL_PAGE, HV_X64_MSR_STATS_VP_RETAIL_PAGE,
+ * HV_X64_MSR_STATS_VP_INTERNAL_PAGE) available
+ */
+#define HV_X64_MSR_STAT_PAGES_AVAILABLE		BIT(8)
+/* Partition reference TSC MSR is available */
+#define HV_MSR_REFERENCE_TSC_AVAILABLE		BIT(9)
+/* Partition Guest IDLE MSR is available */
+#define HV_X64_MSR_GUEST_IDLE_AVAILABLE		BIT(10)
+/*
+ * There is a single feature flag that signifies if the partition has access
+ * to MSRs with local APIC and TSC frequencies.
+ */
+#define HV_X64_ACCESS_FREQUENCY_MSRS		BIT(11)
+/* AccessReenlightenmentControls privilege */
+#define HV_X64_ACCESS_REENLIGHTENMENT		BIT(13)
 
 /*
- * Feature identification: EBX indicates which flags were specified at
- * partition creation. The format is the same as the partition creation
- * flag structure defined in section Partition Creation Flags.
+ * Feature identification: indicates which flags were specified at partition
+ * creation. The format is the same as the partition creation flag structure
+ * defined in section Partition Creation Flags.
+ * These are HYPERV_CPUID_FEATURES.EBX bits.
  */
-#define HV_X64_CREATE_PARTITIONS		(1 << 0)
-#define HV_X64_ACCESS_PARTITION_ID		(1 << 1)
-#define HV_X64_ACCESS_MEMORY_POOL		(1 << 2)
-#define HV_X64_ADJUST_MESSAGE_BUFFERS		(1 << 3)
-#define HV_X64_POST_MESSAGES			(1 << 4)
-#define HV_X64_SIGNAL_EVENTS			(1 << 5)
-#define HV_X64_CREATE_PORT			(1 << 6)
-#define HV_X64_CONNECT_PORT			(1 << 7)
-#define HV_X64_ACCESS_STATS			(1 << 8)
-#define HV_X64_DEBUGGING			(1 << 11)
-#define HV_X64_CPU_POWER_MANAGEMENT		(1 << 12)
-#define HV_X64_CONFIGURE_PROFILER		(1 << 13)
+#define HV_X64_CREATE_PARTITIONS		BIT(0)
+#define HV_X64_ACCESS_PARTITION_ID		BIT(1)
+#define HV_X64_ACCESS_MEMORY_POOL		BIT(2)
+#define HV_X64_ADJUST_MESSAGE_BUFFERS		BIT(3)
+#define HV_X64_POST_MESSAGES			BIT(4)
+#define HV_X64_SIGNAL_EVENTS			BIT(5)
+#define HV_X64_CREATE_PORT			BIT(6)
+#define HV_X64_CONNECT_PORT			BIT(7)
+#define HV_X64_ACCESS_STATS			BIT(8)
+#define HV_X64_DEBUGGING			BIT(11)
+#define HV_X64_CPU_POWER_MANAGEMENT		BIT(12)
 
 /*
  * Feature identification. EDX indicates which miscellaneous features
  * are available to the partition.
+ * These are HYPERV_CPUID_FEATURES.EDX bits.
  */
 /* The MWAIT instruction is available (per section MONITOR / MWAIT) */
-#define HV_X64_MWAIT_AVAILABLE				(1 << 0)
+#define HV_X64_MWAIT_AVAILABLE				BIT(0)
 /* Guest debugging support is available */
-#define HV_X64_GUEST_DEBUGGING_AVAILABLE		(1 << 1)
+#define HV_X64_GUEST_DEBUGGING_AVAILABLE		BIT(1)
 /* Performance Monitor support is available*/
-#define HV_X64_PERF_MONITOR_AVAILABLE			(1 << 2)
+#define HV_X64_PERF_MONITOR_AVAILABLE			BIT(2)
 /* Support for physical CPU dynamic partitioning events is available*/
-#define HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE	(1 << 3)
+#define HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE	BIT(3)
 /*
  * Support for passing hypercall input parameter block via XMM
  * registers is available
  */
-#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE		(1 << 4)
+#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE		BIT(4)
 /* Support for a virtual guest idle state is available */
-#define HV_X64_GUEST_IDLE_STATE_AVAILABLE		(1 << 5)
-/* Guest crash data handler available */
-#define HV_X64_GUEST_CRASH_MSR_AVAILABLE		(1 << 10)
+#define HV_X64_GUEST_IDLE_STATE_AVAILABLE		BIT(5)
+/* Frequency MSRs available */
+#define HV_FEATURE_FREQUENCY_MSRS_AVAILABLE		BIT(8)
+/* Crash MSR available */
+#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE		BIT(10)
+/* stimer Direct Mode is available */
+#define HV_STIMER_DIRECT_MODE_AVAILABLE			BIT(19)
 
 /*
  * Implementation recommendations. Indicates which behaviors the hypervisor
  * recommends the OS implement for optimal performance.
+ * These are HYPERV_CPUID_ENLIGHTMENT_INFO.EAX bits.
+ */
+/*
+ * Recommend using hypercall for address space switches rather
+ * than MOV to CR3 instruction
  */
- /*
-  * Recommend using hypercall for address space switches rather
-  * than MOV to CR3 instruction
-  */
-#define HV_X64_AS_SWITCH_RECOMMENDED		(1 << 0)
+#define HV_X64_AS_SWITCH_RECOMMENDED			BIT(0)
 /* Recommend using hypercall for local TLB flushes rather
  * than INVLPG or MOV to CR3 instructions */
-#define HV_X64_LOCAL_TLB_FLUSH_RECOMMENDED	(1 << 1)
+#define HV_X64_LOCAL_TLB_FLUSH_RECOMMENDED		BIT(1)
 /*
  * Recommend using hypercall for remote TLB flushes rather
  * than inter-processor interrupts
  */
-#define HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED	(1 << 2)
+#define HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED		BIT(2)
 /*
  * Recommend using MSRs for accessing APIC registers
  * EOI, ICR and TPR rather than their memory-mapped counterparts
  */
-#define HV_X64_APIC_ACCESS_RECOMMENDED		(1 << 3)
+#define HV_X64_APIC_ACCESS_RECOMMENDED			BIT(3)
 /* Recommend using the hypervisor-provided MSR to initiate a system RESET */
-#define HV_X64_SYSTEM_RESET_RECOMMENDED		(1 << 4)
+#define HV_X64_SYSTEM_RESET_RECOMMENDED			BIT(4)
 /*
  * Recommend using relaxed timing for this partition. If used,
  * the VM should disable any watchdog timeouts that rely on the
  * timely delivery of external interrupts
  */
-#define HV_X64_RELAXED_TIMING_RECOMMENDED	(1 << 5)
+#define HV_X64_RELAXED_TIMING_RECOMMENDED		BIT(5)
 
 /*
  * Recommend not using Auto End-Of-Interrupt feature
  */
-#define HV_DEPRECATING_AEOI_RECOMMENDED		(1 << 9)
+#define HV_DEPRECATING_AEOI_RECOMMENDED			BIT(9)
 
 /*
  * Recommend using cluster IPI hypercalls.
  */
-#define HV_X64_CLUSTER_IPI_RECOMMENDED         (1 << 10)
+#define HV_X64_CLUSTER_IPI_RECOMMENDED			BIT(10)
 
 /* Recommend using the newer ExProcessorMasks interface */
-#define HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED	(1 << 11)
+#define HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED		BIT(11)
 
 /* Recommend using enlightened VMCS */
-#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED    (1 << 14)
+#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED		BIT(14)
 
-/*
- * Crash notification flags.
- */
-#define HV_CRASH_CTL_CRASH_NOTIFY_MSG	BIT_ULL(62)
-#define HV_CRASH_CTL_CRASH_NOTIFY	BIT_ULL(63)
+/* Nested features. These are HYPERV_CPUID_NESTED_FEATURES.EAX bits. */
+#define HV_X64_NESTED_GUEST_MAPPING_FLUSH		BIT(18)
+#define HV_X64_NESTED_MSR_BITMAP			BIT(19)
+
+/* Hyper-V specific model specific registers (MSRs) */
 
 /* MSR used to identify the guest OS. */
 #define HV_X64_MSR_GUEST_OS_ID			0x40000000
@@ -201,6 +194,9 @@
 /* MSR used to read the per-partition time reference counter */
 #define HV_X64_MSR_TIME_REF_COUNT		0x40000020
 
+/* A partition's reference time stamp counter (TSC) page */
+#define HV_X64_MSR_REFERENCE_TSC		0x40000021
+
 /* MSR used to retrieve the TSC frequency */
 #define HV_X64_MSR_TSC_FREQUENCY		0x40000022
 
@@ -258,9 +254,11 @@
 #define HV_X64_MSR_CRASH_P3			0x40000103
 #define HV_X64_MSR_CRASH_P4			0x40000104
 #define HV_X64_MSR_CRASH_CTL			0x40000105
-#define HV_X64_MSR_CRASH_CTL_NOTIFY		(1ULL << 63)
-#define HV_X64_MSR_CRASH_PARAMS		\
-		(1 + (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0))
+
+/* TSC emulation after migration */
+#define HV_X64_MSR_REENLIGHTENMENT_CONTROL	0x40000106
+#define HV_X64_MSR_TSC_EMULATION_CONTROL	0x40000107
+#define HV_X64_MSR_TSC_EMULATION_STATUS		0x40000108
 
 /*
  * Declare the MSR used to setup pages used to communicate with the hypervisor.
@@ -271,7 +269,7 @@ union hv_x64_msr_hypercall_contents {
 		u64 enable:1;
 		u64 reserved:11;
 		u64 guest_physical_address:52;
-	};
+	} __packed;
 };
 
 /*
@@ -283,7 +281,7 @@ struct ms_hyperv_tsc_page {
 	volatile u64 tsc_scale;
 	volatile s64 tsc_offset;
 	u64 reserved2[509];
-};
+}  __packed;
 
 /*
  * The guest OS needs to register the guest ID with the hypervisor.
@@ -311,39 +309,37 @@ struct ms_hyperv_tsc_page {
 
 #define HV_LINUX_VENDOR_ID              0x8100
 
-/* TSC emulation after migration */
-#define HV_X64_MSR_REENLIGHTENMENT_CONTROL	0x40000106
-
-/* Nested features (CPUID 0x4000000A) EAX */
-#define HV_X64_NESTED_GUEST_MAPPING_FLUSH	BIT(18)
-#define HV_X64_NESTED_MSR_BITMAP		BIT(19)
-
 struct hv_reenlightenment_control {
 	__u64 vector:8;
 	__u64 reserved1:8;
 	__u64 enabled:1;
 	__u64 reserved2:15;
 	__u64 target_vp:32;
-};
-
-#define HV_X64_MSR_TSC_EMULATION_CONTROL	0x40000107
-#define HV_X64_MSR_TSC_EMULATION_STATUS		0x40000108
+}  __packed;
 
 struct hv_tsc_emulation_control {
 	__u64 enabled:1;
 	__u64 reserved:63;
-};
+} __packed;
 
 struct hv_tsc_emulation_status {
 	__u64 inprogress:1;
 	__u64 reserved:63;
-};
+} __packed;
 
 #define HV_X64_MSR_HYPERCALL_ENABLE		0x00000001
 #define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT	12
 #define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_MASK	\
 		(~((1ull << HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT) - 1))
 
+/*
+ * Crash notification (HV_X64_MSR_CRASH_CTL) flags.
+ */
+#define HV_CRASH_CTL_CRASH_NOTIFY_MSG		BIT_ULL(62)
+#define HV_CRASH_CTL_CRASH_NOTIFY		BIT_ULL(63)
+#define HV_X64_MSR_CRASH_PARAMS		\
+		(1 + (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0))
+
 #define HV_IPI_LOW_VECTOR	0x10
 #define HV_IPI_HIGH_VECTOR	0xff
 
@@ -358,6 +354,7 @@ struct hv_tsc_emulation_status {
 #define HVCALL_POST_MESSAGE			0x005c
 #define HVCALL_SIGNAL_EVENT			0x005d
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
+#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
 
 #define HV_X64_MSR_VP_ASSIST_PAGE_ENABLE	0x00000001
 #define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT	12
@@ -409,7 +406,7 @@ typedef struct _HV_REFERENCE_TSC_PAGE {
 	__u32 res1;
 	__u64 tsc_scale;
 	__s64 tsc_offset;
-} HV_REFERENCE_TSC_PAGE, *PHV_REFERENCE_TSC_PAGE;
+}  __packed HV_REFERENCE_TSC_PAGE, *PHV_REFERENCE_TSC_PAGE;
 
 /* Define the number of synthetic interrupt sources. */
 #define HV_SYNIC_SINT_COUNT		(16)
@@ -466,7 +463,7 @@ union hv_message_flags {
 	struct {
 		__u8 msg_pending:1;
 		__u8 reserved:7;
-	};
+	} __packed;
 };
 
 /* Define port identifier type. */
@@ -475,7 +472,7 @@ union hv_port_id {
 	struct {
 		__u32 id:24;
 		__u32 reserved:8;
-	} u;
+	} __packed u;
 };
 
 /* Define synthetic interrupt controller message header. */
@@ -488,7 +485,7 @@ struct hv_message_header {
 		__u64 sender;
 		union hv_port_id port;
 	};
-};
+} __packed;
 
 /* Define synthetic interrupt controller message format. */
 struct hv_message {
@@ -496,12 +493,12 @@ struct hv_message {
 	union {
 		__u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
 	} u;
-};
+} __packed;
 
 /* Define the synthetic interrupt message page layout. */
 struct hv_message_page {
 	struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
-};
+} __packed;
 
 /* Define timer message payload structure. */
 struct hv_timer_message_payload {
@@ -509,7 +506,7 @@ struct hv_timer_message_payload {
 	__u32 reserved;
 	__u64 expiration_time;	/* When the timer expired */
 	__u64 delivery_time;	/* When the message was delivered */
-};
+} __packed;
 
 /* Define virtual processor assist page structure. */
 struct hv_vp_assist_page {
@@ -518,8 +515,9 @@ struct hv_vp_assist_page {
 	__u64 vtl_control[2];
 	__u64 nested_enlightenments_control[2];
 	__u32 enlighten_vmentry;
+	__u32 padding;
 	__u64 current_nested_vmcs;
-};
+} __packed;
 
 struct hv_enlightened_vmcs {
 	u32 revision_id;
@@ -533,6 +531,8 @@ struct hv_enlightened_vmcs {
 	u16 host_gs_selector;
 	u16 host_tr_selector;
 
+	u16 padding16_1;
+
 	u64 host_ia32_pat;
 	u64 host_ia32_efer;
 
@@ -651,7 +651,7 @@ struct hv_enlightened_vmcs {
 	u64 ept_pointer;
 
 	u16 virtual_processor_id;
-	u16 padding16[3];
+	u16 padding16_2[3];
 
 	u64 padding64_2[5];
 	u64 guest_physical_address;
@@ -693,7 +693,7 @@ struct hv_enlightened_vmcs {
 		u32 nested_flush_hypercall:1;
 		u32 msr_bitmap:1;
 		u32 reserved:30;
-	} hv_enlightenments_control;
+	}  __packed hv_enlightenments_control;
 	u32 hv_vp_id;
 
 	u64 hv_vm_id;
@@ -703,7 +703,7 @@ struct hv_enlightened_vmcs {
 	u64 padding64_5[7];
 	u64 xss_exit_bitmap;
 	u64 padding64_6[7];
-};
+} __packed;
 
 #define HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE			0
 #define HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP		BIT(0)
@@ -725,36 +725,129 @@ struct hv_enlightened_vmcs {
 
 #define HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL			0xFFFF
 
-#define HV_STIMER_ENABLE		(1ULL << 0)
-#define HV_STIMER_PERIODIC		(1ULL << 1)
-#define HV_STIMER_LAZY			(1ULL << 2)
-#define HV_STIMER_AUTOENABLE		(1ULL << 3)
-#define HV_STIMER_SINT(config)		(__u8)(((config) >> 16) & 0x0F)
+/* Define synthetic interrupt controller flag constants. */
+#define HV_EVENT_FLAGS_COUNT		(256 * 8)
+#define HV_EVENT_FLAGS_LONG_COUNT	(256 / sizeof(unsigned long))
+
+/*
+ * Synthetic timer configuration.
+ */
+union hv_stimer_config {
+	u64 as_uint64;
+	struct {
+		u64 enable:1;
+		u64 periodic:1;
+		u64 lazy:1;
+		u64 auto_enable:1;
+		u64 apic_vector:8;
+		u64 direct_mode:1;
+		u64 reserved_z0:3;
+		u64 sintx:4;
+		u64 reserved_z1:44;
+	} __packed;
+};
+
+
+/* Define the synthetic interrupt controller event flags format. */
+union hv_synic_event_flags {
+	unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
+};
+
+/* Define SynIC control register. */
+union hv_synic_scontrol {
+	u64 as_uint64;
+	struct {
+		u64 enable:1;
+		u64 reserved:63;
+	} __packed;
+};
+
+/* Define synthetic interrupt source. */
+union hv_synic_sint {
+	u64 as_uint64;
+	struct {
+		u64 vector:8;
+		u64 reserved1:8;
+		u64 masked:1;
+		u64 auto_eoi:1;
+		u64 reserved2:46;
+	} __packed;
+};
+
+/* Define the format of the SIMP register */
+union hv_synic_simp {
+	u64 as_uint64;
+	struct {
+		u64 simp_enabled:1;
+		u64 preserved:11;
+		u64 base_simp_gpa:52;
+	} __packed;
+};
+
+/* Define the format of the SIEFP register */
+union hv_synic_siefp {
+	u64 as_uint64;
+	struct {
+		u64 siefp_enabled:1;
+		u64 preserved:11;
+		u64 base_siefp_gpa:52;
+	} __packed;
+};
 
 struct hv_vpset {
 	u64 format;
 	u64 valid_bank_mask;
 	u64 bank_contents[];
-};
+} __packed;
 
 /* HvCallSendSyntheticClusterIpi hypercall */
 struct hv_send_ipi {
 	u32 vector;
 	u32 reserved;
 	u64 cpu_mask;
-};
+} __packed;
 
 /* HvCallSendSyntheticClusterIpiEx hypercall */
 struct hv_send_ipi_ex {
 	u32 vector;
 	u32 reserved;
 	struct hv_vpset vp_set;
-};
+} __packed;
 
 /* HvFlushGuestPhysicalAddressSpace hypercalls */
 struct hv_guest_mapping_flush {
 	u64 address_space;
 	u64 flags;
+} __packed;
+
+/*
+ *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
+ *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
+ */
+#define HV_MAX_FLUSH_PAGES (2048)
+
+/* HvFlushGuestPhysicalAddressList hypercall */
+union hv_gpa_page_range {
+	u64 address_space;
+	struct {
+		u64 additional_pages:11;
+		u64 largepage:1;
+		u64 basepfn:52;
+	} page;
+};
+
+/*
+ * All input flush parameters should be in single page. The max flush
+ * count is equal with how many entries of union hv_gpa_page_range can
+ * be populated into the input parameter page.
+ */
+#define HV_MAX_FLUSH_REP_COUNT (PAGE_SIZE - 2 * sizeof(u64) /	\
+				sizeof(union hv_gpa_page_range))
+
+struct hv_guest_mapping_flush_list {
+	u64 address_space;
+	u64 flags;
+	union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
 };
 
 /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
@@ -763,7 +856,7 @@ struct hv_tlb_flush {
 	u64 flags;
 	u64 processor_mask;
 	u64 gva_list[];
-};
+} __packed;
 
 /* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
 struct hv_tlb_flush_ex {
@@ -771,6 +864,6 @@ struct hv_tlb_flush_ex {
 	u64 flags;
 	struct hv_vpset hv_vp_set;
 	u64 gva_list[];
-};
+} __packed;
 
 #endif
diff --git a/arch/x86/include/asm/intel_pt.h b/arch/x86/include/asm/intel_pt.h
index b523f51c5400..634f99b1dc22 100644
--- a/arch/x86/include/asm/intel_pt.h
+++ b/arch/x86/include/asm/intel_pt.h
@@ -2,10 +2,36 @@
 #ifndef _ASM_X86_INTEL_PT_H
 #define _ASM_X86_INTEL_PT_H
 
+#define PT_CPUID_LEAVES		2
+#define PT_CPUID_REGS_NUM	4 /* number of regsters (eax, ebx, ecx, edx) */
+
+enum pt_capabilities {
+	PT_CAP_max_subleaf = 0,
+	PT_CAP_cr3_filtering,
+	PT_CAP_psb_cyc,
+	PT_CAP_ip_filtering,
+	PT_CAP_mtc,
+	PT_CAP_ptwrite,
+	PT_CAP_power_event_trace,
+	PT_CAP_topa_output,
+	PT_CAP_topa_multiple_entries,
+	PT_CAP_single_range_output,
+	PT_CAP_output_subsys,
+	PT_CAP_payloads_lip,
+	PT_CAP_num_address_ranges,
+	PT_CAP_mtc_periods,
+	PT_CAP_cycle_thresholds,
+	PT_CAP_psb_periods,
+};
+
 #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL)
 void cpu_emergency_stop_pt(void);
+extern u32 intel_pt_validate_hw_cap(enum pt_capabilities cap);
+extern u32 intel_pt_validate_cap(u32 *caps, enum pt_capabilities cap);
 #else
 static inline void cpu_emergency_stop_pt(void) {}
+static inline u32 intel_pt_validate_hw_cap(enum pt_capabilities cap) { return 0; }
+static inline u32 intel_pt_validate_cap(u32 *caps, enum pt_capabilities capability) { return 0; }
 #endif
 
 #endif /* _ASM_X86_INTEL_PT_H */
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index fbda5a917c5b..4660ce90de7f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -439,6 +439,11 @@ struct kvm_mmu {
 	u64 pdptrs[4]; /* pae */
 };
 
+struct kvm_tlb_range {
+	u64 start_gfn;
+	u64 pages;
+};
+
 enum pmc_type {
 	KVM_PMC_GP = 0,
 	KVM_PMC_FIXED,
@@ -497,7 +502,7 @@ struct kvm_mtrr {
 struct kvm_vcpu_hv_stimer {
 	struct hrtimer timer;
 	int index;
-	u64 config;
+	union hv_stimer_config config;
 	u64 count;
 	u64 exp_time;
 	struct hv_message msg;
@@ -601,17 +606,16 @@ struct kvm_vcpu_arch {
 
 	/*
 	 * QEMU userspace and the guest each have their own FPU state.
-	 * In vcpu_run, we switch between the user and guest FPU contexts.
-	 * While running a VCPU, the VCPU thread will have the guest FPU
-	 * context.
+	 * In vcpu_run, we switch between the user, maintained in the
+	 * task_struct struct, and guest FPU contexts. While running a VCPU,
+	 * the VCPU thread will have the guest FPU context.
 	 *
 	 * Note that while the PKRU state lives inside the fpu registers,
 	 * it is switched out separately at VMENTER and VMEXIT time. The
 	 * "guest_fpu" state here contains the guest FPU context, with the
 	 * host PRKU bits.
 	 */
-	struct fpu user_fpu;
-	struct fpu guest_fpu;
+	struct fpu *guest_fpu;
 
 	u64 xcr0;
 	u64 guest_supported_xcr0;
@@ -1042,6 +1046,8 @@ struct kvm_x86_ops {
 
 	void (*tlb_flush)(struct kvm_vcpu *vcpu, bool invalidate_gpa);
 	int  (*tlb_remote_flush)(struct kvm *kvm);
+	int  (*tlb_remote_flush_with_range)(struct kvm *kvm,
+			struct kvm_tlb_range *range);
 
 	/*
 	 * Flush any TLB entries associated with the given GVA.
@@ -1106,6 +1112,7 @@ struct kvm_x86_ops {
 	bool (*mpx_supported)(void);
 	bool (*xsaves_supported)(void);
 	bool (*umip_emulated)(void);
+	bool (*pt_supported)(void);
 
 	int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
 	void (*request_immediate_exit)(struct kvm_vcpu *vcpu);
@@ -1186,6 +1193,7 @@ struct kvm_x86_ops {
 
 	int (*nested_enable_evmcs)(struct kvm_vcpu *vcpu,
 				   uint16_t *vmcs_version);
+	uint16_t (*nested_get_evmcs_version)(struct kvm_vcpu *vcpu);
 };
 
 struct kvm_arch_async_pf {
@@ -1196,6 +1204,7 @@ struct kvm_arch_async_pf {
 };
 
 extern struct kvm_x86_ops *kvm_x86_ops;
+extern struct kmem_cache *x86_fpu_cache;
 
 #define __KVM_HAVE_ARCH_VM_ALLOC
 static inline struct kvm *kvm_arch_alloc_vm(void)
@@ -1492,7 +1501,7 @@ asmlinkage void kvm_spurious_fault(void);
 	"cmpb $0, kvm_rebooting \n\t"	      \
 	"jne 668b \n\t"      		      \
 	__ASM_SIZE(push) " $666b \n\t"	      \
-	"call kvm_spurious_fault \n\t"	      \
+	"jmp kvm_spurious_fault \n\t"	      \
 	".popsection \n\t" \
 	_ASM_EXTABLE(666b, 667b)
 
@@ -1503,7 +1512,7 @@ asmlinkage void kvm_spurious_fault(void);
 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
-void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
+int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 1d0a7778e163..cc60e617931c 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -22,6 +22,11 @@ struct ms_hyperv_info {
 
 extern struct ms_hyperv_info ms_hyperv;
 
+
+typedef int (*hyperv_fill_flush_list_func)(
+		struct hv_guest_mapping_flush_list *flush,
+		void *data);
+
 /*
  * Generate the guest ID.
  */
@@ -348,6 +353,11 @@ void set_hv_tscchange_cb(void (*cb)(void));
 void clear_hv_tscchange_cb(void);
 void hyperv_stop_tsc_emulation(void);
 int hyperv_flush_guest_mapping(u64 as);
+int hyperv_flush_guest_mapping_range(u64 as,
+		hyperv_fill_flush_list_func fill_func, void *data);
+int hyperv_fill_flush_guest_mapping_list(
+		struct hv_guest_mapping_flush_list *flush,
+		u64 start_gfn, u64 end_gfn);
 
 #ifdef CONFIG_X86_64
 void hv_apic_init(void);
@@ -370,6 +380,11 @@ static inline struct hv_vp_assist_page *hv_get_vp_assist_page(unsigned int cpu)
 	return NULL;
 }
 static inline int hyperv_flush_guest_mapping(u64 as) { return -1; }
+static inline int hyperv_flush_guest_mapping_range(u64 as,
+		hyperv_fill_flush_list_func fill_func, void *data)
+{
+	return -1;
+}
 #endif /* CONFIG_HYPERV */
 
 #ifdef CONFIG_HYPERV_TSCPAGE
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 9e39cc8bd989..8e40c2446fd1 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -121,7 +121,43 @@
 #define MSR_PEBS_LD_LAT_THRESHOLD	0x000003f6
 
 #define MSR_IA32_RTIT_CTL		0x00000570
+#define RTIT_CTL_TRACEEN		BIT(0)
+#define RTIT_CTL_CYCLEACC		BIT(1)
+#define RTIT_CTL_OS			BIT(2)
+#define RTIT_CTL_USR			BIT(3)
+#define RTIT_CTL_PWR_EVT_EN		BIT(4)
+#define RTIT_CTL_FUP_ON_PTW		BIT(5)
+#define RTIT_CTL_FABRIC_EN		BIT(6)
+#define RTIT_CTL_CR3EN			BIT(7)
+#define RTIT_CTL_TOPA			BIT(8)
+#define RTIT_CTL_MTC_EN			BIT(9)
+#define RTIT_CTL_TSC_EN			BIT(10)
+#define RTIT_CTL_DISRETC		BIT(11)
+#define RTIT_CTL_PTW_EN			BIT(12)
+#define RTIT_CTL_BRANCH_EN		BIT(13)
+#define RTIT_CTL_MTC_RANGE_OFFSET	14
+#define RTIT_CTL_MTC_RANGE		(0x0full << RTIT_CTL_MTC_RANGE_OFFSET)
+#define RTIT_CTL_CYC_THRESH_OFFSET	19
+#define RTIT_CTL_CYC_THRESH		(0x0full << RTIT_CTL_CYC_THRESH_OFFSET)
+#define RTIT_CTL_PSB_FREQ_OFFSET	24
+#define RTIT_CTL_PSB_FREQ		(0x0full << RTIT_CTL_PSB_FREQ_OFFSET)
+#define RTIT_CTL_ADDR0_OFFSET		32
+#define RTIT_CTL_ADDR0			(0x0full << RTIT_CTL_ADDR0_OFFSET)
+#define RTIT_CTL_ADDR1_OFFSET		36
+#define RTIT_CTL_ADDR1			(0x0full << RTIT_CTL_ADDR1_OFFSET)
+#define RTIT_CTL_ADDR2_OFFSET		40
+#define RTIT_CTL_ADDR2			(0x0full << RTIT_CTL_ADDR2_OFFSET)
+#define RTIT_CTL_ADDR3_OFFSET		44
+#define RTIT_CTL_ADDR3			(0x0full << RTIT_CTL_ADDR3_OFFSET)
 #define MSR_IA32_RTIT_STATUS		0x00000571
+#define RTIT_STATUS_FILTEREN		BIT(0)
+#define RTIT_STATUS_CONTEXTEN		BIT(1)
+#define RTIT_STATUS_TRIGGEREN		BIT(2)
+#define RTIT_STATUS_BUFFOVF		BIT(3)
+#define RTIT_STATUS_ERROR		BIT(4)
+#define RTIT_STATUS_STOPPED		BIT(5)
+#define RTIT_STATUS_BYTECNT_OFFSET	32
+#define RTIT_STATUS_BYTECNT		(0x1ffffull << RTIT_STATUS_BYTECNT_OFFSET)
 #define MSR_IA32_RTIT_ADDR0_A		0x00000580
 #define MSR_IA32_RTIT_ADDR0_B		0x00000581
 #define MSR_IA32_RTIT_ADDR1_A		0x00000582
@@ -772,6 +808,7 @@
 #define VMX_BASIC_INOUT		0x0040000000000000LLU
 
 /* MSR_IA32_VMX_MISC bits */
+#define MSR_IA32_VMX_MISC_INTEL_PT                 (1ULL << 14)
 #define MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS (1ULL << 29)
 #define MSR_IA32_VMX_MISC_PREEMPTION_TIMER_SCALE   0x1F
 /* AMD-V MSRs */
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index 93b462e48067..dec9c1e84c78 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -290,11 +290,4 @@ struct __attribute__ ((__packed__)) vmcb {
 
 #define SVM_CR0_SELECTIVE_MASK (X86_CR0_TS | X86_CR0_MP)
 
-#define SVM_VMLOAD ".byte 0x0f, 0x01, 0xda"
-#define SVM_VMRUN  ".byte 0x0f, 0x01, 0xd8"
-#define SVM_VMSAVE ".byte 0x0f, 0x01, 0xdb"
-#define SVM_CLGI   ".byte 0x0f, 0x01, 0xdd"
-#define SVM_STGI   ".byte 0x0f, 0x01, 0xdc"
-#define SVM_INVLPGA ".byte 0x0f, 0x01, 0xdf"
-
 #endif
diff --git a/arch/x86/include/asm/trace/hyperv.h b/arch/x86/include/asm/trace/hyperv.h
index 2e6245a023ef..ace464f09681 100644
--- a/arch/x86/include/asm/trace/hyperv.h
+++ b/arch/x86/include/asm/trace/hyperv.h
@@ -42,6 +42,20 @@ TRACE_EVENT(hyperv_nested_flush_guest_mapping,
 	    TP_printk("address space %llx ret %d", __entry->as, __entry->ret)
 	);
 
+TRACE_EVENT(hyperv_nested_flush_guest_mapping_range,
+	    TP_PROTO(u64 as, int ret),
+	    TP_ARGS(as, ret),
+
+	    TP_STRUCT__entry(
+		    __field(u64, as)
+		    __field(int, ret)
+		    ),
+	    TP_fast_assign(__entry->as = as;
+			   __entry->ret = ret;
+		    ),
+	    TP_printk("address space %llx ret %d", __entry->as, __entry->ret)
+	);
+
 TRACE_EVENT(hyperv_send_ipi_mask,
 	    TP_PROTO(const struct cpumask *cpus,
 		     int vector),
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index ade0f153947d..4e4133e86484 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -77,7 +77,10 @@
 #define SECONDARY_EXEC_ENCLS_EXITING		0x00008000
 #define SECONDARY_EXEC_RDSEED_EXITING		0x00010000
 #define SECONDARY_EXEC_ENABLE_PML               0x00020000
+#define SECONDARY_EXEC_PT_CONCEAL_VMX		0x00080000
 #define SECONDARY_EXEC_XSAVES			0x00100000
+#define SECONDARY_EXEC_PT_USE_GPA		0x01000000
+#define SECONDARY_EXEC_MODE_BASED_EPT_EXEC	0x00400000
 #define SECONDARY_EXEC_TSC_SCALING              0x02000000
 
 #define PIN_BASED_EXT_INTR_MASK                 0x00000001
@@ -98,6 +101,8 @@
 #define VM_EXIT_LOAD_IA32_EFER                  0x00200000
 #define VM_EXIT_SAVE_VMX_PREEMPTION_TIMER       0x00400000
 #define VM_EXIT_CLEAR_BNDCFGS                   0x00800000
+#define VM_EXIT_PT_CONCEAL_PIP			0x01000000
+#define VM_EXIT_CLEAR_IA32_RTIT_CTL		0x02000000
 
 #define VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR	0x00036dff
 
@@ -109,6 +114,8 @@
 #define VM_ENTRY_LOAD_IA32_PAT			0x00004000
 #define VM_ENTRY_LOAD_IA32_EFER                 0x00008000
 #define VM_ENTRY_LOAD_BNDCFGS                   0x00010000
+#define VM_ENTRY_PT_CONCEAL_PIP			0x00020000
+#define VM_ENTRY_LOAD_IA32_RTIT_CTL		0x00040000
 
 #define VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR	0x000011ff
 
@@ -240,6 +247,8 @@ enum vmcs_field {
 	GUEST_PDPTR3_HIGH               = 0x00002811,
 	GUEST_BNDCFGS                   = 0x00002812,
 	GUEST_BNDCFGS_HIGH              = 0x00002813,
+	GUEST_IA32_RTIT_CTL		= 0x00002814,
+	GUEST_IA32_RTIT_CTL_HIGH	= 0x00002815,
 	HOST_IA32_PAT			= 0x00002c00,
 	HOST_IA32_PAT_HIGH		= 0x00002c01,
 	HOST_IA32_EFER			= 0x00002c02,
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 30084ecaa20f..e811d4d1c824 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -1,19 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*  KVM paravirtual clock driver. A clocksource implementation
     Copyright (C) 2008 Glauber de Oliveira Costa, Red Hat Inc.
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
 #include <linux/clocksource.h>
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index dc4f2fdf5e57..69b3a7c30013 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -16,7 +16,7 @@ kvm-y			+= x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
 			   i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \
 			   hyperv.o page_track.o debugfs.o
 
-kvm-intel-y		+= vmx.o pmu_intel.o
+kvm-intel-y		+= vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o vmx/evmcs.o vmx/nested.o
 kvm-amd-y		+= svm.o pmu_amd.o
 
 obj-$(CONFIG_KVM)	+= kvm.o
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 7bcfa61375c0..bbffa6c54697 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -67,9 +67,6 @@ u64 kvm_supported_xcr0(void)
 
 #define F(x) bit(X86_FEATURE_##x)
 
-/* For scattered features from cpufeatures.h; we currently expose none */
-#define KF(x) bit(KVM_CPUID_BIT_##x)
-
 int kvm_update_cpuid(struct kvm_vcpu *vcpu)
 {
 	struct kvm_cpuid_entry2 *best;
@@ -337,6 +334,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 	unsigned f_mpx = kvm_mpx_supported() ? F(MPX) : 0;
 	unsigned f_xsaves = kvm_x86_ops->xsaves_supported() ? F(XSAVES) : 0;
 	unsigned f_umip = kvm_x86_ops->umip_emulated() ? F(UMIP) : 0;
+	unsigned f_intel_pt = kvm_x86_ops->pt_supported() ? F(INTEL_PT) : 0;
 
 	/* cpuid 1.edx */
 	const u32 kvm_cpuid_1_edx_x86_features =
@@ -380,8 +378,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 
 	/* cpuid 0x80000008.ebx */
 	const u32 kvm_cpuid_8000_0008_ebx_x86_features =
-		F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) |
-		F(AMD_SSB_NO);
+		F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) |
+		F(AMD_SSB_NO) | F(AMD_STIBP);
 
 	/* cpuid 0xC0000001.edx */
 	const u32 kvm_cpuid_C000_0001_edx_x86_features =
@@ -395,7 +393,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 		F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
 		F(ADX) | F(SMAP) | F(AVX512IFMA) | F(AVX512F) | F(AVX512PF) |
 		F(AVX512ER) | F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(AVX512DQ) |
-		F(SHA_NI) | F(AVX512BW) | F(AVX512VL);
+		F(SHA_NI) | F(AVX512BW) | F(AVX512VL) | f_intel_pt;
 
 	/* cpuid 0xD.1.eax */
 	const u32 kvm_cpuid_D_1_eax_x86_features =
@@ -411,7 +409,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 	/* cpuid 7.0.edx*/
 	const u32 kvm_cpuid_7_0_edx_x86_features =
 		F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
-		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES);
+		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES) | F(INTEL_STIBP);
 
 	/* all calls to cpuid_count() should be made on the same cpu */
 	get_cpu();
@@ -426,7 +424,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 
 	switch (function) {
 	case 0:
-		entry->eax = min(entry->eax, (u32)0xd);
+		entry->eax = min(entry->eax, (u32)(f_intel_pt ? 0x14 : 0xd));
 		break;
 	case 1:
 		entry->edx &= kvm_cpuid_1_edx_x86_features;
@@ -603,6 +601,23 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 		}
 		break;
 	}
+	/* Intel PT */
+	case 0x14: {
+		int t, times = entry->eax;
+
+		if (!f_intel_pt)
+			break;
+
+		entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
+		for (t = 1; t <= times; ++t) {
+			if (*nent >= maxnent)
+				goto out;
+			do_cpuid_1_ent(&entry[t], function, t);
+			entry[t].flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
+			++*nent;
+		}
+		break;
+	}
 	case KVM_CPUID_SIGNATURE: {
 		static const char signature[12] = "KVMKVMKVM\0\0";
 		const u32 *sigptr = (const u32 *)signature;
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 4e80080f277a..c90a5352d158 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -38,6 +38,9 @@
 
 #define KVM_HV_MAX_SPARSE_VCPU_SET_BITS DIV_ROUND_UP(KVM_MAX_VCPUS, 64)
 
+static void stimer_mark_pending(struct kvm_vcpu_hv_stimer *stimer,
+				bool vcpu_kick);
+
 static inline u64 synic_read_sint(struct kvm_vcpu_hv_synic *synic, int sint)
 {
 	return atomic64_read(&synic->sint[sint]);
@@ -158,59 +161,24 @@ static struct kvm_vcpu_hv_synic *synic_get(struct kvm *kvm, u32 vpidx)
 	return (synic->active) ? synic : NULL;
 }
 
-static void synic_clear_sint_msg_pending(struct kvm_vcpu_hv_synic *synic,
-					u32 sint)
-{
-	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
-	struct page *page;
-	gpa_t gpa;
-	struct hv_message *msg;
-	struct hv_message_page *msg_page;
-
-	gpa = synic->msg_page & PAGE_MASK;
-	page = kvm_vcpu_gfn_to_page(vcpu, gpa >> PAGE_SHIFT);
-	if (is_error_page(page)) {
-		vcpu_err(vcpu, "Hyper-V SynIC can't get msg page, gpa 0x%llx\n",
-			 gpa);
-		return;
-	}
-	msg_page = kmap_atomic(page);
-
-	msg = &msg_page->sint_message[sint];
-	msg->header.message_flags.msg_pending = 0;
-
-	kunmap_atomic(msg_page);
-	kvm_release_page_dirty(page);
-	kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
-}
-
 static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint)
 {
 	struct kvm *kvm = vcpu->kvm;
 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
 	struct kvm_vcpu_hv *hv_vcpu = vcpu_to_hv_vcpu(vcpu);
 	struct kvm_vcpu_hv_stimer *stimer;
-	int gsi, idx, stimers_pending;
+	int gsi, idx;
 
 	trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint);
 
-	if (synic->msg_page & HV_SYNIC_SIMP_ENABLE)
-		synic_clear_sint_msg_pending(synic, sint);
-
 	/* Try to deliver pending Hyper-V SynIC timers messages */
-	stimers_pending = 0;
 	for (idx = 0; idx < ARRAY_SIZE(hv_vcpu->stimer); idx++) {
 		stimer = &hv_vcpu->stimer[idx];
-		if (stimer->msg_pending &&
-		    (stimer->config & HV_STIMER_ENABLE) &&
-		    HV_STIMER_SINT(stimer->config) == sint) {
-			set_bit(stimer->index,
-				hv_vcpu->stimer_pending_bitmap);
-			stimers_pending++;
-		}
+		if (stimer->msg_pending && stimer->config.enable &&
+		    !stimer->config.direct_mode &&
+		    stimer->config.sintx == sint)
+			stimer_mark_pending(stimer, false);
 	}
-	if (stimers_pending)
-		kvm_make_request(KVM_REQ_HV_STIMER, vcpu);
 
 	idx = srcu_read_lock(&kvm->irq_srcu);
 	gsi = atomic_read(&synic->sint_to_gsi[sint]);
@@ -497,7 +465,7 @@ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer)
 	time_now = get_time_ref_counter(stimer_to_vcpu(stimer)->kvm);
 	ktime_now = ktime_get();
 
-	if (stimer->config & HV_STIMER_PERIODIC) {
+	if (stimer->config.periodic) {
 		if (stimer->exp_time) {
 			if (time_now >= stimer->exp_time) {
 				u64 remainder;
@@ -546,13 +514,18 @@ static int stimer_start(struct kvm_vcpu_hv_stimer *stimer)
 static int stimer_set_config(struct kvm_vcpu_hv_stimer *stimer, u64 config,
 			     bool host)
 {
+	union hv_stimer_config new_config = {.as_uint64 = config},
+		old_config = {.as_uint64 = stimer->config.as_uint64};
+
 	trace_kvm_hv_stimer_set_config(stimer_to_vcpu(stimer)->vcpu_id,
 				       stimer->index, config, host);
 
 	stimer_cleanup(stimer);
-	if ((stimer->config & HV_STIMER_ENABLE) && HV_STIMER_SINT(config) == 0)
-		config &= ~HV_STIMER_ENABLE;
-	stimer->config = config;
+	if (old_config.enable &&
+	    !new_config.direct_mode && new_config.sintx == 0)
+		new_config.enable = 0;
+	stimer->config.as_uint64 = new_config.as_uint64;
+
 	stimer_mark_pending(stimer, false);
 	return 0;
 }
@@ -566,16 +539,16 @@ static int stimer_set_count(struct kvm_vcpu_hv_stimer *stimer, u64 count,
 	stimer_cleanup(stimer);
 	stimer->count = count;
 	if (stimer->count == 0)
-		stimer->config &= ~HV_STIMER_ENABLE;
-	else if (stimer->config & HV_STIMER_AUTOENABLE)
-		stimer->config |= HV_STIMER_ENABLE;
+		stimer->config.enable = 0;
+	else if (stimer->config.auto_enable)
+		stimer->config.enable = 1;
 	stimer_mark_pending(stimer, false);
 	return 0;
 }
 
 static int stimer_get_config(struct kvm_vcpu_hv_stimer *stimer, u64 *pconfig)
 {
-	*pconfig = stimer->config;
+	*pconfig = stimer->config.as_uint64;
 	return 0;
 }
 
@@ -586,44 +559,60 @@ static int stimer_get_count(struct kvm_vcpu_hv_stimer *stimer, u64 *pcount)
 }
 
 static int synic_deliver_msg(struct kvm_vcpu_hv_synic *synic, u32 sint,
-			     struct hv_message *src_msg)
+			     struct hv_message *src_msg, bool no_retry)
 {
 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
-	struct page *page;
-	gpa_t gpa;
-	struct hv_message *dst_msg;
+	int msg_off = offsetof(struct hv_message_page, sint_message[sint]);
+	gfn_t msg_page_gfn;
+	struct hv_message_header hv_hdr;
 	int r;
-	struct hv_message_page *msg_page;
 
 	if (!(synic->msg_page & HV_SYNIC_SIMP_ENABLE))
 		return -ENOENT;
 
-	gpa = synic->msg_page & PAGE_MASK;
-	page = kvm_vcpu_gfn_to_page(vcpu, gpa >> PAGE_SHIFT);
-	if (is_error_page(page))
-		return -EFAULT;
+	msg_page_gfn = synic->msg_page >> PAGE_SHIFT;
 
-	msg_page = kmap_atomic(page);
-	dst_msg = &msg_page->sint_message[sint];
-	if (sync_cmpxchg(&dst_msg->header.message_type, HVMSG_NONE,
-			 src_msg->header.message_type) != HVMSG_NONE) {
-		dst_msg->header.message_flags.msg_pending = 1;
-		r = -EAGAIN;
-	} else {
-		memcpy(&dst_msg->u.payload, &src_msg->u.payload,
-		       src_msg->header.payload_size);
-		dst_msg->header.message_type = src_msg->header.message_type;
-		dst_msg->header.payload_size = src_msg->header.payload_size;
-		r = synic_set_irq(synic, sint);
-		if (r >= 1)
-			r = 0;
-		else if (r == 0)
-			r = -EFAULT;
+	/*
+	 * Strictly following the spec-mandated ordering would assume setting
+	 * .msg_pending before checking .message_type.  However, this function
+	 * is only called in vcpu context so the entire update is atomic from
+	 * guest POV and thus the exact order here doesn't matter.
+	 */
+	r = kvm_vcpu_read_guest_page(vcpu, msg_page_gfn, &hv_hdr.message_type,
+				     msg_off + offsetof(struct hv_message,
+							header.message_type),
+				     sizeof(hv_hdr.message_type));
+	if (r < 0)
+		return r;
+
+	if (hv_hdr.message_type != HVMSG_NONE) {
+		if (no_retry)
+			return 0;
+
+		hv_hdr.message_flags.msg_pending = 1;
+		r = kvm_vcpu_write_guest_page(vcpu, msg_page_gfn,
+					      &hv_hdr.message_flags,
+					      msg_off +
+					      offsetof(struct hv_message,
+						       header.message_flags),
+					      sizeof(hv_hdr.message_flags));
+		if (r < 0)
+			return r;
+		return -EAGAIN;
 	}
-	kunmap_atomic(msg_page);
-	kvm_release_page_dirty(page);
-	kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
-	return r;
+
+	r = kvm_vcpu_write_guest_page(vcpu, msg_page_gfn, src_msg, msg_off,
+				      sizeof(src_msg->header) +
+				      src_msg->header.payload_size);
+	if (r < 0)
+		return r;
+
+	r = synic_set_irq(synic, sint);
+	if (r < 0)
+		return r;
+	if (r == 0)
+		return -EFAULT;
+	return 0;
 }
 
 static int stimer_send_msg(struct kvm_vcpu_hv_stimer *stimer)
@@ -633,24 +622,45 @@ static int stimer_send_msg(struct kvm_vcpu_hv_stimer *stimer)
 	struct hv_timer_message_payload *payload =
 			(struct hv_timer_message_payload *)&msg->u.payload;
 
+	/*
+	 * To avoid piling up periodic ticks, don't retry message
+	 * delivery for them (within "lazy" lost ticks policy).
+	 */
+	bool no_retry = stimer->config.periodic;
+
 	payload->expiration_time = stimer->exp_time;
 	payload->delivery_time = get_time_ref_counter(vcpu->kvm);
 	return synic_deliver_msg(vcpu_to_synic(vcpu),
-				 HV_STIMER_SINT(stimer->config), msg);
+				 stimer->config.sintx, msg,
+				 no_retry);
+}
+
+static int stimer_notify_direct(struct kvm_vcpu_hv_stimer *stimer)
+{
+	struct kvm_vcpu *vcpu = stimer_to_vcpu(stimer);
+	struct kvm_lapic_irq irq = {
+		.delivery_mode = APIC_DM_FIXED,
+		.vector = stimer->config.apic_vector
+	};
+
+	return !kvm_apic_set_irq(vcpu, &irq, NULL);
 }
 
 static void stimer_expiration(struct kvm_vcpu_hv_stimer *stimer)
 {
-	int r;
+	int r, direct = stimer->config.direct_mode;
 
 	stimer->msg_pending = true;
-	r = stimer_send_msg(stimer);
+	if (!direct)
+		r = stimer_send_msg(stimer);
+	else
+		r = stimer_notify_direct(stimer);
 	trace_kvm_hv_stimer_expiration(stimer_to_vcpu(stimer)->vcpu_id,
-				       stimer->index, r);
+				       stimer->index, direct, r);
 	if (!r) {
 		stimer->msg_pending = false;
-		if (!(stimer->config & HV_STIMER_PERIODIC))
-			stimer->config &= ~HV_STIMER_ENABLE;
+		if (!(stimer->config.periodic))
+			stimer->config.enable = 0;
 	}
 }
 
@@ -664,7 +674,7 @@ void kvm_hv_process_stimers(struct kvm_vcpu *vcpu)
 	for (i = 0; i < ARRAY_SIZE(hv_vcpu->stimer); i++)
 		if (test_and_clear_bit(i, hv_vcpu->stimer_pending_bitmap)) {
 			stimer = &hv_vcpu->stimer[i];
-			if (stimer->config & HV_STIMER_ENABLE) {
+			if (stimer->config.enable) {
 				exp_time = stimer->exp_time;
 
 				if (exp_time) {
@@ -674,7 +684,7 @@ void kvm_hv_process_stimers(struct kvm_vcpu *vcpu)
 						stimer_expiration(stimer);
 				}
 
-				if ((stimer->config & HV_STIMER_ENABLE) &&
+				if ((stimer->config.enable) &&
 				    stimer->count) {
 					if (!stimer->msg_pending)
 						stimer_start(stimer);
@@ -815,9 +825,9 @@ static int kvm_hv_msr_set_crash_ctl(struct kvm_vcpu *vcpu, u64 data, bool host)
 	struct kvm_hv *hv = &vcpu->kvm->arch.hyperv;
 
 	if (host)
-		hv->hv_crash_ctl = data & HV_X64_MSR_CRASH_CTL_NOTIFY;
+		hv->hv_crash_ctl = data & HV_CRASH_CTL_CRASH_NOTIFY;
 
-	if (!host && (data & HV_X64_MSR_CRASH_CTL_NOTIFY)) {
+	if (!host && (data & HV_CRASH_CTL_CRASH_NOTIFY)) {
 
 		vcpu_debug(vcpu, "hv crash (0x%llx 0x%llx 0x%llx 0x%llx 0x%llx)\n",
 			  hv->hv_crash_param[0],
@@ -1758,3 +1768,124 @@ int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args)
 		return kvm_hv_eventfd_deassign(kvm, args->conn_id);
 	return kvm_hv_eventfd_assign(kvm, args->conn_id, args->fd);
 }
+
+int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
+				struct kvm_cpuid_entry2 __user *entries)
+{
+	uint16_t evmcs_ver = kvm_x86_ops->nested_get_evmcs_version(vcpu);
+	struct kvm_cpuid_entry2 cpuid_entries[] = {
+		{ .function = HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS },
+		{ .function = HYPERV_CPUID_INTERFACE },
+		{ .function = HYPERV_CPUID_VERSION },
+		{ .function = HYPERV_CPUID_FEATURES },
+		{ .function = HYPERV_CPUID_ENLIGHTMENT_INFO },
+		{ .function = HYPERV_CPUID_IMPLEMENT_LIMITS },
+		{ .function = HYPERV_CPUID_NESTED_FEATURES },
+	};
+	int i, nent = ARRAY_SIZE(cpuid_entries);
+
+	/* Skip NESTED_FEATURES if eVMCS is not supported */
+	if (!evmcs_ver)
+		--nent;
+
+	if (cpuid->nent < nent)
+		return -E2BIG;
+
+	if (cpuid->nent > nent)
+		cpuid->nent = nent;
+
+	for (i = 0; i < nent; i++) {
+		struct kvm_cpuid_entry2 *ent = &cpuid_entries[i];
+		u32 signature[3];
+
+		switch (ent->function) {
+		case HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS:
+			memcpy(signature, "Linux KVM Hv", 12);
+
+			ent->eax = HYPERV_CPUID_NESTED_FEATURES;
+			ent->ebx = signature[0];
+			ent->ecx = signature[1];
+			ent->edx = signature[2];
+			break;
+
+		case HYPERV_CPUID_INTERFACE:
+			memcpy(signature, "Hv#1\0\0\0\0\0\0\0\0", 12);
+			ent->eax = signature[0];
+			break;
+
+		case HYPERV_CPUID_VERSION:
+			/*
+			 * We implement some Hyper-V 2016 functions so let's use
+			 * this version.
+			 */
+			ent->eax = 0x00003839;
+			ent->ebx = 0x000A0000;
+			break;
+
+		case HYPERV_CPUID_FEATURES:
+			ent->eax |= HV_X64_MSR_VP_RUNTIME_AVAILABLE;
+			ent->eax |= HV_MSR_TIME_REF_COUNT_AVAILABLE;
+			ent->eax |= HV_X64_MSR_SYNIC_AVAILABLE;
+			ent->eax |= HV_MSR_SYNTIMER_AVAILABLE;
+			ent->eax |= HV_X64_MSR_APIC_ACCESS_AVAILABLE;
+			ent->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
+			ent->eax |= HV_X64_MSR_VP_INDEX_AVAILABLE;
+			ent->eax |= HV_X64_MSR_RESET_AVAILABLE;
+			ent->eax |= HV_MSR_REFERENCE_TSC_AVAILABLE;
+			ent->eax |= HV_X64_MSR_GUEST_IDLE_AVAILABLE;
+			ent->eax |= HV_X64_ACCESS_FREQUENCY_MSRS;
+			ent->eax |= HV_X64_ACCESS_REENLIGHTENMENT;
+
+			ent->ebx |= HV_X64_POST_MESSAGES;
+			ent->ebx |= HV_X64_SIGNAL_EVENTS;
+
+			ent->edx |= HV_FEATURE_FREQUENCY_MSRS_AVAILABLE;
+			ent->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE;
+			ent->edx |= HV_STIMER_DIRECT_MODE_AVAILABLE;
+
+			break;
+
+		case HYPERV_CPUID_ENLIGHTMENT_INFO:
+			ent->eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED;
+			ent->eax |= HV_X64_APIC_ACCESS_RECOMMENDED;
+			ent->eax |= HV_X64_SYSTEM_RESET_RECOMMENDED;
+			ent->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED;
+			ent->eax |= HV_X64_CLUSTER_IPI_RECOMMENDED;
+			ent->eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED;
+			ent->eax |= HV_X64_ENLIGHTENED_VMCS_RECOMMENDED;
+
+			/*
+			 * Default number of spinlock retry attempts, matches
+			 * HyperV 2016.
+			 */
+			ent->ebx = 0x00000FFF;
+
+			break;
+
+		case HYPERV_CPUID_IMPLEMENT_LIMITS:
+			/* Maximum number of virtual processors */
+			ent->eax = KVM_MAX_VCPUS;
+			/*
+			 * Maximum number of logical processors, matches
+			 * HyperV 2016.
+			 */
+			ent->ebx = 64;
+
+			break;
+
+		case HYPERV_CPUID_NESTED_FEATURES:
+			ent->eax = evmcs_ver;
+
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	if (copy_to_user(entries, cpuid_entries,
+			 nent * sizeof(struct kvm_cpuid_entry2)))
+		return -EFAULT;
+
+	return 0;
+}
diff --git a/arch/x86/kvm/hyperv.h b/arch/x86/kvm/hyperv.h
index 0e66c12ed2c3..fd7cf13a2144 100644
--- a/arch/x86/kvm/hyperv.h
+++ b/arch/x86/kvm/hyperv.h
@@ -24,6 +24,8 @@
 #ifndef __ARCH_X86_KVM_HYPERV_H__
 #define __ARCH_X86_KVM_HYPERV_H__
 
+#include <linux/kvm_host.h>
+
 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
 {
 	return &vcpu->arch.hyperv;
@@ -95,5 +97,7 @@ void kvm_hv_setup_tsc_page(struct kvm *kvm,
 void kvm_hv_init_vm(struct kvm *kvm);
 void kvm_hv_destroy_vm(struct kvm *kvm);
 int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
+int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
+				struct kvm_cpuid_entry2 __user *entries);
 
 #endif
diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h
index 9619dcc2b325..f8f56a93358b 100644
--- a/arch/x86/kvm/kvm_cache_regs.h
+++ b/arch/x86/kvm/kvm_cache_regs.h
@@ -2,6 +2,8 @@
 #ifndef ASM_KVM_CACHE_REGS_H
 #define ASM_KVM_CACHE_REGS_H
 
+#include <linux/kvm_host.h>
+
 #define KVM_POSSIBLE_CR0_GUEST_BITS X86_CR0_TS
 #define KVM_POSSIBLE_CR4_GUEST_BITS				  \
 	(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR  \
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index c4533d05c214..9f089e2e09d0 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -251,10 +251,9 @@ static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val)
 
 	if (enabled != apic->sw_enabled) {
 		apic->sw_enabled = enabled;
-		if (enabled) {
+		if (enabled)
 			static_key_slow_dec_deferred(&apic_sw_disabled);
-			recalculate_apic_map(apic->vcpu->kvm);
-		} else
+		else
 			static_key_slow_inc(&apic_sw_disabled.key);
 	}
 }
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7c03c0f35444..ce770b446238 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -264,6 +264,35 @@ static void mmu_spte_set(u64 *sptep, u64 spte);
 static union kvm_mmu_page_role
 kvm_mmu_calc_root_page_role(struct kvm_vcpu *vcpu);
 
+
+static inline bool kvm_available_flush_tlb_with_range(void)
+{
+	return kvm_x86_ops->tlb_remote_flush_with_range;
+}
+
+static void kvm_flush_remote_tlbs_with_range(struct kvm *kvm,
+		struct kvm_tlb_range *range)
+{
+	int ret = -ENOTSUPP;
+
+	if (range && kvm_x86_ops->tlb_remote_flush_with_range)
+		ret = kvm_x86_ops->tlb_remote_flush_with_range(kvm, range);
+
+	if (ret)
+		kvm_flush_remote_tlbs(kvm);
+}
+
+static void kvm_flush_remote_tlbs_with_address(struct kvm *kvm,
+		u64 start_gfn, u64 pages)
+{
+	struct kvm_tlb_range range;
+
+	range.start_gfn = start_gfn;
+	range.pages = pages;
+
+	kvm_flush_remote_tlbs_with_range(kvm, &range);
+}
+
 void kvm_mmu_set_mmio_spte_mask(u64 mmio_mask, u64 mmio_value)
 {
 	BUG_ON((mmio_mask & mmio_value) != mmio_value);
@@ -1456,8 +1485,12 @@ static bool __drop_large_spte(struct kvm *kvm, u64 *sptep)
 
 static void drop_large_spte(struct kvm_vcpu *vcpu, u64 *sptep)
 {
-	if (__drop_large_spte(vcpu->kvm, sptep))
-		kvm_flush_remote_tlbs(vcpu->kvm);
+	if (__drop_large_spte(vcpu->kvm, sptep)) {
+		struct kvm_mmu_page *sp = page_header(__pa(sptep));
+
+		kvm_flush_remote_tlbs_with_address(vcpu->kvm, sp->gfn,
+			KVM_PAGES_PER_HPAGE(sp->role.level));
+	}
 }
 
 /*
@@ -1743,10 +1776,12 @@ restart:
 		}
 	}
 
-	if (need_flush)
-		kvm_flush_remote_tlbs(kvm);
+	if (need_flush && kvm_available_flush_tlb_with_range()) {
+		kvm_flush_remote_tlbs_with_address(kvm, gfn, 1);
+		return 0;
+	}
 
-	return 0;
+	return need_flush;
 }
 
 struct slot_rmap_walk_iterator {
@@ -1880,9 +1915,9 @@ int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
 	return kvm_handle_hva_range(kvm, start, end, 0, kvm_unmap_rmapp);
 }
 
-void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
+int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
 {
-	kvm_handle_hva(kvm, hva, (unsigned long)&pte, kvm_set_pte_rmapp);
+	return kvm_handle_hva(kvm, hva, (unsigned long)&pte, kvm_set_pte_rmapp);
 }
 
 static int kvm_age_rmapp(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
@@ -1925,7 +1960,8 @@ static void rmap_recycle(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn)
 	rmap_head = gfn_to_rmap(vcpu->kvm, gfn, sp);
 
 	kvm_unmap_rmapp(vcpu->kvm, rmap_head, NULL, gfn, sp->role.level, 0);
-	kvm_flush_remote_tlbs(vcpu->kvm);
+	kvm_flush_remote_tlbs_with_address(vcpu->kvm, sp->gfn,
+			KVM_PAGES_PER_HPAGE(sp->role.level));
 }
 
 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
@@ -2441,7 +2477,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
 		account_shadowed(vcpu->kvm, sp);
 		if (level == PT_PAGE_TABLE_LEVEL &&
 		      rmap_write_protect(vcpu, gfn))
-			kvm_flush_remote_tlbs(vcpu->kvm);
+			kvm_flush_remote_tlbs_with_address(vcpu->kvm, gfn, 1);
 
 		if (level > PT_PAGE_TABLE_LEVEL && need_sync)
 			flush |= kvm_sync_pages(vcpu, gfn, &invalid_list);
@@ -2561,7 +2597,7 @@ static void validate_direct_spte(struct kvm_vcpu *vcpu, u64 *sptep,
 			return;
 
 		drop_parent_pte(child, sptep);
-		kvm_flush_remote_tlbs(vcpu->kvm);
+		kvm_flush_remote_tlbs_with_address(vcpu->kvm, child->gfn, 1);
 	}
 }
 
@@ -2985,8 +3021,10 @@ static int mmu_set_spte(struct kvm_vcpu *vcpu, u64 *sptep, unsigned pte_access,
 			ret = RET_PF_EMULATE;
 		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
 	}
+
 	if (set_spte_ret & SET_SPTE_NEED_REMOTE_TLB_FLUSH || flush)
-		kvm_flush_remote_tlbs(vcpu->kvm);
+		kvm_flush_remote_tlbs_with_address(vcpu->kvm, gfn,
+				KVM_PAGES_PER_HPAGE(level));
 
 	if (unlikely(is_mmio_spte(*sptep)))
 		ret = RET_PF_EMULATE;
@@ -5586,8 +5624,13 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
 {
 	struct kvm_memslots *slots;
 	struct kvm_memory_slot *memslot;
+	bool flush_tlb = true;
+	bool flush = false;
 	int i;
 
+	if (kvm_available_flush_tlb_with_range())
+		flush_tlb = false;
+
 	spin_lock(&kvm->mmu_lock);
 	for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
 		slots = __kvm_memslots(kvm, i);
@@ -5599,12 +5642,17 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
 			if (start >= end)
 				continue;
 
-			slot_handle_level_range(kvm, memslot, kvm_zap_rmapp,
-						PT_PAGE_TABLE_LEVEL, PT_MAX_HUGEPAGE_LEVEL,
-						start, end - 1, true);
+			flush |= slot_handle_level_range(kvm, memslot,
+					kvm_zap_rmapp, PT_PAGE_TABLE_LEVEL,
+					PT_MAX_HUGEPAGE_LEVEL, start,
+					end - 1, flush_tlb);
 		}
 	}
 
+	if (flush)
+		kvm_flush_remote_tlbs_with_address(kvm, gfn_start,
+				gfn_end - gfn_start + 1);
+
 	spin_unlock(&kvm->mmu_lock);
 }
 
@@ -5638,12 +5686,13 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
 	 * spte from present to present (changing the spte from present
 	 * to nonpresent will flush all the TLBs immediately), in other
 	 * words, the only case we care is mmu_spte_update() where we
-	 * haved checked SPTE_HOST_WRITEABLE | SPTE_MMU_WRITEABLE
+	 * have checked SPTE_HOST_WRITEABLE | SPTE_MMU_WRITEABLE
 	 * instead of PT_WRITABLE_MASK, that means it does not depend
 	 * on PT_WRITABLE_MASK anymore.
 	 */
 	if (flush)
-		kvm_flush_remote_tlbs(kvm);
+		kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn,
+			memslot->npages);
 }
 
 static bool kvm_mmu_zap_collapsible_spte(struct kvm *kvm,
@@ -5671,7 +5720,13 @@ restart:
 			!kvm_is_reserved_pfn(pfn) &&
 			PageTransCompoundMap(pfn_to_page(pfn))) {
 			pte_list_remove(rmap_head, sptep);
-			need_tlb_flush = 1;
+
+			if (kvm_available_flush_tlb_with_range())
+				kvm_flush_remote_tlbs_with_address(kvm, sp->gfn,
+					KVM_PAGES_PER_HPAGE(sp->role.level));
+			else
+				need_tlb_flush = 1;
+
 			goto restart;
 		}
 	}
@@ -5707,7 +5762,8 @@ void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
 	 * dirty_bitmap.
 	 */
 	if (flush)
-		kvm_flush_remote_tlbs(kvm);
+		kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn,
+				memslot->npages);
 }
 EXPORT_SYMBOL_GPL(kvm_mmu_slot_leaf_clear_dirty);
 
@@ -5725,7 +5781,8 @@ void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
 	lockdep_assert_held(&kvm->slots_lock);
 
 	if (flush)
-		kvm_flush_remote_tlbs(kvm);
+		kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn,
+				memslot->npages);
 }
 EXPORT_SYMBOL_GPL(kvm_mmu_slot_largepage_remove_write_access);
 
@@ -5742,7 +5799,8 @@ void kvm_mmu_slot_set_dirty(struct kvm *kvm,
 
 	/* see kvm_mmu_slot_leaf_clear_dirty */
 	if (flush)
-		kvm_flush_remote_tlbs(kvm);
+		kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn,
+				memslot->npages);
 }
 EXPORT_SYMBOL_GPL(kvm_mmu_slot_set_dirty);
 
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 7cf2185b7eb5..6bdca39829bc 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -894,7 +894,8 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)
 			pte_gpa += (sptep - sp->spt) * sizeof(pt_element_t);
 
 			if (mmu_page_zap_pte(vcpu->kvm, sp, sptep))
-				kvm_flush_remote_tlbs(vcpu->kvm);
+				kvm_flush_remote_tlbs_with_address(vcpu->kvm,
+					sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level));
 
 			if (!rmap_can_add(vcpu))
 				break;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 101f53ccf571..307e5bddb6d9 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -675,11 +675,6 @@ struct svm_cpu_data {
 
 static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data);
 
-struct svm_init_data {
-	int cpu;
-	int r;
-};
-
 static const u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000};
 
 #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges)
@@ -711,17 +706,17 @@ static u32 svm_msrpm_offset(u32 msr)
 
 static inline void clgi(void)
 {
-	asm volatile (__ex(SVM_CLGI));
+	asm volatile (__ex("clgi"));
 }
 
 static inline void stgi(void)
 {
-	asm volatile (__ex(SVM_STGI));
+	asm volatile (__ex("stgi"));
 }
 
 static inline void invlpga(unsigned long addr, u32 asid)
 {
-	asm volatile (__ex(SVM_INVLPGA) : : "a"(addr), "c"(asid));
+	asm volatile (__ex("invlpga %1, %0") : : "c"(asid), "a"(addr));
 }
 
 static int get_npt_level(struct kvm_vcpu *vcpu)
@@ -1456,10 +1451,11 @@ static u64 svm_write_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
 		g_tsc_offset = svm->vmcb->control.tsc_offset -
 			       svm->nested.hsave->control.tsc_offset;
 		svm->nested.hsave->control.tsc_offset = offset;
-	} else
-		trace_kvm_write_tsc_offset(vcpu->vcpu_id,
-					   svm->vmcb->control.tsc_offset,
-					   offset);
+	}
+
+	trace_kvm_write_tsc_offset(vcpu->vcpu_id,
+				   svm->vmcb->control.tsc_offset - g_tsc_offset,
+				   offset);
 
 	svm->vmcb->control.tsc_offset = offset + g_tsc_offset;
 
@@ -2129,6 +2125,13 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
 		goto out;
 	}
 
+	svm->vcpu.arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache, GFP_KERNEL);
+	if (!svm->vcpu.arch.guest_fpu) {
+		printk(KERN_ERR "kvm: failed to allocate vcpu's fpu\n");
+		err = -ENOMEM;
+		goto free_partial_svm;
+	}
+
 	err = kvm_vcpu_init(&svm->vcpu, kvm, id);
 	if (err)
 		goto free_svm;
@@ -2188,6 +2191,8 @@ free_page1:
 uninit:
 	kvm_vcpu_uninit(&svm->vcpu);
 free_svm:
+	kmem_cache_free(x86_fpu_cache, svm->vcpu.arch.guest_fpu);
+free_partial_svm:
 	kmem_cache_free(kvm_vcpu_cache, svm);
 out:
 	return ERR_PTR(err);
@@ -2217,6 +2222,7 @@ static void svm_free_vcpu(struct kvm_vcpu *vcpu)
 	__free_page(virt_to_page(svm->nested.hsave));
 	__free_pages(virt_to_page(svm->nested.msrpm), MSRPM_ALLOC_ORDER);
 	kvm_vcpu_uninit(vcpu);
+	kmem_cache_free(x86_fpu_cache, svm->vcpu.arch.guest_fpu);
 	kmem_cache_free(kvm_vcpu_cache, svm);
 }
 
@@ -3278,6 +3284,8 @@ static inline void copy_vmcb_control_area(struct vmcb *dst_vmcb, struct vmcb *fr
 	dst->event_inj_err        = from->event_inj_err;
 	dst->nested_cr3           = from->nested_cr3;
 	dst->virt_ext              = from->virt_ext;
+	dst->pause_filter_count   = from->pause_filter_count;
+	dst->pause_filter_thresh  = from->pause_filter_thresh;
 }
 
 static int nested_svm_vmexit(struct vcpu_svm *svm)
@@ -3356,6 +3364,11 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
 	nested_vmcb->control.event_inj         = 0;
 	nested_vmcb->control.event_inj_err     = 0;
 
+	nested_vmcb->control.pause_filter_count =
+		svm->vmcb->control.pause_filter_count;
+	nested_vmcb->control.pause_filter_thresh =
+		svm->vmcb->control.pause_filter_thresh;
+
 	/* We always set V_INTR_MASKING and remember the old value in hflags */
 	if (!(svm->vcpu.arch.hflags & HF_VINTR_MASK))
 		nested_vmcb->control.int_ctl &= ~V_INTR_MASKING_MASK;
@@ -3532,6 +3545,11 @@ static void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
 	svm->vmcb->control.event_inj = nested_vmcb->control.event_inj;
 	svm->vmcb->control.event_inj_err = nested_vmcb->control.event_inj_err;
 
+	svm->vmcb->control.pause_filter_count =
+		nested_vmcb->control.pause_filter_count;
+	svm->vmcb->control.pause_filter_thresh =
+		nested_vmcb->control.pause_filter_thresh;
+
 	nested_svm_unmap(page);
 
 	/* Enter Guest-Mode */
@@ -5636,9 +5654,9 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
 		/* Enter guest mode */
 		"push %%" _ASM_AX " \n\t"
 		"mov %c[vmcb](%[svm]), %%" _ASM_AX " \n\t"
-		__ex(SVM_VMLOAD) "\n\t"
-		__ex(SVM_VMRUN) "\n\t"
-		__ex(SVM_VMSAVE) "\n\t"
+		__ex("vmload %%" _ASM_AX) "\n\t"
+		__ex("vmrun %%" _ASM_AX) "\n\t"
+		__ex("vmsave %%" _ASM_AX) "\n\t"
 		"pop %%" _ASM_AX " \n\t"
 
 		/* Save guest registers, load host registers */
@@ -5836,6 +5854,13 @@ static bool svm_cpu_has_accelerated_tpr(void)
 
 static bool svm_has_emulated_msr(int index)
 {
+	switch (index) {
+	case MSR_IA32_MCG_EXT_CTL:
+		return false;
+	default:
+		break;
+	}
+
 	return true;
 }
 
@@ -5924,6 +5949,11 @@ static bool svm_umip_emulated(void)
 	return false;
 }
 
+static bool svm_pt_supported(void)
+{
+	return false;
+}
+
 static bool svm_has_wbinvd_exit(void)
 {
 	return true;
@@ -7053,6 +7083,12 @@ failed:
 	return ret;
 }
 
+static uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu)
+{
+	/* Not supported */
+	return 0;
+}
+
 static int nested_enable_evmcs(struct kvm_vcpu *vcpu,
 				   uint16_t *vmcs_version)
 {
@@ -7159,6 +7195,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
 	.mpx_supported = svm_mpx_supported,
 	.xsaves_supported = svm_xsaves_supported,
 	.umip_emulated = svm_umip_emulated,
+	.pt_supported = svm_pt_supported,
 
 	.set_supported_cpuid = svm_set_supported_cpuid,
 
@@ -7191,6 +7228,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
 	.mem_enc_unreg_region = svm_unregister_enc_region,
 
 	.nested_enable_evmcs = nested_enable_evmcs,
+	.nested_get_evmcs_version = nested_get_evmcs_version,
 };
 
 static int __init svm_init(void)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 0659465a745c..705f40ae2532 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -1254,24 +1254,26 @@ TRACE_EVENT(kvm_hv_stimer_callback,
  * Tracepoint for stimer_expiration.
  */
 TRACE_EVENT(kvm_hv_stimer_expiration,
-	TP_PROTO(int vcpu_id, int timer_index, int msg_send_result),
-	TP_ARGS(vcpu_id, timer_index, msg_send_result),
+	TP_PROTO(int vcpu_id, int timer_index, int direct, int msg_send_result),
+	TP_ARGS(vcpu_id, timer_index, direct, msg_send_result),
 
 	TP_STRUCT__entry(
 		__field(int, vcpu_id)
 		__field(int, timer_index)
+		__field(int, direct)
 		__field(int, msg_send_result)
 	),
 
 	TP_fast_assign(
 		__entry->vcpu_id = vcpu_id;
 		__entry->timer_index = timer_index;
+		__entry->direct = direct;
 		__entry->msg_send_result = msg_send_result;
 	),
 
-	TP_printk("vcpu_id %d timer %d msg send result %d",
+	TP_printk("vcpu_id %d timer %d direct %d send result %d",
 		  __entry->vcpu_id, __entry->timer_index,
-		  __entry->msg_send_result)
+		  __entry->direct, __entry->msg_send_result)
 );
 
 /*
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
deleted file mode 100644
index 8d5d984541be..000000000000
--- a/arch/x86/kvm/vmx.c
+++ /dev/null
@@ -1,15252 +0,0 @@
-/*
- * Kernel-based Virtual Machine driver for Linux
- *
- * This module enables machines with Intel VT-x extensions to run virtual
- * machines without emulation or binary translation.
- *
- * Copyright (C) 2006 Qumranet, Inc.
- * Copyright 2010 Red Hat, Inc. and/or its affiliates.
- *
- * Authors:
- *   Avi Kivity   <avi@qumranet.com>
- *   Yaniv Kamay  <yaniv@qumranet.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- */
-
-#include "irq.h"
-#include "mmu.h"
-#include "cpuid.h"
-#include "lapic.h"
-#include "hyperv.h"
-
-#include <linux/kvm_host.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/sched.h>
-#include <linux/moduleparam.h>
-#include <linux/mod_devicetable.h>
-#include <linux/trace_events.h>
-#include <linux/slab.h>
-#include <linux/tboot.h>
-#include <linux/hrtimer.h>
-#include <linux/frame.h>
-#include <linux/nospec.h>
-#include "kvm_cache_regs.h"
-#include "x86.h"
-
-#include <asm/asm.h>
-#include <asm/cpu.h>
-#include <asm/io.h>
-#include <asm/desc.h>
-#include <asm/vmx.h>
-#include <asm/virtext.h>
-#include <asm/mce.h>
-#include <asm/fpu/internal.h>
-#include <asm/perf_event.h>
-#include <asm/debugreg.h>
-#include <asm/kexec.h>
-#include <asm/apic.h>
-#include <asm/irq_remapping.h>
-#include <asm/mmu_context.h>
-#include <asm/spec-ctrl.h>
-#include <asm/mshyperv.h>
-
-#include "trace.h"
-#include "pmu.h"
-#include "vmx_evmcs.h"
-
-#define __ex(x) __kvm_handle_fault_on_reboot(x)
-#define __ex_clear(x, reg) \
-	____kvm_handle_fault_on_reboot(x, "xor " reg ", " reg)
-
-MODULE_AUTHOR("Qumranet");
-MODULE_LICENSE("GPL");
-
-static const struct x86_cpu_id vmx_cpu_id[] = {
-	X86_FEATURE_MATCH(X86_FEATURE_VMX),
-	{}
-};
-MODULE_DEVICE_TABLE(x86cpu, vmx_cpu_id);
-
-static bool __read_mostly enable_vpid = 1;
-module_param_named(vpid, enable_vpid, bool, 0444);
-
-static bool __read_mostly enable_vnmi = 1;
-module_param_named(vnmi, enable_vnmi, bool, S_IRUGO);
-
-static bool __read_mostly flexpriority_enabled = 1;
-module_param_named(flexpriority, flexpriority_enabled, bool, S_IRUGO);
-
-static bool __read_mostly enable_ept = 1;
-module_param_named(ept, enable_ept, bool, S_IRUGO);
-
-static bool __read_mostly enable_unrestricted_guest = 1;
-module_param_named(unrestricted_guest,
-			enable_unrestricted_guest, bool, S_IRUGO);
-
-static bool __read_mostly enable_ept_ad_bits = 1;
-module_param_named(eptad, enable_ept_ad_bits, bool, S_IRUGO);
-
-static bool __read_mostly emulate_invalid_guest_state = true;
-module_param(emulate_invalid_guest_state, bool, S_IRUGO);
-
-static bool __read_mostly fasteoi = 1;
-module_param(fasteoi, bool, S_IRUGO);
-
-static bool __read_mostly enable_apicv = 1;
-module_param(enable_apicv, bool, S_IRUGO);
-
-static bool __read_mostly enable_shadow_vmcs = 1;
-module_param_named(enable_shadow_vmcs, enable_shadow_vmcs, bool, S_IRUGO);
-/*
- * If nested=1, nested virtualization is supported, i.e., guests may use
- * VMX and be a hypervisor for its own guests. If nested=0, guests may not
- * use VMX instructions.
- */
-static bool __read_mostly nested = 1;
-module_param(nested, bool, S_IRUGO);
-
-static bool __read_mostly nested_early_check = 0;
-module_param(nested_early_check, bool, S_IRUGO);
-
-static u64 __read_mostly host_xss;
-
-static bool __read_mostly enable_pml = 1;
-module_param_named(pml, enable_pml, bool, S_IRUGO);
-
-#define MSR_TYPE_R	1
-#define MSR_TYPE_W	2
-#define MSR_TYPE_RW	3
-
-#define MSR_BITMAP_MODE_X2APIC		1
-#define MSR_BITMAP_MODE_X2APIC_APICV	2
-
-#define KVM_VMX_TSC_MULTIPLIER_MAX     0xffffffffffffffffULL
-
-/* Guest_tsc -> host_tsc conversion requires 64-bit division.  */
-static int __read_mostly cpu_preemption_timer_multi;
-static bool __read_mostly enable_preemption_timer = 1;
-#ifdef CONFIG_X86_64
-module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
-#endif
-
-#define KVM_VM_CR0_ALWAYS_OFF (X86_CR0_NW | X86_CR0_CD)
-#define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR0_NE
-#define KVM_VM_CR0_ALWAYS_ON				\
-	(KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | 	\
-	 X86_CR0_WP | X86_CR0_PG | X86_CR0_PE)
-#define KVM_CR4_GUEST_OWNED_BITS				      \
-	(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR      \
-	 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_TSD)
-
-#define KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR4_VMXE
-#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
-#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
-
-#define RMODE_GUEST_OWNED_EFLAGS_BITS (~(X86_EFLAGS_IOPL | X86_EFLAGS_VM))
-
-#define VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE 5
-
-/*
- * Hyper-V requires all of these, so mark them as supported even though
- * they are just treated the same as all-context.
- */
-#define VMX_VPID_EXTENT_SUPPORTED_MASK		\
-	(VMX_VPID_EXTENT_INDIVIDUAL_ADDR_BIT |	\
-	VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT |	\
-	VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT |	\
-	VMX_VPID_EXTENT_SINGLE_NON_GLOBAL_BIT)
-
-/*
- * These 2 parameters are used to config the controls for Pause-Loop Exiting:
- * ple_gap:    upper bound on the amount of time between two successive
- *             executions of PAUSE in a loop. Also indicate if ple enabled.
- *             According to test, this time is usually smaller than 128 cycles.
- * ple_window: upper bound on the amount of time a guest is allowed to execute
- *             in a PAUSE loop. Tests indicate that most spinlocks are held for
- *             less than 2^12 cycles
- * Time is measured based on a counter that runs at the same rate as the TSC,
- * refer SDM volume 3b section 21.6.13 & 22.1.3.
- */
-static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
-module_param(ple_gap, uint, 0444);
-
-static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
-module_param(ple_window, uint, 0444);
-
-/* Default doubles per-vcpu window every exit. */
-static unsigned int ple_window_grow = KVM_DEFAULT_PLE_WINDOW_GROW;
-module_param(ple_window_grow, uint, 0444);
-
-/* Default resets per-vcpu window every exit to ple_window. */
-static unsigned int ple_window_shrink = KVM_DEFAULT_PLE_WINDOW_SHRINK;
-module_param(ple_window_shrink, uint, 0444);
-
-/* Default is to compute the maximum so we can never overflow. */
-static unsigned int ple_window_max        = KVM_VMX_DEFAULT_PLE_WINDOW_MAX;
-module_param(ple_window_max, uint, 0444);
-
-extern const ulong vmx_return;
-extern const ulong vmx_early_consistency_check_return;
-
-static DEFINE_STATIC_KEY_FALSE(vmx_l1d_should_flush);
-static DEFINE_STATIC_KEY_FALSE(vmx_l1d_flush_cond);
-static DEFINE_MUTEX(vmx_l1d_flush_mutex);
-
-/* Storage for pre module init parameter parsing */
-static enum vmx_l1d_flush_state __read_mostly vmentry_l1d_flush_param = VMENTER_L1D_FLUSH_AUTO;
-
-static const struct {
-	const char *option;
-	bool for_parse;
-} vmentry_l1d_param[] = {
-	[VMENTER_L1D_FLUSH_AUTO]	 = {"auto", true},
-	[VMENTER_L1D_FLUSH_NEVER]	 = {"never", true},
-	[VMENTER_L1D_FLUSH_COND]	 = {"cond", true},
-	[VMENTER_L1D_FLUSH_ALWAYS]	 = {"always", true},
-	[VMENTER_L1D_FLUSH_EPT_DISABLED] = {"EPT disabled", false},
-	[VMENTER_L1D_FLUSH_NOT_REQUIRED] = {"not required", false},
-};
-
-#define L1D_CACHE_ORDER 4
-static void *vmx_l1d_flush_pages;
-
-static int vmx_setup_l1d_flush(enum vmx_l1d_flush_state l1tf)
-{
-	struct page *page;
-	unsigned int i;
-
-	if (!enable_ept) {
-		l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_EPT_DISABLED;
-		return 0;
-	}
-
-	if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES)) {
-		u64 msr;
-
-		rdmsrl(MSR_IA32_ARCH_CAPABILITIES, msr);
-		if (msr & ARCH_CAP_SKIP_VMENTRY_L1DFLUSH) {
-			l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_NOT_REQUIRED;
-			return 0;
-		}
-	}
-
-	/* If set to auto use the default l1tf mitigation method */
-	if (l1tf == VMENTER_L1D_FLUSH_AUTO) {
-		switch (l1tf_mitigation) {
-		case L1TF_MITIGATION_OFF:
-			l1tf = VMENTER_L1D_FLUSH_NEVER;
-			break;
-		case L1TF_MITIGATION_FLUSH_NOWARN:
-		case L1TF_MITIGATION_FLUSH:
-		case L1TF_MITIGATION_FLUSH_NOSMT:
-			l1tf = VMENTER_L1D_FLUSH_COND;
-			break;
-		case L1TF_MITIGATION_FULL:
-		case L1TF_MITIGATION_FULL_FORCE:
-			l1tf = VMENTER_L1D_FLUSH_ALWAYS;
-			break;
-		}
-	} else if (l1tf_mitigation == L1TF_MITIGATION_FULL_FORCE) {
-		l1tf = VMENTER_L1D_FLUSH_ALWAYS;
-	}
-
-	if (l1tf != VMENTER_L1D_FLUSH_NEVER && !vmx_l1d_flush_pages &&
-	    !boot_cpu_has(X86_FEATURE_FLUSH_L1D)) {
-		page = alloc_pages(GFP_KERNEL, L1D_CACHE_ORDER);
-		if (!page)
-			return -ENOMEM;
-		vmx_l1d_flush_pages = page_address(page);
-
-		/*
-		 * Initialize each page with a different pattern in
-		 * order to protect against KSM in the nested
-		 * virtualization case.
-		 */
-		for (i = 0; i < 1u << L1D_CACHE_ORDER; ++i) {
-			memset(vmx_l1d_flush_pages + i * PAGE_SIZE, i + 1,
-			       PAGE_SIZE);
-		}
-	}
-
-	l1tf_vmx_mitigation = l1tf;
-
-	if (l1tf != VMENTER_L1D_FLUSH_NEVER)
-		static_branch_enable(&vmx_l1d_should_flush);
-	else
-		static_branch_disable(&vmx_l1d_should_flush);
-
-	if (l1tf == VMENTER_L1D_FLUSH_COND)
-		static_branch_enable(&vmx_l1d_flush_cond);
-	else
-		static_branch_disable(&vmx_l1d_flush_cond);
-	return 0;
-}
-
-static int vmentry_l1d_flush_parse(const char *s)
-{
-	unsigned int i;
-
-	if (s) {
-		for (i = 0; i < ARRAY_SIZE(vmentry_l1d_param); i++) {
-			if (vmentry_l1d_param[i].for_parse &&
-			    sysfs_streq(s, vmentry_l1d_param[i].option))
-				return i;
-		}
-	}
-	return -EINVAL;
-}
-
-static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp)
-{
-	int l1tf, ret;
-
-	l1tf = vmentry_l1d_flush_parse(s);
-	if (l1tf < 0)
-		return l1tf;
-
-	if (!boot_cpu_has(X86_BUG_L1TF))
-		return 0;
-
-	/*
-	 * Has vmx_init() run already? If not then this is the pre init
-	 * parameter parsing. In that case just store the value and let
-	 * vmx_init() do the proper setup after enable_ept has been
-	 * established.
-	 */
-	if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_AUTO) {
-		vmentry_l1d_flush_param = l1tf;
-		return 0;
-	}
-
-	mutex_lock(&vmx_l1d_flush_mutex);
-	ret = vmx_setup_l1d_flush(l1tf);
-	mutex_unlock(&vmx_l1d_flush_mutex);
-	return ret;
-}
-
-static int vmentry_l1d_flush_get(char *s, const struct kernel_param *kp)
-{
-	if (WARN_ON_ONCE(l1tf_vmx_mitigation >= ARRAY_SIZE(vmentry_l1d_param)))
-		return sprintf(s, "???\n");
-
-	return sprintf(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option);
-}
-
-static const struct kernel_param_ops vmentry_l1d_flush_ops = {
-	.set = vmentry_l1d_flush_set,
-	.get = vmentry_l1d_flush_get,
-};
-module_param_cb(vmentry_l1d_flush, &vmentry_l1d_flush_ops, NULL, 0644);
-
-enum ept_pointers_status {
-	EPT_POINTERS_CHECK = 0,
-	EPT_POINTERS_MATCH = 1,
-	EPT_POINTERS_MISMATCH = 2
-};
-
-struct kvm_vmx {
-	struct kvm kvm;
-
-	unsigned int tss_addr;
-	bool ept_identity_pagetable_done;
-	gpa_t ept_identity_map_addr;
-
-	enum ept_pointers_status ept_pointers_match;
-	spinlock_t ept_pointer_lock;
-};
-
-#define NR_AUTOLOAD_MSRS 8
-
-struct vmcs_hdr {
-	u32 revision_id:31;
-	u32 shadow_vmcs:1;
-};
-
-struct vmcs {
-	struct vmcs_hdr hdr;
-	u32 abort;
-	char data[0];
-};
-
-/*
- * vmcs_host_state tracks registers that are loaded from the VMCS on VMEXIT
- * and whose values change infrequently, but are not constant.  I.e. this is
- * used as a write-through cache of the corresponding VMCS fields.
- */
-struct vmcs_host_state {
-	unsigned long cr3;	/* May not match real cr3 */
-	unsigned long cr4;	/* May not match real cr4 */
-	unsigned long gs_base;
-	unsigned long fs_base;
-
-	u16           fs_sel, gs_sel, ldt_sel;
-#ifdef CONFIG_X86_64
-	u16           ds_sel, es_sel;
-#endif
-};
-
-/*
- * Track a VMCS that may be loaded on a certain CPU. If it is (cpu!=-1), also
- * remember whether it was VMLAUNCHed, and maintain a linked list of all VMCSs
- * loaded on this CPU (so we can clear them if the CPU goes down).
- */
-struct loaded_vmcs {
-	struct vmcs *vmcs;
-	struct vmcs *shadow_vmcs;
-	int cpu;
-	bool launched;
-	bool nmi_known_unmasked;
-	bool hv_timer_armed;
-	/* Support for vnmi-less CPUs */
-	int soft_vnmi_blocked;
-	ktime_t entry_time;
-	s64 vnmi_blocked_time;
-	unsigned long *msr_bitmap;
-	struct list_head loaded_vmcss_on_cpu_link;
-	struct vmcs_host_state host_state;
-};
-
-struct shared_msr_entry {
-	unsigned index;
-	u64 data;
-	u64 mask;
-};
-
-/*
- * struct vmcs12 describes the state that our guest hypervisor (L1) keeps for a
- * single nested guest (L2), hence the name vmcs12. Any VMX implementation has
- * a VMCS structure, and vmcs12 is our emulated VMX's VMCS. This structure is
- * stored in guest memory specified by VMPTRLD, but is opaque to the guest,
- * which must access it using VMREAD/VMWRITE/VMCLEAR instructions.
- * More than one of these structures may exist, if L1 runs multiple L2 guests.
- * nested_vmx_run() will use the data here to build the vmcs02: a VMCS for the
- * underlying hardware which will be used to run L2.
- * This structure is packed to ensure that its layout is identical across
- * machines (necessary for live migration).
- *
- * IMPORTANT: Changing the layout of existing fields in this structure
- * will break save/restore compatibility with older kvm releases. When
- * adding new fields, either use space in the reserved padding* arrays
- * or add the new fields to the end of the structure.
- */
-typedef u64 natural_width;
-struct __packed vmcs12 {
-	/* According to the Intel spec, a VMCS region must start with the
-	 * following two fields. Then follow implementation-specific data.
-	 */
-	struct vmcs_hdr hdr;
-	u32 abort;
-
-	u32 launch_state; /* set to 0 by VMCLEAR, to 1 by VMLAUNCH */
-	u32 padding[7]; /* room for future expansion */
-
-	u64 io_bitmap_a;
-	u64 io_bitmap_b;
-	u64 msr_bitmap;
-	u64 vm_exit_msr_store_addr;
-	u64 vm_exit_msr_load_addr;
-	u64 vm_entry_msr_load_addr;
-	u64 tsc_offset;
-	u64 virtual_apic_page_addr;
-	u64 apic_access_addr;
-	u64 posted_intr_desc_addr;
-	u64 ept_pointer;
-	u64 eoi_exit_bitmap0;
-	u64 eoi_exit_bitmap1;
-	u64 eoi_exit_bitmap2;
-	u64 eoi_exit_bitmap3;
-	u64 xss_exit_bitmap;
-	u64 guest_physical_address;
-	u64 vmcs_link_pointer;
-	u64 guest_ia32_debugctl;
-	u64 guest_ia32_pat;
-	u64 guest_ia32_efer;
-	u64 guest_ia32_perf_global_ctrl;
-	u64 guest_pdptr0;
-	u64 guest_pdptr1;
-	u64 guest_pdptr2;
-	u64 guest_pdptr3;
-	u64 guest_bndcfgs;
-	u64 host_ia32_pat;
-	u64 host_ia32_efer;
-	u64 host_ia32_perf_global_ctrl;
-	u64 vmread_bitmap;
-	u64 vmwrite_bitmap;
-	u64 vm_function_control;
-	u64 eptp_list_address;
-	u64 pml_address;
-	u64 padding64[3]; /* room for future expansion */
-	/*
-	 * To allow migration of L1 (complete with its L2 guests) between
-	 * machines of different natural widths (32 or 64 bit), we cannot have
-	 * unsigned long fields with no explict size. We use u64 (aliased
-	 * natural_width) instead. Luckily, x86 is little-endian.
-	 */
-	natural_width cr0_guest_host_mask;
-	natural_width cr4_guest_host_mask;
-	natural_width cr0_read_shadow;
-	natural_width cr4_read_shadow;
-	natural_width cr3_target_value0;
-	natural_width cr3_target_value1;
-	natural_width cr3_target_value2;
-	natural_width cr3_target_value3;
-	natural_width exit_qualification;
-	natural_width guest_linear_address;
-	natural_width guest_cr0;
-	natural_width guest_cr3;
-	natural_width guest_cr4;
-	natural_width guest_es_base;
-	natural_width guest_cs_base;
-	natural_width guest_ss_base;
-	natural_width guest_ds_base;
-	natural_width guest_fs_base;
-	natural_width guest_gs_base;
-	natural_width guest_ldtr_base;
-	natural_width guest_tr_base;
-	natural_width guest_gdtr_base;
-	natural_width guest_idtr_base;
-	natural_width guest_dr7;
-	natural_width guest_rsp;
-	natural_width guest_rip;
-	natural_width guest_rflags;
-	natural_width guest_pending_dbg_exceptions;
-	natural_width guest_sysenter_esp;
-	natural_width guest_sysenter_eip;
-	natural_width host_cr0;
-	natural_width host_cr3;
-	natural_width host_cr4;
-	natural_width host_fs_base;
-	natural_width host_gs_base;
-	natural_width host_tr_base;
-	natural_width host_gdtr_base;
-	natural_width host_idtr_base;
-	natural_width host_ia32_sysenter_esp;
-	natural_width host_ia32_sysenter_eip;
-	natural_width host_rsp;
-	natural_width host_rip;
-	natural_width paddingl[8]; /* room for future expansion */
-	u32 pin_based_vm_exec_control;
-	u32 cpu_based_vm_exec_control;
-	u32 exception_bitmap;
-	u32 page_fault_error_code_mask;
-	u32 page_fault_error_code_match;
-	u32 cr3_target_count;
-	u32 vm_exit_controls;
-	u32 vm_exit_msr_store_count;
-	u32 vm_exit_msr_load_count;
-	u32 vm_entry_controls;
-	u32 vm_entry_msr_load_count;
-	u32 vm_entry_intr_info_field;
-	u32 vm_entry_exception_error_code;
-	u32 vm_entry_instruction_len;
-	u32 tpr_threshold;
-	u32 secondary_vm_exec_control;
-	u32 vm_instruction_error;
-	u32 vm_exit_reason;
-	u32 vm_exit_intr_info;
-	u32 vm_exit_intr_error_code;
-	u32 idt_vectoring_info_field;
-	u32 idt_vectoring_error_code;
-	u32 vm_exit_instruction_len;
-	u32 vmx_instruction_info;
-	u32 guest_es_limit;
-	u32 guest_cs_limit;
-	u32 guest_ss_limit;
-	u32 guest_ds_limit;
-	u32 guest_fs_limit;
-	u32 guest_gs_limit;
-	u32 guest_ldtr_limit;
-	u32 guest_tr_limit;
-	u32 guest_gdtr_limit;
-	u32 guest_idtr_limit;
-	u32 guest_es_ar_bytes;
-	u32 guest_cs_ar_bytes;
-	u32 guest_ss_ar_bytes;
-	u32 guest_ds_ar_bytes;
-	u32 guest_fs_ar_bytes;
-	u32 guest_gs_ar_bytes;
-	u32 guest_ldtr_ar_bytes;
-	u32 guest_tr_ar_bytes;
-	u32 guest_interruptibility_info;
-	u32 guest_activity_state;
-	u32 guest_sysenter_cs;
-	u32 host_ia32_sysenter_cs;
-	u32 vmx_preemption_timer_value;
-	u32 padding32[7]; /* room for future expansion */
-	u16 virtual_processor_id;
-	u16 posted_intr_nv;
-	u16 guest_es_selector;
-	u16 guest_cs_selector;
-	u16 guest_ss_selector;
-	u16 guest_ds_selector;
-	u16 guest_fs_selector;
-	u16 guest_gs_selector;
-	u16 guest_ldtr_selector;
-	u16 guest_tr_selector;
-	u16 guest_intr_status;
-	u16 host_es_selector;
-	u16 host_cs_selector;
-	u16 host_ss_selector;
-	u16 host_ds_selector;
-	u16 host_fs_selector;
-	u16 host_gs_selector;
-	u16 host_tr_selector;
-	u16 guest_pml_index;
-};
-
-/*
- * For save/restore compatibility, the vmcs12 field offsets must not change.
- */
-#define CHECK_OFFSET(field, loc)				\
-	BUILD_BUG_ON_MSG(offsetof(struct vmcs12, field) != (loc),	\
-		"Offset of " #field " in struct vmcs12 has changed.")
-
-static inline void vmx_check_vmcs12_offsets(void) {
-	CHECK_OFFSET(hdr, 0);
-	CHECK_OFFSET(abort, 4);
-	CHECK_OFFSET(launch_state, 8);
-	CHECK_OFFSET(io_bitmap_a, 40);
-	CHECK_OFFSET(io_bitmap_b, 48);
-	CHECK_OFFSET(msr_bitmap, 56);
-	CHECK_OFFSET(vm_exit_msr_store_addr, 64);
-	CHECK_OFFSET(vm_exit_msr_load_addr, 72);
-	CHECK_OFFSET(vm_entry_msr_load_addr, 80);
-	CHECK_OFFSET(tsc_offset, 88);
-	CHECK_OFFSET(virtual_apic_page_addr, 96);
-	CHECK_OFFSET(apic_access_addr, 104);
-	CHECK_OFFSET(posted_intr_desc_addr, 112);
-	CHECK_OFFSET(ept_pointer, 120);
-	CHECK_OFFSET(eoi_exit_bitmap0, 128);
-	CHECK_OFFSET(eoi_exit_bitmap1, 136);
-	CHECK_OFFSET(eoi_exit_bitmap2, 144);
-	CHECK_OFFSET(eoi_exit_bitmap3, 152);
-	CHECK_OFFSET(xss_exit_bitmap, 160);
-	CHECK_OFFSET(guest_physical_address, 168);
-	CHECK_OFFSET(vmcs_link_pointer, 176);
-	CHECK_OFFSET(guest_ia32_debugctl, 184);
-	CHECK_OFFSET(guest_ia32_pat, 192);
-	CHECK_OFFSET(guest_ia32_efer, 200);
-	CHECK_OFFSET(guest_ia32_perf_global_ctrl, 208);
-	CHECK_OFFSET(guest_pdptr0, 216);
-	CHECK_OFFSET(guest_pdptr1, 224);
-	CHECK_OFFSET(guest_pdptr2, 232);
-	CHECK_OFFSET(guest_pdptr3, 240);
-	CHECK_OFFSET(guest_bndcfgs, 248);
-	CHECK_OFFSET(host_ia32_pat, 256);
-	CHECK_OFFSET(host_ia32_efer, 264);
-	CHECK_OFFSET(host_ia32_perf_global_ctrl, 272);
-	CHECK_OFFSET(vmread_bitmap, 280);
-	CHECK_OFFSET(vmwrite_bitmap, 288);
-	CHECK_OFFSET(vm_function_control, 296);
-	CHECK_OFFSET(eptp_list_address, 304);
-	CHECK_OFFSET(pml_address, 312);
-	CHECK_OFFSET(cr0_guest_host_mask, 344);
-	CHECK_OFFSET(cr4_guest_host_mask, 352);
-	CHECK_OFFSET(cr0_read_shadow, 360);
-	CHECK_OFFSET(cr4_read_shadow, 368);
-	CHECK_OFFSET(cr3_target_value0, 376);
-	CHECK_OFFSET(cr3_target_value1, 384);
-	CHECK_OFFSET(cr3_target_value2, 392);
-	CHECK_OFFSET(cr3_target_value3, 400);
-	CHECK_OFFSET(exit_qualification, 408);
-	CHECK_OFFSET(guest_linear_address, 416);
-	CHECK_OFFSET(guest_cr0, 424);
-	CHECK_OFFSET(guest_cr3, 432);
-	CHECK_OFFSET(guest_cr4, 440);
-	CHECK_OFFSET(guest_es_base, 448);
-	CHECK_OFFSET(guest_cs_base, 456);
-	CHECK_OFFSET(guest_ss_base, 464);
-	CHECK_OFFSET(guest_ds_base, 472);
-	CHECK_OFFSET(guest_fs_base, 480);
-	CHECK_OFFSET(guest_gs_base, 488);
-	CHECK_OFFSET(guest_ldtr_base, 496);
-	CHECK_OFFSET(guest_tr_base, 504);
-	CHECK_OFFSET(guest_gdtr_base, 512);
-	CHECK_OFFSET(guest_idtr_base, 520);
-	CHECK_OFFSET(guest_dr7, 528);
-	CHECK_OFFSET(guest_rsp, 536);
-	CHECK_OFFSET(guest_rip, 544);
-	CHECK_OFFSET(guest_rflags, 552);
-	CHECK_OFFSET(guest_pending_dbg_exceptions, 560);
-	CHECK_OFFSET(guest_sysenter_esp, 568);
-	CHECK_OFFSET(guest_sysenter_eip, 576);
-	CHECK_OFFSET(host_cr0, 584);
-	CHECK_OFFSET(host_cr3, 592);
-	CHECK_OFFSET(host_cr4, 600);
-	CHECK_OFFSET(host_fs_base, 608);
-	CHECK_OFFSET(host_gs_base, 616);
-	CHECK_OFFSET(host_tr_base, 624);
-	CHECK_OFFSET(host_gdtr_base, 632);
-	CHECK_OFFSET(host_idtr_base, 640);
-	CHECK_OFFSET(host_ia32_sysenter_esp, 648);
-	CHECK_OFFSET(host_ia32_sysenter_eip, 656);
-	CHECK_OFFSET(host_rsp, 664);
-	CHECK_OFFSET(host_rip, 672);
-	CHECK_OFFSET(pin_based_vm_exec_control, 744);
-	CHECK_OFFSET(cpu_based_vm_exec_control, 748);
-	CHECK_OFFSET(exception_bitmap, 752);
-	CHECK_OFFSET(page_fault_error_code_mask, 756);
-	CHECK_OFFSET(page_fault_error_code_match, 760);
-	CHECK_OFFSET(cr3_target_count, 764);
-	CHECK_OFFSET(vm_exit_controls, 768);
-	CHECK_OFFSET(vm_exit_msr_store_count, 772);
-	CHECK_OFFSET(vm_exit_msr_load_count, 776);
-	CHECK_OFFSET(vm_entry_controls, 780);
-	CHECK_OFFSET(vm_entry_msr_load_count, 784);
-	CHECK_OFFSET(vm_entry_intr_info_field, 788);
-	CHECK_OFFSET(vm_entry_exception_error_code, 792);
-	CHECK_OFFSET(vm_entry_instruction_len, 796);
-	CHECK_OFFSET(tpr_threshold, 800);
-	CHECK_OFFSET(secondary_vm_exec_control, 804);
-	CHECK_OFFSET(vm_instruction_error, 808);
-	CHECK_OFFSET(vm_exit_reason, 812);
-	CHECK_OFFSET(vm_exit_intr_info, 816);
-	CHECK_OFFSET(vm_exit_intr_error_code, 820);
-	CHECK_OFFSET(idt_vectoring_info_field, 824);
-	CHECK_OFFSET(idt_vectoring_error_code, 828);
-	CHECK_OFFSET(vm_exit_instruction_len, 832);
-	CHECK_OFFSET(vmx_instruction_info, 836);
-	CHECK_OFFSET(guest_es_limit, 840);
-	CHECK_OFFSET(guest_cs_limit, 844);
-	CHECK_OFFSET(guest_ss_limit, 848);
-	CHECK_OFFSET(guest_ds_limit, 852);
-	CHECK_OFFSET(guest_fs_limit, 856);
-	CHECK_OFFSET(guest_gs_limit, 860);
-	CHECK_OFFSET(guest_ldtr_limit, 864);
-	CHECK_OFFSET(guest_tr_limit, 868);
-	CHECK_OFFSET(guest_gdtr_limit, 872);
-	CHECK_OFFSET(guest_idtr_limit, 876);
-	CHECK_OFFSET(guest_es_ar_bytes, 880);
-	CHECK_OFFSET(guest_cs_ar_bytes, 884);
-	CHECK_OFFSET(guest_ss_ar_bytes, 888);
-	CHECK_OFFSET(guest_ds_ar_bytes, 892);
-	CHECK_OFFSET(guest_fs_ar_bytes, 896);
-	CHECK_OFFSET(guest_gs_ar_bytes, 900);
-	CHECK_OFFSET(guest_ldtr_ar_bytes, 904);
-	CHECK_OFFSET(guest_tr_ar_bytes, 908);
-	CHECK_OFFSET(guest_interruptibility_info, 912);
-	CHECK_OFFSET(guest_activity_state, 916);
-	CHECK_OFFSET(guest_sysenter_cs, 920);
-	CHECK_OFFSET(host_ia32_sysenter_cs, 924);
-	CHECK_OFFSET(vmx_preemption_timer_value, 928);
-	CHECK_OFFSET(virtual_processor_id, 960);
-	CHECK_OFFSET(posted_intr_nv, 962);
-	CHECK_OFFSET(guest_es_selector, 964);
-	CHECK_OFFSET(guest_cs_selector, 966);
-	CHECK_OFFSET(guest_ss_selector, 968);
-	CHECK_OFFSET(guest_ds_selector, 970);
-	CHECK_OFFSET(guest_fs_selector, 972);
-	CHECK_OFFSET(guest_gs_selector, 974);
-	CHECK_OFFSET(guest_ldtr_selector, 976);
-	CHECK_OFFSET(guest_tr_selector, 978);
-	CHECK_OFFSET(guest_intr_status, 980);
-	CHECK_OFFSET(host_es_selector, 982);
-	CHECK_OFFSET(host_cs_selector, 984);
-	CHECK_OFFSET(host_ss_selector, 986);
-	CHECK_OFFSET(host_ds_selector, 988);
-	CHECK_OFFSET(host_fs_selector, 990);
-	CHECK_OFFSET(host_gs_selector, 992);
-	CHECK_OFFSET(host_tr_selector, 994);
-	CHECK_OFFSET(guest_pml_index, 996);
-}
-
-/*
- * VMCS12_REVISION is an arbitrary id that should be changed if the content or
- * layout of struct vmcs12 is changed. MSR_IA32_VMX_BASIC returns this id, and
- * VMPTRLD verifies that the VMCS region that L1 is loading contains this id.
- *
- * IMPORTANT: Changing this value will break save/restore compatibility with
- * older kvm releases.
- */
-#define VMCS12_REVISION 0x11e57ed0
-
-/*
- * VMCS12_SIZE is the number of bytes L1 should allocate for the VMXON region
- * and any VMCS region. Although only sizeof(struct vmcs12) are used by the
- * current implementation, 4K are reserved to avoid future complications.
- */
-#define VMCS12_SIZE 0x1000
-
-/*
- * VMCS12_MAX_FIELD_INDEX is the highest index value used in any
- * supported VMCS12 field encoding.
- */
-#define VMCS12_MAX_FIELD_INDEX 0x17
-
-struct nested_vmx_msrs {
-	/*
-	 * We only store the "true" versions of the VMX capability MSRs. We
-	 * generate the "non-true" versions by setting the must-be-1 bits
-	 * according to the SDM.
-	 */
-	u32 procbased_ctls_low;
-	u32 procbased_ctls_high;
-	u32 secondary_ctls_low;
-	u32 secondary_ctls_high;
-	u32 pinbased_ctls_low;
-	u32 pinbased_ctls_high;
-	u32 exit_ctls_low;
-	u32 exit_ctls_high;
-	u32 entry_ctls_low;
-	u32 entry_ctls_high;
-	u32 misc_low;
-	u32 misc_high;
-	u32 ept_caps;
-	u32 vpid_caps;
-	u64 basic;
-	u64 cr0_fixed0;
-	u64 cr0_fixed1;
-	u64 cr4_fixed0;
-	u64 cr4_fixed1;
-	u64 vmcs_enum;
-	u64 vmfunc_controls;
-};
-
-/*
- * The nested_vmx structure is part of vcpu_vmx, and holds information we need
- * for correct emulation of VMX (i.e., nested VMX) on this vcpu.
- */
-struct nested_vmx {
-	/* Has the level1 guest done vmxon? */
-	bool vmxon;
-	gpa_t vmxon_ptr;
-	bool pml_full;
-
-	/* The guest-physical address of the current VMCS L1 keeps for L2 */
-	gpa_t current_vmptr;
-	/*
-	 * Cache of the guest's VMCS, existing outside of guest memory.
-	 * Loaded from guest memory during VMPTRLD. Flushed to guest
-	 * memory during VMCLEAR and VMPTRLD.
-	 */
-	struct vmcs12 *cached_vmcs12;
-	/*
-	 * Cache of the guest's shadow VMCS, existing outside of guest
-	 * memory. Loaded from guest memory during VM entry. Flushed
-	 * to guest memory during VM exit.
-	 */
-	struct vmcs12 *cached_shadow_vmcs12;
-	/*
-	 * Indicates if the shadow vmcs or enlightened vmcs must be updated
-	 * with the data held by struct vmcs12.
-	 */
-	bool need_vmcs12_sync;
-	bool dirty_vmcs12;
-
-	/*
-	 * vmcs02 has been initialized, i.e. state that is constant for
-	 * vmcs02 has been written to the backing VMCS.  Initialization
-	 * is delayed until L1 actually attempts to run a nested VM.
-	 */
-	bool vmcs02_initialized;
-
-	bool change_vmcs01_virtual_apic_mode;
-
-	/*
-	 * Enlightened VMCS has been enabled. It does not mean that L1 has to
-	 * use it. However, VMX features available to L1 will be limited based
-	 * on what the enlightened VMCS supports.
-	 */
-	bool enlightened_vmcs_enabled;
-
-	/* L2 must run next, and mustn't decide to exit to L1. */
-	bool nested_run_pending;
-
-	struct loaded_vmcs vmcs02;
-
-	/*
-	 * Guest pages referred to in the vmcs02 with host-physical
-	 * pointers, so we must keep them pinned while L2 runs.
-	 */
-	struct page *apic_access_page;
-	struct page *virtual_apic_page;
-	struct page *pi_desc_page;
-	struct pi_desc *pi_desc;
-	bool pi_pending;
-	u16 posted_intr_nv;
-
-	struct hrtimer preemption_timer;
-	bool preemption_timer_expired;
-
-	/* to migrate it to L2 if VM_ENTRY_LOAD_DEBUG_CONTROLS is off */
-	u64 vmcs01_debugctl;
-	u64 vmcs01_guest_bndcfgs;
-
-	u16 vpid02;
-	u16 last_vpid;
-
-	struct nested_vmx_msrs msrs;
-
-	/* SMM related state */
-	struct {
-		/* in VMX operation on SMM entry? */
-		bool vmxon;
-		/* in guest mode on SMM entry? */
-		bool guest_mode;
-	} smm;
-
-	gpa_t hv_evmcs_vmptr;
-	struct page *hv_evmcs_page;
-	struct hv_enlightened_vmcs *hv_evmcs;
-};
-
-#define POSTED_INTR_ON  0
-#define POSTED_INTR_SN  1
-
-/* Posted-Interrupt Descriptor */
-struct pi_desc {
-	u32 pir[8];     /* Posted interrupt requested */
-	union {
-		struct {
-				/* bit 256 - Outstanding Notification */
-			u16	on	: 1,
-				/* bit 257 - Suppress Notification */
-				sn	: 1,
-				/* bit 271:258 - Reserved */
-				rsvd_1	: 14;
-				/* bit 279:272 - Notification Vector */
-			u8	nv;
-				/* bit 287:280 - Reserved */
-			u8	rsvd_2;
-				/* bit 319:288 - Notification Destination */
-			u32	ndst;
-		};
-		u64 control;
-	};
-	u32 rsvd[6];
-} __aligned(64);
-
-static bool pi_test_and_set_on(struct pi_desc *pi_desc)
-{
-	return test_and_set_bit(POSTED_INTR_ON,
-			(unsigned long *)&pi_desc->control);
-}
-
-static bool pi_test_and_clear_on(struct pi_desc *pi_desc)
-{
-	return test_and_clear_bit(POSTED_INTR_ON,
-			(unsigned long *)&pi_desc->control);
-}
-
-static int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
-{
-	return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
-}
-
-static inline void pi_clear_sn(struct pi_desc *pi_desc)
-{
-	return clear_bit(POSTED_INTR_SN,
-			(unsigned long *)&pi_desc->control);
-}
-
-static inline void pi_set_sn(struct pi_desc *pi_desc)
-{
-	return set_bit(POSTED_INTR_SN,
-			(unsigned long *)&pi_desc->control);
-}
-
-static inline void pi_clear_on(struct pi_desc *pi_desc)
-{
-	clear_bit(POSTED_INTR_ON,
-  		  (unsigned long *)&pi_desc->control);
-}
-
-static inline int pi_test_on(struct pi_desc *pi_desc)
-{
-	return test_bit(POSTED_INTR_ON,
-			(unsigned long *)&pi_desc->control);
-}
-
-static inline int pi_test_sn(struct pi_desc *pi_desc)
-{
-	return test_bit(POSTED_INTR_SN,
-			(unsigned long *)&pi_desc->control);
-}
-
-struct vmx_msrs {
-	unsigned int		nr;
-	struct vmx_msr_entry	val[NR_AUTOLOAD_MSRS];
-};
-
-struct vcpu_vmx {
-	struct kvm_vcpu       vcpu;
-	unsigned long         host_rsp;
-	u8                    fail;
-	u8		      msr_bitmap_mode;
-	u32                   exit_intr_info;
-	u32                   idt_vectoring_info;
-	ulong                 rflags;
-	struct shared_msr_entry *guest_msrs;
-	int                   nmsrs;
-	int                   save_nmsrs;
-	bool                  guest_msrs_dirty;
-	unsigned long	      host_idt_base;
-#ifdef CONFIG_X86_64
-	u64 		      msr_host_kernel_gs_base;
-	u64 		      msr_guest_kernel_gs_base;
-#endif
-
-	u64 		      arch_capabilities;
-	u64 		      spec_ctrl;
-
-	u32 vm_entry_controls_shadow;
-	u32 vm_exit_controls_shadow;
-	u32 secondary_exec_control;
-
-	/*
-	 * loaded_vmcs points to the VMCS currently used in this vcpu. For a
-	 * non-nested (L1) guest, it always points to vmcs01. For a nested
-	 * guest (L2), it points to a different VMCS.  loaded_cpu_state points
-	 * to the VMCS whose state is loaded into the CPU registers that only
-	 * need to be switched when transitioning to/from the kernel; a NULL
-	 * value indicates that host state is loaded.
-	 */
-	struct loaded_vmcs    vmcs01;
-	struct loaded_vmcs   *loaded_vmcs;
-	struct loaded_vmcs   *loaded_cpu_state;
-	bool                  __launched; /* temporary, used in vmx_vcpu_run */
-	struct msr_autoload {
-		struct vmx_msrs guest;
-		struct vmx_msrs host;
-	} msr_autoload;
-
-	struct {
-		int vm86_active;
-		ulong save_rflags;
-		struct kvm_segment segs[8];
-	} rmode;
-	struct {
-		u32 bitmask; /* 4 bits per segment (1 bit per field) */
-		struct kvm_save_segment {
-			u16 selector;
-			unsigned long base;
-			u32 limit;
-			u32 ar;
-		} seg[8];
-	} segment_cache;
-	int vpid;
-	bool emulation_required;
-
-	u32 exit_reason;
-
-	/* Posted interrupt descriptor */
-	struct pi_desc pi_desc;
-
-	/* Support for a guest hypervisor (nested VMX) */
-	struct nested_vmx nested;
-
-	/* Dynamic PLE window. */
-	int ple_window;
-	bool ple_window_dirty;
-
-	bool req_immediate_exit;
-
-	/* Support for PML */
-#define PML_ENTITY_NUM		512
-	struct page *pml_pg;
-
-	/* apic deadline value in host tsc */
-	u64 hv_deadline_tsc;
-
-	u64 current_tsc_ratio;
-
-	u32 host_pkru;
-
-	unsigned long host_debugctlmsr;
-
-	/*
-	 * Only bits masked by msr_ia32_feature_control_valid_bits can be set in
-	 * msr_ia32_feature_control. FEATURE_CONTROL_LOCKED is always included
-	 * in msr_ia32_feature_control_valid_bits.
-	 */
-	u64 msr_ia32_feature_control;
-	u64 msr_ia32_feature_control_valid_bits;
-	u64 ept_pointer;
-};
-
-enum segment_cache_field {
-	SEG_FIELD_SEL = 0,
-	SEG_FIELD_BASE = 1,
-	SEG_FIELD_LIMIT = 2,
-	SEG_FIELD_AR = 3,
-
-	SEG_FIELD_NR = 4
-};
-
-static inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm)
-{
-	return container_of(kvm, struct kvm_vmx, kvm);
-}
-
-static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
-{
-	return container_of(vcpu, struct vcpu_vmx, vcpu);
-}
-
-static struct pi_desc *vcpu_to_pi_desc(struct kvm_vcpu *vcpu)
-{
-	return &(to_vmx(vcpu)->pi_desc);
-}
-
-#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
-#define VMCS12_OFFSET(x) offsetof(struct vmcs12, x)
-#define FIELD(number, name)	[ROL16(number, 6)] = VMCS12_OFFSET(name)
-#define FIELD64(number, name)						\
-	FIELD(number, name),						\
-	[ROL16(number##_HIGH, 6)] = VMCS12_OFFSET(name) + sizeof(u32)
-
-
-static u16 shadow_read_only_fields[] = {
-#define SHADOW_FIELD_RO(x) x,
-#include "vmx_shadow_fields.h"
-};
-static int max_shadow_read_only_fields =
-	ARRAY_SIZE(shadow_read_only_fields);
-
-static u16 shadow_read_write_fields[] = {
-#define SHADOW_FIELD_RW(x) x,
-#include "vmx_shadow_fields.h"
-};
-static int max_shadow_read_write_fields =
-	ARRAY_SIZE(shadow_read_write_fields);
-
-static const unsigned short vmcs_field_to_offset_table[] = {
-	FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id),
-	FIELD(POSTED_INTR_NV, posted_intr_nv),
-	FIELD(GUEST_ES_SELECTOR, guest_es_selector),
-	FIELD(GUEST_CS_SELECTOR, guest_cs_selector),
-	FIELD(GUEST_SS_SELECTOR, guest_ss_selector),
-	FIELD(GUEST_DS_SELECTOR, guest_ds_selector),
-	FIELD(GUEST_FS_SELECTOR, guest_fs_selector),
-	FIELD(GUEST_GS_SELECTOR, guest_gs_selector),
-	FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector),
-	FIELD(GUEST_TR_SELECTOR, guest_tr_selector),
-	FIELD(GUEST_INTR_STATUS, guest_intr_status),
-	FIELD(GUEST_PML_INDEX, guest_pml_index),
-	FIELD(HOST_ES_SELECTOR, host_es_selector),
-	FIELD(HOST_CS_SELECTOR, host_cs_selector),
-	FIELD(HOST_SS_SELECTOR, host_ss_selector),
-	FIELD(HOST_DS_SELECTOR, host_ds_selector),
-	FIELD(HOST_FS_SELECTOR, host_fs_selector),
-	FIELD(HOST_GS_SELECTOR, host_gs_selector),
-	FIELD(HOST_TR_SELECTOR, host_tr_selector),
-	FIELD64(IO_BITMAP_A, io_bitmap_a),
-	FIELD64(IO_BITMAP_B, io_bitmap_b),
-	FIELD64(MSR_BITMAP, msr_bitmap),
-	FIELD64(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr),
-	FIELD64(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr),
-	FIELD64(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr),
-	FIELD64(PML_ADDRESS, pml_address),
-	FIELD64(TSC_OFFSET, tsc_offset),
-	FIELD64(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr),
-	FIELD64(APIC_ACCESS_ADDR, apic_access_addr),
-	FIELD64(POSTED_INTR_DESC_ADDR, posted_intr_desc_addr),
-	FIELD64(VM_FUNCTION_CONTROL, vm_function_control),
-	FIELD64(EPT_POINTER, ept_pointer),
-	FIELD64(EOI_EXIT_BITMAP0, eoi_exit_bitmap0),
-	FIELD64(EOI_EXIT_BITMAP1, eoi_exit_bitmap1),
-	FIELD64(EOI_EXIT_BITMAP2, eoi_exit_bitmap2),
-	FIELD64(EOI_EXIT_BITMAP3, eoi_exit_bitmap3),
-	FIELD64(EPTP_LIST_ADDRESS, eptp_list_address),
-	FIELD64(VMREAD_BITMAP, vmread_bitmap),
-	FIELD64(VMWRITE_BITMAP, vmwrite_bitmap),
-	FIELD64(XSS_EXIT_BITMAP, xss_exit_bitmap),
-	FIELD64(GUEST_PHYSICAL_ADDRESS, guest_physical_address),
-	FIELD64(VMCS_LINK_POINTER, vmcs_link_pointer),
-	FIELD64(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl),
-	FIELD64(GUEST_IA32_PAT, guest_ia32_pat),
-	FIELD64(GUEST_IA32_EFER, guest_ia32_efer),
-	FIELD64(GUEST_IA32_PERF_GLOBAL_CTRL, guest_ia32_perf_global_ctrl),
-	FIELD64(GUEST_PDPTR0, guest_pdptr0),
-	FIELD64(GUEST_PDPTR1, guest_pdptr1),
-	FIELD64(GUEST_PDPTR2, guest_pdptr2),
-	FIELD64(GUEST_PDPTR3, guest_pdptr3),
-	FIELD64(GUEST_BNDCFGS, guest_bndcfgs),
-	FIELD64(HOST_IA32_PAT, host_ia32_pat),
-	FIELD64(HOST_IA32_EFER, host_ia32_efer),
-	FIELD64(HOST_IA32_PERF_GLOBAL_CTRL, host_ia32_perf_global_ctrl),
-	FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control),
-	FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control),
-	FIELD(EXCEPTION_BITMAP, exception_bitmap),
-	FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask),
-	FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match),
-	FIELD(CR3_TARGET_COUNT, cr3_target_count),
-	FIELD(VM_EXIT_CONTROLS, vm_exit_controls),
-	FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count),
-	FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count),
-	FIELD(VM_ENTRY_CONTROLS, vm_entry_controls),
-	FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count),
-	FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field),
-	FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE, vm_entry_exception_error_code),
-	FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len),
-	FIELD(TPR_THRESHOLD, tpr_threshold),
-	FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control),
-	FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error),
-	FIELD(VM_EXIT_REASON, vm_exit_reason),
-	FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info),
-	FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code),
-	FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field),
-	FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code),
-	FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len),
-	FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info),
-	FIELD(GUEST_ES_LIMIT, guest_es_limit),
-	FIELD(GUEST_CS_LIMIT, guest_cs_limit),
-	FIELD(GUEST_SS_LIMIT, guest_ss_limit),
-	FIELD(GUEST_DS_LIMIT, guest_ds_limit),
-	FIELD(GUEST_FS_LIMIT, guest_fs_limit),
-	FIELD(GUEST_GS_LIMIT, guest_gs_limit),
-	FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit),
-	FIELD(GUEST_TR_LIMIT, guest_tr_limit),
-	FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit),
-	FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit),
-	FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes),
-	FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes),
-	FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes),
-	FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes),
-	FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes),
-	FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes),
-	FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes),
-	FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes),
-	FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info),
-	FIELD(GUEST_ACTIVITY_STATE, guest_activity_state),
-	FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs),
-	FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs),
-	FIELD(VMX_PREEMPTION_TIMER_VALUE, vmx_preemption_timer_value),
-	FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask),
-	FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask),
-	FIELD(CR0_READ_SHADOW, cr0_read_shadow),
-	FIELD(CR4_READ_SHADOW, cr4_read_shadow),
-	FIELD(CR3_TARGET_VALUE0, cr3_target_value0),
-	FIELD(CR3_TARGET_VALUE1, cr3_target_value1),
-	FIELD(CR3_TARGET_VALUE2, cr3_target_value2),
-	FIELD(CR3_TARGET_VALUE3, cr3_target_value3),
-	FIELD(EXIT_QUALIFICATION, exit_qualification),
-	FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address),
-	FIELD(GUEST_CR0, guest_cr0),
-	FIELD(GUEST_CR3, guest_cr3),
-	FIELD(GUEST_CR4, guest_cr4),
-	FIELD(GUEST_ES_BASE, guest_es_base),
-	FIELD(GUEST_CS_BASE, guest_cs_base),
-	FIELD(GUEST_SS_BASE, guest_ss_base),
-	FIELD(GUEST_DS_BASE, guest_ds_base),
-	FIELD(GUEST_FS_BASE, guest_fs_base),
-	FIELD(GUEST_GS_BASE, guest_gs_base),
-	FIELD(GUEST_LDTR_BASE, guest_ldtr_base),
-	FIELD(GUEST_TR_BASE, guest_tr_base),
-	FIELD(GUEST_GDTR_BASE, guest_gdtr_base),
-	FIELD(GUEST_IDTR_BASE, guest_idtr_base),
-	FIELD(GUEST_DR7, guest_dr7),
-	FIELD(GUEST_RSP, guest_rsp),
-	FIELD(GUEST_RIP, guest_rip),
-	FIELD(GUEST_RFLAGS, guest_rflags),
-	FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions),
-	FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp),
-	FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip),
-	FIELD(HOST_CR0, host_cr0),
-	FIELD(HOST_CR3, host_cr3),
-	FIELD(HOST_CR4, host_cr4),
-	FIELD(HOST_FS_BASE, host_fs_base),
-	FIELD(HOST_GS_BASE, host_gs_base),
-	FIELD(HOST_TR_BASE, host_tr_base),
-	FIELD(HOST_GDTR_BASE, host_gdtr_base),
-	FIELD(HOST_IDTR_BASE, host_idtr_base),
-	FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp),
-	FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip),
-	FIELD(HOST_RSP, host_rsp),
-	FIELD(HOST_RIP, host_rip),
-};
-
-static inline short vmcs_field_to_offset(unsigned long field)
-{
-	const size_t size = ARRAY_SIZE(vmcs_field_to_offset_table);
-	unsigned short offset;
-	unsigned index;
-
-	if (field >> 15)
-		return -ENOENT;
-
-	index = ROL16(field, 6);
-	if (index >= size)
-		return -ENOENT;
-
-	index = array_index_nospec(index, size);
-	offset = vmcs_field_to_offset_table[index];
-	if (offset == 0)
-		return -ENOENT;
-	return offset;
-}
-
-static inline struct vmcs12 *get_vmcs12(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.cached_vmcs12;
-}
-
-static inline struct vmcs12 *get_shadow_vmcs12(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.cached_shadow_vmcs12;
-}
-
-static bool nested_ept_ad_enabled(struct kvm_vcpu *vcpu);
-static unsigned long nested_ept_get_cr3(struct kvm_vcpu *vcpu);
-static u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa);
-static bool vmx_xsaves_supported(void);
-static void vmx_set_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg);
-static void vmx_get_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg);
-static bool guest_state_valid(struct kvm_vcpu *vcpu);
-static u32 vmx_segment_access_rights(struct kvm_segment *var);
-static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx);
-static bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu);
-static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
-static bool nested_vmx_is_page_fault_vmexit(struct vmcs12 *vmcs12,
-					    u16 error_code);
-static void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu);
-static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
-							  u32 msr, int type);
-
-static DEFINE_PER_CPU(struct vmcs *, vmxarea);
-static DEFINE_PER_CPU(struct vmcs *, current_vmcs);
-/*
- * We maintain a per-CPU linked-list of VMCS loaded on that CPU. This is needed
- * when a CPU is brought down, and we need to VMCLEAR all VMCSs loaded on it.
- */
-static DEFINE_PER_CPU(struct list_head, loaded_vmcss_on_cpu);
-
-/*
- * We maintian a per-CPU linked-list of vCPU, so in wakeup_handler() we
- * can find which vCPU should be waken up.
- */
-static DEFINE_PER_CPU(struct list_head, blocked_vcpu_on_cpu);
-static DEFINE_PER_CPU(spinlock_t, blocked_vcpu_on_cpu_lock);
-
-enum {
-	VMX_VMREAD_BITMAP,
-	VMX_VMWRITE_BITMAP,
-	VMX_BITMAP_NR
-};
-
-static unsigned long *vmx_bitmap[VMX_BITMAP_NR];
-
-#define vmx_vmread_bitmap                    (vmx_bitmap[VMX_VMREAD_BITMAP])
-#define vmx_vmwrite_bitmap                   (vmx_bitmap[VMX_VMWRITE_BITMAP])
-
-static bool cpu_has_load_ia32_efer;
-static bool cpu_has_load_perf_global_ctrl;
-
-static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS);
-static DEFINE_SPINLOCK(vmx_vpid_lock);
-
-static struct vmcs_config {
-	int size;
-	int order;
-	u32 basic_cap;
-	u32 revision_id;
-	u32 pin_based_exec_ctrl;
-	u32 cpu_based_exec_ctrl;
-	u32 cpu_based_2nd_exec_ctrl;
-	u32 vmexit_ctrl;
-	u32 vmentry_ctrl;
-	struct nested_vmx_msrs nested;
-} vmcs_config;
-
-static struct vmx_capability {
-	u32 ept;
-	u32 vpid;
-} vmx_capability;
-
-#define VMX_SEGMENT_FIELD(seg)					\
-	[VCPU_SREG_##seg] = {                                   \
-		.selector = GUEST_##seg##_SELECTOR,		\
-		.base = GUEST_##seg##_BASE,		   	\
-		.limit = GUEST_##seg##_LIMIT,		   	\
-		.ar_bytes = GUEST_##seg##_AR_BYTES,	   	\
-	}
-
-static const struct kvm_vmx_segment_field {
-	unsigned selector;
-	unsigned base;
-	unsigned limit;
-	unsigned ar_bytes;
-} kvm_vmx_segment_fields[] = {
-	VMX_SEGMENT_FIELD(CS),
-	VMX_SEGMENT_FIELD(DS),
-	VMX_SEGMENT_FIELD(ES),
-	VMX_SEGMENT_FIELD(FS),
-	VMX_SEGMENT_FIELD(GS),
-	VMX_SEGMENT_FIELD(SS),
-	VMX_SEGMENT_FIELD(TR),
-	VMX_SEGMENT_FIELD(LDTR),
-};
-
-static u64 host_efer;
-
-static void ept_save_pdptrs(struct kvm_vcpu *vcpu);
-
-/*
- * Keep MSR_STAR at the end, as setup_msrs() will try to optimize it
- * away by decrementing the array size.
- */
-static const u32 vmx_msr_index[] = {
-#ifdef CONFIG_X86_64
-	MSR_SYSCALL_MASK, MSR_LSTAR, MSR_CSTAR,
-#endif
-	MSR_EFER, MSR_TSC_AUX, MSR_STAR,
-};
-
-DEFINE_STATIC_KEY_FALSE(enable_evmcs);
-
-#define current_evmcs ((struct hv_enlightened_vmcs *)this_cpu_read(current_vmcs))
-
-#define KVM_EVMCS_VERSION 1
-
-/*
- * Enlightened VMCSv1 doesn't support these:
- *
- *	POSTED_INTR_NV                  = 0x00000002,
- *	GUEST_INTR_STATUS               = 0x00000810,
- *	APIC_ACCESS_ADDR		= 0x00002014,
- *	POSTED_INTR_DESC_ADDR           = 0x00002016,
- *	EOI_EXIT_BITMAP0                = 0x0000201c,
- *	EOI_EXIT_BITMAP1                = 0x0000201e,
- *	EOI_EXIT_BITMAP2                = 0x00002020,
- *	EOI_EXIT_BITMAP3                = 0x00002022,
- *	GUEST_PML_INDEX			= 0x00000812,
- *	PML_ADDRESS			= 0x0000200e,
- *	VM_FUNCTION_CONTROL             = 0x00002018,
- *	EPTP_LIST_ADDRESS               = 0x00002024,
- *	VMREAD_BITMAP                   = 0x00002026,
- *	VMWRITE_BITMAP                  = 0x00002028,
- *
- *	TSC_MULTIPLIER                  = 0x00002032,
- *	PLE_GAP                         = 0x00004020,
- *	PLE_WINDOW                      = 0x00004022,
- *	VMX_PREEMPTION_TIMER_VALUE      = 0x0000482E,
- *      GUEST_IA32_PERF_GLOBAL_CTRL     = 0x00002808,
- *      HOST_IA32_PERF_GLOBAL_CTRL      = 0x00002c04,
- *
- * Currently unsupported in KVM:
- *	GUEST_IA32_RTIT_CTL		= 0x00002814,
- */
-#define EVMCS1_UNSUPPORTED_PINCTRL (PIN_BASED_POSTED_INTR | \
-				    PIN_BASED_VMX_PREEMPTION_TIMER)
-#define EVMCS1_UNSUPPORTED_2NDEXEC					\
-	(SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |				\
-	 SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |			\
-	 SECONDARY_EXEC_APIC_REGISTER_VIRT |				\
-	 SECONDARY_EXEC_ENABLE_PML |					\
-	 SECONDARY_EXEC_ENABLE_VMFUNC |					\
-	 SECONDARY_EXEC_SHADOW_VMCS |					\
-	 SECONDARY_EXEC_TSC_SCALING |					\
-	 SECONDARY_EXEC_PAUSE_LOOP_EXITING)
-#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
-#define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
-#define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING)
-
-#if IS_ENABLED(CONFIG_HYPERV)
-static bool __read_mostly enlightened_vmcs = true;
-module_param(enlightened_vmcs, bool, 0444);
-
-static inline void evmcs_write64(unsigned long field, u64 value)
-{
-	u16 clean_field;
-	int offset = get_evmcs_offset(field, &clean_field);
-
-	if (offset < 0)
-		return;
-
-	*(u64 *)((char *)current_evmcs + offset) = value;
-
-	current_evmcs->hv_clean_fields &= ~clean_field;
-}
-
-static inline void evmcs_write32(unsigned long field, u32 value)
-{
-	u16 clean_field;
-	int offset = get_evmcs_offset(field, &clean_field);
-
-	if (offset < 0)
-		return;
-
-	*(u32 *)((char *)current_evmcs + offset) = value;
-	current_evmcs->hv_clean_fields &= ~clean_field;
-}
-
-static inline void evmcs_write16(unsigned long field, u16 value)
-{
-	u16 clean_field;
-	int offset = get_evmcs_offset(field, &clean_field);
-
-	if (offset < 0)
-		return;
-
-	*(u16 *)((char *)current_evmcs + offset) = value;
-	current_evmcs->hv_clean_fields &= ~clean_field;
-}
-
-static inline u64 evmcs_read64(unsigned long field)
-{
-	int offset = get_evmcs_offset(field, NULL);
-
-	if (offset < 0)
-		return 0;
-
-	return *(u64 *)((char *)current_evmcs + offset);
-}
-
-static inline u32 evmcs_read32(unsigned long field)
-{
-	int offset = get_evmcs_offset(field, NULL);
-
-	if (offset < 0)
-		return 0;
-
-	return *(u32 *)((char *)current_evmcs + offset);
-}
-
-static inline u16 evmcs_read16(unsigned long field)
-{
-	int offset = get_evmcs_offset(field, NULL);
-
-	if (offset < 0)
-		return 0;
-
-	return *(u16 *)((char *)current_evmcs + offset);
-}
-
-static inline void evmcs_touch_msr_bitmap(void)
-{
-	if (unlikely(!current_evmcs))
-		return;
-
-	if (current_evmcs->hv_enlightenments_control.msr_bitmap)
-		current_evmcs->hv_clean_fields &=
-			~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
-}
-
-static void evmcs_load(u64 phys_addr)
-{
-	struct hv_vp_assist_page *vp_ap =
-		hv_get_vp_assist_page(smp_processor_id());
-
-	vp_ap->current_nested_vmcs = phys_addr;
-	vp_ap->enlighten_vmentry = 1;
-}
-
-static void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)
-{
-	vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;
-	vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
-
-	vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
-	vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
-
-}
-
-/* check_ept_pointer() should be under protection of ept_pointer_lock. */
-static void check_ept_pointer_match(struct kvm *kvm)
-{
-	struct kvm_vcpu *vcpu;
-	u64 tmp_eptp = INVALID_PAGE;
-	int i;
-
-	kvm_for_each_vcpu(i, vcpu, kvm) {
-		if (!VALID_PAGE(tmp_eptp)) {
-			tmp_eptp = to_vmx(vcpu)->ept_pointer;
-		} else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
-			to_kvm_vmx(kvm)->ept_pointers_match
-				= EPT_POINTERS_MISMATCH;
-			return;
-		}
-	}
-
-	to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
-}
-
-static int vmx_hv_remote_flush_tlb(struct kvm *kvm)
-{
-	struct kvm_vcpu *vcpu;
-	int ret = -ENOTSUPP, i;
-
-	spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
-
-	if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
-		check_ept_pointer_match(kvm);
-
-	/*
-	 * FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE hypercall needs the address of the
-	 * base of EPT PML4 table, strip off EPT configuration information.
-	 */
-	if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
-		kvm_for_each_vcpu(i, vcpu, kvm)
-			ret |= hyperv_flush_guest_mapping(
-				to_vmx(kvm_get_vcpu(kvm, i))->ept_pointer & PAGE_MASK);
-	} else {
-		ret = hyperv_flush_guest_mapping(
-				to_vmx(kvm_get_vcpu(kvm, 0))->ept_pointer & PAGE_MASK);
-	}
-
-	spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
-	return ret;
-}
-#else /* !IS_ENABLED(CONFIG_HYPERV) */
-static inline void evmcs_write64(unsigned long field, u64 value) {}
-static inline void evmcs_write32(unsigned long field, u32 value) {}
-static inline void evmcs_write16(unsigned long field, u16 value) {}
-static inline u64 evmcs_read64(unsigned long field) { return 0; }
-static inline u32 evmcs_read32(unsigned long field) { return 0; }
-static inline u16 evmcs_read16(unsigned long field) { return 0; }
-static inline void evmcs_load(u64 phys_addr) {}
-static inline void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf) {}
-static inline void evmcs_touch_msr_bitmap(void) {}
-#endif /* IS_ENABLED(CONFIG_HYPERV) */
-
-static int nested_enable_evmcs(struct kvm_vcpu *vcpu,
-			       uint16_t *vmcs_version)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * vmcs_version represents the range of supported Enlightened VMCS
-	 * versions: lower 8 bits is the minimal version, higher 8 bits is the
-	 * maximum supported version. KVM supports versions from 1 to
-	 * KVM_EVMCS_VERSION.
-	 */
-	if (vmcs_version)
-		*vmcs_version = (KVM_EVMCS_VERSION << 8) | 1;
-
-	/* We don't support disabling the feature for simplicity. */
-	if (vmx->nested.enlightened_vmcs_enabled)
-		return 0;
-
-	vmx->nested.enlightened_vmcs_enabled = true;
-
-	vmx->nested.msrs.pinbased_ctls_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;
-	vmx->nested.msrs.entry_ctls_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
-	vmx->nested.msrs.exit_ctls_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
-	vmx->nested.msrs.secondary_ctls_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
-	vmx->nested.msrs.vmfunc_controls &= ~EVMCS1_UNSUPPORTED_VMFUNC;
-
-	return 0;
-}
-
-static inline bool is_exception_n(u32 intr_info, u8 vector)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
-			     INTR_INFO_VALID_MASK)) ==
-		(INTR_TYPE_HARD_EXCEPTION | vector | INTR_INFO_VALID_MASK);
-}
-
-static inline bool is_debug(u32 intr_info)
-{
-	return is_exception_n(intr_info, DB_VECTOR);
-}
-
-static inline bool is_breakpoint(u32 intr_info)
-{
-	return is_exception_n(intr_info, BP_VECTOR);
-}
-
-static inline bool is_page_fault(u32 intr_info)
-{
-	return is_exception_n(intr_info, PF_VECTOR);
-}
-
-static inline bool is_invalid_opcode(u32 intr_info)
-{
-	return is_exception_n(intr_info, UD_VECTOR);
-}
-
-static inline bool is_gp_fault(u32 intr_info)
-{
-	return is_exception_n(intr_info, GP_VECTOR);
-}
-
-static inline bool is_machine_check(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
-			     INTR_INFO_VALID_MASK)) ==
-		(INTR_TYPE_HARD_EXCEPTION | MC_VECTOR | INTR_INFO_VALID_MASK);
-}
-
-/* Undocumented: icebp/int1 */
-static inline bool is_icebp(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
-		== (INTR_TYPE_PRIV_SW_EXCEPTION | INTR_INFO_VALID_MASK);
-}
-
-static inline bool cpu_has_vmx_msr_bitmap(void)
-{
-	return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS;
-}
-
-static inline bool cpu_has_vmx_tpr_shadow(void)
-{
-	return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW;
-}
-
-static inline bool cpu_need_tpr_shadow(struct kvm_vcpu *vcpu)
-{
-	return cpu_has_vmx_tpr_shadow() && lapic_in_kernel(vcpu);
-}
-
-static inline bool cpu_has_secondary_exec_ctrls(void)
-{
-	return vmcs_config.cpu_based_exec_ctrl &
-		CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
-}
-
-static inline bool cpu_has_vmx_virtualize_apic_accesses(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-}
-
-static inline bool cpu_has_vmx_virtualize_x2apic_mode(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
-}
-
-static inline bool cpu_has_vmx_apic_register_virt(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_APIC_REGISTER_VIRT;
-}
-
-static inline bool cpu_has_vmx_virtual_intr_delivery(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY;
-}
-
-static inline bool cpu_has_vmx_encls_vmexit(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_ENCLS_EXITING;
-}
-
-/*
- * Comment's format: document - errata name - stepping - processor name.
- * Refer from
- * https://www.virtualbox.org/svn/vbox/trunk/src/VBox/VMM/VMMR0/HMR0.cpp
- */
-static u32 vmx_preemption_cpu_tfms[] = {
-/* 323344.pdf - BA86   - D0 - Xeon 7500 Series */
-0x000206E6,
-/* 323056.pdf - AAX65  - C2 - Xeon L3406 */
-/* 322814.pdf - AAT59  - C2 - i7-600, i5-500, i5-400 and i3-300 Mobile */
-/* 322911.pdf - AAU65  - C2 - i5-600, i3-500 Desktop and Pentium G6950 */
-0x00020652,
-/* 322911.pdf - AAU65  - K0 - i5-600, i3-500 Desktop and Pentium G6950 */
-0x00020655,
-/* 322373.pdf - AAO95  - B1 - Xeon 3400 Series */
-/* 322166.pdf - AAN92  - B1 - i7-800 and i5-700 Desktop */
-/*
- * 320767.pdf - AAP86  - B1 -
- * i7-900 Mobile Extreme, i7-800 and i7-700 Mobile
- */
-0x000106E5,
-/* 321333.pdf - AAM126 - C0 - Xeon 3500 */
-0x000106A0,
-/* 321333.pdf - AAM126 - C1 - Xeon 3500 */
-0x000106A1,
-/* 320836.pdf - AAJ124 - C0 - i7-900 Desktop Extreme and i7-900 Desktop */
-0x000106A4,
- /* 321333.pdf - AAM126 - D0 - Xeon 3500 */
- /* 321324.pdf - AAK139 - D0 - Xeon 5500 */
- /* 320836.pdf - AAJ124 - D0 - i7-900 Extreme and i7-900 Desktop */
-0x000106A5,
-};
-
-static inline bool cpu_has_broken_vmx_preemption_timer(void)
-{
-	u32 eax = cpuid_eax(0x00000001), i;
-
-	/* Clear the reserved bits */
-	eax &= ~(0x3U << 14 | 0xfU << 28);
-	for (i = 0; i < ARRAY_SIZE(vmx_preemption_cpu_tfms); i++)
-		if (eax == vmx_preemption_cpu_tfms[i])
-			return true;
-
-	return false;
-}
-
-static inline bool cpu_has_vmx_preemption_timer(void)
-{
-	return vmcs_config.pin_based_exec_ctrl &
-		PIN_BASED_VMX_PREEMPTION_TIMER;
-}
-
-static inline bool cpu_has_vmx_posted_intr(void)
-{
-	return IS_ENABLED(CONFIG_X86_LOCAL_APIC) &&
-		vmcs_config.pin_based_exec_ctrl & PIN_BASED_POSTED_INTR;
-}
-
-static inline bool cpu_has_vmx_apicv(void)
-{
-	return cpu_has_vmx_apic_register_virt() &&
-		cpu_has_vmx_virtual_intr_delivery() &&
-		cpu_has_vmx_posted_intr();
-}
-
-static inline bool cpu_has_vmx_flexpriority(void)
-{
-	return cpu_has_vmx_tpr_shadow() &&
-		cpu_has_vmx_virtualize_apic_accesses();
-}
-
-static inline bool cpu_has_vmx_ept_execute_only(void)
-{
-	return vmx_capability.ept & VMX_EPT_EXECUTE_ONLY_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_2m_page(void)
-{
-	return vmx_capability.ept & VMX_EPT_2MB_PAGE_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_1g_page(void)
-{
-	return vmx_capability.ept & VMX_EPT_1GB_PAGE_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_4levels(void)
-{
-	return vmx_capability.ept & VMX_EPT_PAGE_WALK_4_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_mt_wb(void)
-{
-	return vmx_capability.ept & VMX_EPTP_WB_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_5levels(void)
-{
-	return vmx_capability.ept & VMX_EPT_PAGE_WALK_5_BIT;
-}
-
-static inline bool cpu_has_vmx_ept_ad_bits(void)
-{
-	return vmx_capability.ept & VMX_EPT_AD_BIT;
-}
-
-static inline bool cpu_has_vmx_invept_context(void)
-{
-	return vmx_capability.ept & VMX_EPT_EXTENT_CONTEXT_BIT;
-}
-
-static inline bool cpu_has_vmx_invept_global(void)
-{
-	return vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT;
-}
-
-static inline bool cpu_has_vmx_invvpid_individual_addr(void)
-{
-	return vmx_capability.vpid & VMX_VPID_EXTENT_INDIVIDUAL_ADDR_BIT;
-}
-
-static inline bool cpu_has_vmx_invvpid_single(void)
-{
-	return vmx_capability.vpid & VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT;
-}
-
-static inline bool cpu_has_vmx_invvpid_global(void)
-{
-	return vmx_capability.vpid & VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT;
-}
-
-static inline bool cpu_has_vmx_invvpid(void)
-{
-	return vmx_capability.vpid & VMX_VPID_INVVPID_BIT;
-}
-
-static inline bool cpu_has_vmx_ept(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_ENABLE_EPT;
-}
-
-static inline bool cpu_has_vmx_unrestricted_guest(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_UNRESTRICTED_GUEST;
-}
-
-static inline bool cpu_has_vmx_ple(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_PAUSE_LOOP_EXITING;
-}
-
-static inline bool cpu_has_vmx_basic_inout(void)
-{
-	return	(((u64)vmcs_config.basic_cap << 32) & VMX_BASIC_INOUT);
-}
-
-static inline bool cpu_need_virtualize_apic_accesses(struct kvm_vcpu *vcpu)
-{
-	return flexpriority_enabled && lapic_in_kernel(vcpu);
-}
-
-static inline bool cpu_has_vmx_vpid(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_ENABLE_VPID;
-}
-
-static inline bool cpu_has_vmx_rdtscp(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_RDTSCP;
-}
-
-static inline bool cpu_has_vmx_invpcid(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_ENABLE_INVPCID;
-}
-
-static inline bool cpu_has_virtual_nmis(void)
-{
-	return vmcs_config.pin_based_exec_ctrl & PIN_BASED_VIRTUAL_NMIS;
-}
-
-static inline bool cpu_has_vmx_wbinvd_exit(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_WBINVD_EXITING;
-}
-
-static inline bool cpu_has_vmx_shadow_vmcs(void)
-{
-	u64 vmx_msr;
-	rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
-	/* check if the cpu supports writing r/o exit information fields */
-	if (!(vmx_msr & MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS))
-		return false;
-
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_SHADOW_VMCS;
-}
-
-static inline bool cpu_has_vmx_pml(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl & SECONDARY_EXEC_ENABLE_PML;
-}
-
-static inline bool cpu_has_vmx_tsc_scaling(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_TSC_SCALING;
-}
-
-static inline bool cpu_has_vmx_vmfunc(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_ENABLE_VMFUNC;
-}
-
-static bool vmx_umip_emulated(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_DESC;
-}
-
-static inline bool report_flexpriority(void)
-{
-	return flexpriority_enabled;
-}
-
-static inline unsigned nested_cpu_vmx_misc_cr3_count(struct kvm_vcpu *vcpu)
-{
-	return vmx_misc_cr3_count(to_vmx(vcpu)->nested.msrs.misc_low);
-}
-
-/*
- * Do the virtual VMX capability MSRs specify that L1 can use VMWRITE
- * to modify any valid field of the VMCS, or are the VM-exit
- * information fields read-only?
- */
-static inline bool nested_cpu_has_vmwrite_any_field(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.msrs.misc_low &
-		MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS;
-}
-
-static inline bool nested_cpu_has_zero_length_injection(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.msrs.misc_low & VMX_MISC_ZERO_LEN_INS;
-}
-
-static inline bool nested_cpu_supports_monitor_trap_flag(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.msrs.procbased_ctls_high &
-			CPU_BASED_MONITOR_TRAP_FLAG;
-}
-
-static inline bool nested_cpu_has_vmx_shadow_vmcs(struct kvm_vcpu *vcpu)
-{
-	return to_vmx(vcpu)->nested.msrs.secondary_ctls_high &
-		SECONDARY_EXEC_SHADOW_VMCS;
-}
-
-static inline bool nested_cpu_has(struct vmcs12 *vmcs12, u32 bit)
-{
-	return vmcs12->cpu_based_vm_exec_control & bit;
-}
-
-static inline bool nested_cpu_has2(struct vmcs12 *vmcs12, u32 bit)
-{
-	return (vmcs12->cpu_based_vm_exec_control &
-			CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) &&
-		(vmcs12->secondary_vm_exec_control & bit);
-}
-
-static inline bool nested_cpu_has_preemption_timer(struct vmcs12 *vmcs12)
-{
-	return vmcs12->pin_based_vm_exec_control &
-		PIN_BASED_VMX_PREEMPTION_TIMER;
-}
-
-static inline bool nested_cpu_has_nmi_exiting(struct vmcs12 *vmcs12)
-{
-	return vmcs12->pin_based_vm_exec_control & PIN_BASED_NMI_EXITING;
-}
-
-static inline bool nested_cpu_has_virtual_nmis(struct vmcs12 *vmcs12)
-{
-	return vmcs12->pin_based_vm_exec_control & PIN_BASED_VIRTUAL_NMIS;
-}
-
-static inline int nested_cpu_has_ept(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_EPT);
-}
-
-static inline bool nested_cpu_has_xsaves(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_XSAVES);
-}
-
-static inline bool nested_cpu_has_pml(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_PML);
-}
-
-static inline bool nested_cpu_has_virt_x2apic_mode(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE);
-}
-
-static inline bool nested_cpu_has_vpid(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_VPID);
-}
-
-static inline bool nested_cpu_has_apic_reg_virt(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_APIC_REGISTER_VIRT);
-}
-
-static inline bool nested_cpu_has_vid(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-}
-
-static inline bool nested_cpu_has_posted_intr(struct vmcs12 *vmcs12)
-{
-	return vmcs12->pin_based_vm_exec_control & PIN_BASED_POSTED_INTR;
-}
-
-static inline bool nested_cpu_has_vmfunc(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_VMFUNC);
-}
-
-static inline bool nested_cpu_has_eptp_switching(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has_vmfunc(vmcs12) &&
-		(vmcs12->vm_function_control &
-		 VMX_VMFUNC_EPTP_SWITCHING);
-}
-
-static inline bool nested_cpu_has_shadow_vmcs(struct vmcs12 *vmcs12)
-{
-	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_SHADOW_VMCS);
-}
-
-static inline bool is_nmi(u32 intr_info)
-{
-	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
-		== (INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK);
-}
-
-static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
-			      u32 exit_intr_info,
-			      unsigned long exit_qualification);
-
-static int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
-{
-	int i;
-
-	for (i = 0; i < vmx->nmsrs; ++i)
-		if (vmx_msr_index[vmx->guest_msrs[i].index] == msr)
-			return i;
-	return -1;
-}
-
-static inline void __invvpid(unsigned long ext, u16 vpid, gva_t gva)
-{
-    struct {
-	u64 vpid : 16;
-	u64 rsvd : 48;
-	u64 gva;
-    } operand = { vpid, 0, gva };
-    bool error;
-
-    asm volatile (__ex("invvpid %2, %1") CC_SET(na)
-		  : CC_OUT(na) (error) : "r"(ext), "m"(operand));
-    BUG_ON(error);
-}
-
-static inline void __invept(unsigned long ext, u64 eptp, gpa_t gpa)
-{
-	struct {
-		u64 eptp, gpa;
-	} operand = {eptp, gpa};
-	bool error;
-
-	asm volatile (__ex("invept %2, %1") CC_SET(na)
-		      : CC_OUT(na) (error) : "r"(ext), "m"(operand));
-	BUG_ON(error);
-}
-
-static struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
-{
-	int i;
-
-	i = __find_msr_index(vmx, msr);
-	if (i >= 0)
-		return &vmx->guest_msrs[i];
-	return NULL;
-}
-
-static void vmcs_clear(struct vmcs *vmcs)
-{
-	u64 phys_addr = __pa(vmcs);
-	bool error;
-
-	asm volatile (__ex("vmclear %1") CC_SET(na)
-		      : CC_OUT(na) (error) : "m"(phys_addr));
-	if (unlikely(error))
-		printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
-		       vmcs, phys_addr);
-}
-
-static inline void loaded_vmcs_init(struct loaded_vmcs *loaded_vmcs)
-{
-	vmcs_clear(loaded_vmcs->vmcs);
-	if (loaded_vmcs->shadow_vmcs && loaded_vmcs->launched)
-		vmcs_clear(loaded_vmcs->shadow_vmcs);
-	loaded_vmcs->cpu = -1;
-	loaded_vmcs->launched = 0;
-}
-
-static void vmcs_load(struct vmcs *vmcs)
-{
-	u64 phys_addr = __pa(vmcs);
-	bool error;
-
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_load(phys_addr);
-
-	asm volatile (__ex("vmptrld %1") CC_SET(na)
-		      : CC_OUT(na) (error) : "m"(phys_addr));
-	if (unlikely(error))
-		printk(KERN_ERR "kvm: vmptrld %p/%llx failed\n",
-		       vmcs, phys_addr);
-}
-
-#ifdef CONFIG_KEXEC_CORE
-/*
- * This bitmap is used to indicate whether the vmclear
- * operation is enabled on all cpus. All disabled by
- * default.
- */
-static cpumask_t crash_vmclear_enabled_bitmap = CPU_MASK_NONE;
-
-static inline void crash_enable_local_vmclear(int cpu)
-{
-	cpumask_set_cpu(cpu, &crash_vmclear_enabled_bitmap);
-}
-
-static inline void crash_disable_local_vmclear(int cpu)
-{
-	cpumask_clear_cpu(cpu, &crash_vmclear_enabled_bitmap);
-}
-
-static inline int crash_local_vmclear_enabled(int cpu)
-{
-	return cpumask_test_cpu(cpu, &crash_vmclear_enabled_bitmap);
-}
-
-static void crash_vmclear_local_loaded_vmcss(void)
-{
-	int cpu = raw_smp_processor_id();
-	struct loaded_vmcs *v;
-
-	if (!crash_local_vmclear_enabled(cpu))
-		return;
-
-	list_for_each_entry(v, &per_cpu(loaded_vmcss_on_cpu, cpu),
-			    loaded_vmcss_on_cpu_link)
-		vmcs_clear(v->vmcs);
-}
-#else
-static inline void crash_enable_local_vmclear(int cpu) { }
-static inline void crash_disable_local_vmclear(int cpu) { }
-#endif /* CONFIG_KEXEC_CORE */
-
-static void __loaded_vmcs_clear(void *arg)
-{
-	struct loaded_vmcs *loaded_vmcs = arg;
-	int cpu = raw_smp_processor_id();
-
-	if (loaded_vmcs->cpu != cpu)
-		return; /* vcpu migration can race with cpu offline */
-	if (per_cpu(current_vmcs, cpu) == loaded_vmcs->vmcs)
-		per_cpu(current_vmcs, cpu) = NULL;
-	crash_disable_local_vmclear(cpu);
-	list_del(&loaded_vmcs->loaded_vmcss_on_cpu_link);
-
-	/*
-	 * we should ensure updating loaded_vmcs->loaded_vmcss_on_cpu_link
-	 * is before setting loaded_vmcs->vcpu to -1 which is done in
-	 * loaded_vmcs_init. Otherwise, other cpu can see vcpu = -1 fist
-	 * then adds the vmcs into percpu list before it is deleted.
-	 */
-	smp_wmb();
-
-	loaded_vmcs_init(loaded_vmcs);
-	crash_enable_local_vmclear(cpu);
-}
-
-static void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs)
-{
-	int cpu = loaded_vmcs->cpu;
-
-	if (cpu != -1)
-		smp_call_function_single(cpu,
-			 __loaded_vmcs_clear, loaded_vmcs, 1);
-}
-
-static inline bool vpid_sync_vcpu_addr(int vpid, gva_t addr)
-{
-	if (vpid == 0)
-		return true;
-
-	if (cpu_has_vmx_invvpid_individual_addr()) {
-		__invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR, vpid, addr);
-		return true;
-	}
-
-	return false;
-}
-
-static inline void vpid_sync_vcpu_single(int vpid)
-{
-	if (vpid == 0)
-		return;
-
-	if (cpu_has_vmx_invvpid_single())
-		__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vpid, 0);
-}
-
-static inline void vpid_sync_vcpu_global(void)
-{
-	if (cpu_has_vmx_invvpid_global())
-		__invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0);
-}
-
-static inline void vpid_sync_context(int vpid)
-{
-	if (cpu_has_vmx_invvpid_single())
-		vpid_sync_vcpu_single(vpid);
-	else
-		vpid_sync_vcpu_global();
-}
-
-static inline void ept_sync_global(void)
-{
-	__invept(VMX_EPT_EXTENT_GLOBAL, 0, 0);
-}
-
-static inline void ept_sync_context(u64 eptp)
-{
-	if (cpu_has_vmx_invept_context())
-		__invept(VMX_EPT_EXTENT_CONTEXT, eptp, 0);
-	else
-		ept_sync_global();
-}
-
-static __always_inline void vmcs_check16(unsigned long field)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
-			 "16-bit accessor invalid for 64-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
-			 "16-bit accessor invalid for 64-bit high field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
-			 "16-bit accessor invalid for 32-bit high field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
-			 "16-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_check32(unsigned long field)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
-			 "32-bit accessor invalid for 16-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
-			 "32-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_check64(unsigned long field)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
-			 "64-bit accessor invalid for 16-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
-			 "64-bit accessor invalid for 64-bit high field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
-			 "64-bit accessor invalid for 32-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
-			 "64-bit accessor invalid for natural width field");
-}
-
-static __always_inline void vmcs_checkl(unsigned long field)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
-			 "Natural width accessor invalid for 16-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
-			 "Natural width accessor invalid for 64-bit field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
-			 "Natural width accessor invalid for 64-bit high field");
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
-			 "Natural width accessor invalid for 32-bit field");
-}
-
-static __always_inline unsigned long __vmcs_readl(unsigned long field)
-{
-	unsigned long value;
-
-	asm volatile (__ex_clear("vmread %1, %0", "%k0")
-		      : "=r"(value) : "r"(field));
-	return value;
-}
-
-static __always_inline u16 vmcs_read16(unsigned long field)
-{
-	vmcs_check16(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_read16(field);
-	return __vmcs_readl(field);
-}
-
-static __always_inline u32 vmcs_read32(unsigned long field)
-{
-	vmcs_check32(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_read32(field);
-	return __vmcs_readl(field);
-}
-
-static __always_inline u64 vmcs_read64(unsigned long field)
-{
-	vmcs_check64(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_read64(field);
-#ifdef CONFIG_X86_64
-	return __vmcs_readl(field);
-#else
-	return __vmcs_readl(field) | ((u64)__vmcs_readl(field+1) << 32);
-#endif
-}
-
-static __always_inline unsigned long vmcs_readl(unsigned long field)
-{
-	vmcs_checkl(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_read64(field);
-	return __vmcs_readl(field);
-}
-
-static noinline void vmwrite_error(unsigned long field, unsigned long value)
-{
-	printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n",
-	       field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
-	dump_stack();
-}
-
-static __always_inline void __vmcs_writel(unsigned long field, unsigned long value)
-{
-	bool error;
-
-	asm volatile (__ex("vmwrite %2, %1") CC_SET(na)
-		      : CC_OUT(na) (error) : "r"(field), "rm"(value));
-	if (unlikely(error))
-		vmwrite_error(field, value);
-}
-
-static __always_inline void vmcs_write16(unsigned long field, u16 value)
-{
-	vmcs_check16(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write16(field, value);
-
-	__vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_write32(unsigned long field, u32 value)
-{
-	vmcs_check32(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write32(field, value);
-
-	__vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_write64(unsigned long field, u64 value)
-{
-	vmcs_check64(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write64(field, value);
-
-	__vmcs_writel(field, value);
-#ifndef CONFIG_X86_64
-	asm volatile ("");
-	__vmcs_writel(field+1, value >> 32);
-#endif
-}
-
-static __always_inline void vmcs_writel(unsigned long field, unsigned long value)
-{
-	vmcs_checkl(field);
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write64(field, value);
-
-	__vmcs_writel(field, value);
-}
-
-static __always_inline void vmcs_clear_bits(unsigned long field, u32 mask)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
-			 "vmcs_clear_bits does not support 64-bit fields");
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write32(field, evmcs_read32(field) & ~mask);
-
-	__vmcs_writel(field, __vmcs_readl(field) & ~mask);
-}
-
-static __always_inline void vmcs_set_bits(unsigned long field, u32 mask)
-{
-        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
-			 "vmcs_set_bits does not support 64-bit fields");
-	if (static_branch_unlikely(&enable_evmcs))
-		return evmcs_write32(field, evmcs_read32(field) | mask);
-
-	__vmcs_writel(field, __vmcs_readl(field) | mask);
-}
-
-static inline void vm_entry_controls_reset_shadow(struct vcpu_vmx *vmx)
-{
-	vmx->vm_entry_controls_shadow = vmcs_read32(VM_ENTRY_CONTROLS);
-}
-
-static inline void vm_entry_controls_init(struct vcpu_vmx *vmx, u32 val)
-{
-	vmcs_write32(VM_ENTRY_CONTROLS, val);
-	vmx->vm_entry_controls_shadow = val;
-}
-
-static inline void vm_entry_controls_set(struct vcpu_vmx *vmx, u32 val)
-{
-	if (vmx->vm_entry_controls_shadow != val)
-		vm_entry_controls_init(vmx, val);
-}
-
-static inline u32 vm_entry_controls_get(struct vcpu_vmx *vmx)
-{
-	return vmx->vm_entry_controls_shadow;
-}
-
-
-static inline void vm_entry_controls_setbit(struct vcpu_vmx *vmx, u32 val)
-{
-	vm_entry_controls_set(vmx, vm_entry_controls_get(vmx) | val);
-}
-
-static inline void vm_entry_controls_clearbit(struct vcpu_vmx *vmx, u32 val)
-{
-	vm_entry_controls_set(vmx, vm_entry_controls_get(vmx) & ~val);
-}
-
-static inline void vm_exit_controls_reset_shadow(struct vcpu_vmx *vmx)
-{
-	vmx->vm_exit_controls_shadow = vmcs_read32(VM_EXIT_CONTROLS);
-}
-
-static inline void vm_exit_controls_init(struct vcpu_vmx *vmx, u32 val)
-{
-	vmcs_write32(VM_EXIT_CONTROLS, val);
-	vmx->vm_exit_controls_shadow = val;
-}
-
-static inline void vm_exit_controls_set(struct vcpu_vmx *vmx, u32 val)
-{
-	if (vmx->vm_exit_controls_shadow != val)
-		vm_exit_controls_init(vmx, val);
-}
-
-static inline u32 vm_exit_controls_get(struct vcpu_vmx *vmx)
-{
-	return vmx->vm_exit_controls_shadow;
-}
-
-
-static inline void vm_exit_controls_setbit(struct vcpu_vmx *vmx, u32 val)
-{
-	vm_exit_controls_set(vmx, vm_exit_controls_get(vmx) | val);
-}
-
-static inline void vm_exit_controls_clearbit(struct vcpu_vmx *vmx, u32 val)
-{
-	vm_exit_controls_set(vmx, vm_exit_controls_get(vmx) & ~val);
-}
-
-static void vmx_segment_cache_clear(struct vcpu_vmx *vmx)
-{
-	vmx->segment_cache.bitmask = 0;
-}
-
-static bool vmx_segment_cache_test_set(struct vcpu_vmx *vmx, unsigned seg,
-				       unsigned field)
-{
-	bool ret;
-	u32 mask = 1 << (seg * SEG_FIELD_NR + field);
-
-	if (!(vmx->vcpu.arch.regs_avail & (1 << VCPU_EXREG_SEGMENTS))) {
-		vmx->vcpu.arch.regs_avail |= (1 << VCPU_EXREG_SEGMENTS);
-		vmx->segment_cache.bitmask = 0;
-	}
-	ret = vmx->segment_cache.bitmask & mask;
-	vmx->segment_cache.bitmask |= mask;
-	return ret;
-}
-
-static u16 vmx_read_guest_seg_selector(struct vcpu_vmx *vmx, unsigned seg)
-{
-	u16 *p = &vmx->segment_cache.seg[seg].selector;
-
-	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_SEL))
-		*p = vmcs_read16(kvm_vmx_segment_fields[seg].selector);
-	return *p;
-}
-
-static ulong vmx_read_guest_seg_base(struct vcpu_vmx *vmx, unsigned seg)
-{
-	ulong *p = &vmx->segment_cache.seg[seg].base;
-
-	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_BASE))
-		*p = vmcs_readl(kvm_vmx_segment_fields[seg].base);
-	return *p;
-}
-
-static u32 vmx_read_guest_seg_limit(struct vcpu_vmx *vmx, unsigned seg)
-{
-	u32 *p = &vmx->segment_cache.seg[seg].limit;
-
-	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_LIMIT))
-		*p = vmcs_read32(kvm_vmx_segment_fields[seg].limit);
-	return *p;
-}
-
-static u32 vmx_read_guest_seg_ar(struct vcpu_vmx *vmx, unsigned seg)
-{
-	u32 *p = &vmx->segment_cache.seg[seg].ar;
-
-	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_AR))
-		*p = vmcs_read32(kvm_vmx_segment_fields[seg].ar_bytes);
-	return *p;
-}
-
-static void update_exception_bitmap(struct kvm_vcpu *vcpu)
-{
-	u32 eb;
-
-	eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) |
-	     (1u << DB_VECTOR) | (1u << AC_VECTOR);
-	/*
-	 * Guest access to VMware backdoor ports could legitimately
-	 * trigger #GP because of TSS I/O permission bitmap.
-	 * We intercept those #GP and allow access to them anyway
-	 * as VMware does.
-	 */
-	if (enable_vmware_backdoor)
-		eb |= (1u << GP_VECTOR);
-	if ((vcpu->guest_debug &
-	     (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) ==
-	    (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP))
-		eb |= 1u << BP_VECTOR;
-	if (to_vmx(vcpu)->rmode.vm86_active)
-		eb = ~0;
-	if (enable_ept)
-		eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
-
-	/* When we are running a nested L2 guest and L1 specified for it a
-	 * certain exception bitmap, we must trap the same exceptions and pass
-	 * them to L1. When running L2, we will only handle the exceptions
-	 * specified above if L1 did not want them.
-	 */
-	if (is_guest_mode(vcpu))
-		eb |= get_vmcs12(vcpu)->exception_bitmap;
-
-	vmcs_write32(EXCEPTION_BITMAP, eb);
-}
-
-/*
- * Check if MSR is intercepted for currently loaded MSR bitmap.
- */
-static bool msr_write_intercepted(struct kvm_vcpu *vcpu, u32 msr)
-{
-	unsigned long *msr_bitmap;
-	int f = sizeof(unsigned long);
-
-	if (!cpu_has_vmx_msr_bitmap())
-		return true;
-
-	msr_bitmap = to_vmx(vcpu)->loaded_vmcs->msr_bitmap;
-
-	if (msr <= 0x1fff) {
-		return !!test_bit(msr, msr_bitmap + 0x800 / f);
-	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
-		msr &= 0x1fff;
-		return !!test_bit(msr, msr_bitmap + 0xc00 / f);
-	}
-
-	return true;
-}
-
-/*
- * Check if MSR is intercepted for L01 MSR bitmap.
- */
-static bool msr_write_intercepted_l01(struct kvm_vcpu *vcpu, u32 msr)
-{
-	unsigned long *msr_bitmap;
-	int f = sizeof(unsigned long);
-
-	if (!cpu_has_vmx_msr_bitmap())
-		return true;
-
-	msr_bitmap = to_vmx(vcpu)->vmcs01.msr_bitmap;
-
-	if (msr <= 0x1fff) {
-		return !!test_bit(msr, msr_bitmap + 0x800 / f);
-	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
-		msr &= 0x1fff;
-		return !!test_bit(msr, msr_bitmap + 0xc00 / f);
-	}
-
-	return true;
-}
-
-static void clear_atomic_switch_msr_special(struct vcpu_vmx *vmx,
-		unsigned long entry, unsigned long exit)
-{
-	vm_entry_controls_clearbit(vmx, entry);
-	vm_exit_controls_clearbit(vmx, exit);
-}
-
-static int find_msr(struct vmx_msrs *m, unsigned int msr)
-{
-	unsigned int i;
-
-	for (i = 0; i < m->nr; ++i) {
-		if (m->val[i].index == msr)
-			return i;
-	}
-	return -ENOENT;
-}
-
-static void clear_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr)
-{
-	int i;
-	struct msr_autoload *m = &vmx->msr_autoload;
-
-	switch (msr) {
-	case MSR_EFER:
-		if (cpu_has_load_ia32_efer) {
-			clear_atomic_switch_msr_special(vmx,
-					VM_ENTRY_LOAD_IA32_EFER,
-					VM_EXIT_LOAD_IA32_EFER);
-			return;
-		}
-		break;
-	case MSR_CORE_PERF_GLOBAL_CTRL:
-		if (cpu_has_load_perf_global_ctrl) {
-			clear_atomic_switch_msr_special(vmx,
-					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
-					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL);
-			return;
-		}
-		break;
-	}
-	i = find_msr(&m->guest, msr);
-	if (i < 0)
-		goto skip_guest;
-	--m->guest.nr;
-	m->guest.val[i] = m->guest.val[m->guest.nr];
-	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
-
-skip_guest:
-	i = find_msr(&m->host, msr);
-	if (i < 0)
-		return;
-
-	--m->host.nr;
-	m->host.val[i] = m->host.val[m->host.nr];
-	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
-}
-
-static void add_atomic_switch_msr_special(struct vcpu_vmx *vmx,
-		unsigned long entry, unsigned long exit,
-		unsigned long guest_val_vmcs, unsigned long host_val_vmcs,
-		u64 guest_val, u64 host_val)
-{
-	vmcs_write64(guest_val_vmcs, guest_val);
-	if (host_val_vmcs != HOST_IA32_EFER)
-		vmcs_write64(host_val_vmcs, host_val);
-	vm_entry_controls_setbit(vmx, entry);
-	vm_exit_controls_setbit(vmx, exit);
-}
-
-static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
-				  u64 guest_val, u64 host_val, bool entry_only)
-{
-	int i, j = 0;
-	struct msr_autoload *m = &vmx->msr_autoload;
-
-	switch (msr) {
-	case MSR_EFER:
-		if (cpu_has_load_ia32_efer) {
-			add_atomic_switch_msr_special(vmx,
-					VM_ENTRY_LOAD_IA32_EFER,
-					VM_EXIT_LOAD_IA32_EFER,
-					GUEST_IA32_EFER,
-					HOST_IA32_EFER,
-					guest_val, host_val);
-			return;
-		}
-		break;
-	case MSR_CORE_PERF_GLOBAL_CTRL:
-		if (cpu_has_load_perf_global_ctrl) {
-			add_atomic_switch_msr_special(vmx,
-					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
-					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL,
-					GUEST_IA32_PERF_GLOBAL_CTRL,
-					HOST_IA32_PERF_GLOBAL_CTRL,
-					guest_val, host_val);
-			return;
-		}
-		break;
-	case MSR_IA32_PEBS_ENABLE:
-		/* PEBS needs a quiescent period after being disabled (to write
-		 * a record).  Disabling PEBS through VMX MSR swapping doesn't
-		 * provide that period, so a CPU could write host's record into
-		 * guest's memory.
-		 */
-		wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
-	}
-
-	i = find_msr(&m->guest, msr);
-	if (!entry_only)
-		j = find_msr(&m->host, msr);
-
-	if (i == NR_AUTOLOAD_MSRS || j == NR_AUTOLOAD_MSRS) {
-		printk_once(KERN_WARNING "Not enough msr switch entries. "
-				"Can't add msr %x\n", msr);
-		return;
-	}
-	if (i < 0) {
-		i = m->guest.nr++;
-		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
-	}
-	m->guest.val[i].index = msr;
-	m->guest.val[i].value = guest_val;
-
-	if (entry_only)
-		return;
-
-	if (j < 0) {
-		j = m->host.nr++;
-		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
-	}
-	m->host.val[j].index = msr;
-	m->host.val[j].value = host_val;
-}
-
-static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
-{
-	u64 guest_efer = vmx->vcpu.arch.efer;
-	u64 ignore_bits = 0;
-
-	if (!enable_ept) {
-		/*
-		 * NX is needed to handle CR0.WP=1, CR4.SMEP=1.  Testing
-		 * host CPUID is more efficient than testing guest CPUID
-		 * or CR4.  Host SMEP is anyway a requirement for guest SMEP.
-		 */
-		if (boot_cpu_has(X86_FEATURE_SMEP))
-			guest_efer |= EFER_NX;
-		else if (!(guest_efer & EFER_NX))
-			ignore_bits |= EFER_NX;
-	}
-
-	/*
-	 * LMA and LME handled by hardware; SCE meaningless outside long mode.
-	 */
-	ignore_bits |= EFER_SCE;
-#ifdef CONFIG_X86_64
-	ignore_bits |= EFER_LMA | EFER_LME;
-	/* SCE is meaningful only in long mode on Intel */
-	if (guest_efer & EFER_LMA)
-		ignore_bits &= ~(u64)EFER_SCE;
-#endif
-
-	/*
-	 * On EPT, we can't emulate NX, so we must switch EFER atomically.
-	 * On CPUs that support "load IA32_EFER", always switch EFER
-	 * atomically, since it's faster than switching it manually.
-	 */
-	if (cpu_has_load_ia32_efer ||
-	    (enable_ept && ((vmx->vcpu.arch.efer ^ host_efer) & EFER_NX))) {
-		if (!(guest_efer & EFER_LMA))
-			guest_efer &= ~EFER_LME;
-		if (guest_efer != host_efer)
-			add_atomic_switch_msr(vmx, MSR_EFER,
-					      guest_efer, host_efer, false);
-		else
-			clear_atomic_switch_msr(vmx, MSR_EFER);
-		return false;
-	} else {
-		clear_atomic_switch_msr(vmx, MSR_EFER);
-
-		guest_efer &= ~ignore_bits;
-		guest_efer |= host_efer & ignore_bits;
-
-		vmx->guest_msrs[efer_offset].data = guest_efer;
-		vmx->guest_msrs[efer_offset].mask = ~ignore_bits;
-
-		return true;
-	}
-}
-
-#ifdef CONFIG_X86_32
-/*
- * On 32-bit kernels, VM exits still load the FS and GS bases from the
- * VMCS rather than the segment table.  KVM uses this helper to figure
- * out the current bases to poke them into the VMCS before entry.
- */
-static unsigned long segment_base(u16 selector)
-{
-	struct desc_struct *table;
-	unsigned long v;
-
-	if (!(selector & ~SEGMENT_RPL_MASK))
-		return 0;
-
-	table = get_current_gdt_ro();
-
-	if ((selector & SEGMENT_TI_MASK) == SEGMENT_LDT) {
-		u16 ldt_selector = kvm_read_ldt();
-
-		if (!(ldt_selector & ~SEGMENT_RPL_MASK))
-			return 0;
-
-		table = (struct desc_struct *)segment_base(ldt_selector);
-	}
-	v = get_desc_base(&table[selector >> 3]);
-	return v;
-}
-#endif
-
-static void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs_host_state *host_state;
-#ifdef CONFIG_X86_64
-	int cpu = raw_smp_processor_id();
-#endif
-	unsigned long fs_base, gs_base;
-	u16 fs_sel, gs_sel;
-	int i;
-
-	vmx->req_immediate_exit = false;
-
-	/*
-	 * Note that guest MSRs to be saved/restored can also be changed
-	 * when guest state is loaded. This happens when guest transitions
-	 * to/from long-mode by setting MSR_EFER.LMA.
-	 */
-	if (!vmx->loaded_cpu_state || vmx->guest_msrs_dirty) {
-		vmx->guest_msrs_dirty = false;
-		for (i = 0; i < vmx->save_nmsrs; ++i)
-			kvm_set_shared_msr(vmx->guest_msrs[i].index,
-					   vmx->guest_msrs[i].data,
-					   vmx->guest_msrs[i].mask);
-
-	}
-
-	if (vmx->loaded_cpu_state)
-		return;
-
-	vmx->loaded_cpu_state = vmx->loaded_vmcs;
-	host_state = &vmx->loaded_cpu_state->host_state;
-
-	/*
-	 * Set host fs and gs selectors.  Unfortunately, 22.2.3 does not
-	 * allow segment selectors with cpl > 0 or ti == 1.
-	 */
-	host_state->ldt_sel = kvm_read_ldt();
-
-#ifdef CONFIG_X86_64
-	savesegment(ds, host_state->ds_sel);
-	savesegment(es, host_state->es_sel);
-
-	gs_base = cpu_kernelmode_gs_base(cpu);
-	if (likely(is_64bit_mm(current->mm))) {
-		save_fsgs_for_kvm();
-		fs_sel = current->thread.fsindex;
-		gs_sel = current->thread.gsindex;
-		fs_base = current->thread.fsbase;
-		vmx->msr_host_kernel_gs_base = current->thread.gsbase;
-	} else {
-		savesegment(fs, fs_sel);
-		savesegment(gs, gs_sel);
-		fs_base = read_msr(MSR_FS_BASE);
-		vmx->msr_host_kernel_gs_base = read_msr(MSR_KERNEL_GS_BASE);
-	}
-
-	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
-#else
-	savesegment(fs, fs_sel);
-	savesegment(gs, gs_sel);
-	fs_base = segment_base(fs_sel);
-	gs_base = segment_base(gs_sel);
-#endif
-
-	if (unlikely(fs_sel != host_state->fs_sel)) {
-		if (!(fs_sel & 7))
-			vmcs_write16(HOST_FS_SELECTOR, fs_sel);
-		else
-			vmcs_write16(HOST_FS_SELECTOR, 0);
-		host_state->fs_sel = fs_sel;
-	}
-	if (unlikely(gs_sel != host_state->gs_sel)) {
-		if (!(gs_sel & 7))
-			vmcs_write16(HOST_GS_SELECTOR, gs_sel);
-		else
-			vmcs_write16(HOST_GS_SELECTOR, 0);
-		host_state->gs_sel = gs_sel;
-	}
-	if (unlikely(fs_base != host_state->fs_base)) {
-		vmcs_writel(HOST_FS_BASE, fs_base);
-		host_state->fs_base = fs_base;
-	}
-	if (unlikely(gs_base != host_state->gs_base)) {
-		vmcs_writel(HOST_GS_BASE, gs_base);
-		host_state->gs_base = gs_base;
-	}
-}
-
-static void vmx_prepare_switch_to_host(struct vcpu_vmx *vmx)
-{
-	struct vmcs_host_state *host_state;
-
-	if (!vmx->loaded_cpu_state)
-		return;
-
-	WARN_ON_ONCE(vmx->loaded_cpu_state != vmx->loaded_vmcs);
-	host_state = &vmx->loaded_cpu_state->host_state;
-
-	++vmx->vcpu.stat.host_state_reload;
-	vmx->loaded_cpu_state = NULL;
-
-#ifdef CONFIG_X86_64
-	rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
-#endif
-	if (host_state->ldt_sel || (host_state->gs_sel & 7)) {
-		kvm_load_ldt(host_state->ldt_sel);
-#ifdef CONFIG_X86_64
-		load_gs_index(host_state->gs_sel);
-#else
-		loadsegment(gs, host_state->gs_sel);
-#endif
-	}
-	if (host_state->fs_sel & 7)
-		loadsegment(fs, host_state->fs_sel);
-#ifdef CONFIG_X86_64
-	if (unlikely(host_state->ds_sel | host_state->es_sel)) {
-		loadsegment(ds, host_state->ds_sel);
-		loadsegment(es, host_state->es_sel);
-	}
-#endif
-	invalidate_tss_limit();
-#ifdef CONFIG_X86_64
-	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_host_kernel_gs_base);
-#endif
-	load_fixmap_gdt(raw_smp_processor_id());
-}
-
-#ifdef CONFIG_X86_64
-static u64 vmx_read_guest_kernel_gs_base(struct vcpu_vmx *vmx)
-{
-	preempt_disable();
-	if (vmx->loaded_cpu_state)
-		rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
-	preempt_enable();
-	return vmx->msr_guest_kernel_gs_base;
-}
-
-static void vmx_write_guest_kernel_gs_base(struct vcpu_vmx *vmx, u64 data)
-{
-	preempt_disable();
-	if (vmx->loaded_cpu_state)
-		wrmsrl(MSR_KERNEL_GS_BASE, data);
-	preempt_enable();
-	vmx->msr_guest_kernel_gs_base = data;
-}
-#endif
-
-static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
-{
-	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
-	struct pi_desc old, new;
-	unsigned int dest;
-
-	/*
-	 * In case of hot-plug or hot-unplug, we may have to undo
-	 * vmx_vcpu_pi_put even if there is no assigned device.  And we
-	 * always keep PI.NDST up to date for simplicity: it makes the
-	 * code easier, and CPU migration is not a fast path.
-	 */
-	if (!pi_test_sn(pi_desc) && vcpu->cpu == cpu)
-		return;
-
-	/*
-	 * First handle the simple case where no cmpxchg is necessary; just
-	 * allow posting non-urgent interrupts.
-	 *
-	 * If the 'nv' field is POSTED_INTR_WAKEUP_VECTOR, do not change
-	 * PI.NDST: pi_post_block will do it for us and the wakeup_handler
-	 * expects the VCPU to be on the blocked_vcpu_list that matches
-	 * PI.NDST.
-	 */
-	if (pi_desc->nv == POSTED_INTR_WAKEUP_VECTOR ||
-	    vcpu->cpu == cpu) {
-		pi_clear_sn(pi_desc);
-		return;
-	}
-
-	/* The full case.  */
-	do {
-		old.control = new.control = pi_desc->control;
-
-		dest = cpu_physical_id(cpu);
-
-		if (x2apic_enabled())
-			new.ndst = dest;
-		else
-			new.ndst = (dest << 8) & 0xFF00;
-
-		new.sn = 0;
-	} while (cmpxchg64(&pi_desc->control, old.control,
-			   new.control) != old.control);
-}
-
-static void decache_tsc_multiplier(struct vcpu_vmx *vmx)
-{
-	vmx->current_tsc_ratio = vmx->vcpu.arch.tsc_scaling_ratio;
-	vmcs_write64(TSC_MULTIPLIER, vmx->current_tsc_ratio);
-}
-
-/*
- * Switches to specified vcpu, until a matching vcpu_put(), but assumes
- * vcpu mutex is already taken.
- */
-static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	bool already_loaded = vmx->loaded_vmcs->cpu == cpu;
-
-	if (!already_loaded) {
-		loaded_vmcs_clear(vmx->loaded_vmcs);
-		local_irq_disable();
-		crash_disable_local_vmclear(cpu);
-
-		/*
-		 * Read loaded_vmcs->cpu should be before fetching
-		 * loaded_vmcs->loaded_vmcss_on_cpu_link.
-		 * See the comments in __loaded_vmcs_clear().
-		 */
-		smp_rmb();
-
-		list_add(&vmx->loaded_vmcs->loaded_vmcss_on_cpu_link,
-			 &per_cpu(loaded_vmcss_on_cpu, cpu));
-		crash_enable_local_vmclear(cpu);
-		local_irq_enable();
-	}
-
-	if (per_cpu(current_vmcs, cpu) != vmx->loaded_vmcs->vmcs) {
-		per_cpu(current_vmcs, cpu) = vmx->loaded_vmcs->vmcs;
-		vmcs_load(vmx->loaded_vmcs->vmcs);
-		indirect_branch_prediction_barrier();
-	}
-
-	if (!already_loaded) {
-		void *gdt = get_current_gdt_ro();
-		unsigned long sysenter_esp;
-
-		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
-
-		/*
-		 * Linux uses per-cpu TSS and GDT, so set these when switching
-		 * processors.  See 22.2.4.
-		 */
-		vmcs_writel(HOST_TR_BASE,
-			    (unsigned long)&get_cpu_entry_area(cpu)->tss.x86_tss);
-		vmcs_writel(HOST_GDTR_BASE, (unsigned long)gdt);   /* 22.2.4 */
-
-		/*
-		 * VM exits change the host TR limit to 0x67 after a VM
-		 * exit.  This is okay, since 0x67 covers everything except
-		 * the IO bitmap and have have code to handle the IO bitmap
-		 * being lost after a VM exit.
-		 */
-		BUILD_BUG_ON(IO_BITMAP_OFFSET - 1 != 0x67);
-
-		rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
-		vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
-
-		vmx->loaded_vmcs->cpu = cpu;
-	}
-
-	/* Setup TSC multiplier */
-	if (kvm_has_tsc_control &&
-	    vmx->current_tsc_ratio != vcpu->arch.tsc_scaling_ratio)
-		decache_tsc_multiplier(vmx);
-
-	vmx_vcpu_pi_load(vcpu, cpu);
-	vmx->host_pkru = read_pkru();
-	vmx->host_debugctlmsr = get_debugctlmsr();
-}
-
-static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
-{
-	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
-
-	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
-		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
-		!kvm_vcpu_apicv_active(vcpu))
-		return;
-
-	/* Set SN when the vCPU is preempted */
-	if (vcpu->preempted)
-		pi_set_sn(pi_desc);
-}
-
-static void vmx_vcpu_put(struct kvm_vcpu *vcpu)
-{
-	vmx_vcpu_pi_put(vcpu);
-
-	vmx_prepare_switch_to_host(to_vmx(vcpu));
-}
-
-static bool emulation_required(struct kvm_vcpu *vcpu)
-{
-	return emulate_invalid_guest_state && !guest_state_valid(vcpu);
-}
-
-static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu);
-
-/*
- * Return the cr0 value that a nested guest would read. This is a combination
- * of the real cr0 used to run the guest (guest_cr0), and the bits shadowed by
- * its hypervisor (cr0_read_shadow).
- */
-static inline unsigned long nested_read_cr0(struct vmcs12 *fields)
-{
-	return (fields->guest_cr0 & ~fields->cr0_guest_host_mask) |
-		(fields->cr0_read_shadow & fields->cr0_guest_host_mask);
-}
-static inline unsigned long nested_read_cr4(struct vmcs12 *fields)
-{
-	return (fields->guest_cr4 & ~fields->cr4_guest_host_mask) |
-		(fields->cr4_read_shadow & fields->cr4_guest_host_mask);
-}
-
-static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
-{
-	unsigned long rflags, save_rflags;
-
-	if (!test_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail)) {
-		__set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail);
-		rflags = vmcs_readl(GUEST_RFLAGS);
-		if (to_vmx(vcpu)->rmode.vm86_active) {
-			rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
-			save_rflags = to_vmx(vcpu)->rmode.save_rflags;
-			rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
-		}
-		to_vmx(vcpu)->rflags = rflags;
-	}
-	return to_vmx(vcpu)->rflags;
-}
-
-static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
-{
-	unsigned long old_rflags = vmx_get_rflags(vcpu);
-
-	__set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail);
-	to_vmx(vcpu)->rflags = rflags;
-	if (to_vmx(vcpu)->rmode.vm86_active) {
-		to_vmx(vcpu)->rmode.save_rflags = rflags;
-		rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
-	}
-	vmcs_writel(GUEST_RFLAGS, rflags);
-
-	if ((old_rflags ^ to_vmx(vcpu)->rflags) & X86_EFLAGS_VM)
-		to_vmx(vcpu)->emulation_required = emulation_required(vcpu);
-}
-
-static u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu)
-{
-	u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
-	int ret = 0;
-
-	if (interruptibility & GUEST_INTR_STATE_STI)
-		ret |= KVM_X86_SHADOW_INT_STI;
-	if (interruptibility & GUEST_INTR_STATE_MOV_SS)
-		ret |= KVM_X86_SHADOW_INT_MOV_SS;
-
-	return ret;
-}
-
-static void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
-{
-	u32 interruptibility_old = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
-	u32 interruptibility = interruptibility_old;
-
-	interruptibility &= ~(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS);
-
-	if (mask & KVM_X86_SHADOW_INT_MOV_SS)
-		interruptibility |= GUEST_INTR_STATE_MOV_SS;
-	else if (mask & KVM_X86_SHADOW_INT_STI)
-		interruptibility |= GUEST_INTR_STATE_STI;
-
-	if ((interruptibility != interruptibility_old))
-		vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, interruptibility);
-}
-
-static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
-{
-	unsigned long rip;
-
-	rip = kvm_rip_read(vcpu);
-	rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
-	kvm_rip_write(vcpu, rip);
-
-	/* skipping an emulated instruction also counts */
-	vmx_set_interrupt_shadow(vcpu, 0);
-}
-
-static void nested_vmx_inject_exception_vmexit(struct kvm_vcpu *vcpu,
-					       unsigned long exit_qual)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	unsigned int nr = vcpu->arch.exception.nr;
-	u32 intr_info = nr | INTR_INFO_VALID_MASK;
-
-	if (vcpu->arch.exception.has_error_code) {
-		vmcs12->vm_exit_intr_error_code = vcpu->arch.exception.error_code;
-		intr_info |= INTR_INFO_DELIVER_CODE_MASK;
-	}
-
-	if (kvm_exception_is_soft(nr))
-		intr_info |= INTR_TYPE_SOFT_EXCEPTION;
-	else
-		intr_info |= INTR_TYPE_HARD_EXCEPTION;
-
-	if (!(vmcs12->idt_vectoring_info_field & VECTORING_INFO_VALID_MASK) &&
-	    vmx_get_nmi_mask(vcpu))
-		intr_info |= INTR_INFO_UNBLOCK_NMI;
-
-	nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI, intr_info, exit_qual);
-}
-
-/*
- * KVM wants to inject page-faults which it got to the guest. This function
- * checks whether in a nested guest, we need to inject them to L1 or L2.
- */
-static int nested_vmx_check_exception(struct kvm_vcpu *vcpu, unsigned long *exit_qual)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	unsigned int nr = vcpu->arch.exception.nr;
-	bool has_payload = vcpu->arch.exception.has_payload;
-	unsigned long payload = vcpu->arch.exception.payload;
-
-	if (nr == PF_VECTOR) {
-		if (vcpu->arch.exception.nested_apf) {
-			*exit_qual = vcpu->arch.apf.nested_apf_token;
-			return 1;
-		}
-		if (nested_vmx_is_page_fault_vmexit(vmcs12,
-						    vcpu->arch.exception.error_code)) {
-			*exit_qual = has_payload ? payload : vcpu->arch.cr2;
-			return 1;
-		}
-	} else if (vmcs12->exception_bitmap & (1u << nr)) {
-		if (nr == DB_VECTOR) {
-			if (!has_payload) {
-				payload = vcpu->arch.dr6;
-				payload &= ~(DR6_FIXED_1 | DR6_BT);
-				payload ^= DR6_RTM;
-			}
-			*exit_qual = payload;
-		} else
-			*exit_qual = 0;
-		return 1;
-	}
-
-	return 0;
-}
-
-static void vmx_clear_hlt(struct kvm_vcpu *vcpu)
-{
-	/*
-	 * Ensure that we clear the HLT state in the VMCS.  We don't need to
-	 * explicitly skip the instruction because if the HLT state is set,
-	 * then the instruction is already executing and RIP has already been
-	 * advanced.
-	 */
-	if (kvm_hlt_in_guest(vcpu->kvm) &&
-			vmcs_read32(GUEST_ACTIVITY_STATE) == GUEST_ACTIVITY_HLT)
-		vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
-}
-
-static void vmx_queue_exception(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned nr = vcpu->arch.exception.nr;
-	bool has_error_code = vcpu->arch.exception.has_error_code;
-	u32 error_code = vcpu->arch.exception.error_code;
-	u32 intr_info = nr | INTR_INFO_VALID_MASK;
-
-	kvm_deliver_exception_payload(vcpu);
-
-	if (has_error_code) {
-		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
-		intr_info |= INTR_INFO_DELIVER_CODE_MASK;
-	}
-
-	if (vmx->rmode.vm86_active) {
-		int inc_eip = 0;
-		if (kvm_exception_is_soft(nr))
-			inc_eip = vcpu->arch.event_exit_inst_len;
-		if (kvm_inject_realmode_interrupt(vcpu, nr, inc_eip) != EMULATE_DONE)
-			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
-		return;
-	}
-
-	WARN_ON_ONCE(vmx->emulation_required);
-
-	if (kvm_exception_is_soft(nr)) {
-		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
-			     vmx->vcpu.arch.event_exit_inst_len);
-		intr_info |= INTR_TYPE_SOFT_EXCEPTION;
-	} else
-		intr_info |= INTR_TYPE_HARD_EXCEPTION;
-
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
-
-	vmx_clear_hlt(vcpu);
-}
-
-static bool vmx_rdtscp_supported(void)
-{
-	return cpu_has_vmx_rdtscp();
-}
-
-static bool vmx_invpcid_supported(void)
-{
-	return cpu_has_vmx_invpcid();
-}
-
-/*
- * Swap MSR entry in host/guest MSR entry array.
- */
-static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
-{
-	struct shared_msr_entry tmp;
-
-	tmp = vmx->guest_msrs[to];
-	vmx->guest_msrs[to] = vmx->guest_msrs[from];
-	vmx->guest_msrs[from] = tmp;
-}
-
-/*
- * Set up the vmcs to automatically save and restore system
- * msrs.  Don't touch the 64-bit msrs if the guest is in legacy
- * mode, as fiddling with msrs is very expensive.
- */
-static void setup_msrs(struct vcpu_vmx *vmx)
-{
-	int save_nmsrs, index;
-
-	save_nmsrs = 0;
-#ifdef CONFIG_X86_64
-	if (is_long_mode(&vmx->vcpu)) {
-		index = __find_msr_index(vmx, MSR_SYSCALL_MASK);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_LSTAR);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_CSTAR);
-		if (index >= 0)
-			move_msr_up(vmx, index, save_nmsrs++);
-		index = __find_msr_index(vmx, MSR_TSC_AUX);
-		if (index >= 0 && guest_cpuid_has(&vmx->vcpu, X86_FEATURE_RDTSCP))
-			move_msr_up(vmx, index, save_nmsrs++);
-		/*
-		 * MSR_STAR is only needed on long mode guests, and only
-		 * if efer.sce is enabled.
-		 */
-		index = __find_msr_index(vmx, MSR_STAR);
-		if ((index >= 0) && (vmx->vcpu.arch.efer & EFER_SCE))
-			move_msr_up(vmx, index, save_nmsrs++);
-	}
-#endif
-	index = __find_msr_index(vmx, MSR_EFER);
-	if (index >= 0 && update_transition_efer(vmx, index))
-		move_msr_up(vmx, index, save_nmsrs++);
-
-	vmx->save_nmsrs = save_nmsrs;
-	vmx->guest_msrs_dirty = true;
-
-	if (cpu_has_vmx_msr_bitmap())
-		vmx_update_msr_bitmap(&vmx->vcpu);
-}
-
-static u64 vmx_read_l1_tsc_offset(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	if (is_guest_mode(vcpu) &&
-	    (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING))
-		return vcpu->arch.tsc_offset - vmcs12->tsc_offset;
-
-	return vcpu->arch.tsc_offset;
-}
-
-static u64 vmx_write_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
-{
-	u64 active_offset = offset;
-	if (is_guest_mode(vcpu)) {
-		/*
-		 * We're here if L1 chose not to trap WRMSR to TSC. According
-		 * to the spec, this should set L1's TSC; The offset that L1
-		 * set for L2 remains unchanged, and still needs to be added
-		 * to the newly set TSC to get L2's TSC.
-		 */
-		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-		if (nested_cpu_has(vmcs12, CPU_BASED_USE_TSC_OFFSETING))
-			active_offset += vmcs12->tsc_offset;
-	} else {
-		trace_kvm_write_tsc_offset(vcpu->vcpu_id,
-					   vmcs_read64(TSC_OFFSET), offset);
-	}
-
-	vmcs_write64(TSC_OFFSET, active_offset);
-	return active_offset;
-}
-
-/*
- * nested_vmx_allowed() checks whether a guest should be allowed to use VMX
- * instructions and MSRs (i.e., nested VMX). Nested VMX is disabled for
- * all guests if the "nested" module option is off, and can also be disabled
- * for a single guest by disabling its VMX cpuid bit.
- */
-static inline bool nested_vmx_allowed(struct kvm_vcpu *vcpu)
-{
-	return nested && guest_cpuid_has(vcpu, X86_FEATURE_VMX);
-}
-
-/*
- * nested_vmx_setup_ctls_msrs() sets up variables containing the values to be
- * returned for the various VMX controls MSRs when nested VMX is enabled.
- * The same values should also be used to verify that vmcs12 control fields are
- * valid during nested entry from L1 to L2.
- * Each of these control msrs has a low and high 32-bit half: A low bit is on
- * if the corresponding bit in the (32-bit) control field *must* be on, and a
- * bit in the high half is on if the corresponding bit in the control field
- * may be on. See also vmx_control_verify().
- */
-static void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, bool apicv)
-{
-	if (!nested) {
-		memset(msrs, 0, sizeof(*msrs));
-		return;
-	}
-
-	/*
-	 * Note that as a general rule, the high half of the MSRs (bits in
-	 * the control fields which may be 1) should be initialized by the
-	 * intersection of the underlying hardware's MSR (i.e., features which
-	 * can be supported) and the list of features we want to expose -
-	 * because they are known to be properly supported in our code.
-	 * Also, usually, the low half of the MSRs (bits which must be 1) can
-	 * be set to 0, meaning that L1 may turn off any of these bits. The
-	 * reason is that if one of these bits is necessary, it will appear
-	 * in vmcs01 and prepare_vmcs02, when it bitwise-or's the control
-	 * fields of vmcs01 and vmcs02, will turn these bits off - and
-	 * nested_vmx_exit_reflected() will not pass related exits to L1.
-	 * These rules have exceptions below.
-	 */
-
-	/* pin-based controls */
-	rdmsr(MSR_IA32_VMX_PINBASED_CTLS,
-		msrs->pinbased_ctls_low,
-		msrs->pinbased_ctls_high);
-	msrs->pinbased_ctls_low |=
-		PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
-	msrs->pinbased_ctls_high &=
-		PIN_BASED_EXT_INTR_MASK |
-		PIN_BASED_NMI_EXITING |
-		PIN_BASED_VIRTUAL_NMIS |
-		(apicv ? PIN_BASED_POSTED_INTR : 0);
-	msrs->pinbased_ctls_high |=
-		PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR |
-		PIN_BASED_VMX_PREEMPTION_TIMER;
-
-	/* exit controls */
-	rdmsr(MSR_IA32_VMX_EXIT_CTLS,
-		msrs->exit_ctls_low,
-		msrs->exit_ctls_high);
-	msrs->exit_ctls_low =
-		VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR;
-
-	msrs->exit_ctls_high &=
-#ifdef CONFIG_X86_64
-		VM_EXIT_HOST_ADDR_SPACE_SIZE |
-#endif
-		VM_EXIT_LOAD_IA32_PAT | VM_EXIT_SAVE_IA32_PAT;
-	msrs->exit_ctls_high |=
-		VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR |
-		VM_EXIT_LOAD_IA32_EFER | VM_EXIT_SAVE_IA32_EFER |
-		VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | VM_EXIT_ACK_INTR_ON_EXIT;
-
-	/* We support free control of debug control saving. */
-	msrs->exit_ctls_low &= ~VM_EXIT_SAVE_DEBUG_CONTROLS;
-
-	/* entry controls */
-	rdmsr(MSR_IA32_VMX_ENTRY_CTLS,
-		msrs->entry_ctls_low,
-		msrs->entry_ctls_high);
-	msrs->entry_ctls_low =
-		VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR;
-	msrs->entry_ctls_high &=
-#ifdef CONFIG_X86_64
-		VM_ENTRY_IA32E_MODE |
-#endif
-		VM_ENTRY_LOAD_IA32_PAT;
-	msrs->entry_ctls_high |=
-		(VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR | VM_ENTRY_LOAD_IA32_EFER);
-
-	/* We support free control of debug control loading. */
-	msrs->entry_ctls_low &= ~VM_ENTRY_LOAD_DEBUG_CONTROLS;
-
-	/* cpu-based controls */
-	rdmsr(MSR_IA32_VMX_PROCBASED_CTLS,
-		msrs->procbased_ctls_low,
-		msrs->procbased_ctls_high);
-	msrs->procbased_ctls_low =
-		CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
-	msrs->procbased_ctls_high &=
-		CPU_BASED_VIRTUAL_INTR_PENDING |
-		CPU_BASED_VIRTUAL_NMI_PENDING | CPU_BASED_USE_TSC_OFFSETING |
-		CPU_BASED_HLT_EXITING | CPU_BASED_INVLPG_EXITING |
-		CPU_BASED_MWAIT_EXITING | CPU_BASED_CR3_LOAD_EXITING |
-		CPU_BASED_CR3_STORE_EXITING |
-#ifdef CONFIG_X86_64
-		CPU_BASED_CR8_LOAD_EXITING | CPU_BASED_CR8_STORE_EXITING |
-#endif
-		CPU_BASED_MOV_DR_EXITING | CPU_BASED_UNCOND_IO_EXITING |
-		CPU_BASED_USE_IO_BITMAPS | CPU_BASED_MONITOR_TRAP_FLAG |
-		CPU_BASED_MONITOR_EXITING | CPU_BASED_RDPMC_EXITING |
-		CPU_BASED_RDTSC_EXITING | CPU_BASED_PAUSE_EXITING |
-		CPU_BASED_TPR_SHADOW | CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
-	/*
-	 * We can allow some features even when not supported by the
-	 * hardware. For example, L1 can specify an MSR bitmap - and we
-	 * can use it to avoid exits to L1 - even when L0 runs L2
-	 * without MSR bitmaps.
-	 */
-	msrs->procbased_ctls_high |=
-		CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR |
-		CPU_BASED_USE_MSR_BITMAPS;
-
-	/* We support free control of CR3 access interception. */
-	msrs->procbased_ctls_low &=
-		~(CPU_BASED_CR3_LOAD_EXITING | CPU_BASED_CR3_STORE_EXITING);
-
-	/*
-	 * secondary cpu-based controls.  Do not include those that
-	 * depend on CPUID bits, they are added later by vmx_cpuid_update.
-	 */
-	rdmsr(MSR_IA32_VMX_PROCBASED_CTLS2,
-		msrs->secondary_ctls_low,
-		msrs->secondary_ctls_high);
-	msrs->secondary_ctls_low = 0;
-	msrs->secondary_ctls_high &=
-		SECONDARY_EXEC_DESC |
-		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
-		SECONDARY_EXEC_APIC_REGISTER_VIRT |
-		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
-		SECONDARY_EXEC_WBINVD_EXITING;
-
-	/*
-	 * We can emulate "VMCS shadowing," even if the hardware
-	 * doesn't support it.
-	 */
-	msrs->secondary_ctls_high |=
-		SECONDARY_EXEC_SHADOW_VMCS;
-
-	if (enable_ept) {
-		/* nested EPT: emulate EPT also to L1 */
-		msrs->secondary_ctls_high |=
-			SECONDARY_EXEC_ENABLE_EPT;
-		msrs->ept_caps = VMX_EPT_PAGE_WALK_4_BIT |
-			 VMX_EPTP_WB_BIT | VMX_EPT_INVEPT_BIT;
-		if (cpu_has_vmx_ept_execute_only())
-			msrs->ept_caps |=
-				VMX_EPT_EXECUTE_ONLY_BIT;
-		msrs->ept_caps &= vmx_capability.ept;
-		msrs->ept_caps |= VMX_EPT_EXTENT_GLOBAL_BIT |
-			VMX_EPT_EXTENT_CONTEXT_BIT | VMX_EPT_2MB_PAGE_BIT |
-			VMX_EPT_1GB_PAGE_BIT;
-		if (enable_ept_ad_bits) {
-			msrs->secondary_ctls_high |=
-				SECONDARY_EXEC_ENABLE_PML;
-			msrs->ept_caps |= VMX_EPT_AD_BIT;
-		}
-	}
-
-	if (cpu_has_vmx_vmfunc()) {
-		msrs->secondary_ctls_high |=
-			SECONDARY_EXEC_ENABLE_VMFUNC;
-		/*
-		 * Advertise EPTP switching unconditionally
-		 * since we emulate it
-		 */
-		if (enable_ept)
-			msrs->vmfunc_controls =
-				VMX_VMFUNC_EPTP_SWITCHING;
-	}
-
-	/*
-	 * Old versions of KVM use the single-context version without
-	 * checking for support, so declare that it is supported even
-	 * though it is treated as global context.  The alternative is
-	 * not failing the single-context invvpid, and it is worse.
-	 */
-	if (enable_vpid) {
-		msrs->secondary_ctls_high |=
-			SECONDARY_EXEC_ENABLE_VPID;
-		msrs->vpid_caps = VMX_VPID_INVVPID_BIT |
-			VMX_VPID_EXTENT_SUPPORTED_MASK;
-	}
-
-	if (enable_unrestricted_guest)
-		msrs->secondary_ctls_high |=
-			SECONDARY_EXEC_UNRESTRICTED_GUEST;
-
-	if (flexpriority_enabled)
-		msrs->secondary_ctls_high |=
-			SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-
-	/* miscellaneous data */
-	rdmsr(MSR_IA32_VMX_MISC,
-		msrs->misc_low,
-		msrs->misc_high);
-	msrs->misc_low &= VMX_MISC_SAVE_EFER_LMA;
-	msrs->misc_low |=
-		MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS |
-		VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE |
-		VMX_MISC_ACTIVITY_HLT;
-	msrs->misc_high = 0;
-
-	/*
-	 * This MSR reports some information about VMX support. We
-	 * should return information about the VMX we emulate for the
-	 * guest, and the VMCS structure we give it - not about the
-	 * VMX support of the underlying hardware.
-	 */
-	msrs->basic =
-		VMCS12_REVISION |
-		VMX_BASIC_TRUE_CTLS |
-		((u64)VMCS12_SIZE << VMX_BASIC_VMCS_SIZE_SHIFT) |
-		(VMX_BASIC_MEM_TYPE_WB << VMX_BASIC_MEM_TYPE_SHIFT);
-
-	if (cpu_has_vmx_basic_inout())
-		msrs->basic |= VMX_BASIC_INOUT;
-
-	/*
-	 * These MSRs specify bits which the guest must keep fixed on
-	 * while L1 is in VMXON mode (in L1's root mode, or running an L2).
-	 * We picked the standard core2 setting.
-	 */
-#define VMXON_CR0_ALWAYSON     (X86_CR0_PE | X86_CR0_PG | X86_CR0_NE)
-#define VMXON_CR4_ALWAYSON     X86_CR4_VMXE
-	msrs->cr0_fixed0 = VMXON_CR0_ALWAYSON;
-	msrs->cr4_fixed0 = VMXON_CR4_ALWAYSON;
-
-	/* These MSRs specify bits which the guest must keep fixed off. */
-	rdmsrl(MSR_IA32_VMX_CR0_FIXED1, msrs->cr0_fixed1);
-	rdmsrl(MSR_IA32_VMX_CR4_FIXED1, msrs->cr4_fixed1);
-
-	/* highest index: VMX_PREEMPTION_TIMER_VALUE */
-	msrs->vmcs_enum = VMCS12_MAX_FIELD_INDEX << 1;
-}
-
-/*
- * if fixed0[i] == 1: val[i] must be 1
- * if fixed1[i] == 0: val[i] must be 0
- */
-static inline bool fixed_bits_valid(u64 val, u64 fixed0, u64 fixed1)
-{
-	return ((val & fixed1) | fixed0) == val;
-}
-
-static inline bool vmx_control_verify(u32 control, u32 low, u32 high)
-{
-	return fixed_bits_valid(control, low, high);
-}
-
-static inline u64 vmx_control_msr(u32 low, u32 high)
-{
-	return low | ((u64)high << 32);
-}
-
-static bool is_bitwise_subset(u64 superset, u64 subset, u64 mask)
-{
-	superset &= mask;
-	subset &= mask;
-
-	return (superset | subset) == superset;
-}
-
-static int vmx_restore_vmx_basic(struct vcpu_vmx *vmx, u64 data)
-{
-	const u64 feature_and_reserved =
-		/* feature (except bit 48; see below) */
-		BIT_ULL(49) | BIT_ULL(54) | BIT_ULL(55) |
-		/* reserved */
-		BIT_ULL(31) | GENMASK_ULL(47, 45) | GENMASK_ULL(63, 56);
-	u64 vmx_basic = vmx->nested.msrs.basic;
-
-	if (!is_bitwise_subset(vmx_basic, data, feature_and_reserved))
-		return -EINVAL;
-
-	/*
-	 * KVM does not emulate a version of VMX that constrains physical
-	 * addresses of VMX structures (e.g. VMCS) to 32-bits.
-	 */
-	if (data & BIT_ULL(48))
-		return -EINVAL;
-
-	if (vmx_basic_vmcs_revision_id(vmx_basic) !=
-	    vmx_basic_vmcs_revision_id(data))
-		return -EINVAL;
-
-	if (vmx_basic_vmcs_size(vmx_basic) > vmx_basic_vmcs_size(data))
-		return -EINVAL;
-
-	vmx->nested.msrs.basic = data;
-	return 0;
-}
-
-static int
-vmx_restore_control_msr(struct vcpu_vmx *vmx, u32 msr_index, u64 data)
-{
-	u64 supported;
-	u32 *lowp, *highp;
-
-	switch (msr_index) {
-	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
-		lowp = &vmx->nested.msrs.pinbased_ctls_low;
-		highp = &vmx->nested.msrs.pinbased_ctls_high;
-		break;
-	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
-		lowp = &vmx->nested.msrs.procbased_ctls_low;
-		highp = &vmx->nested.msrs.procbased_ctls_high;
-		break;
-	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
-		lowp = &vmx->nested.msrs.exit_ctls_low;
-		highp = &vmx->nested.msrs.exit_ctls_high;
-		break;
-	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
-		lowp = &vmx->nested.msrs.entry_ctls_low;
-		highp = &vmx->nested.msrs.entry_ctls_high;
-		break;
-	case MSR_IA32_VMX_PROCBASED_CTLS2:
-		lowp = &vmx->nested.msrs.secondary_ctls_low;
-		highp = &vmx->nested.msrs.secondary_ctls_high;
-		break;
-	default:
-		BUG();
-	}
-
-	supported = vmx_control_msr(*lowp, *highp);
-
-	/* Check must-be-1 bits are still 1. */
-	if (!is_bitwise_subset(data, supported, GENMASK_ULL(31, 0)))
-		return -EINVAL;
-
-	/* Check must-be-0 bits are still 0. */
-	if (!is_bitwise_subset(supported, data, GENMASK_ULL(63, 32)))
-		return -EINVAL;
-
-	*lowp = data;
-	*highp = data >> 32;
-	return 0;
-}
-
-static int vmx_restore_vmx_misc(struct vcpu_vmx *vmx, u64 data)
-{
-	const u64 feature_and_reserved_bits =
-		/* feature */
-		BIT_ULL(5) | GENMASK_ULL(8, 6) | BIT_ULL(14) | BIT_ULL(15) |
-		BIT_ULL(28) | BIT_ULL(29) | BIT_ULL(30) |
-		/* reserved */
-		GENMASK_ULL(13, 9) | BIT_ULL(31);
-	u64 vmx_misc;
-
-	vmx_misc = vmx_control_msr(vmx->nested.msrs.misc_low,
-				   vmx->nested.msrs.misc_high);
-
-	if (!is_bitwise_subset(vmx_misc, data, feature_and_reserved_bits))
-		return -EINVAL;
-
-	if ((vmx->nested.msrs.pinbased_ctls_high &
-	     PIN_BASED_VMX_PREEMPTION_TIMER) &&
-	    vmx_misc_preemption_timer_rate(data) !=
-	    vmx_misc_preemption_timer_rate(vmx_misc))
-		return -EINVAL;
-
-	if (vmx_misc_cr3_count(data) > vmx_misc_cr3_count(vmx_misc))
-		return -EINVAL;
-
-	if (vmx_misc_max_msr(data) > vmx_misc_max_msr(vmx_misc))
-		return -EINVAL;
-
-	if (vmx_misc_mseg_revid(data) != vmx_misc_mseg_revid(vmx_misc))
-		return -EINVAL;
-
-	vmx->nested.msrs.misc_low = data;
-	vmx->nested.msrs.misc_high = data >> 32;
-
-	/*
-	 * If L1 has read-only VM-exit information fields, use the
-	 * less permissive vmx_vmwrite_bitmap to specify write
-	 * permissions for the shadow VMCS.
-	 */
-	if (enable_shadow_vmcs && !nested_cpu_has_vmwrite_any_field(&vmx->vcpu))
-		vmcs_write64(VMWRITE_BITMAP, __pa(vmx_vmwrite_bitmap));
-
-	return 0;
-}
-
-static int vmx_restore_vmx_ept_vpid_cap(struct vcpu_vmx *vmx, u64 data)
-{
-	u64 vmx_ept_vpid_cap;
-
-	vmx_ept_vpid_cap = vmx_control_msr(vmx->nested.msrs.ept_caps,
-					   vmx->nested.msrs.vpid_caps);
-
-	/* Every bit is either reserved or a feature bit. */
-	if (!is_bitwise_subset(vmx_ept_vpid_cap, data, -1ULL))
-		return -EINVAL;
-
-	vmx->nested.msrs.ept_caps = data;
-	vmx->nested.msrs.vpid_caps = data >> 32;
-	return 0;
-}
-
-static int vmx_restore_fixed0_msr(struct vcpu_vmx *vmx, u32 msr_index, u64 data)
-{
-	u64 *msr;
-
-	switch (msr_index) {
-	case MSR_IA32_VMX_CR0_FIXED0:
-		msr = &vmx->nested.msrs.cr0_fixed0;
-		break;
-	case MSR_IA32_VMX_CR4_FIXED0:
-		msr = &vmx->nested.msrs.cr4_fixed0;
-		break;
-	default:
-		BUG();
-	}
-
-	/*
-	 * 1 bits (which indicates bits which "must-be-1" during VMX operation)
-	 * must be 1 in the restored value.
-	 */
-	if (!is_bitwise_subset(data, *msr, -1ULL))
-		return -EINVAL;
-
-	*msr = data;
-	return 0;
-}
-
-/*
- * Called when userspace is restoring VMX MSRs.
- *
- * Returns 0 on success, non-0 otherwise.
- */
-static int vmx_set_vmx_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * Don't allow changes to the VMX capability MSRs while the vCPU
-	 * is in VMX operation.
-	 */
-	if (vmx->nested.vmxon)
-		return -EBUSY;
-
-	switch (msr_index) {
-	case MSR_IA32_VMX_BASIC:
-		return vmx_restore_vmx_basic(vmx, data);
-	case MSR_IA32_VMX_PINBASED_CTLS:
-	case MSR_IA32_VMX_PROCBASED_CTLS:
-	case MSR_IA32_VMX_EXIT_CTLS:
-	case MSR_IA32_VMX_ENTRY_CTLS:
-		/*
-		 * The "non-true" VMX capability MSRs are generated from the
-		 * "true" MSRs, so we do not support restoring them directly.
-		 *
-		 * If userspace wants to emulate VMX_BASIC[55]=0, userspace
-		 * should restore the "true" MSRs with the must-be-1 bits
-		 * set according to the SDM Vol 3. A.2 "RESERVED CONTROLS AND
-		 * DEFAULT SETTINGS".
-		 */
-		return -EINVAL;
-	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
-	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
-	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
-	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
-	case MSR_IA32_VMX_PROCBASED_CTLS2:
-		return vmx_restore_control_msr(vmx, msr_index, data);
-	case MSR_IA32_VMX_MISC:
-		return vmx_restore_vmx_misc(vmx, data);
-	case MSR_IA32_VMX_CR0_FIXED0:
-	case MSR_IA32_VMX_CR4_FIXED0:
-		return vmx_restore_fixed0_msr(vmx, msr_index, data);
-	case MSR_IA32_VMX_CR0_FIXED1:
-	case MSR_IA32_VMX_CR4_FIXED1:
-		/*
-		 * These MSRs are generated based on the vCPU's CPUID, so we
-		 * do not support restoring them directly.
-		 */
-		return -EINVAL;
-	case MSR_IA32_VMX_EPT_VPID_CAP:
-		return vmx_restore_vmx_ept_vpid_cap(vmx, data);
-	case MSR_IA32_VMX_VMCS_ENUM:
-		vmx->nested.msrs.vmcs_enum = data;
-		return 0;
-	default:
-		/*
-		 * The rest of the VMX capability MSRs do not support restore.
-		 */
-		return -EINVAL;
-	}
-}
-
-/* Returns 0 on success, non-0 otherwise. */
-static int vmx_get_vmx_msr(struct nested_vmx_msrs *msrs, u32 msr_index, u64 *pdata)
-{
-	switch (msr_index) {
-	case MSR_IA32_VMX_BASIC:
-		*pdata = msrs->basic;
-		break;
-	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
-	case MSR_IA32_VMX_PINBASED_CTLS:
-		*pdata = vmx_control_msr(
-			msrs->pinbased_ctls_low,
-			msrs->pinbased_ctls_high);
-		if (msr_index == MSR_IA32_VMX_PINBASED_CTLS)
-			*pdata |= PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
-		break;
-	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
-	case MSR_IA32_VMX_PROCBASED_CTLS:
-		*pdata = vmx_control_msr(
-			msrs->procbased_ctls_low,
-			msrs->procbased_ctls_high);
-		if (msr_index == MSR_IA32_VMX_PROCBASED_CTLS)
-			*pdata |= CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
-		break;
-	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
-	case MSR_IA32_VMX_EXIT_CTLS:
-		*pdata = vmx_control_msr(
-			msrs->exit_ctls_low,
-			msrs->exit_ctls_high);
-		if (msr_index == MSR_IA32_VMX_EXIT_CTLS)
-			*pdata |= VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR;
-		break;
-	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
-	case MSR_IA32_VMX_ENTRY_CTLS:
-		*pdata = vmx_control_msr(
-			msrs->entry_ctls_low,
-			msrs->entry_ctls_high);
-		if (msr_index == MSR_IA32_VMX_ENTRY_CTLS)
-			*pdata |= VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR;
-		break;
-	case MSR_IA32_VMX_MISC:
-		*pdata = vmx_control_msr(
-			msrs->misc_low,
-			msrs->misc_high);
-		break;
-	case MSR_IA32_VMX_CR0_FIXED0:
-		*pdata = msrs->cr0_fixed0;
-		break;
-	case MSR_IA32_VMX_CR0_FIXED1:
-		*pdata = msrs->cr0_fixed1;
-		break;
-	case MSR_IA32_VMX_CR4_FIXED0:
-		*pdata = msrs->cr4_fixed0;
-		break;
-	case MSR_IA32_VMX_CR4_FIXED1:
-		*pdata = msrs->cr4_fixed1;
-		break;
-	case MSR_IA32_VMX_VMCS_ENUM:
-		*pdata = msrs->vmcs_enum;
-		break;
-	case MSR_IA32_VMX_PROCBASED_CTLS2:
-		*pdata = vmx_control_msr(
-			msrs->secondary_ctls_low,
-			msrs->secondary_ctls_high);
-		break;
-	case MSR_IA32_VMX_EPT_VPID_CAP:
-		*pdata = msrs->ept_caps |
-			((u64)msrs->vpid_caps << 32);
-		break;
-	case MSR_IA32_VMX_VMFUNC:
-		*pdata = msrs->vmfunc_controls;
-		break;
-	default:
-		return 1;
-	}
-
-	return 0;
-}
-
-static inline bool vmx_feature_control_msr_valid(struct kvm_vcpu *vcpu,
-						 uint64_t val)
-{
-	uint64_t valid_bits = to_vmx(vcpu)->msr_ia32_feature_control_valid_bits;
-
-	return !(val & ~valid_bits);
-}
-
-static int vmx_get_msr_feature(struct kvm_msr_entry *msr)
-{
-	switch (msr->index) {
-	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
-		if (!nested)
-			return 1;
-		return vmx_get_vmx_msr(&vmcs_config.nested, msr->index, &msr->data);
-	default:
-		return 1;
-	}
-
-	return 0;
-}
-
-/*
- * Reads an msr value (of 'msr_index') into 'pdata'.
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct shared_msr_entry *msr;
-
-	switch (msr_info->index) {
-#ifdef CONFIG_X86_64
-	case MSR_FS_BASE:
-		msr_info->data = vmcs_readl(GUEST_FS_BASE);
-		break;
-	case MSR_GS_BASE:
-		msr_info->data = vmcs_readl(GUEST_GS_BASE);
-		break;
-	case MSR_KERNEL_GS_BASE:
-		msr_info->data = vmx_read_guest_kernel_gs_base(vmx);
-		break;
-#endif
-	case MSR_EFER:
-		return kvm_get_msr_common(vcpu, msr_info);
-	case MSR_IA32_SPEC_CTRL:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
-			return 1;
-
-		msr_info->data = to_vmx(vcpu)->spec_ctrl;
-		break;
-	case MSR_IA32_ARCH_CAPABILITIES:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_ARCH_CAPABILITIES))
-			return 1;
-		msr_info->data = to_vmx(vcpu)->arch_capabilities;
-		break;
-	case MSR_IA32_SYSENTER_CS:
-		msr_info->data = vmcs_read32(GUEST_SYSENTER_CS);
-		break;
-	case MSR_IA32_SYSENTER_EIP:
-		msr_info->data = vmcs_readl(GUEST_SYSENTER_EIP);
-		break;
-	case MSR_IA32_SYSENTER_ESP:
-		msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP);
-		break;
-	case MSR_IA32_BNDCFGS:
-		if (!kvm_mpx_supported() ||
-		    (!msr_info->host_initiated &&
-		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
-			return 1;
-		msr_info->data = vmcs_read64(GUEST_BNDCFGS);
-		break;
-	case MSR_IA32_MCG_EXT_CTL:
-		if (!msr_info->host_initiated &&
-		    !(vmx->msr_ia32_feature_control &
-		      FEATURE_CONTROL_LMCE))
-			return 1;
-		msr_info->data = vcpu->arch.mcg_ext_ctl;
-		break;
-	case MSR_IA32_FEATURE_CONTROL:
-		msr_info->data = vmx->msr_ia32_feature_control;
-		break;
-	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
-		if (!nested_vmx_allowed(vcpu))
-			return 1;
-		return vmx_get_vmx_msr(&vmx->nested.msrs, msr_info->index,
-				       &msr_info->data);
-	case MSR_IA32_XSS:
-		if (!vmx_xsaves_supported())
-			return 1;
-		msr_info->data = vcpu->arch.ia32_xss;
-		break;
-	case MSR_TSC_AUX:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
-			return 1;
-		/* Otherwise falls through */
-	default:
-		msr = find_msr_entry(vmx, msr_info->index);
-		if (msr) {
-			msr_info->data = msr->data;
-			break;
-		}
-		return kvm_get_msr_common(vcpu, msr_info);
-	}
-
-	return 0;
-}
-
-static void vmx_leave_nested(struct kvm_vcpu *vcpu);
-
-/*
- * Writes msr value into into the appropriate "register".
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct shared_msr_entry *msr;
-	int ret = 0;
-	u32 msr_index = msr_info->index;
-	u64 data = msr_info->data;
-
-	switch (msr_index) {
-	case MSR_EFER:
-		ret = kvm_set_msr_common(vcpu, msr_info);
-		break;
-#ifdef CONFIG_X86_64
-	case MSR_FS_BASE:
-		vmx_segment_cache_clear(vmx);
-		vmcs_writel(GUEST_FS_BASE, data);
-		break;
-	case MSR_GS_BASE:
-		vmx_segment_cache_clear(vmx);
-		vmcs_writel(GUEST_GS_BASE, data);
-		break;
-	case MSR_KERNEL_GS_BASE:
-		vmx_write_guest_kernel_gs_base(vmx, data);
-		break;
-#endif
-	case MSR_IA32_SYSENTER_CS:
-		vmcs_write32(GUEST_SYSENTER_CS, data);
-		break;
-	case MSR_IA32_SYSENTER_EIP:
-		vmcs_writel(GUEST_SYSENTER_EIP, data);
-		break;
-	case MSR_IA32_SYSENTER_ESP:
-		vmcs_writel(GUEST_SYSENTER_ESP, data);
-		break;
-	case MSR_IA32_BNDCFGS:
-		if (!kvm_mpx_supported() ||
-		    (!msr_info->host_initiated &&
-		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
-			return 1;
-		if (is_noncanonical_address(data & PAGE_MASK, vcpu) ||
-		    (data & MSR_IA32_BNDCFGS_RSVD))
-			return 1;
-		vmcs_write64(GUEST_BNDCFGS, data);
-		break;
-	case MSR_IA32_SPEC_CTRL:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
-			return 1;
-
-		/* The STIBP bit doesn't fault even if it's not advertised */
-		if (data & ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD))
-			return 1;
-
-		vmx->spec_ctrl = data;
-
-		if (!data)
-			break;
-
-		/*
-		 * For non-nested:
-		 * When it's written (to non-zero) for the first time, pass
-		 * it through.
-		 *
-		 * For nested:
-		 * The handling of the MSR bitmap for L2 guests is done in
-		 * nested_vmx_merge_msr_bitmap. We should not touch the
-		 * vmcs02.msr_bitmap here since it gets completely overwritten
-		 * in the merging. We update the vmcs01 here for L1 as well
-		 * since it will end up touching the MSR anyway now.
-		 */
-		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap,
-					      MSR_IA32_SPEC_CTRL,
-					      MSR_TYPE_RW);
-		break;
-	case MSR_IA32_PRED_CMD:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
-			return 1;
-
-		if (data & ~PRED_CMD_IBPB)
-			return 1;
-
-		if (!data)
-			break;
-
-		wrmsrl(MSR_IA32_PRED_CMD, PRED_CMD_IBPB);
-
-		/*
-		 * For non-nested:
-		 * When it's written (to non-zero) for the first time, pass
-		 * it through.
-		 *
-		 * For nested:
-		 * The handling of the MSR bitmap for L2 guests is done in
-		 * nested_vmx_merge_msr_bitmap. We should not touch the
-		 * vmcs02.msr_bitmap here since it gets completely overwritten
-		 * in the merging.
-		 */
-		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap, MSR_IA32_PRED_CMD,
-					      MSR_TYPE_W);
-		break;
-	case MSR_IA32_ARCH_CAPABILITIES:
-		if (!msr_info->host_initiated)
-			return 1;
-		vmx->arch_capabilities = data;
-		break;
-	case MSR_IA32_CR_PAT:
-		if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
-			if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
-				return 1;
-			vmcs_write64(GUEST_IA32_PAT, data);
-			vcpu->arch.pat = data;
-			break;
-		}
-		ret = kvm_set_msr_common(vcpu, msr_info);
-		break;
-	case MSR_IA32_TSC_ADJUST:
-		ret = kvm_set_msr_common(vcpu, msr_info);
-		break;
-	case MSR_IA32_MCG_EXT_CTL:
-		if ((!msr_info->host_initiated &&
-		     !(to_vmx(vcpu)->msr_ia32_feature_control &
-		       FEATURE_CONTROL_LMCE)) ||
-		    (data & ~MCG_EXT_CTL_LMCE_EN))
-			return 1;
-		vcpu->arch.mcg_ext_ctl = data;
-		break;
-	case MSR_IA32_FEATURE_CONTROL:
-		if (!vmx_feature_control_msr_valid(vcpu, data) ||
-		    (to_vmx(vcpu)->msr_ia32_feature_control &
-		     FEATURE_CONTROL_LOCKED && !msr_info->host_initiated))
-			return 1;
-		vmx->msr_ia32_feature_control = data;
-		if (msr_info->host_initiated && data == 0)
-			vmx_leave_nested(vcpu);
-		break;
-	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
-		if (!msr_info->host_initiated)
-			return 1; /* they are read-only */
-		if (!nested_vmx_allowed(vcpu))
-			return 1;
-		return vmx_set_vmx_msr(vcpu, msr_index, data);
-	case MSR_IA32_XSS:
-		if (!vmx_xsaves_supported())
-			return 1;
-		/*
-		 * The only supported bit as of Skylake is bit 8, but
-		 * it is not supported on KVM.
-		 */
-		if (data != 0)
-			return 1;
-		vcpu->arch.ia32_xss = data;
-		if (vcpu->arch.ia32_xss != host_xss)
-			add_atomic_switch_msr(vmx, MSR_IA32_XSS,
-				vcpu->arch.ia32_xss, host_xss, false);
-		else
-			clear_atomic_switch_msr(vmx, MSR_IA32_XSS);
-		break;
-	case MSR_TSC_AUX:
-		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
-			return 1;
-		/* Check reserved bit, higher 32 bits should be zero */
-		if ((data >> 32) != 0)
-			return 1;
-		/* Otherwise falls through */
-	default:
-		msr = find_msr_entry(vmx, msr_index);
-		if (msr) {
-			u64 old_msr_data = msr->data;
-			msr->data = data;
-			if (msr - vmx->guest_msrs < vmx->save_nmsrs) {
-				preempt_disable();
-				ret = kvm_set_shared_msr(msr->index, msr->data,
-							 msr->mask);
-				preempt_enable();
-				if (ret)
-					msr->data = old_msr_data;
-			}
-			break;
-		}
-		ret = kvm_set_msr_common(vcpu, msr_info);
-	}
-
-	return ret;
-}
-
-static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
-{
-	__set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
-	switch (reg) {
-	case VCPU_REGS_RSP:
-		vcpu->arch.regs[VCPU_REGS_RSP] = vmcs_readl(GUEST_RSP);
-		break;
-	case VCPU_REGS_RIP:
-		vcpu->arch.regs[VCPU_REGS_RIP] = vmcs_readl(GUEST_RIP);
-		break;
-	case VCPU_EXREG_PDPTR:
-		if (enable_ept)
-			ept_save_pdptrs(vcpu);
-		break;
-	default:
-		break;
-	}
-}
-
-static __init int cpu_has_kvm_support(void)
-{
-	return cpu_has_vmx();
-}
-
-static __init int vmx_disabled_by_bios(void)
-{
-	u64 msr;
-
-	rdmsrl(MSR_IA32_FEATURE_CONTROL, msr);
-	if (msr & FEATURE_CONTROL_LOCKED) {
-		/* launched w/ TXT and VMX disabled */
-		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
-			&& tboot_enabled())
-			return 1;
-		/* launched w/o TXT and VMX only enabled w/ TXT */
-		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
-			&& (msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
-			&& !tboot_enabled()) {
-			printk(KERN_WARNING "kvm: disable TXT in the BIOS or "
-				"activate TXT before enabling KVM\n");
-			return 1;
-		}
-		/* launched w/o TXT and VMX disabled */
-		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
-			&& !tboot_enabled())
-			return 1;
-	}
-
-	return 0;
-}
-
-static void kvm_cpu_vmxon(u64 addr)
-{
-	cr4_set_bits(X86_CR4_VMXE);
-	intel_pt_handle_vmx(1);
-
-	asm volatile ("vmxon %0" : : "m"(addr));
-}
-
-static int hardware_enable(void)
-{
-	int cpu = raw_smp_processor_id();
-	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
-	u64 old, test_bits;
-
-	if (cr4_read_shadow() & X86_CR4_VMXE)
-		return -EBUSY;
-
-	/*
-	 * This can happen if we hot-added a CPU but failed to allocate
-	 * VP assist page for it.
-	 */
-	if (static_branch_unlikely(&enable_evmcs) &&
-	    !hv_get_vp_assist_page(cpu))
-		return -EFAULT;
-
-	INIT_LIST_HEAD(&per_cpu(loaded_vmcss_on_cpu, cpu));
-	INIT_LIST_HEAD(&per_cpu(blocked_vcpu_on_cpu, cpu));
-	spin_lock_init(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
-
-	/*
-	 * Now we can enable the vmclear operation in kdump
-	 * since the loaded_vmcss_on_cpu list on this cpu
-	 * has been initialized.
-	 *
-	 * Though the cpu is not in VMX operation now, there
-	 * is no problem to enable the vmclear operation
-	 * for the loaded_vmcss_on_cpu list is empty!
-	 */
-	crash_enable_local_vmclear(cpu);
-
-	rdmsrl(MSR_IA32_FEATURE_CONTROL, old);
-
-	test_bits = FEATURE_CONTROL_LOCKED;
-	test_bits |= FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
-	if (tboot_enabled())
-		test_bits |= FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX;
-
-	if ((old & test_bits) != test_bits) {
-		/* enable and lock */
-		wrmsrl(MSR_IA32_FEATURE_CONTROL, old | test_bits);
-	}
-	kvm_cpu_vmxon(phys_addr);
-	if (enable_ept)
-		ept_sync_global();
-
-	return 0;
-}
-
-static void vmclear_local_loaded_vmcss(void)
-{
-	int cpu = raw_smp_processor_id();
-	struct loaded_vmcs *v, *n;
-
-	list_for_each_entry_safe(v, n, &per_cpu(loaded_vmcss_on_cpu, cpu),
-				 loaded_vmcss_on_cpu_link)
-		__loaded_vmcs_clear(v);
-}
-
-
-/* Just like cpu_vmxoff(), but with the __kvm_handle_fault_on_reboot()
- * tricks.
- */
-static void kvm_cpu_vmxoff(void)
-{
-	asm volatile (__ex("vmxoff"));
-
-	intel_pt_handle_vmx(0);
-	cr4_clear_bits(X86_CR4_VMXE);
-}
-
-static void hardware_disable(void)
-{
-	vmclear_local_loaded_vmcss();
-	kvm_cpu_vmxoff();
-}
-
-static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
-				      u32 msr, u32 *result)
-{
-	u32 vmx_msr_low, vmx_msr_high;
-	u32 ctl = ctl_min | ctl_opt;
-
-	rdmsr(msr, vmx_msr_low, vmx_msr_high);
-
-	ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */
-	ctl |= vmx_msr_low;  /* bit == 1 in low word  ==> must be one  */
-
-	/* Ensure minimum (required) set of control bits are supported. */
-	if (ctl_min & ~ctl)
-		return -EIO;
-
-	*result = ctl;
-	return 0;
-}
-
-static __init bool allow_1_setting(u32 msr, u32 ctl)
-{
-	u32 vmx_msr_low, vmx_msr_high;
-
-	rdmsr(msr, vmx_msr_low, vmx_msr_high);
-	return vmx_msr_high & ctl;
-}
-
-static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf)
-{
-	u32 vmx_msr_low, vmx_msr_high;
-	u32 min, opt, min2, opt2;
-	u32 _pin_based_exec_control = 0;
-	u32 _cpu_based_exec_control = 0;
-	u32 _cpu_based_2nd_exec_control = 0;
-	u32 _vmexit_control = 0;
-	u32 _vmentry_control = 0;
-
-	memset(vmcs_conf, 0, sizeof(*vmcs_conf));
-	min = CPU_BASED_HLT_EXITING |
-#ifdef CONFIG_X86_64
-	      CPU_BASED_CR8_LOAD_EXITING |
-	      CPU_BASED_CR8_STORE_EXITING |
-#endif
-	      CPU_BASED_CR3_LOAD_EXITING |
-	      CPU_BASED_CR3_STORE_EXITING |
-	      CPU_BASED_UNCOND_IO_EXITING |
-	      CPU_BASED_MOV_DR_EXITING |
-	      CPU_BASED_USE_TSC_OFFSETING |
-	      CPU_BASED_MWAIT_EXITING |
-	      CPU_BASED_MONITOR_EXITING |
-	      CPU_BASED_INVLPG_EXITING |
-	      CPU_BASED_RDPMC_EXITING;
-
-	opt = CPU_BASED_TPR_SHADOW |
-	      CPU_BASED_USE_MSR_BITMAPS |
-	      CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS,
-				&_cpu_based_exec_control) < 0)
-		return -EIO;
-#ifdef CONFIG_X86_64
-	if ((_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
-		_cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
-					   ~CPU_BASED_CR8_STORE_EXITING;
-#endif
-	if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
-		min2 = 0;
-		opt2 = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
-			SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
-			SECONDARY_EXEC_WBINVD_EXITING |
-			SECONDARY_EXEC_ENABLE_VPID |
-			SECONDARY_EXEC_ENABLE_EPT |
-			SECONDARY_EXEC_UNRESTRICTED_GUEST |
-			SECONDARY_EXEC_PAUSE_LOOP_EXITING |
-			SECONDARY_EXEC_DESC |
-			SECONDARY_EXEC_RDTSCP |
-			SECONDARY_EXEC_ENABLE_INVPCID |
-			SECONDARY_EXEC_APIC_REGISTER_VIRT |
-			SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
-			SECONDARY_EXEC_SHADOW_VMCS |
-			SECONDARY_EXEC_XSAVES |
-			SECONDARY_EXEC_RDSEED_EXITING |
-			SECONDARY_EXEC_RDRAND_EXITING |
-			SECONDARY_EXEC_ENABLE_PML |
-			SECONDARY_EXEC_TSC_SCALING |
-			SECONDARY_EXEC_ENABLE_VMFUNC |
-			SECONDARY_EXEC_ENCLS_EXITING;
-		if (adjust_vmx_controls(min2, opt2,
-					MSR_IA32_VMX_PROCBASED_CTLS2,
-					&_cpu_based_2nd_exec_control) < 0)
-			return -EIO;
-	}
-#ifndef CONFIG_X86_64
-	if (!(_cpu_based_2nd_exec_control &
-				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
-		_cpu_based_exec_control &= ~CPU_BASED_TPR_SHADOW;
-#endif
-
-	if (!(_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
-		_cpu_based_2nd_exec_control &= ~(
-				SECONDARY_EXEC_APIC_REGISTER_VIRT |
-				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
-				SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-
-	rdmsr_safe(MSR_IA32_VMX_EPT_VPID_CAP,
-		&vmx_capability.ept, &vmx_capability.vpid);
-
-	if (_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_EPT) {
-		/* CR3 accesses and invlpg don't need to cause VM Exits when EPT
-		   enabled */
-		_cpu_based_exec_control &= ~(CPU_BASED_CR3_LOAD_EXITING |
-					     CPU_BASED_CR3_STORE_EXITING |
-					     CPU_BASED_INVLPG_EXITING);
-	} else if (vmx_capability.ept) {
-		vmx_capability.ept = 0;
-		pr_warn_once("EPT CAP should not exist if not support "
-				"1-setting enable EPT VM-execution control\n");
-	}
-	if (!(_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_VPID) &&
-		vmx_capability.vpid) {
-		vmx_capability.vpid = 0;
-		pr_warn_once("VPID CAP should not exist if not support "
-				"1-setting enable VPID VM-execution control\n");
-	}
-
-	min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT;
-#ifdef CONFIG_X86_64
-	min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
-#endif
-	opt = VM_EXIT_SAVE_IA32_PAT | VM_EXIT_LOAD_IA32_PAT |
-		VM_EXIT_CLEAR_BNDCFGS;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS,
-				&_vmexit_control) < 0)
-		return -EIO;
-
-	min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING;
-	opt = PIN_BASED_VIRTUAL_NMIS | PIN_BASED_POSTED_INTR |
-		 PIN_BASED_VMX_PREEMPTION_TIMER;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS,
-				&_pin_based_exec_control) < 0)
-		return -EIO;
-
-	if (cpu_has_broken_vmx_preemption_timer())
-		_pin_based_exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
-	if (!(_cpu_based_2nd_exec_control &
-		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY))
-		_pin_based_exec_control &= ~PIN_BASED_POSTED_INTR;
-
-	min = VM_ENTRY_LOAD_DEBUG_CONTROLS;
-	opt = VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_LOAD_BNDCFGS;
-	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS,
-				&_vmentry_control) < 0)
-		return -EIO;
-
-	rdmsr(MSR_IA32_VMX_BASIC, vmx_msr_low, vmx_msr_high);
-
-	/* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */
-	if ((vmx_msr_high & 0x1fff) > PAGE_SIZE)
-		return -EIO;
-
-#ifdef CONFIG_X86_64
-	/* IA-32 SDM Vol 3B: 64-bit CPUs always have VMX_BASIC_MSR[48]==0. */
-	if (vmx_msr_high & (1u<<16))
-		return -EIO;
-#endif
-
-	/* Require Write-Back (WB) memory type for VMCS accesses. */
-	if (((vmx_msr_high >> 18) & 15) != 6)
-		return -EIO;
-
-	vmcs_conf->size = vmx_msr_high & 0x1fff;
-	vmcs_conf->order = get_order(vmcs_conf->size);
-	vmcs_conf->basic_cap = vmx_msr_high & ~0x1fff;
-
-	vmcs_conf->revision_id = vmx_msr_low;
-
-	vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control;
-	vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control;
-	vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control;
-	vmcs_conf->vmexit_ctrl         = _vmexit_control;
-	vmcs_conf->vmentry_ctrl        = _vmentry_control;
-
-	if (static_branch_unlikely(&enable_evmcs))
-		evmcs_sanitize_exec_ctrls(vmcs_conf);
-
-	cpu_has_load_ia32_efer =
-		allow_1_setting(MSR_IA32_VMX_ENTRY_CTLS,
-				VM_ENTRY_LOAD_IA32_EFER)
-		&& allow_1_setting(MSR_IA32_VMX_EXIT_CTLS,
-				   VM_EXIT_LOAD_IA32_EFER);
-
-	cpu_has_load_perf_global_ctrl =
-		allow_1_setting(MSR_IA32_VMX_ENTRY_CTLS,
-				VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
-		&& allow_1_setting(MSR_IA32_VMX_EXIT_CTLS,
-				   VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL);
-
-	/*
-	 * Some cpus support VM_ENTRY_(LOAD|SAVE)_IA32_PERF_GLOBAL_CTRL
-	 * but due to errata below it can't be used. Workaround is to use
-	 * msr load mechanism to switch IA32_PERF_GLOBAL_CTRL.
-	 *
-	 * VM Exit May Incorrectly Clear IA32_PERF_GLOBAL_CTRL [34:32]
-	 *
-	 * AAK155             (model 26)
-	 * AAP115             (model 30)
-	 * AAT100             (model 37)
-	 * BC86,AAY89,BD102   (model 44)
-	 * BA97               (model 46)
-	 *
-	 */
-	if (cpu_has_load_perf_global_ctrl && boot_cpu_data.x86 == 0x6) {
-		switch (boot_cpu_data.x86_model) {
-		case 26:
-		case 30:
-		case 37:
-		case 44:
-		case 46:
-			cpu_has_load_perf_global_ctrl = false;
-			printk_once(KERN_WARNING"kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL "
-					"does not work properly. Using workaround\n");
-			break;
-		default:
-			break;
-		}
-	}
-
-	if (boot_cpu_has(X86_FEATURE_XSAVES))
-		rdmsrl(MSR_IA32_XSS, host_xss);
-
-	return 0;
-}
-
-static struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu)
-{
-	int node = cpu_to_node(cpu);
-	struct page *pages;
-	struct vmcs *vmcs;
-
-	pages = __alloc_pages_node(node, GFP_KERNEL, vmcs_config.order);
-	if (!pages)
-		return NULL;
-	vmcs = page_address(pages);
-	memset(vmcs, 0, vmcs_config.size);
-
-	/* KVM supports Enlightened VMCS v1 only */
-	if (static_branch_unlikely(&enable_evmcs))
-		vmcs->hdr.revision_id = KVM_EVMCS_VERSION;
-	else
-		vmcs->hdr.revision_id = vmcs_config.revision_id;
-
-	if (shadow)
-		vmcs->hdr.shadow_vmcs = 1;
-	return vmcs;
-}
-
-static void free_vmcs(struct vmcs *vmcs)
-{
-	free_pages((unsigned long)vmcs, vmcs_config.order);
-}
-
-/*
- * Free a VMCS, but before that VMCLEAR it on the CPU where it was last loaded
- */
-static void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
-{
-	if (!loaded_vmcs->vmcs)
-		return;
-	loaded_vmcs_clear(loaded_vmcs);
-	free_vmcs(loaded_vmcs->vmcs);
-	loaded_vmcs->vmcs = NULL;
-	if (loaded_vmcs->msr_bitmap)
-		free_page((unsigned long)loaded_vmcs->msr_bitmap);
-	WARN_ON(loaded_vmcs->shadow_vmcs != NULL);
-}
-
-static struct vmcs *alloc_vmcs(bool shadow)
-{
-	return alloc_vmcs_cpu(shadow, raw_smp_processor_id());
-}
-
-static int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
-{
-	loaded_vmcs->vmcs = alloc_vmcs(false);
-	if (!loaded_vmcs->vmcs)
-		return -ENOMEM;
-
-	loaded_vmcs->shadow_vmcs = NULL;
-	loaded_vmcs_init(loaded_vmcs);
-
-	if (cpu_has_vmx_msr_bitmap()) {
-		loaded_vmcs->msr_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
-		if (!loaded_vmcs->msr_bitmap)
-			goto out_vmcs;
-		memset(loaded_vmcs->msr_bitmap, 0xff, PAGE_SIZE);
-
-		if (IS_ENABLED(CONFIG_HYPERV) &&
-		    static_branch_unlikely(&enable_evmcs) &&
-		    (ms_hyperv.nested_features & HV_X64_NESTED_MSR_BITMAP)) {
-			struct hv_enlightened_vmcs *evmcs =
-				(struct hv_enlightened_vmcs *)loaded_vmcs->vmcs;
-
-			evmcs->hv_enlightenments_control.msr_bitmap = 1;
-		}
-	}
-
-	memset(&loaded_vmcs->host_state, 0, sizeof(struct vmcs_host_state));
-
-	return 0;
-
-out_vmcs:
-	free_loaded_vmcs(loaded_vmcs);
-	return -ENOMEM;
-}
-
-static void free_kvm_area(void)
-{
-	int cpu;
-
-	for_each_possible_cpu(cpu) {
-		free_vmcs(per_cpu(vmxarea, cpu));
-		per_cpu(vmxarea, cpu) = NULL;
-	}
-}
-
-enum vmcs_field_width {
-	VMCS_FIELD_WIDTH_U16 = 0,
-	VMCS_FIELD_WIDTH_U64 = 1,
-	VMCS_FIELD_WIDTH_U32 = 2,
-	VMCS_FIELD_WIDTH_NATURAL_WIDTH = 3
-};
-
-static inline int vmcs_field_width(unsigned long field)
-{
-	if (0x1 & field)	/* the *_HIGH fields are all 32 bit */
-		return VMCS_FIELD_WIDTH_U32;
-	return (field >> 13) & 0x3 ;
-}
-
-static inline int vmcs_field_readonly(unsigned long field)
-{
-	return (((field >> 10) & 0x3) == 1);
-}
-
-static void init_vmcs_shadow_fields(void)
-{
-	int i, j;
-
-	for (i = j = 0; i < max_shadow_read_only_fields; i++) {
-		u16 field = shadow_read_only_fields[i];
-		if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
-		    (i + 1 == max_shadow_read_only_fields ||
-		     shadow_read_only_fields[i + 1] != field + 1))
-			pr_err("Missing field from shadow_read_only_field %x\n",
-			       field + 1);
-
-		clear_bit(field, vmx_vmread_bitmap);
-#ifdef CONFIG_X86_64
-		if (field & 1)
-			continue;
-#endif
-		if (j < i)
-			shadow_read_only_fields[j] = field;
-		j++;
-	}
-	max_shadow_read_only_fields = j;
-
-	for (i = j = 0; i < max_shadow_read_write_fields; i++) {
-		u16 field = shadow_read_write_fields[i];
-		if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
-		    (i + 1 == max_shadow_read_write_fields ||
-		     shadow_read_write_fields[i + 1] != field + 1))
-			pr_err("Missing field from shadow_read_write_field %x\n",
-			       field + 1);
-
-		/*
-		 * PML and the preemption timer can be emulated, but the
-		 * processor cannot vmwrite to fields that don't exist
-		 * on bare metal.
-		 */
-		switch (field) {
-		case GUEST_PML_INDEX:
-			if (!cpu_has_vmx_pml())
-				continue;
-			break;
-		case VMX_PREEMPTION_TIMER_VALUE:
-			if (!cpu_has_vmx_preemption_timer())
-				continue;
-			break;
-		case GUEST_INTR_STATUS:
-			if (!cpu_has_vmx_apicv())
-				continue;
-			break;
-		default:
-			break;
-		}
-
-		clear_bit(field, vmx_vmwrite_bitmap);
-		clear_bit(field, vmx_vmread_bitmap);
-#ifdef CONFIG_X86_64
-		if (field & 1)
-			continue;
-#endif
-		if (j < i)
-			shadow_read_write_fields[j] = field;
-		j++;
-	}
-	max_shadow_read_write_fields = j;
-}
-
-static __init int alloc_kvm_area(void)
-{
-	int cpu;
-
-	for_each_possible_cpu(cpu) {
-		struct vmcs *vmcs;
-
-		vmcs = alloc_vmcs_cpu(false, cpu);
-		if (!vmcs) {
-			free_kvm_area();
-			return -ENOMEM;
-		}
-
-		/*
-		 * When eVMCS is enabled, alloc_vmcs_cpu() sets
-		 * vmcs->revision_id to KVM_EVMCS_VERSION instead of
-		 * revision_id reported by MSR_IA32_VMX_BASIC.
-		 *
-		 * However, even though not explictly documented by
-		 * TLFS, VMXArea passed as VMXON argument should
-		 * still be marked with revision_id reported by
-		 * physical CPU.
-		 */
-		if (static_branch_unlikely(&enable_evmcs))
-			vmcs->hdr.revision_id = vmcs_config.revision_id;
-
-		per_cpu(vmxarea, cpu) = vmcs;
-	}
-	return 0;
-}
-
-static void fix_pmode_seg(struct kvm_vcpu *vcpu, int seg,
-		struct kvm_segment *save)
-{
-	if (!emulate_invalid_guest_state) {
-		/*
-		 * CS and SS RPL should be equal during guest entry according
-		 * to VMX spec, but in reality it is not always so. Since vcpu
-		 * is in the middle of the transition from real mode to
-		 * protected mode it is safe to assume that RPL 0 is a good
-		 * default value.
-		 */
-		if (seg == VCPU_SREG_CS || seg == VCPU_SREG_SS)
-			save->selector &= ~SEGMENT_RPL_MASK;
-		save->dpl = save->selector & SEGMENT_RPL_MASK;
-		save->s = 1;
-	}
-	vmx_set_segment(vcpu, save, seg);
-}
-
-static void enter_pmode(struct kvm_vcpu *vcpu)
-{
-	unsigned long flags;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * Update real mode segment cache. It may be not up-to-date if sement
-	 * register was written while vcpu was in a guest mode.
-	 */
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
-
-	vmx->rmode.vm86_active = 0;
-
-	vmx_segment_cache_clear(vmx);
-
-	vmx_set_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
-
-	flags = vmcs_readl(GUEST_RFLAGS);
-	flags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
-	flags |= vmx->rmode.save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
-	vmcs_writel(GUEST_RFLAGS, flags);
-
-	vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) |
-			(vmcs_readl(CR4_READ_SHADOW) & X86_CR4_VME));
-
-	update_exception_bitmap(vcpu);
-
-	fix_pmode_seg(vcpu, VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
-	fix_pmode_seg(vcpu, VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
-	fix_pmode_seg(vcpu, VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
-	fix_pmode_seg(vcpu, VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
-	fix_pmode_seg(vcpu, VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
-	fix_pmode_seg(vcpu, VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
-}
-
-static void fix_rmode_seg(int seg, struct kvm_segment *save)
-{
-	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-	struct kvm_segment var = *save;
-
-	var.dpl = 0x3;
-	if (seg == VCPU_SREG_CS)
-		var.type = 0x3;
-
-	if (!emulate_invalid_guest_state) {
-		var.selector = var.base >> 4;
-		var.base = var.base & 0xffff0;
-		var.limit = 0xffff;
-		var.g = 0;
-		var.db = 0;
-		var.present = 1;
-		var.s = 1;
-		var.l = 0;
-		var.unusable = 0;
-		var.type = 0x3;
-		var.avl = 0;
-		if (save->base & 0xf)
-			printk_once(KERN_WARNING "kvm: segment base is not "
-					"paragraph aligned when entering "
-					"protected mode (seg=%d)", seg);
-	}
-
-	vmcs_write16(sf->selector, var.selector);
-	vmcs_writel(sf->base, var.base);
-	vmcs_write32(sf->limit, var.limit);
-	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
-}
-
-static void enter_rmode(struct kvm_vcpu *vcpu)
-{
-	unsigned long flags;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct kvm_vmx *kvm_vmx = to_kvm_vmx(vcpu->kvm);
-
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
-	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
-
-	vmx->rmode.vm86_active = 1;
-
-	/*
-	 * Very old userspace does not call KVM_SET_TSS_ADDR before entering
-	 * vcpu. Warn the user that an update is overdue.
-	 */
-	if (!kvm_vmx->tss_addr)
-		printk_once(KERN_WARNING "kvm: KVM_SET_TSS_ADDR need to be "
-			     "called before entering vcpu\n");
-
-	vmx_segment_cache_clear(vmx);
-
-	vmcs_writel(GUEST_TR_BASE, kvm_vmx->tss_addr);
-	vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
-	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
-
-	flags = vmcs_readl(GUEST_RFLAGS);
-	vmx->rmode.save_rflags = flags;
-
-	flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
-
-	vmcs_writel(GUEST_RFLAGS, flags);
-	vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME);
-	update_exception_bitmap(vcpu);
-
-	fix_rmode_seg(VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
-	fix_rmode_seg(VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
-	fix_rmode_seg(VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
-	fix_rmode_seg(VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
-	fix_rmode_seg(VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
-	fix_rmode_seg(VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
-
-	kvm_mmu_reset_context(vcpu);
-}
-
-static void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER);
-
-	if (!msr)
-		return;
-
-	vcpu->arch.efer = efer;
-	if (efer & EFER_LMA) {
-		vm_entry_controls_setbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
-		msr->data = efer;
-	} else {
-		vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
-
-		msr->data = efer & ~EFER_LME;
-	}
-	setup_msrs(vmx);
-}
-
-#ifdef CONFIG_X86_64
-
-static void enter_lmode(struct kvm_vcpu *vcpu)
-{
-	u32 guest_tr_ar;
-
-	vmx_segment_cache_clear(to_vmx(vcpu));
-
-	guest_tr_ar = vmcs_read32(GUEST_TR_AR_BYTES);
-	if ((guest_tr_ar & VMX_AR_TYPE_MASK) != VMX_AR_TYPE_BUSY_64_TSS) {
-		pr_debug_ratelimited("%s: tss fixup for long mode. \n",
-				     __func__);
-		vmcs_write32(GUEST_TR_AR_BYTES,
-			     (guest_tr_ar & ~VMX_AR_TYPE_MASK)
-			     | VMX_AR_TYPE_BUSY_64_TSS);
-	}
-	vmx_set_efer(vcpu, vcpu->arch.efer | EFER_LMA);
-}
-
-static void exit_lmode(struct kvm_vcpu *vcpu)
-{
-	vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
-	vmx_set_efer(vcpu, vcpu->arch.efer & ~EFER_LMA);
-}
-
-#endif
-
-static inline void __vmx_flush_tlb(struct kvm_vcpu *vcpu, int vpid,
-				bool invalidate_gpa)
-{
-	if (enable_ept && (invalidate_gpa || !enable_vpid)) {
-		if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
-			return;
-		ept_sync_context(construct_eptp(vcpu,
-						vcpu->arch.mmu->root_hpa));
-	} else {
-		vpid_sync_context(vpid);
-	}
-}
-
-static void vmx_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
-{
-	__vmx_flush_tlb(vcpu, to_vmx(vcpu)->vpid, invalidate_gpa);
-}
-
-static void vmx_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t addr)
-{
-	int vpid = to_vmx(vcpu)->vpid;
-
-	if (!vpid_sync_vcpu_addr(vpid, addr))
-		vpid_sync_context(vpid);
-
-	/*
-	 * If VPIDs are not supported or enabled, then the above is a no-op.
-	 * But we don't really need a TLB flush in that case anyway, because
-	 * each VM entry/exit includes an implicit flush when VPID is 0.
-	 */
-}
-
-static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu)
-{
-	ulong cr0_guest_owned_bits = vcpu->arch.cr0_guest_owned_bits;
-
-	vcpu->arch.cr0 &= ~cr0_guest_owned_bits;
-	vcpu->arch.cr0 |= vmcs_readl(GUEST_CR0) & cr0_guest_owned_bits;
-}
-
-static void vmx_decache_cr3(struct kvm_vcpu *vcpu)
-{
-	if (enable_unrestricted_guest || (enable_ept && is_paging(vcpu)))
-		vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
-	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
-}
-
-static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
-{
-	ulong cr4_guest_owned_bits = vcpu->arch.cr4_guest_owned_bits;
-
-	vcpu->arch.cr4 &= ~cr4_guest_owned_bits;
-	vcpu->arch.cr4 |= vmcs_readl(GUEST_CR4) & cr4_guest_owned_bits;
-}
-
-static void ept_load_pdptrs(struct kvm_vcpu *vcpu)
-{
-	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
-
-	if (!test_bit(VCPU_EXREG_PDPTR,
-		      (unsigned long *)&vcpu->arch.regs_dirty))
-		return;
-
-	if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
-		vmcs_write64(GUEST_PDPTR0, mmu->pdptrs[0]);
-		vmcs_write64(GUEST_PDPTR1, mmu->pdptrs[1]);
-		vmcs_write64(GUEST_PDPTR2, mmu->pdptrs[2]);
-		vmcs_write64(GUEST_PDPTR3, mmu->pdptrs[3]);
-	}
-}
-
-static void ept_save_pdptrs(struct kvm_vcpu *vcpu)
-{
-	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
-
-	if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
-		mmu->pdptrs[0] = vmcs_read64(GUEST_PDPTR0);
-		mmu->pdptrs[1] = vmcs_read64(GUEST_PDPTR1);
-		mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
-		mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
-	}
-
-	__set_bit(VCPU_EXREG_PDPTR,
-		  (unsigned long *)&vcpu->arch.regs_avail);
-	__set_bit(VCPU_EXREG_PDPTR,
-		  (unsigned long *)&vcpu->arch.regs_dirty);
-}
-
-static bool nested_guest_cr0_valid(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr0_fixed0;
-	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr0_fixed1;
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	if (to_vmx(vcpu)->nested.msrs.secondary_ctls_high &
-		SECONDARY_EXEC_UNRESTRICTED_GUEST &&
-	    nested_cpu_has2(vmcs12, SECONDARY_EXEC_UNRESTRICTED_GUEST))
-		fixed0 &= ~(X86_CR0_PE | X86_CR0_PG);
-
-	return fixed_bits_valid(val, fixed0, fixed1);
-}
-
-static bool nested_host_cr0_valid(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr0_fixed0;
-	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr0_fixed1;
-
-	return fixed_bits_valid(val, fixed0, fixed1);
-}
-
-static bool nested_cr4_valid(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr4_fixed0;
-	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr4_fixed1;
-
-	return fixed_bits_valid(val, fixed0, fixed1);
-}
-
-/* No difference in the restrictions on guest and host CR4 in VMX operation. */
-#define nested_guest_cr4_valid	nested_cr4_valid
-#define nested_host_cr4_valid	nested_cr4_valid
-
-static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
-
-static void ept_update_paging_mode_cr0(unsigned long *hw_cr0,
-					unsigned long cr0,
-					struct kvm_vcpu *vcpu)
-{
-	if (!test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail))
-		vmx_decache_cr3(vcpu);
-	if (!(cr0 & X86_CR0_PG)) {
-		/* From paging/starting to nonpaging */
-		vmcs_write32(CPU_BASED_VM_EXEC_CONTROL,
-			     vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) |
-			     (CPU_BASED_CR3_LOAD_EXITING |
-			      CPU_BASED_CR3_STORE_EXITING));
-		vcpu->arch.cr0 = cr0;
-		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
-	} else if (!is_paging(vcpu)) {
-		/* From nonpaging to paging */
-		vmcs_write32(CPU_BASED_VM_EXEC_CONTROL,
-			     vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) &
-			     ~(CPU_BASED_CR3_LOAD_EXITING |
-			       CPU_BASED_CR3_STORE_EXITING));
-		vcpu->arch.cr0 = cr0;
-		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
-	}
-
-	if (!(cr0 & X86_CR0_WP))
-		*hw_cr0 &= ~X86_CR0_WP;
-}
-
-static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long hw_cr0;
-
-	hw_cr0 = (cr0 & ~KVM_VM_CR0_ALWAYS_OFF);
-	if (enable_unrestricted_guest)
-		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST;
-	else {
-		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON;
-
-		if (vmx->rmode.vm86_active && (cr0 & X86_CR0_PE))
-			enter_pmode(vcpu);
-
-		if (!vmx->rmode.vm86_active && !(cr0 & X86_CR0_PE))
-			enter_rmode(vcpu);
-	}
-
-#ifdef CONFIG_X86_64
-	if (vcpu->arch.efer & EFER_LME) {
-		if (!is_paging(vcpu) && (cr0 & X86_CR0_PG))
-			enter_lmode(vcpu);
-		if (is_paging(vcpu) && !(cr0 & X86_CR0_PG))
-			exit_lmode(vcpu);
-	}
-#endif
-
-	if (enable_ept && !enable_unrestricted_guest)
-		ept_update_paging_mode_cr0(&hw_cr0, cr0, vcpu);
-
-	vmcs_writel(CR0_READ_SHADOW, cr0);
-	vmcs_writel(GUEST_CR0, hw_cr0);
-	vcpu->arch.cr0 = cr0;
-
-	/* depends on vcpu->arch.cr0 to be set to a new value */
-	vmx->emulation_required = emulation_required(vcpu);
-}
-
-static int get_ept_level(struct kvm_vcpu *vcpu)
-{
-	if (cpu_has_vmx_ept_5levels() && (cpuid_maxphyaddr(vcpu) > 48))
-		return 5;
-	return 4;
-}
-
-static u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa)
-{
-	u64 eptp = VMX_EPTP_MT_WB;
-
-	eptp |= (get_ept_level(vcpu) == 5) ? VMX_EPTP_PWL_5 : VMX_EPTP_PWL_4;
-
-	if (enable_ept_ad_bits &&
-	    (!is_guest_mode(vcpu) || nested_ept_ad_enabled(vcpu)))
-		eptp |= VMX_EPTP_AD_ENABLE_BIT;
-	eptp |= (root_hpa & PAGE_MASK);
-
-	return eptp;
-}
-
-static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
-{
-	struct kvm *kvm = vcpu->kvm;
-	unsigned long guest_cr3;
-	u64 eptp;
-
-	guest_cr3 = cr3;
-	if (enable_ept) {
-		eptp = construct_eptp(vcpu, cr3);
-		vmcs_write64(EPT_POINTER, eptp);
-
-		if (kvm_x86_ops->tlb_remote_flush) {
-			spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
-			to_vmx(vcpu)->ept_pointer = eptp;
-			to_kvm_vmx(kvm)->ept_pointers_match
-				= EPT_POINTERS_CHECK;
-			spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
-		}
-
-		if (enable_unrestricted_guest || is_paging(vcpu) ||
-		    is_guest_mode(vcpu))
-			guest_cr3 = kvm_read_cr3(vcpu);
-		else
-			guest_cr3 = to_kvm_vmx(kvm)->ept_identity_map_addr;
-		ept_load_pdptrs(vcpu);
-	}
-
-	vmcs_writel(GUEST_CR3, guest_cr3);
-}
-
-static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
-{
-	/*
-	 * Pass through host's Machine Check Enable value to hw_cr4, which
-	 * is in force while we are in guest mode.  Do not let guests control
-	 * this bit, even if host CR4.MCE == 0.
-	 */
-	unsigned long hw_cr4;
-
-	hw_cr4 = (cr4_read_shadow() & X86_CR4_MCE) | (cr4 & ~X86_CR4_MCE);
-	if (enable_unrestricted_guest)
-		hw_cr4 |= KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST;
-	else if (to_vmx(vcpu)->rmode.vm86_active)
-		hw_cr4 |= KVM_RMODE_VM_CR4_ALWAYS_ON;
-	else
-		hw_cr4 |= KVM_PMODE_VM_CR4_ALWAYS_ON;
-
-	if (!boot_cpu_has(X86_FEATURE_UMIP) && vmx_umip_emulated()) {
-		if (cr4 & X86_CR4_UMIP) {
-			vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
-				SECONDARY_EXEC_DESC);
-			hw_cr4 &= ~X86_CR4_UMIP;
-		} else if (!is_guest_mode(vcpu) ||
-			!nested_cpu_has2(get_vmcs12(vcpu), SECONDARY_EXEC_DESC))
-			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
-					SECONDARY_EXEC_DESC);
-	}
-
-	if (cr4 & X86_CR4_VMXE) {
-		/*
-		 * To use VMXON (and later other VMX instructions), a guest
-		 * must first be able to turn on cr4.VMXE (see handle_vmon()).
-		 * So basically the check on whether to allow nested VMX
-		 * is here.  We operate under the default treatment of SMM,
-		 * so VMX cannot be enabled under SMM.
-		 */
-		if (!nested_vmx_allowed(vcpu) || is_smm(vcpu))
-			return 1;
-	}
-
-	if (to_vmx(vcpu)->nested.vmxon && !nested_cr4_valid(vcpu, cr4))
-		return 1;
-
-	vcpu->arch.cr4 = cr4;
-
-	if (!enable_unrestricted_guest) {
-		if (enable_ept) {
-			if (!is_paging(vcpu)) {
-				hw_cr4 &= ~X86_CR4_PAE;
-				hw_cr4 |= X86_CR4_PSE;
-			} else if (!(cr4 & X86_CR4_PAE)) {
-				hw_cr4 &= ~X86_CR4_PAE;
-			}
-		}
-
-		/*
-		 * SMEP/SMAP/PKU is disabled if CPU is in non-paging mode in
-		 * hardware.  To emulate this behavior, SMEP/SMAP/PKU needs
-		 * to be manually disabled when guest switches to non-paging
-		 * mode.
-		 *
-		 * If !enable_unrestricted_guest, the CPU is always running
-		 * with CR0.PG=1 and CR4 needs to be modified.
-		 * If enable_unrestricted_guest, the CPU automatically
-		 * disables SMEP/SMAP/PKU when the guest sets CR0.PG=0.
-		 */
-		if (!is_paging(vcpu))
-			hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE);
-	}
-
-	vmcs_writel(CR4_READ_SHADOW, cr4);
-	vmcs_writel(GUEST_CR4, hw_cr4);
-	return 0;
-}
-
-static void vmx_get_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 ar;
-
-	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
-		*var = vmx->rmode.segs[seg];
-		if (seg == VCPU_SREG_TR
-		    || var->selector == vmx_read_guest_seg_selector(vmx, seg))
-			return;
-		var->base = vmx_read_guest_seg_base(vmx, seg);
-		var->selector = vmx_read_guest_seg_selector(vmx, seg);
-		return;
-	}
-	var->base = vmx_read_guest_seg_base(vmx, seg);
-	var->limit = vmx_read_guest_seg_limit(vmx, seg);
-	var->selector = vmx_read_guest_seg_selector(vmx, seg);
-	ar = vmx_read_guest_seg_ar(vmx, seg);
-	var->unusable = (ar >> 16) & 1;
-	var->type = ar & 15;
-	var->s = (ar >> 4) & 1;
-	var->dpl = (ar >> 5) & 3;
-	/*
-	 * Some userspaces do not preserve unusable property. Since usable
-	 * segment has to be present according to VMX spec we can use present
-	 * property to amend userspace bug by making unusable segment always
-	 * nonpresent. vmx_segment_access_rights() already marks nonpresent
-	 * segment as unusable.
-	 */
-	var->present = !var->unusable;
-	var->avl = (ar >> 12) & 1;
-	var->l = (ar >> 13) & 1;
-	var->db = (ar >> 14) & 1;
-	var->g = (ar >> 15) & 1;
-}
-
-static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
-{
-	struct kvm_segment s;
-
-	if (to_vmx(vcpu)->rmode.vm86_active) {
-		vmx_get_segment(vcpu, &s, seg);
-		return s.base;
-	}
-	return vmx_read_guest_seg_base(to_vmx(vcpu), seg);
-}
-
-static int vmx_get_cpl(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (unlikely(vmx->rmode.vm86_active))
-		return 0;
-	else {
-		int ar = vmx_read_guest_seg_ar(vmx, VCPU_SREG_SS);
-		return VMX_AR_DPL(ar);
-	}
-}
-
-static u32 vmx_segment_access_rights(struct kvm_segment *var)
-{
-	u32 ar;
-
-	if (var->unusable || !var->present)
-		ar = 1 << 16;
-	else {
-		ar = var->type & 15;
-		ar |= (var->s & 1) << 4;
-		ar |= (var->dpl & 3) << 5;
-		ar |= (var->present & 1) << 7;
-		ar |= (var->avl & 1) << 12;
-		ar |= (var->l & 1) << 13;
-		ar |= (var->db & 1) << 14;
-		ar |= (var->g & 1) << 15;
-	}
-
-	return ar;
-}
-
-static void vmx_set_segment(struct kvm_vcpu *vcpu,
-			    struct kvm_segment *var, int seg)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-
-	vmx_segment_cache_clear(vmx);
-
-	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
-		vmx->rmode.segs[seg] = *var;
-		if (seg == VCPU_SREG_TR)
-			vmcs_write16(sf->selector, var->selector);
-		else if (var->s)
-			fix_rmode_seg(seg, &vmx->rmode.segs[seg]);
-		goto out;
-	}
-
-	vmcs_writel(sf->base, var->base);
-	vmcs_write32(sf->limit, var->limit);
-	vmcs_write16(sf->selector, var->selector);
-
-	/*
-	 *   Fix the "Accessed" bit in AR field of segment registers for older
-	 * qemu binaries.
-	 *   IA32 arch specifies that at the time of processor reset the
-	 * "Accessed" bit in the AR field of segment registers is 1. And qemu
-	 * is setting it to 0 in the userland code. This causes invalid guest
-	 * state vmexit when "unrestricted guest" mode is turned on.
-	 *    Fix for this setup issue in cpu_reset is being pushed in the qemu
-	 * tree. Newer qemu binaries with that qemu fix would not need this
-	 * kvm hack.
-	 */
-	if (enable_unrestricted_guest && (seg != VCPU_SREG_LDTR))
-		var->type |= 0x1; /* Accessed */
-
-	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(var));
-
-out:
-	vmx->emulation_required = emulation_required(vcpu);
-}
-
-static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
-{
-	u32 ar = vmx_read_guest_seg_ar(to_vmx(vcpu), VCPU_SREG_CS);
-
-	*db = (ar >> 14) & 1;
-	*l = (ar >> 13) & 1;
-}
-
-static void vmx_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
-{
-	dt->size = vmcs_read32(GUEST_IDTR_LIMIT);
-	dt->address = vmcs_readl(GUEST_IDTR_BASE);
-}
-
-static void vmx_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
-{
-	vmcs_write32(GUEST_IDTR_LIMIT, dt->size);
-	vmcs_writel(GUEST_IDTR_BASE, dt->address);
-}
-
-static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
-{
-	dt->size = vmcs_read32(GUEST_GDTR_LIMIT);
-	dt->address = vmcs_readl(GUEST_GDTR_BASE);
-}
-
-static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
-{
-	vmcs_write32(GUEST_GDTR_LIMIT, dt->size);
-	vmcs_writel(GUEST_GDTR_BASE, dt->address);
-}
-
-static bool rmode_segment_valid(struct kvm_vcpu *vcpu, int seg)
-{
-	struct kvm_segment var;
-	u32 ar;
-
-	vmx_get_segment(vcpu, &var, seg);
-	var.dpl = 0x3;
-	if (seg == VCPU_SREG_CS)
-		var.type = 0x3;
-	ar = vmx_segment_access_rights(&var);
-
-	if (var.base != (var.selector << 4))
-		return false;
-	if (var.limit != 0xffff)
-		return false;
-	if (ar != 0xf3)
-		return false;
-
-	return true;
-}
-
-static bool code_segment_valid(struct kvm_vcpu *vcpu)
-{
-	struct kvm_segment cs;
-	unsigned int cs_rpl;
-
-	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
-	cs_rpl = cs.selector & SEGMENT_RPL_MASK;
-
-	if (cs.unusable)
-		return false;
-	if (~cs.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_ACCESSES_MASK))
-		return false;
-	if (!cs.s)
-		return false;
-	if (cs.type & VMX_AR_TYPE_WRITEABLE_MASK) {
-		if (cs.dpl > cs_rpl)
-			return false;
-	} else {
-		if (cs.dpl != cs_rpl)
-			return false;
-	}
-	if (!cs.present)
-		return false;
-
-	/* TODO: Add Reserved field check, this'll require a new member in the kvm_segment_field structure */
-	return true;
-}
-
-static bool stack_segment_valid(struct kvm_vcpu *vcpu)
-{
-	struct kvm_segment ss;
-	unsigned int ss_rpl;
-
-	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
-	ss_rpl = ss.selector & SEGMENT_RPL_MASK;
-
-	if (ss.unusable)
-		return true;
-	if (ss.type != 3 && ss.type != 7)
-		return false;
-	if (!ss.s)
-		return false;
-	if (ss.dpl != ss_rpl) /* DPL != RPL */
-		return false;
-	if (!ss.present)
-		return false;
-
-	return true;
-}
-
-static bool data_segment_valid(struct kvm_vcpu *vcpu, int seg)
-{
-	struct kvm_segment var;
-	unsigned int rpl;
-
-	vmx_get_segment(vcpu, &var, seg);
-	rpl = var.selector & SEGMENT_RPL_MASK;
-
-	if (var.unusable)
-		return true;
-	if (!var.s)
-		return false;
-	if (!var.present)
-		return false;
-	if (~var.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_WRITEABLE_MASK)) {
-		if (var.dpl < rpl) /* DPL < RPL */
-			return false;
-	}
-
-	/* TODO: Add other members to kvm_segment_field to allow checking for other access
-	 * rights flags
-	 */
-	return true;
-}
-
-static bool tr_valid(struct kvm_vcpu *vcpu)
-{
-	struct kvm_segment tr;
-
-	vmx_get_segment(vcpu, &tr, VCPU_SREG_TR);
-
-	if (tr.unusable)
-		return false;
-	if (tr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
-		return false;
-	if (tr.type != 3 && tr.type != 11) /* TODO: Check if guest is in IA32e mode */
-		return false;
-	if (!tr.present)
-		return false;
-
-	return true;
-}
-
-static bool ldtr_valid(struct kvm_vcpu *vcpu)
-{
-	struct kvm_segment ldtr;
-
-	vmx_get_segment(vcpu, &ldtr, VCPU_SREG_LDTR);
-
-	if (ldtr.unusable)
-		return true;
-	if (ldtr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
-		return false;
-	if (ldtr.type != 2)
-		return false;
-	if (!ldtr.present)
-		return false;
-
-	return true;
-}
-
-static bool cs_ss_rpl_check(struct kvm_vcpu *vcpu)
-{
-	struct kvm_segment cs, ss;
-
-	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
-	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
-
-	return ((cs.selector & SEGMENT_RPL_MASK) ==
-		 (ss.selector & SEGMENT_RPL_MASK));
-}
-
-/*
- * Check if guest state is valid. Returns true if valid, false if
- * not.
- * We assume that registers are always usable
- */
-static bool guest_state_valid(struct kvm_vcpu *vcpu)
-{
-	if (enable_unrestricted_guest)
-		return true;
-
-	/* real mode guest state checks */
-	if (!is_protmode(vcpu) || (vmx_get_rflags(vcpu) & X86_EFLAGS_VM)) {
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_CS))
-			return false;
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_SS))
-			return false;
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_DS))
-			return false;
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_ES))
-			return false;
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_FS))
-			return false;
-		if (!rmode_segment_valid(vcpu, VCPU_SREG_GS))
-			return false;
-	} else {
-	/* protected mode guest state checks */
-		if (!cs_ss_rpl_check(vcpu))
-			return false;
-		if (!code_segment_valid(vcpu))
-			return false;
-		if (!stack_segment_valid(vcpu))
-			return false;
-		if (!data_segment_valid(vcpu, VCPU_SREG_DS))
-			return false;
-		if (!data_segment_valid(vcpu, VCPU_SREG_ES))
-			return false;
-		if (!data_segment_valid(vcpu, VCPU_SREG_FS))
-			return false;
-		if (!data_segment_valid(vcpu, VCPU_SREG_GS))
-			return false;
-		if (!tr_valid(vcpu))
-			return false;
-		if (!ldtr_valid(vcpu))
-			return false;
-	}
-	/* TODO:
-	 * - Add checks on RIP
-	 * - Add checks on RFLAGS
-	 */
-
-	return true;
-}
-
-static bool page_address_valid(struct kvm_vcpu *vcpu, gpa_t gpa)
-{
-	return PAGE_ALIGNED(gpa) && !(gpa >> cpuid_maxphyaddr(vcpu));
-}
-
-static int init_rmode_tss(struct kvm *kvm)
-{
-	gfn_t fn;
-	u16 data = 0;
-	int idx, r;
-
-	idx = srcu_read_lock(&kvm->srcu);
-	fn = to_kvm_vmx(kvm)->tss_addr >> PAGE_SHIFT;
-	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
-	if (r < 0)
-		goto out;
-	data = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE;
-	r = kvm_write_guest_page(kvm, fn++, &data,
-			TSS_IOPB_BASE_OFFSET, sizeof(u16));
-	if (r < 0)
-		goto out;
-	r = kvm_clear_guest_page(kvm, fn++, 0, PAGE_SIZE);
-	if (r < 0)
-		goto out;
-	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
-	if (r < 0)
-		goto out;
-	data = ~0;
-	r = kvm_write_guest_page(kvm, fn, &data,
-				 RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1,
-				 sizeof(u8));
-out:
-	srcu_read_unlock(&kvm->srcu, idx);
-	return r;
-}
-
-static int init_rmode_identity_map(struct kvm *kvm)
-{
-	struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
-	int i, idx, r = 0;
-	kvm_pfn_t identity_map_pfn;
-	u32 tmp;
-
-	/* Protect kvm_vmx->ept_identity_pagetable_done. */
-	mutex_lock(&kvm->slots_lock);
-
-	if (likely(kvm_vmx->ept_identity_pagetable_done))
-		goto out2;
-
-	if (!kvm_vmx->ept_identity_map_addr)
-		kvm_vmx->ept_identity_map_addr = VMX_EPT_IDENTITY_PAGETABLE_ADDR;
-	identity_map_pfn = kvm_vmx->ept_identity_map_addr >> PAGE_SHIFT;
-
-	r = __x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT,
-				    kvm_vmx->ept_identity_map_addr, PAGE_SIZE);
-	if (r < 0)
-		goto out2;
-
-	idx = srcu_read_lock(&kvm->srcu);
-	r = kvm_clear_guest_page(kvm, identity_map_pfn, 0, PAGE_SIZE);
-	if (r < 0)
-		goto out;
-	/* Set up identity-mapping pagetable for EPT in real mode */
-	for (i = 0; i < PT32_ENT_PER_PAGE; i++) {
-		tmp = (i << 22) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
-			_PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_PSE);
-		r = kvm_write_guest_page(kvm, identity_map_pfn,
-				&tmp, i * sizeof(tmp), sizeof(tmp));
-		if (r < 0)
-			goto out;
-	}
-	kvm_vmx->ept_identity_pagetable_done = true;
-
-out:
-	srcu_read_unlock(&kvm->srcu, idx);
-
-out2:
-	mutex_unlock(&kvm->slots_lock);
-	return r;
-}
-
-static void seg_setup(int seg)
-{
-	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
-	unsigned int ar;
-
-	vmcs_write16(sf->selector, 0);
-	vmcs_writel(sf->base, 0);
-	vmcs_write32(sf->limit, 0xffff);
-	ar = 0x93;
-	if (seg == VCPU_SREG_CS)
-		ar |= 0x08; /* code segment */
-
-	vmcs_write32(sf->ar_bytes, ar);
-}
-
-static int alloc_apic_access_page(struct kvm *kvm)
-{
-	struct page *page;
-	int r = 0;
-
-	mutex_lock(&kvm->slots_lock);
-	if (kvm->arch.apic_access_page_done)
-		goto out;
-	r = __x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT,
-				    APIC_DEFAULT_PHYS_BASE, PAGE_SIZE);
-	if (r)
-		goto out;
-
-	page = gfn_to_page(kvm, APIC_DEFAULT_PHYS_BASE >> PAGE_SHIFT);
-	if (is_error_page(page)) {
-		r = -EFAULT;
-		goto out;
-	}
-
-	/*
-	 * Do not pin the page in memory, so that memory hot-unplug
-	 * is able to migrate it.
-	 */
-	put_page(page);
-	kvm->arch.apic_access_page_done = true;
-out:
-	mutex_unlock(&kvm->slots_lock);
-	return r;
-}
-
-static int allocate_vpid(void)
-{
-	int vpid;
-
-	if (!enable_vpid)
-		return 0;
-	spin_lock(&vmx_vpid_lock);
-	vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
-	if (vpid < VMX_NR_VPIDS)
-		__set_bit(vpid, vmx_vpid_bitmap);
-	else
-		vpid = 0;
-	spin_unlock(&vmx_vpid_lock);
-	return vpid;
-}
-
-static void free_vpid(int vpid)
-{
-	if (!enable_vpid || vpid == 0)
-		return;
-	spin_lock(&vmx_vpid_lock);
-	__clear_bit(vpid, vmx_vpid_bitmap);
-	spin_unlock(&vmx_vpid_lock);
-}
-
-static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
-							  u32 msr, int type)
-{
-	int f = sizeof(unsigned long);
-
-	if (!cpu_has_vmx_msr_bitmap())
-		return;
-
-	if (static_branch_unlikely(&enable_evmcs))
-		evmcs_touch_msr_bitmap();
-
-	/*
-	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
-	 * have the write-low and read-high bitmap offsets the wrong way round.
-	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
-	 */
-	if (msr <= 0x1fff) {
-		if (type & MSR_TYPE_R)
-			/* read-low */
-			__clear_bit(msr, msr_bitmap + 0x000 / f);
-
-		if (type & MSR_TYPE_W)
-			/* write-low */
-			__clear_bit(msr, msr_bitmap + 0x800 / f);
-
-	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
-		msr &= 0x1fff;
-		if (type & MSR_TYPE_R)
-			/* read-high */
-			__clear_bit(msr, msr_bitmap + 0x400 / f);
-
-		if (type & MSR_TYPE_W)
-			/* write-high */
-			__clear_bit(msr, msr_bitmap + 0xc00 / f);
-
-	}
-}
-
-static __always_inline void vmx_enable_intercept_for_msr(unsigned long *msr_bitmap,
-							 u32 msr, int type)
-{
-	int f = sizeof(unsigned long);
-
-	if (!cpu_has_vmx_msr_bitmap())
-		return;
-
-	if (static_branch_unlikely(&enable_evmcs))
-		evmcs_touch_msr_bitmap();
-
-	/*
-	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
-	 * have the write-low and read-high bitmap offsets the wrong way round.
-	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
-	 */
-	if (msr <= 0x1fff) {
-		if (type & MSR_TYPE_R)
-			/* read-low */
-			__set_bit(msr, msr_bitmap + 0x000 / f);
-
-		if (type & MSR_TYPE_W)
-			/* write-low */
-			__set_bit(msr, msr_bitmap + 0x800 / f);
-
-	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
-		msr &= 0x1fff;
-		if (type & MSR_TYPE_R)
-			/* read-high */
-			__set_bit(msr, msr_bitmap + 0x400 / f);
-
-		if (type & MSR_TYPE_W)
-			/* write-high */
-			__set_bit(msr, msr_bitmap + 0xc00 / f);
-
-	}
-}
-
-static __always_inline void vmx_set_intercept_for_msr(unsigned long *msr_bitmap,
-			     			      u32 msr, int type, bool value)
-{
-	if (value)
-		vmx_enable_intercept_for_msr(msr_bitmap, msr, type);
-	else
-		vmx_disable_intercept_for_msr(msr_bitmap, msr, type);
-}
-
-/*
- * If a msr is allowed by L0, we should check whether it is allowed by L1.
- * The corresponding bit will be cleared unless both of L0 and L1 allow it.
- */
-static void nested_vmx_disable_intercept_for_msr(unsigned long *msr_bitmap_l1,
-					       unsigned long *msr_bitmap_nested,
-					       u32 msr, int type)
-{
-	int f = sizeof(unsigned long);
-
-	/*
-	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
-	 * have the write-low and read-high bitmap offsets the wrong way round.
-	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
-	 */
-	if (msr <= 0x1fff) {
-		if (type & MSR_TYPE_R &&
-		   !test_bit(msr, msr_bitmap_l1 + 0x000 / f))
-			/* read-low */
-			__clear_bit(msr, msr_bitmap_nested + 0x000 / f);
-
-		if (type & MSR_TYPE_W &&
-		   !test_bit(msr, msr_bitmap_l1 + 0x800 / f))
-			/* write-low */
-			__clear_bit(msr, msr_bitmap_nested + 0x800 / f);
-
-	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
-		msr &= 0x1fff;
-		if (type & MSR_TYPE_R &&
-		   !test_bit(msr, msr_bitmap_l1 + 0x400 / f))
-			/* read-high */
-			__clear_bit(msr, msr_bitmap_nested + 0x400 / f);
-
-		if (type & MSR_TYPE_W &&
-		   !test_bit(msr, msr_bitmap_l1 + 0xc00 / f))
-			/* write-high */
-			__clear_bit(msr, msr_bitmap_nested + 0xc00 / f);
-
-	}
-}
-
-static u8 vmx_msr_bitmap_mode(struct kvm_vcpu *vcpu)
-{
-	u8 mode = 0;
-
-	if (cpu_has_secondary_exec_ctrls() &&
-	    (vmcs_read32(SECONDARY_VM_EXEC_CONTROL) &
-	     SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE)) {
-		mode |= MSR_BITMAP_MODE_X2APIC;
-		if (enable_apicv && kvm_vcpu_apicv_active(vcpu))
-			mode |= MSR_BITMAP_MODE_X2APIC_APICV;
-	}
-
-	return mode;
-}
-
-#define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4))
-
-static void vmx_update_msr_bitmap_x2apic(unsigned long *msr_bitmap,
-					 u8 mode)
-{
-	int msr;
-
-	for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
-		unsigned word = msr / BITS_PER_LONG;
-		msr_bitmap[word] = (mode & MSR_BITMAP_MODE_X2APIC_APICV) ? 0 : ~0;
-		msr_bitmap[word + (0x800 / sizeof(long))] = ~0;
-	}
-
-	if (mode & MSR_BITMAP_MODE_X2APIC) {
-		/*
-		 * TPR reads and writes can be virtualized even if virtual interrupt
-		 * delivery is not in use.
-		 */
-		vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TASKPRI), MSR_TYPE_RW);
-		if (mode & MSR_BITMAP_MODE_X2APIC_APICV) {
-			vmx_enable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TMCCT), MSR_TYPE_R);
-			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_EOI), MSR_TYPE_W);
-			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_SELF_IPI), MSR_TYPE_W);
-		}
-	}
-}
-
-static void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
-	u8 mode = vmx_msr_bitmap_mode(vcpu);
-	u8 changed = mode ^ vmx->msr_bitmap_mode;
-
-	if (!changed)
-		return;
-
-	if (changed & (MSR_BITMAP_MODE_X2APIC | MSR_BITMAP_MODE_X2APIC_APICV))
-		vmx_update_msr_bitmap_x2apic(msr_bitmap, mode);
-
-	vmx->msr_bitmap_mode = mode;
-}
-
-static bool vmx_get_enable_apicv(struct kvm_vcpu *vcpu)
-{
-	return enable_apicv;
-}
-
-static void nested_mark_vmcs12_pages_dirty(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	gfn_t gfn;
-
-	/*
-	 * Don't need to mark the APIC access page dirty; it is never
-	 * written to by the CPU during APIC virtualization.
-	 */
-
-	if (nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW)) {
-		gfn = vmcs12->virtual_apic_page_addr >> PAGE_SHIFT;
-		kvm_vcpu_mark_page_dirty(vcpu, gfn);
-	}
-
-	if (nested_cpu_has_posted_intr(vmcs12)) {
-		gfn = vmcs12->posted_intr_desc_addr >> PAGE_SHIFT;
-		kvm_vcpu_mark_page_dirty(vcpu, gfn);
-	}
-}
-
-
-static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int max_irr;
-	void *vapic_page;
-	u16 status;
-
-	if (!vmx->nested.pi_desc || !vmx->nested.pi_pending)
-		return;
-
-	vmx->nested.pi_pending = false;
-	if (!pi_test_and_clear_on(vmx->nested.pi_desc))
-		return;
-
-	max_irr = find_last_bit((unsigned long *)vmx->nested.pi_desc->pir, 256);
-	if (max_irr != 256) {
-		vapic_page = kmap(vmx->nested.virtual_apic_page);
-		__kvm_apic_update_irr(vmx->nested.pi_desc->pir,
-			vapic_page, &max_irr);
-		kunmap(vmx->nested.virtual_apic_page);
-
-		status = vmcs_read16(GUEST_INTR_STATUS);
-		if ((u8)max_irr > ((u8)status & 0xff)) {
-			status &= ~0xff;
-			status |= (u8)max_irr;
-			vmcs_write16(GUEST_INTR_STATUS, status);
-		}
-	}
-
-	nested_mark_vmcs12_pages_dirty(vcpu);
-}
-
-static u8 vmx_get_rvi(void)
-{
-	return vmcs_read16(GUEST_INTR_STATUS) & 0xff;
-}
-
-static bool vmx_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	void *vapic_page;
-	u32 vppr;
-	int rvi;
-
-	if (WARN_ON_ONCE(!is_guest_mode(vcpu)) ||
-		!nested_cpu_has_vid(get_vmcs12(vcpu)) ||
-		WARN_ON_ONCE(!vmx->nested.virtual_apic_page))
-		return false;
-
-	rvi = vmx_get_rvi();
-
-	vapic_page = kmap(vmx->nested.virtual_apic_page);
-	vppr = *((u32 *)(vapic_page + APIC_PROCPRI));
-	kunmap(vmx->nested.virtual_apic_page);
-
-	return ((rvi & 0xf0) > (vppr & 0xf0));
-}
-
-static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
-						     bool nested)
-{
-#ifdef CONFIG_SMP
-	int pi_vec = nested ? POSTED_INTR_NESTED_VECTOR : POSTED_INTR_VECTOR;
-
-	if (vcpu->mode == IN_GUEST_MODE) {
-		/*
-		 * The vector of interrupt to be delivered to vcpu had
-		 * been set in PIR before this function.
-		 *
-		 * Following cases will be reached in this block, and
-		 * we always send a notification event in all cases as
-		 * explained below.
-		 *
-		 * Case 1: vcpu keeps in non-root mode. Sending a
-		 * notification event posts the interrupt to vcpu.
-		 *
-		 * Case 2: vcpu exits to root mode and is still
-		 * runnable. PIR will be synced to vIRR before the
-		 * next vcpu entry. Sending a notification event in
-		 * this case has no effect, as vcpu is not in root
-		 * mode.
-		 *
-		 * Case 3: vcpu exits to root mode and is blocked.
-		 * vcpu_block() has already synced PIR to vIRR and
-		 * never blocks vcpu if vIRR is not cleared. Therefore,
-		 * a blocked vcpu here does not wait for any requested
-		 * interrupts in PIR, and sending a notification event
-		 * which has no effect is safe here.
-		 */
-
-		apic->send_IPI_mask(get_cpu_mask(vcpu->cpu), pi_vec);
-		return true;
-	}
-#endif
-	return false;
-}
-
-static int vmx_deliver_nested_posted_interrupt(struct kvm_vcpu *vcpu,
-						int vector)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (is_guest_mode(vcpu) &&
-	    vector == vmx->nested.posted_intr_nv) {
-		/*
-		 * If a posted intr is not recognized by hardware,
-		 * we will accomplish it in the next vmentry.
-		 */
-		vmx->nested.pi_pending = true;
-		kvm_make_request(KVM_REQ_EVENT, vcpu);
-		/* the PIR and ON have been set by L1. */
-		if (!kvm_vcpu_trigger_posted_interrupt(vcpu, true))
-			kvm_vcpu_kick(vcpu);
-		return 0;
-	}
-	return -1;
-}
-/*
- * Send interrupt to vcpu via posted interrupt way.
- * 1. If target vcpu is running(non-root mode), send posted interrupt
- * notification to vcpu and hardware will sync PIR to vIRR atomically.
- * 2. If target vcpu isn't running(root mode), kick it to pick up the
- * interrupt from PIR in next vmentry.
- */
-static void vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int r;
-
-	r = vmx_deliver_nested_posted_interrupt(vcpu, vector);
-	if (!r)
-		return;
-
-	if (pi_test_and_set_pir(vector, &vmx->pi_desc))
-		return;
-
-	/* If a previous notification has sent the IPI, nothing to do.  */
-	if (pi_test_and_set_on(&vmx->pi_desc))
-		return;
-
-	if (!kvm_vcpu_trigger_posted_interrupt(vcpu, false))
-		kvm_vcpu_kick(vcpu);
-}
-
-/*
- * Set up the vmcs's constant host-state fields, i.e., host-state fields that
- * will not change in the lifetime of the guest.
- * Note that host-state that does change is set elsewhere. E.g., host-state
- * that is set differently for each CPU is set in vmx_vcpu_load(), not here.
- */
-static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
-{
-	u32 low32, high32;
-	unsigned long tmpl;
-	struct desc_ptr dt;
-	unsigned long cr0, cr3, cr4;
-
-	cr0 = read_cr0();
-	WARN_ON(cr0 & X86_CR0_TS);
-	vmcs_writel(HOST_CR0, cr0);  /* 22.2.3 */
-
-	/*
-	 * Save the most likely value for this task's CR3 in the VMCS.
-	 * We can't use __get_current_cr3_fast() because we're not atomic.
-	 */
-	cr3 = __read_cr3();
-	vmcs_writel(HOST_CR3, cr3);		/* 22.2.3  FIXME: shadow tables */
-	vmx->loaded_vmcs->host_state.cr3 = cr3;
-
-	/* Save the most likely value for this task's CR4 in the VMCS. */
-	cr4 = cr4_read_shadow();
-	vmcs_writel(HOST_CR4, cr4);			/* 22.2.3, 22.2.5 */
-	vmx->loaded_vmcs->host_state.cr4 = cr4;
-
-	vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS);  /* 22.2.4 */
-#ifdef CONFIG_X86_64
-	/*
-	 * Load null selectors, so we can avoid reloading them in
-	 * vmx_prepare_switch_to_host(), in case userspace uses
-	 * the null selectors too (the expected case).
-	 */
-	vmcs_write16(HOST_DS_SELECTOR, 0);
-	vmcs_write16(HOST_ES_SELECTOR, 0);
-#else
-	vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-	vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-#endif
-	vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
-	vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8);  /* 22.2.4 */
-
-	store_idt(&dt);
-	vmcs_writel(HOST_IDTR_BASE, dt.address);   /* 22.2.4 */
-	vmx->host_idt_base = dt.address;
-
-	vmcs_writel(HOST_RIP, vmx_return); /* 22.2.5 */
-
-	rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
-	vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
-	rdmsrl(MSR_IA32_SYSENTER_EIP, tmpl);
-	vmcs_writel(HOST_IA32_SYSENTER_EIP, tmpl);   /* 22.2.3 */
-
-	if (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT) {
-		rdmsr(MSR_IA32_CR_PAT, low32, high32);
-		vmcs_write64(HOST_IA32_PAT, low32 | ((u64) high32 << 32));
-	}
-
-	if (cpu_has_load_ia32_efer)
-		vmcs_write64(HOST_IA32_EFER, host_efer);
-}
-
-static void set_cr4_guest_host_mask(struct vcpu_vmx *vmx)
-{
-	vmx->vcpu.arch.cr4_guest_owned_bits = KVM_CR4_GUEST_OWNED_BITS;
-	if (enable_ept)
-		vmx->vcpu.arch.cr4_guest_owned_bits |= X86_CR4_PGE;
-	if (is_guest_mode(&vmx->vcpu))
-		vmx->vcpu.arch.cr4_guest_owned_bits &=
-			~get_vmcs12(&vmx->vcpu)->cr4_guest_host_mask;
-	vmcs_writel(CR4_GUEST_HOST_MASK, ~vmx->vcpu.arch.cr4_guest_owned_bits);
-}
-
-static u32 vmx_pin_based_exec_ctrl(struct vcpu_vmx *vmx)
-{
-	u32 pin_based_exec_ctrl = vmcs_config.pin_based_exec_ctrl;
-
-	if (!kvm_vcpu_apicv_active(&vmx->vcpu))
-		pin_based_exec_ctrl &= ~PIN_BASED_POSTED_INTR;
-
-	if (!enable_vnmi)
-		pin_based_exec_ctrl &= ~PIN_BASED_VIRTUAL_NMIS;
-
-	/* Enable the preemption timer dynamically */
-	pin_based_exec_ctrl &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
-	return pin_based_exec_ctrl;
-}
-
-static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx));
-	if (cpu_has_secondary_exec_ctrls()) {
-		if (kvm_vcpu_apicv_active(vcpu))
-			vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
-				      SECONDARY_EXEC_APIC_REGISTER_VIRT |
-				      SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-		else
-			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
-					SECONDARY_EXEC_APIC_REGISTER_VIRT |
-					SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-	}
-
-	if (cpu_has_vmx_msr_bitmap())
-		vmx_update_msr_bitmap(vcpu);
-}
-
-static u32 vmx_exec_control(struct vcpu_vmx *vmx)
-{
-	u32 exec_control = vmcs_config.cpu_based_exec_ctrl;
-
-	if (vmx->vcpu.arch.switch_db_regs & KVM_DEBUGREG_WONT_EXIT)
-		exec_control &= ~CPU_BASED_MOV_DR_EXITING;
-
-	if (!cpu_need_tpr_shadow(&vmx->vcpu)) {
-		exec_control &= ~CPU_BASED_TPR_SHADOW;
-#ifdef CONFIG_X86_64
-		exec_control |= CPU_BASED_CR8_STORE_EXITING |
-				CPU_BASED_CR8_LOAD_EXITING;
-#endif
-	}
-	if (!enable_ept)
-		exec_control |= CPU_BASED_CR3_STORE_EXITING |
-				CPU_BASED_CR3_LOAD_EXITING  |
-				CPU_BASED_INVLPG_EXITING;
-	if (kvm_mwait_in_guest(vmx->vcpu.kvm))
-		exec_control &= ~(CPU_BASED_MWAIT_EXITING |
-				CPU_BASED_MONITOR_EXITING);
-	if (kvm_hlt_in_guest(vmx->vcpu.kvm))
-		exec_control &= ~CPU_BASED_HLT_EXITING;
-	return exec_control;
-}
-
-static bool vmx_rdrand_supported(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_RDRAND_EXITING;
-}
-
-static bool vmx_rdseed_supported(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_RDSEED_EXITING;
-}
-
-static void vmx_compute_secondary_exec_control(struct vcpu_vmx *vmx)
-{
-	struct kvm_vcpu *vcpu = &vmx->vcpu;
-
-	u32 exec_control = vmcs_config.cpu_based_2nd_exec_ctrl;
-
-	if (!cpu_need_virtualize_apic_accesses(vcpu))
-		exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-	if (vmx->vpid == 0)
-		exec_control &= ~SECONDARY_EXEC_ENABLE_VPID;
-	if (!enable_ept) {
-		exec_control &= ~SECONDARY_EXEC_ENABLE_EPT;
-		enable_unrestricted_guest = 0;
-	}
-	if (!enable_unrestricted_guest)
-		exec_control &= ~SECONDARY_EXEC_UNRESTRICTED_GUEST;
-	if (kvm_pause_in_guest(vmx->vcpu.kvm))
-		exec_control &= ~SECONDARY_EXEC_PAUSE_LOOP_EXITING;
-	if (!kvm_vcpu_apicv_active(vcpu))
-		exec_control &= ~(SECONDARY_EXEC_APIC_REGISTER_VIRT |
-				  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
-	exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
-
-	/* SECONDARY_EXEC_DESC is enabled/disabled on writes to CR4.UMIP,
-	 * in vmx_set_cr4.  */
-	exec_control &= ~SECONDARY_EXEC_DESC;
-
-	/* SECONDARY_EXEC_SHADOW_VMCS is enabled when L1 executes VMPTRLD
-	   (handle_vmptrld).
-	   We can NOT enable shadow_vmcs here because we don't have yet
-	   a current VMCS12
-	*/
-	exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
-
-	if (!enable_pml)
-		exec_control &= ~SECONDARY_EXEC_ENABLE_PML;
-
-	if (vmx_xsaves_supported()) {
-		/* Exposing XSAVES only when XSAVE is exposed */
-		bool xsaves_enabled =
-			guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) &&
-			guest_cpuid_has(vcpu, X86_FEATURE_XSAVES);
-
-		if (!xsaves_enabled)
-			exec_control &= ~SECONDARY_EXEC_XSAVES;
-
-		if (nested) {
-			if (xsaves_enabled)
-				vmx->nested.msrs.secondary_ctls_high |=
-					SECONDARY_EXEC_XSAVES;
-			else
-				vmx->nested.msrs.secondary_ctls_high &=
-					~SECONDARY_EXEC_XSAVES;
-		}
-	}
-
-	if (vmx_rdtscp_supported()) {
-		bool rdtscp_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP);
-		if (!rdtscp_enabled)
-			exec_control &= ~SECONDARY_EXEC_RDTSCP;
-
-		if (nested) {
-			if (rdtscp_enabled)
-				vmx->nested.msrs.secondary_ctls_high |=
-					SECONDARY_EXEC_RDTSCP;
-			else
-				vmx->nested.msrs.secondary_ctls_high &=
-					~SECONDARY_EXEC_RDTSCP;
-		}
-	}
-
-	if (vmx_invpcid_supported()) {
-		/* Exposing INVPCID only when PCID is exposed */
-		bool invpcid_enabled =
-			guest_cpuid_has(vcpu, X86_FEATURE_INVPCID) &&
-			guest_cpuid_has(vcpu, X86_FEATURE_PCID);
-
-		if (!invpcid_enabled) {
-			exec_control &= ~SECONDARY_EXEC_ENABLE_INVPCID;
-			guest_cpuid_clear(vcpu, X86_FEATURE_INVPCID);
-		}
-
-		if (nested) {
-			if (invpcid_enabled)
-				vmx->nested.msrs.secondary_ctls_high |=
-					SECONDARY_EXEC_ENABLE_INVPCID;
-			else
-				vmx->nested.msrs.secondary_ctls_high &=
-					~SECONDARY_EXEC_ENABLE_INVPCID;
-		}
-	}
-
-	if (vmx_rdrand_supported()) {
-		bool rdrand_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDRAND);
-		if (rdrand_enabled)
-			exec_control &= ~SECONDARY_EXEC_RDRAND_EXITING;
-
-		if (nested) {
-			if (rdrand_enabled)
-				vmx->nested.msrs.secondary_ctls_high |=
-					SECONDARY_EXEC_RDRAND_EXITING;
-			else
-				vmx->nested.msrs.secondary_ctls_high &=
-					~SECONDARY_EXEC_RDRAND_EXITING;
-		}
-	}
-
-	if (vmx_rdseed_supported()) {
-		bool rdseed_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDSEED);
-		if (rdseed_enabled)
-			exec_control &= ~SECONDARY_EXEC_RDSEED_EXITING;
-
-		if (nested) {
-			if (rdseed_enabled)
-				vmx->nested.msrs.secondary_ctls_high |=
-					SECONDARY_EXEC_RDSEED_EXITING;
-			else
-				vmx->nested.msrs.secondary_ctls_high &=
-					~SECONDARY_EXEC_RDSEED_EXITING;
-		}
-	}
-
-	vmx->secondary_exec_control = exec_control;
-}
-
-static void ept_set_mmio_spte_mask(void)
-{
-	/*
-	 * EPT Misconfigurations can be generated if the value of bits 2:0
-	 * of an EPT paging-structure entry is 110b (write/execute).
-	 */
-	kvm_mmu_set_mmio_spte_mask(VMX_EPT_RWX_MASK,
-				   VMX_EPT_MISCONFIG_WX_VALUE);
-}
-
-#define VMX_XSS_EXIT_BITMAP 0
-/*
- * Sets up the vmcs for emulated real mode.
- */
-static void vmx_vcpu_setup(struct vcpu_vmx *vmx)
-{
-	int i;
-
-	if (enable_shadow_vmcs) {
-		/*
-		 * At vCPU creation, "VMWRITE to any supported field
-		 * in the VMCS" is supported, so use the more
-		 * permissive vmx_vmread_bitmap to specify both read
-		 * and write permissions for the shadow VMCS.
-		 */
-		vmcs_write64(VMREAD_BITMAP, __pa(vmx_vmread_bitmap));
-		vmcs_write64(VMWRITE_BITMAP, __pa(vmx_vmread_bitmap));
-	}
-	if (cpu_has_vmx_msr_bitmap())
-		vmcs_write64(MSR_BITMAP, __pa(vmx->vmcs01.msr_bitmap));
-
-	vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */
-
-	/* Control */
-	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx));
-	vmx->hv_deadline_tsc = -1;
-
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, vmx_exec_control(vmx));
-
-	if (cpu_has_secondary_exec_ctrls()) {
-		vmx_compute_secondary_exec_control(vmx);
-		vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
-			     vmx->secondary_exec_control);
-	}
-
-	if (kvm_vcpu_apicv_active(&vmx->vcpu)) {
-		vmcs_write64(EOI_EXIT_BITMAP0, 0);
-		vmcs_write64(EOI_EXIT_BITMAP1, 0);
-		vmcs_write64(EOI_EXIT_BITMAP2, 0);
-		vmcs_write64(EOI_EXIT_BITMAP3, 0);
-
-		vmcs_write16(GUEST_INTR_STATUS, 0);
-
-		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);
-		vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc)));
-	}
-
-	if (!kvm_pause_in_guest(vmx->vcpu.kvm)) {
-		vmcs_write32(PLE_GAP, ple_gap);
-		vmx->ple_window = ple_window;
-		vmx->ple_window_dirty = true;
-	}
-
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, 0);
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, 0);
-	vmcs_write32(CR3_TARGET_COUNT, 0);           /* 22.2.1 */
-
-	vmcs_write16(HOST_FS_SELECTOR, 0);            /* 22.2.4 */
-	vmcs_write16(HOST_GS_SELECTOR, 0);            /* 22.2.4 */
-	vmx_set_constant_host_state(vmx);
-	vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */
-	vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */
-
-	if (cpu_has_vmx_vmfunc())
-		vmcs_write64(VM_FUNCTION_CONTROL, 0);
-
-	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
-	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
-	vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
-	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
-	vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
-
-	if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT)
-		vmcs_write64(GUEST_IA32_PAT, vmx->vcpu.arch.pat);
-
-	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) {
-		u32 index = vmx_msr_index[i];
-		u32 data_low, data_high;
-		int j = vmx->nmsrs;
-
-		if (rdmsr_safe(index, &data_low, &data_high) < 0)
-			continue;
-		if (wrmsr_safe(index, data_low, data_high) < 0)
-			continue;
-		vmx->guest_msrs[j].index = i;
-		vmx->guest_msrs[j].data = 0;
-		vmx->guest_msrs[j].mask = -1ull;
-		++vmx->nmsrs;
-	}
-
-	vmx->arch_capabilities = kvm_get_arch_capabilities();
-
-	vm_exit_controls_init(vmx, vmcs_config.vmexit_ctrl);
-
-	/* 22.2.1, 20.8.1 */
-	vm_entry_controls_init(vmx, vmcs_config.vmentry_ctrl);
-
-	vmx->vcpu.arch.cr0_guest_owned_bits = X86_CR0_TS;
-	vmcs_writel(CR0_GUEST_HOST_MASK, ~X86_CR0_TS);
-
-	set_cr4_guest_host_mask(vmx);
-
-	if (vmx_xsaves_supported())
-		vmcs_write64(XSS_EXIT_BITMAP, VMX_XSS_EXIT_BITMAP);
-
-	if (enable_pml) {
-		vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
-		vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
-	}
-
-	if (cpu_has_vmx_encls_vmexit())
-		vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
-}
-
-static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct msr_data apic_base_msr;
-	u64 cr0;
-
-	vmx->rmode.vm86_active = 0;
-	vmx->spec_ctrl = 0;
-
-	vcpu->arch.microcode_version = 0x100000000ULL;
-	vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val();
-	kvm_set_cr8(vcpu, 0);
-
-	if (!init_event) {
-		apic_base_msr.data = APIC_DEFAULT_PHYS_BASE |
-				     MSR_IA32_APICBASE_ENABLE;
-		if (kvm_vcpu_is_reset_bsp(vcpu))
-			apic_base_msr.data |= MSR_IA32_APICBASE_BSP;
-		apic_base_msr.host_initiated = true;
-		kvm_set_apic_base(vcpu, &apic_base_msr);
-	}
-
-	vmx_segment_cache_clear(vmx);
-
-	seg_setup(VCPU_SREG_CS);
-	vmcs_write16(GUEST_CS_SELECTOR, 0xf000);
-	vmcs_writel(GUEST_CS_BASE, 0xffff0000ul);
-
-	seg_setup(VCPU_SREG_DS);
-	seg_setup(VCPU_SREG_ES);
-	seg_setup(VCPU_SREG_FS);
-	seg_setup(VCPU_SREG_GS);
-	seg_setup(VCPU_SREG_SS);
-
-	vmcs_write16(GUEST_TR_SELECTOR, 0);
-	vmcs_writel(GUEST_TR_BASE, 0);
-	vmcs_write32(GUEST_TR_LIMIT, 0xffff);
-	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
-
-	vmcs_write16(GUEST_LDTR_SELECTOR, 0);
-	vmcs_writel(GUEST_LDTR_BASE, 0);
-	vmcs_write32(GUEST_LDTR_LIMIT, 0xffff);
-	vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082);
-
-	if (!init_event) {
-		vmcs_write32(GUEST_SYSENTER_CS, 0);
-		vmcs_writel(GUEST_SYSENTER_ESP, 0);
-		vmcs_writel(GUEST_SYSENTER_EIP, 0);
-		vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
-	}
-
-	kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);
-	kvm_rip_write(vcpu, 0xfff0);
-
-	vmcs_writel(GUEST_GDTR_BASE, 0);
-	vmcs_write32(GUEST_GDTR_LIMIT, 0xffff);
-
-	vmcs_writel(GUEST_IDTR_BASE, 0);
-	vmcs_write32(GUEST_IDTR_LIMIT, 0xffff);
-
-	vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
-	vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, 0);
-	vmcs_writel(GUEST_PENDING_DBG_EXCEPTIONS, 0);
-	if (kvm_mpx_supported())
-		vmcs_write64(GUEST_BNDCFGS, 0);
-
-	setup_msrs(vmx);
-
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);  /* 22.2.1 */
-
-	if (cpu_has_vmx_tpr_shadow() && !init_event) {
-		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, 0);
-		if (cpu_need_tpr_shadow(vcpu))
-			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR,
-				     __pa(vcpu->arch.apic->regs));
-		vmcs_write32(TPR_THRESHOLD, 0);
-	}
-
-	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
-
-	if (vmx->vpid != 0)
-		vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
-
-	cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;
-	vmx->vcpu.arch.cr0 = cr0;
-	vmx_set_cr0(vcpu, cr0); /* enter rmode */
-	vmx_set_cr4(vcpu, 0);
-	vmx_set_efer(vcpu, 0);
-
-	update_exception_bitmap(vcpu);
-
-	vpid_sync_context(vmx->vpid);
-	if (init_event)
-		vmx_clear_hlt(vcpu);
-}
-
-/*
- * In nested virtualization, check if L1 asked to exit on external interrupts.
- * For most existing hypervisors, this will always return true.
- */
-static bool nested_exit_on_intr(struct kvm_vcpu *vcpu)
-{
-	return get_vmcs12(vcpu)->pin_based_vm_exec_control &
-		PIN_BASED_EXT_INTR_MASK;
-}
-
-/*
- * In nested virtualization, check if L1 has set
- * VM_EXIT_ACK_INTR_ON_EXIT
- */
-static bool nested_exit_intr_ack_set(struct kvm_vcpu *vcpu)
-{
-	return get_vmcs12(vcpu)->vm_exit_controls &
-		VM_EXIT_ACK_INTR_ON_EXIT;
-}
-
-static bool nested_exit_on_nmi(struct kvm_vcpu *vcpu)
-{
-	return nested_cpu_has_nmi_exiting(get_vmcs12(vcpu));
-}
-
-static void enable_irq_window(struct kvm_vcpu *vcpu)
-{
-	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
-		      CPU_BASED_VIRTUAL_INTR_PENDING);
-}
-
-static void enable_nmi_window(struct kvm_vcpu *vcpu)
-{
-	if (!enable_vnmi ||
-	    vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_STI) {
-		enable_irq_window(vcpu);
-		return;
-	}
-
-	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
-		      CPU_BASED_VIRTUAL_NMI_PENDING);
-}
-
-static void vmx_inject_irq(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	uint32_t intr;
-	int irq = vcpu->arch.interrupt.nr;
-
-	trace_kvm_inj_virq(irq);
-
-	++vcpu->stat.irq_injections;
-	if (vmx->rmode.vm86_active) {
-		int inc_eip = 0;
-		if (vcpu->arch.interrupt.soft)
-			inc_eip = vcpu->arch.event_exit_inst_len;
-		if (kvm_inject_realmode_interrupt(vcpu, irq, inc_eip) != EMULATE_DONE)
-			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
-		return;
-	}
-	intr = irq | INTR_INFO_VALID_MASK;
-	if (vcpu->arch.interrupt.soft) {
-		intr |= INTR_TYPE_SOFT_INTR;
-		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
-			     vmx->vcpu.arch.event_exit_inst_len);
-	} else
-		intr |= INTR_TYPE_EXT_INTR;
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr);
-
-	vmx_clear_hlt(vcpu);
-}
-
-static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (!enable_vnmi) {
-		/*
-		 * Tracking the NMI-blocked state in software is built upon
-		 * finding the next open IRQ window. This, in turn, depends on
-		 * well-behaving guests: They have to keep IRQs disabled at
-		 * least as long as the NMI handler runs. Otherwise we may
-		 * cause NMI nesting, maybe breaking the guest. But as this is
-		 * highly unlikely, we can live with the residual risk.
-		 */
-		vmx->loaded_vmcs->soft_vnmi_blocked = 1;
-		vmx->loaded_vmcs->vnmi_blocked_time = 0;
-	}
-
-	++vcpu->stat.nmi_injections;
-	vmx->loaded_vmcs->nmi_known_unmasked = false;
-
-	if (vmx->rmode.vm86_active) {
-		if (kvm_inject_realmode_interrupt(vcpu, NMI_VECTOR, 0) != EMULATE_DONE)
-			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
-		return;
-	}
-
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
-			INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR);
-
-	vmx_clear_hlt(vcpu);
-}
-
-static bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	bool masked;
-
-	if (!enable_vnmi)
-		return vmx->loaded_vmcs->soft_vnmi_blocked;
-	if (vmx->loaded_vmcs->nmi_known_unmasked)
-		return false;
-	masked = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_NMI;
-	vmx->loaded_vmcs->nmi_known_unmasked = !masked;
-	return masked;
-}
-
-static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (!enable_vnmi) {
-		if (vmx->loaded_vmcs->soft_vnmi_blocked != masked) {
-			vmx->loaded_vmcs->soft_vnmi_blocked = masked;
-			vmx->loaded_vmcs->vnmi_blocked_time = 0;
-		}
-	} else {
-		vmx->loaded_vmcs->nmi_known_unmasked = !masked;
-		if (masked)
-			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
-				      GUEST_INTR_STATE_NMI);
-		else
-			vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
-					GUEST_INTR_STATE_NMI);
-	}
-}
-
-static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
-{
-	if (to_vmx(vcpu)->nested.nested_run_pending)
-		return 0;
-
-	if (!enable_vnmi &&
-	    to_vmx(vcpu)->loaded_vmcs->soft_vnmi_blocked)
-		return 0;
-
-	return	!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
-		  (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI
-		   | GUEST_INTR_STATE_NMI));
-}
-
-static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu)
-{
-	return (!to_vmx(vcpu)->nested.nested_run_pending &&
-		vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
-		!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
-			(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS));
-}
-
-static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
-{
-	int ret;
-
-	if (enable_unrestricted_guest)
-		return 0;
-
-	ret = x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, addr,
-				    PAGE_SIZE * 3);
-	if (ret)
-		return ret;
-	to_kvm_vmx(kvm)->tss_addr = addr;
-	return init_rmode_tss(kvm);
-}
-
-static int vmx_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
-{
-	to_kvm_vmx(kvm)->ept_identity_map_addr = ident_addr;
-	return 0;
-}
-
-static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
-{
-	switch (vec) {
-	case BP_VECTOR:
-		/*
-		 * Update instruction length as we may reinject the exception
-		 * from user space while in guest debugging mode.
-		 */
-		to_vmx(vcpu)->vcpu.arch.event_exit_inst_len =
-			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
-		if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
-			return false;
-		/* fall through */
-	case DB_VECTOR:
-		if (vcpu->guest_debug &
-			(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
-			return false;
-		/* fall through */
-	case DE_VECTOR:
-	case OF_VECTOR:
-	case BR_VECTOR:
-	case UD_VECTOR:
-	case DF_VECTOR:
-	case SS_VECTOR:
-	case GP_VECTOR:
-	case MF_VECTOR:
-		return true;
-	break;
-	}
-	return false;
-}
-
-static int handle_rmode_exception(struct kvm_vcpu *vcpu,
-				  int vec, u32 err_code)
-{
-	/*
-	 * Instruction with address size override prefix opcode 0x67
-	 * Cause the #SS fault with 0 error code in VM86 mode.
-	 */
-	if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) {
-		if (kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE) {
-			if (vcpu->arch.halt_request) {
-				vcpu->arch.halt_request = 0;
-				return kvm_vcpu_halt(vcpu);
-			}
-			return 1;
-		}
-		return 0;
-	}
-
-	/*
-	 * Forward all other exceptions that are valid in real mode.
-	 * FIXME: Breaks guest debugging in real mode, needs to be fixed with
-	 *        the required debugging infrastructure rework.
-	 */
-	kvm_queue_exception(vcpu, vec);
-	return 1;
-}
-
-/*
- * Trigger machine check on the host. We assume all the MSRs are already set up
- * by the CPU and that we still run on the same CPU as the MCE occurred on.
- * We pass a fake environment to the machine check handler because we want
- * the guest to be always treated like user space, no matter what context
- * it used internally.
- */
-static void kvm_machine_check(void)
-{
-#if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_64)
-	struct pt_regs regs = {
-		.cs = 3, /* Fake ring 3 no matter what the guest ran on */
-		.flags = X86_EFLAGS_IF,
-	};
-
-	do_machine_check(&regs, 0);
-#endif
-}
-
-static int handle_machine_check(struct kvm_vcpu *vcpu)
-{
-	/* already handled by vcpu_run */
-	return 1;
-}
-
-static int handle_exception(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct kvm_run *kvm_run = vcpu->run;
-	u32 intr_info, ex_no, error_code;
-	unsigned long cr2, rip, dr6;
-	u32 vect_info;
-	enum emulation_result er;
-
-	vect_info = vmx->idt_vectoring_info;
-	intr_info = vmx->exit_intr_info;
-
-	if (is_machine_check(intr_info))
-		return handle_machine_check(vcpu);
-
-	if (is_nmi(intr_info))
-		return 1;  /* already handled by vmx_vcpu_run() */
-
-	if (is_invalid_opcode(intr_info))
-		return handle_ud(vcpu);
-
-	error_code = 0;
-	if (intr_info & INTR_INFO_DELIVER_CODE_MASK)
-		error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
-
-	if (!vmx->rmode.vm86_active && is_gp_fault(intr_info)) {
-		WARN_ON_ONCE(!enable_vmware_backdoor);
-		er = kvm_emulate_instruction(vcpu,
-			EMULTYPE_VMWARE | EMULTYPE_NO_UD_ON_FAIL);
-		if (er == EMULATE_USER_EXIT)
-			return 0;
-		else if (er != EMULATE_DONE)
-			kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
-		return 1;
-	}
-
-	/*
-	 * The #PF with PFEC.RSVD = 1 indicates the guest is accessing
-	 * MMIO, it is better to report an internal error.
-	 * See the comments in vmx_handle_exit.
-	 */
-	if ((vect_info & VECTORING_INFO_VALID_MASK) &&
-	    !(is_page_fault(intr_info) && !(error_code & PFERR_RSVD_MASK))) {
-		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
-		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_SIMUL_EX;
-		vcpu->run->internal.ndata = 3;
-		vcpu->run->internal.data[0] = vect_info;
-		vcpu->run->internal.data[1] = intr_info;
-		vcpu->run->internal.data[2] = error_code;
-		return 0;
-	}
-
-	if (is_page_fault(intr_info)) {
-		cr2 = vmcs_readl(EXIT_QUALIFICATION);
-		/* EPT won't cause page fault directly */
-		WARN_ON_ONCE(!vcpu->arch.apf.host_apf_reason && enable_ept);
-		return kvm_handle_page_fault(vcpu, error_code, cr2, NULL, 0);
-	}
-
-	ex_no = intr_info & INTR_INFO_VECTOR_MASK;
-
-	if (vmx->rmode.vm86_active && rmode_exception(vcpu, ex_no))
-		return handle_rmode_exception(vcpu, ex_no, error_code);
-
-	switch (ex_no) {
-	case AC_VECTOR:
-		kvm_queue_exception_e(vcpu, AC_VECTOR, error_code);
-		return 1;
-	case DB_VECTOR:
-		dr6 = vmcs_readl(EXIT_QUALIFICATION);
-		if (!(vcpu->guest_debug &
-		      (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
-			vcpu->arch.dr6 &= ~15;
-			vcpu->arch.dr6 |= dr6 | DR6_RTM;
-			if (is_icebp(intr_info))
-				skip_emulated_instruction(vcpu);
-
-			kvm_queue_exception(vcpu, DB_VECTOR);
-			return 1;
-		}
-		kvm_run->debug.arch.dr6 = dr6 | DR6_FIXED_1;
-		kvm_run->debug.arch.dr7 = vmcs_readl(GUEST_DR7);
-		/* fall through */
-	case BP_VECTOR:
-		/*
-		 * Update instruction length as we may reinject #BP from
-		 * user space while in guest debugging mode. Reading it for
-		 * #DB as well causes no harm, it is not used in that case.
-		 */
-		vmx->vcpu.arch.event_exit_inst_len =
-			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
-		kvm_run->exit_reason = KVM_EXIT_DEBUG;
-		rip = kvm_rip_read(vcpu);
-		kvm_run->debug.arch.pc = vmcs_readl(GUEST_CS_BASE) + rip;
-		kvm_run->debug.arch.exception = ex_no;
-		break;
-	default:
-		kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
-		kvm_run->ex.exception = ex_no;
-		kvm_run->ex.error_code = error_code;
-		break;
-	}
-	return 0;
-}
-
-static int handle_external_interrupt(struct kvm_vcpu *vcpu)
-{
-	++vcpu->stat.irq_exits;
-	return 1;
-}
-
-static int handle_triple_fault(struct kvm_vcpu *vcpu)
-{
-	vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN;
-	vcpu->mmio_needed = 0;
-	return 0;
-}
-
-static int handle_io(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification;
-	int size, in, string;
-	unsigned port;
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	string = (exit_qualification & 16) != 0;
-
-	++vcpu->stat.io_exits;
-
-	if (string)
-		return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
-
-	port = exit_qualification >> 16;
-	size = (exit_qualification & 7) + 1;
-	in = (exit_qualification & 8) != 0;
-
-	return kvm_fast_pio(vcpu, size, port, in);
-}
-
-static void
-vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
-{
-	/*
-	 * Patch in the VMCALL instruction:
-	 */
-	hypercall[0] = 0x0f;
-	hypercall[1] = 0x01;
-	hypercall[2] = 0xc1;
-}
-
-/* called to set cr0 as appropriate for a mov-to-cr0 exit. */
-static int handle_set_cr0(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	if (is_guest_mode(vcpu)) {
-		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-		unsigned long orig_val = val;
-
-		/*
-		 * We get here when L2 changed cr0 in a way that did not change
-		 * any of L1's shadowed bits (see nested_vmx_exit_handled_cr),
-		 * but did change L0 shadowed bits. So we first calculate the
-		 * effective cr0 value that L1 would like to write into the
-		 * hardware. It consists of the L2-owned bits from the new
-		 * value combined with the L1-owned bits from L1's guest_cr0.
-		 */
-		val = (val & ~vmcs12->cr0_guest_host_mask) |
-			(vmcs12->guest_cr0 & vmcs12->cr0_guest_host_mask);
-
-		if (!nested_guest_cr0_valid(vcpu, val))
-			return 1;
-
-		if (kvm_set_cr0(vcpu, val))
-			return 1;
-		vmcs_writel(CR0_READ_SHADOW, orig_val);
-		return 0;
-	} else {
-		if (to_vmx(vcpu)->nested.vmxon &&
-		    !nested_host_cr0_valid(vcpu, val))
-			return 1;
-
-		return kvm_set_cr0(vcpu, val);
-	}
-}
-
-static int handle_set_cr4(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	if (is_guest_mode(vcpu)) {
-		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-		unsigned long orig_val = val;
-
-		/* analogously to handle_set_cr0 */
-		val = (val & ~vmcs12->cr4_guest_host_mask) |
-			(vmcs12->guest_cr4 & vmcs12->cr4_guest_host_mask);
-		if (kvm_set_cr4(vcpu, val))
-			return 1;
-		vmcs_writel(CR4_READ_SHADOW, orig_val);
-		return 0;
-	} else
-		return kvm_set_cr4(vcpu, val);
-}
-
-static int handle_desc(struct kvm_vcpu *vcpu)
-{
-	WARN_ON(!(vcpu->arch.cr4 & X86_CR4_UMIP));
-	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
-}
-
-static int handle_cr(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification, val;
-	int cr;
-	int reg;
-	int err;
-	int ret;
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	cr = exit_qualification & 15;
-	reg = (exit_qualification >> 8) & 15;
-	switch ((exit_qualification >> 4) & 3) {
-	case 0: /* mov to cr */
-		val = kvm_register_readl(vcpu, reg);
-		trace_kvm_cr_write(cr, val);
-		switch (cr) {
-		case 0:
-			err = handle_set_cr0(vcpu, val);
-			return kvm_complete_insn_gp(vcpu, err);
-		case 3:
-			WARN_ON_ONCE(enable_unrestricted_guest);
-			err = kvm_set_cr3(vcpu, val);
-			return kvm_complete_insn_gp(vcpu, err);
-		case 4:
-			err = handle_set_cr4(vcpu, val);
-			return kvm_complete_insn_gp(vcpu, err);
-		case 8: {
-				u8 cr8_prev = kvm_get_cr8(vcpu);
-				u8 cr8 = (u8)val;
-				err = kvm_set_cr8(vcpu, cr8);
-				ret = kvm_complete_insn_gp(vcpu, err);
-				if (lapic_in_kernel(vcpu))
-					return ret;
-				if (cr8_prev <= cr8)
-					return ret;
-				/*
-				 * TODO: we might be squashing a
-				 * KVM_GUESTDBG_SINGLESTEP-triggered
-				 * KVM_EXIT_DEBUG here.
-				 */
-				vcpu->run->exit_reason = KVM_EXIT_SET_TPR;
-				return 0;
-			}
-		}
-		break;
-	case 2: /* clts */
-		WARN_ONCE(1, "Guest should always own CR0.TS");
-		vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS));
-		trace_kvm_cr_write(0, kvm_read_cr0(vcpu));
-		return kvm_skip_emulated_instruction(vcpu);
-	case 1: /*mov from cr*/
-		switch (cr) {
-		case 3:
-			WARN_ON_ONCE(enable_unrestricted_guest);
-			val = kvm_read_cr3(vcpu);
-			kvm_register_write(vcpu, reg, val);
-			trace_kvm_cr_read(cr, val);
-			return kvm_skip_emulated_instruction(vcpu);
-		case 8:
-			val = kvm_get_cr8(vcpu);
-			kvm_register_write(vcpu, reg, val);
-			trace_kvm_cr_read(cr, val);
-			return kvm_skip_emulated_instruction(vcpu);
-		}
-		break;
-	case 3: /* lmsw */
-		val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
-		trace_kvm_cr_write(0, (kvm_read_cr0(vcpu) & ~0xful) | val);
-		kvm_lmsw(vcpu, val);
-
-		return kvm_skip_emulated_instruction(vcpu);
-	default:
-		break;
-	}
-	vcpu->run->exit_reason = 0;
-	vcpu_unimpl(vcpu, "unhandled control register: op %d cr %d\n",
-	       (int)(exit_qualification >> 4) & 3, cr);
-	return 0;
-}
-
-static int handle_dr(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification;
-	int dr, dr7, reg;
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	dr = exit_qualification & DEBUG_REG_ACCESS_NUM;
-
-	/* First, if DR does not exist, trigger UD */
-	if (!kvm_require_dr(vcpu, dr))
-		return 1;
-
-	/* Do not handle if the CPL > 0, will trigger GP on re-entry */
-	if (!kvm_require_cpl(vcpu, 0))
-		return 1;
-	dr7 = vmcs_readl(GUEST_DR7);
-	if (dr7 & DR7_GD) {
-		/*
-		 * As the vm-exit takes precedence over the debug trap, we
-		 * need to emulate the latter, either for the host or the
-		 * guest debugging itself.
-		 */
-		if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) {
-			vcpu->run->debug.arch.dr6 = vcpu->arch.dr6;
-			vcpu->run->debug.arch.dr7 = dr7;
-			vcpu->run->debug.arch.pc = kvm_get_linear_rip(vcpu);
-			vcpu->run->debug.arch.exception = DB_VECTOR;
-			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
-			return 0;
-		} else {
-			vcpu->arch.dr6 &= ~15;
-			vcpu->arch.dr6 |= DR6_BD | DR6_RTM;
-			kvm_queue_exception(vcpu, DB_VECTOR);
-			return 1;
-		}
-	}
-
-	if (vcpu->guest_debug == 0) {
-		vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
-				CPU_BASED_MOV_DR_EXITING);
-
-		/*
-		 * No more DR vmexits; force a reload of the debug registers
-		 * and reenter on this instruction.  The next vmexit will
-		 * retrieve the full state of the debug registers.
-		 */
-		vcpu->arch.switch_db_regs |= KVM_DEBUGREG_WONT_EXIT;
-		return 1;
-	}
-
-	reg = DEBUG_REG_ACCESS_REG(exit_qualification);
-	if (exit_qualification & TYPE_MOV_FROM_DR) {
-		unsigned long val;
-
-		if (kvm_get_dr(vcpu, dr, &val))
-			return 1;
-		kvm_register_write(vcpu, reg, val);
-	} else
-		if (kvm_set_dr(vcpu, dr, kvm_register_readl(vcpu, reg)))
-			return 1;
-
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static u64 vmx_get_dr6(struct kvm_vcpu *vcpu)
-{
-	return vcpu->arch.dr6;
-}
-
-static void vmx_set_dr6(struct kvm_vcpu *vcpu, unsigned long val)
-{
-}
-
-static void vmx_sync_dirty_debug_regs(struct kvm_vcpu *vcpu)
-{
-	get_debugreg(vcpu->arch.db[0], 0);
-	get_debugreg(vcpu->arch.db[1], 1);
-	get_debugreg(vcpu->arch.db[2], 2);
-	get_debugreg(vcpu->arch.db[3], 3);
-	get_debugreg(vcpu->arch.dr6, 6);
-	vcpu->arch.dr7 = vmcs_readl(GUEST_DR7);
-
-	vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_WONT_EXIT;
-	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL, CPU_BASED_MOV_DR_EXITING);
-}
-
-static void vmx_set_dr7(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	vmcs_writel(GUEST_DR7, val);
-}
-
-static int handle_cpuid(struct kvm_vcpu *vcpu)
-{
-	return kvm_emulate_cpuid(vcpu);
-}
-
-static int handle_rdmsr(struct kvm_vcpu *vcpu)
-{
-	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
-	struct msr_data msr_info;
-
-	msr_info.index = ecx;
-	msr_info.host_initiated = false;
-	if (vmx_get_msr(vcpu, &msr_info)) {
-		trace_kvm_msr_read_ex(ecx);
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	trace_kvm_msr_read(ecx, msr_info.data);
-
-	/* FIXME: handling of bits 32:63 of rax, rdx */
-	vcpu->arch.regs[VCPU_REGS_RAX] = msr_info.data & -1u;
-	vcpu->arch.regs[VCPU_REGS_RDX] = (msr_info.data >> 32) & -1u;
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int handle_wrmsr(struct kvm_vcpu *vcpu)
-{
-	struct msr_data msr;
-	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
-	u64 data = (vcpu->arch.regs[VCPU_REGS_RAX] & -1u)
-		| ((u64)(vcpu->arch.regs[VCPU_REGS_RDX] & -1u) << 32);
-
-	msr.data = data;
-	msr.index = ecx;
-	msr.host_initiated = false;
-	if (kvm_set_msr(vcpu, &msr) != 0) {
-		trace_kvm_msr_write_ex(ecx, data);
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	trace_kvm_msr_write(ecx, data);
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu)
-{
-	kvm_apic_update_ppr(vcpu);
-	return 1;
-}
-
-static int handle_interrupt_window(struct kvm_vcpu *vcpu)
-{
-	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
-			CPU_BASED_VIRTUAL_INTR_PENDING);
-
-	kvm_make_request(KVM_REQ_EVENT, vcpu);
-
-	++vcpu->stat.irq_window_exits;
-	return 1;
-}
-
-static int handle_halt(struct kvm_vcpu *vcpu)
-{
-	return kvm_emulate_halt(vcpu);
-}
-
-static int handle_vmcall(struct kvm_vcpu *vcpu)
-{
-	return kvm_emulate_hypercall(vcpu);
-}
-
-static int handle_invd(struct kvm_vcpu *vcpu)
-{
-	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
-}
-
-static int handle_invlpg(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
-	kvm_mmu_invlpg(vcpu, exit_qualification);
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int handle_rdpmc(struct kvm_vcpu *vcpu)
-{
-	int err;
-
-	err = kvm_rdpmc(vcpu);
-	return kvm_complete_insn_gp(vcpu, err);
-}
-
-static int handle_wbinvd(struct kvm_vcpu *vcpu)
-{
-	return kvm_emulate_wbinvd(vcpu);
-}
-
-static int handle_xsetbv(struct kvm_vcpu *vcpu)
-{
-	u64 new_bv = kvm_read_edx_eax(vcpu);
-	u32 index = kvm_register_read(vcpu, VCPU_REGS_RCX);
-
-	if (kvm_set_xcr(vcpu, index, new_bv) == 0)
-		return kvm_skip_emulated_instruction(vcpu);
-	return 1;
-}
-
-static int handle_xsaves(struct kvm_vcpu *vcpu)
-{
-	kvm_skip_emulated_instruction(vcpu);
-	WARN(1, "this should never happen\n");
-	return 1;
-}
-
-static int handle_xrstors(struct kvm_vcpu *vcpu)
-{
-	kvm_skip_emulated_instruction(vcpu);
-	WARN(1, "this should never happen\n");
-	return 1;
-}
-
-static int handle_apic_access(struct kvm_vcpu *vcpu)
-{
-	if (likely(fasteoi)) {
-		unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-		int access_type, offset;
-
-		access_type = exit_qualification & APIC_ACCESS_TYPE;
-		offset = exit_qualification & APIC_ACCESS_OFFSET;
-		/*
-		 * Sane guest uses MOV to write EOI, with written value
-		 * not cared. So make a short-circuit here by avoiding
-		 * heavy instruction emulation.
-		 */
-		if ((access_type == TYPE_LINEAR_APIC_INST_WRITE) &&
-		    (offset == APIC_EOI)) {
-			kvm_lapic_set_eoi(vcpu);
-			return kvm_skip_emulated_instruction(vcpu);
-		}
-	}
-	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
-}
-
-static int handle_apic_eoi_induced(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	int vector = exit_qualification & 0xff;
-
-	/* EOI-induced VM exit is trap-like and thus no need to adjust IP */
-	kvm_apic_set_eoi_accelerated(vcpu, vector);
-	return 1;
-}
-
-static int handle_apic_write(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	u32 offset = exit_qualification & 0xfff;
-
-	/* APIC-write VM exit is trap-like and thus no need to adjust IP */
-	kvm_apic_write_nodecode(vcpu, offset);
-	return 1;
-}
-
-static int handle_task_switch(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long exit_qualification;
-	bool has_error_code = false;
-	u32 error_code = 0;
-	u16 tss_selector;
-	int reason, type, idt_v, idt_index;
-
-	idt_v = (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
-	idt_index = (vmx->idt_vectoring_info & VECTORING_INFO_VECTOR_MASK);
-	type = (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK);
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
-	reason = (u32)exit_qualification >> 30;
-	if (reason == TASK_SWITCH_GATE && idt_v) {
-		switch (type) {
-		case INTR_TYPE_NMI_INTR:
-			vcpu->arch.nmi_injected = false;
-			vmx_set_nmi_mask(vcpu, true);
-			break;
-		case INTR_TYPE_EXT_INTR:
-		case INTR_TYPE_SOFT_INTR:
-			kvm_clear_interrupt_queue(vcpu);
-			break;
-		case INTR_TYPE_HARD_EXCEPTION:
-			if (vmx->idt_vectoring_info &
-			    VECTORING_INFO_DELIVER_CODE_MASK) {
-				has_error_code = true;
-				error_code =
-					vmcs_read32(IDT_VECTORING_ERROR_CODE);
-			}
-			/* fall through */
-		case INTR_TYPE_SOFT_EXCEPTION:
-			kvm_clear_exception_queue(vcpu);
-			break;
-		default:
-			break;
-		}
-	}
-	tss_selector = exit_qualification;
-
-	if (!idt_v || (type != INTR_TYPE_HARD_EXCEPTION &&
-		       type != INTR_TYPE_EXT_INTR &&
-		       type != INTR_TYPE_NMI_INTR))
-		skip_emulated_instruction(vcpu);
-
-	if (kvm_task_switch(vcpu, tss_selector,
-			    type == INTR_TYPE_SOFT_INTR ? idt_index : -1, reason,
-			    has_error_code, error_code) == EMULATE_FAIL) {
-		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
-		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
-		vcpu->run->internal.ndata = 0;
-		return 0;
-	}
-
-	/*
-	 * TODO: What about debug traps on tss switch?
-	 *       Are we supposed to inject them and update dr6?
-	 */
-
-	return 1;
-}
-
-static int handle_ept_violation(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification;
-	gpa_t gpa;
-	u64 error_code;
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
-	/*
-	 * EPT violation happened while executing iret from NMI,
-	 * "blocked by NMI" bit has to be set before next VM entry.
-	 * There are errata that may cause this bit to not be set:
-	 * AAK134, BY25.
-	 */
-	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
-			enable_vnmi &&
-			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
-		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI);
-
-	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
-	trace_kvm_page_fault(gpa, exit_qualification);
-
-	/* Is it a read fault? */
-	error_code = (exit_qualification & EPT_VIOLATION_ACC_READ)
-		     ? PFERR_USER_MASK : 0;
-	/* Is it a write fault? */
-	error_code |= (exit_qualification & EPT_VIOLATION_ACC_WRITE)
-		      ? PFERR_WRITE_MASK : 0;
-	/* Is it a fetch fault? */
-	error_code |= (exit_qualification & EPT_VIOLATION_ACC_INSTR)
-		      ? PFERR_FETCH_MASK : 0;
-	/* ept page table entry is present? */
-	error_code |= (exit_qualification &
-		       (EPT_VIOLATION_READABLE | EPT_VIOLATION_WRITABLE |
-			EPT_VIOLATION_EXECUTABLE))
-		      ? PFERR_PRESENT_MASK : 0;
-
-	error_code |= (exit_qualification & 0x100) != 0 ?
-	       PFERR_GUEST_FINAL_MASK : PFERR_GUEST_PAGE_MASK;
-
-	vcpu->arch.exit_qualification = exit_qualification;
-	return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);
-}
-
-static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
-{
-	gpa_t gpa;
-
-	/*
-	 * A nested guest cannot optimize MMIO vmexits, because we have an
-	 * nGPA here instead of the required GPA.
-	 */
-	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
-	if (!is_guest_mode(vcpu) &&
-	    !kvm_io_bus_write(vcpu, KVM_FAST_MMIO_BUS, gpa, 0, NULL)) {
-		trace_kvm_fast_mmio(gpa);
-		/*
-		 * Doing kvm_skip_emulated_instruction() depends on undefined
-		 * behavior: Intel's manual doesn't mandate
-		 * VM_EXIT_INSTRUCTION_LEN to be set in VMCS when EPT MISCONFIG
-		 * occurs and while on real hardware it was observed to be set,
-		 * other hypervisors (namely Hyper-V) don't set it, we end up
-		 * advancing IP with some random value. Disable fast mmio when
-		 * running nested and keep it for real hardware in hope that
-		 * VM_EXIT_INSTRUCTION_LEN will always be set correctly.
-		 */
-		if (!static_cpu_has(X86_FEATURE_HYPERVISOR))
-			return kvm_skip_emulated_instruction(vcpu);
-		else
-			return kvm_emulate_instruction(vcpu, EMULTYPE_SKIP) ==
-								EMULATE_DONE;
-	}
-
-	return kvm_mmu_page_fault(vcpu, gpa, PFERR_RSVD_MASK, NULL, 0);
-}
-
-static int handle_nmi_window(struct kvm_vcpu *vcpu)
-{
-	WARN_ON_ONCE(!enable_vnmi);
-	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
-			CPU_BASED_VIRTUAL_NMI_PENDING);
-	++vcpu->stat.nmi_window_exits;
-	kvm_make_request(KVM_REQ_EVENT, vcpu);
-
-	return 1;
-}
-
-static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	enum emulation_result err = EMULATE_DONE;
-	int ret = 1;
-	u32 cpu_exec_ctrl;
-	bool intr_window_requested;
-	unsigned count = 130;
-
-	/*
-	 * We should never reach the point where we are emulating L2
-	 * due to invalid guest state as that means we incorrectly
-	 * allowed a nested VMEntry with an invalid vmcs12.
-	 */
-	WARN_ON_ONCE(vmx->emulation_required && vmx->nested.nested_run_pending);
-
-	cpu_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	intr_window_requested = cpu_exec_ctrl & CPU_BASED_VIRTUAL_INTR_PENDING;
-
-	while (vmx->emulation_required && count-- != 0) {
-		if (intr_window_requested && vmx_interrupt_allowed(vcpu))
-			return handle_interrupt_window(&vmx->vcpu);
-
-		if (kvm_test_request(KVM_REQ_EVENT, vcpu))
-			return 1;
-
-		err = kvm_emulate_instruction(vcpu, 0);
-
-		if (err == EMULATE_USER_EXIT) {
-			++vcpu->stat.mmio_exits;
-			ret = 0;
-			goto out;
-		}
-
-		if (err != EMULATE_DONE)
-			goto emulation_error;
-
-		if (vmx->emulation_required && !vmx->rmode.vm86_active &&
-		    vcpu->arch.exception.pending)
-			goto emulation_error;
-
-		if (vcpu->arch.halt_request) {
-			vcpu->arch.halt_request = 0;
-			ret = kvm_vcpu_halt(vcpu);
-			goto out;
-		}
-
-		if (signal_pending(current))
-			goto out;
-		if (need_resched())
-			schedule();
-	}
-
-out:
-	return ret;
-
-emulation_error:
-	vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
-	vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
-	vcpu->run->internal.ndata = 0;
-	return 0;
-}
-
-static void grow_ple_window(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int old = vmx->ple_window;
-
-	vmx->ple_window = __grow_ple_window(old, ple_window,
-					    ple_window_grow,
-					    ple_window_max);
-
-	if (vmx->ple_window != old)
-		vmx->ple_window_dirty = true;
-
-	trace_kvm_ple_window_grow(vcpu->vcpu_id, vmx->ple_window, old);
-}
-
-static void shrink_ple_window(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int old = vmx->ple_window;
-
-	vmx->ple_window = __shrink_ple_window(old, ple_window,
-					      ple_window_shrink,
-					      ple_window);
-
-	if (vmx->ple_window != old)
-		vmx->ple_window_dirty = true;
-
-	trace_kvm_ple_window_shrink(vcpu->vcpu_id, vmx->ple_window, old);
-}
-
-/*
- * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
- */
-static void wakeup_handler(void)
-{
-	struct kvm_vcpu *vcpu;
-	int cpu = smp_processor_id();
-
-	spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
-	list_for_each_entry(vcpu, &per_cpu(blocked_vcpu_on_cpu, cpu),
-			blocked_vcpu_list) {
-		struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
-
-		if (pi_test_on(pi_desc) == 1)
-			kvm_vcpu_kick(vcpu);
-	}
-	spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
-}
-
-static void vmx_enable_tdp(void)
-{
-	kvm_mmu_set_mask_ptes(VMX_EPT_READABLE_MASK,
-		enable_ept_ad_bits ? VMX_EPT_ACCESS_BIT : 0ull,
-		enable_ept_ad_bits ? VMX_EPT_DIRTY_BIT : 0ull,
-		0ull, VMX_EPT_EXECUTABLE_MASK,
-		cpu_has_vmx_ept_execute_only() ? 0ull : VMX_EPT_READABLE_MASK,
-		VMX_EPT_RWX_MASK, 0ull);
-
-	ept_set_mmio_spte_mask();
-	kvm_enable_tdp();
-}
-
-static __init int hardware_setup(void)
-{
-	unsigned long host_bndcfgs;
-	int r = -ENOMEM, i;
-
-	rdmsrl_safe(MSR_EFER, &host_efer);
-
-	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
-		kvm_define_shared_msr(i, vmx_msr_index[i]);
-
-	for (i = 0; i < VMX_BITMAP_NR; i++) {
-		vmx_bitmap[i] = (unsigned long *)__get_free_page(GFP_KERNEL);
-		if (!vmx_bitmap[i])
-			goto out;
-	}
-
-	memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE);
-	memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE);
-
-	if (setup_vmcs_config(&vmcs_config) < 0) {
-		r = -EIO;
-		goto out;
-	}
-
-	if (boot_cpu_has(X86_FEATURE_NX))
-		kvm_enable_efer_bits(EFER_NX);
-
-	if (boot_cpu_has(X86_FEATURE_MPX)) {
-		rdmsrl(MSR_IA32_BNDCFGS, host_bndcfgs);
-		WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost");
-	}
-
-	if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() ||
-		!(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global()))
-		enable_vpid = 0;
-
-	if (!cpu_has_vmx_ept() ||
-	    !cpu_has_vmx_ept_4levels() ||
-	    !cpu_has_vmx_ept_mt_wb() ||
-	    !cpu_has_vmx_invept_global())
-		enable_ept = 0;
-
-	if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
-		enable_ept_ad_bits = 0;
-
-	if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
-		enable_unrestricted_guest = 0;
-
-	if (!cpu_has_vmx_flexpriority())
-		flexpriority_enabled = 0;
-
-	if (!cpu_has_virtual_nmis())
-		enable_vnmi = 0;
-
-	/*
-	 * set_apic_access_page_addr() is used to reload apic access
-	 * page upon invalidation.  No need to do anything if not
-	 * using the APIC_ACCESS_ADDR VMCS field.
-	 */
-	if (!flexpriority_enabled)
-		kvm_x86_ops->set_apic_access_page_addr = NULL;
-
-	if (!cpu_has_vmx_tpr_shadow())
-		kvm_x86_ops->update_cr8_intercept = NULL;
-
-	if (enable_ept && !cpu_has_vmx_ept_2m_page())
-		kvm_disable_largepages();
-
-#if IS_ENABLED(CONFIG_HYPERV)
-	if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
-	    && enable_ept)
-		kvm_x86_ops->tlb_remote_flush = vmx_hv_remote_flush_tlb;
-#endif
-
-	if (!cpu_has_vmx_ple()) {
-		ple_gap = 0;
-		ple_window = 0;
-		ple_window_grow = 0;
-		ple_window_max = 0;
-		ple_window_shrink = 0;
-	}
-
-	if (!cpu_has_vmx_apicv()) {
-		enable_apicv = 0;
-		kvm_x86_ops->sync_pir_to_irr = NULL;
-	}
-
-	if (cpu_has_vmx_tsc_scaling()) {
-		kvm_has_tsc_control = true;
-		kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX;
-		kvm_tsc_scaling_ratio_frac_bits = 48;
-	}
-
-	set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
-
-	if (enable_ept)
-		vmx_enable_tdp();
-	else
-		kvm_disable_tdp();
-
-	if (!nested) {
-		kvm_x86_ops->get_nested_state = NULL;
-		kvm_x86_ops->set_nested_state = NULL;
-	}
-
-	/*
-	 * Only enable PML when hardware supports PML feature, and both EPT
-	 * and EPT A/D bit features are enabled -- PML depends on them to work.
-	 */
-	if (!enable_ept || !enable_ept_ad_bits || !cpu_has_vmx_pml())
-		enable_pml = 0;
-
-	if (!enable_pml) {
-		kvm_x86_ops->slot_enable_log_dirty = NULL;
-		kvm_x86_ops->slot_disable_log_dirty = NULL;
-		kvm_x86_ops->flush_log_dirty = NULL;
-		kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
-	}
-
-	if (!cpu_has_vmx_preemption_timer())
-		kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
-
-	if (cpu_has_vmx_preemption_timer() && enable_preemption_timer) {
-		u64 vmx_msr;
-
-		rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
-		cpu_preemption_timer_multi =
-			 vmx_msr & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
-	} else {
-		kvm_x86_ops->set_hv_timer = NULL;
-		kvm_x86_ops->cancel_hv_timer = NULL;
-	}
-
-	if (!cpu_has_vmx_shadow_vmcs())
-		enable_shadow_vmcs = 0;
-	if (enable_shadow_vmcs)
-		init_vmcs_shadow_fields();
-
-	kvm_set_posted_intr_wakeup_handler(wakeup_handler);
-	nested_vmx_setup_ctls_msrs(&vmcs_config.nested, enable_apicv);
-
-	kvm_mce_cap_supported |= MCG_LMCE_P;
-
-	return alloc_kvm_area();
-
-out:
-	for (i = 0; i < VMX_BITMAP_NR; i++)
-		free_page((unsigned long)vmx_bitmap[i]);
-
-    return r;
-}
-
-static __exit void hardware_unsetup(void)
-{
-	int i;
-
-	for (i = 0; i < VMX_BITMAP_NR; i++)
-		free_page((unsigned long)vmx_bitmap[i]);
-
-	free_kvm_area();
-}
-
-/*
- * Indicate a busy-waiting vcpu in spinlock. We do not enable the PAUSE
- * exiting, so only get here on cpu with PAUSE-Loop-Exiting.
- */
-static int handle_pause(struct kvm_vcpu *vcpu)
-{
-	if (!kvm_pause_in_guest(vcpu->kvm))
-		grow_ple_window(vcpu);
-
-	/*
-	 * Intel sdm vol3 ch-25.1.3 says: The "PAUSE-loop exiting"
-	 * VM-execution control is ignored if CPL > 0. OTOH, KVM
-	 * never set PAUSE_EXITING and just set PLE if supported,
-	 * so the vcpu must be CPL=0 if it gets a PAUSE exit.
-	 */
-	kvm_vcpu_on_spin(vcpu, true);
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int handle_nop(struct kvm_vcpu *vcpu)
-{
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int handle_mwait(struct kvm_vcpu *vcpu)
-{
-	printk_once(KERN_WARNING "kvm: MWAIT instruction emulated as NOP!\n");
-	return handle_nop(vcpu);
-}
-
-static int handle_invalid_op(struct kvm_vcpu *vcpu)
-{
-	kvm_queue_exception(vcpu, UD_VECTOR);
-	return 1;
-}
-
-static int handle_monitor_trap(struct kvm_vcpu *vcpu)
-{
-	return 1;
-}
-
-static int handle_monitor(struct kvm_vcpu *vcpu)
-{
-	printk_once(KERN_WARNING "kvm: MONITOR instruction emulated as NOP!\n");
-	return handle_nop(vcpu);
-}
-
-/*
- * The following 3 functions, nested_vmx_succeed()/failValid()/failInvalid(),
- * set the success or error code of an emulated VMX instruction (as specified
- * by Vol 2B, VMX Instruction Reference, "Conventions"), and skip the emulated
- * instruction.
- */
-static int nested_vmx_succeed(struct kvm_vcpu *vcpu)
-{
-	vmx_set_rflags(vcpu, vmx_get_rflags(vcpu)
-			& ~(X86_EFLAGS_CF | X86_EFLAGS_PF | X86_EFLAGS_AF |
-			    X86_EFLAGS_ZF | X86_EFLAGS_SF | X86_EFLAGS_OF));
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int nested_vmx_failInvalid(struct kvm_vcpu *vcpu)
-{
-	vmx_set_rflags(vcpu, (vmx_get_rflags(vcpu)
-			& ~(X86_EFLAGS_PF | X86_EFLAGS_AF | X86_EFLAGS_ZF |
-			    X86_EFLAGS_SF | X86_EFLAGS_OF))
-			| X86_EFLAGS_CF);
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static int nested_vmx_failValid(struct kvm_vcpu *vcpu,
-				u32 vm_instruction_error)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * failValid writes the error number to the current VMCS, which
-	 * can't be done if there isn't a current VMCS.
-	 */
-	if (vmx->nested.current_vmptr == -1ull && !vmx->nested.hv_evmcs)
-		return nested_vmx_failInvalid(vcpu);
-
-	vmx_set_rflags(vcpu, (vmx_get_rflags(vcpu)
-			& ~(X86_EFLAGS_CF | X86_EFLAGS_PF | X86_EFLAGS_AF |
-			    X86_EFLAGS_SF | X86_EFLAGS_OF))
-			| X86_EFLAGS_ZF);
-	get_vmcs12(vcpu)->vm_instruction_error = vm_instruction_error;
-	/*
-	 * We don't need to force a shadow sync because
-	 * VM_INSTRUCTION_ERROR is not shadowed
-	 */
-	return kvm_skip_emulated_instruction(vcpu);
-}
-
-static void nested_vmx_abort(struct kvm_vcpu *vcpu, u32 indicator)
-{
-	/* TODO: not to reset guest simply here. */
-	kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
-	pr_debug_ratelimited("kvm: nested vmx abort, indicator %d\n", indicator);
-}
-
-static enum hrtimer_restart vmx_preemption_timer_fn(struct hrtimer *timer)
-{
-	struct vcpu_vmx *vmx =
-		container_of(timer, struct vcpu_vmx, nested.preemption_timer);
-
-	vmx->nested.preemption_timer_expired = true;
-	kvm_make_request(KVM_REQ_EVENT, &vmx->vcpu);
-	kvm_vcpu_kick(&vmx->vcpu);
-
-	return HRTIMER_NORESTART;
-}
-
-/*
- * Decode the memory-address operand of a vmx instruction, as recorded on an
- * exit caused by such an instruction (run by a guest hypervisor).
- * On success, returns 0. When the operand is invalid, returns 1 and throws
- * #UD or #GP.
- */
-static int get_vmx_mem_address(struct kvm_vcpu *vcpu,
-				 unsigned long exit_qualification,
-				 u32 vmx_instruction_info, bool wr, gva_t *ret)
-{
-	gva_t off;
-	bool exn;
-	struct kvm_segment s;
-
-	/*
-	 * According to Vol. 3B, "Information for VM Exits Due to Instruction
-	 * Execution", on an exit, vmx_instruction_info holds most of the
-	 * addressing components of the operand. Only the displacement part
-	 * is put in exit_qualification (see 3B, "Basic VM-Exit Information").
-	 * For how an actual address is calculated from all these components,
-	 * refer to Vol. 1, "Operand Addressing".
-	 */
-	int  scaling = vmx_instruction_info & 3;
-	int  addr_size = (vmx_instruction_info >> 7) & 7;
-	bool is_reg = vmx_instruction_info & (1u << 10);
-	int  seg_reg = (vmx_instruction_info >> 15) & 7;
-	int  index_reg = (vmx_instruction_info >> 18) & 0xf;
-	bool index_is_valid = !(vmx_instruction_info & (1u << 22));
-	int  base_reg       = (vmx_instruction_info >> 23) & 0xf;
-	bool base_is_valid  = !(vmx_instruction_info & (1u << 27));
-
-	if (is_reg) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	/* Addr = segment_base + offset */
-	/* offset = base + [index * scale] + displacement */
-	off = exit_qualification; /* holds the displacement */
-	if (base_is_valid)
-		off += kvm_register_read(vcpu, base_reg);
-	if (index_is_valid)
-		off += kvm_register_read(vcpu, index_reg)<<scaling;
-	vmx_get_segment(vcpu, &s, seg_reg);
-	*ret = s.base + off;
-
-	if (addr_size == 1) /* 32 bit */
-		*ret &= 0xffffffff;
-
-	/* Checks for #GP/#SS exceptions. */
-	exn = false;
-	if (is_long_mode(vcpu)) {
-		/* Long mode: #GP(0)/#SS(0) if the memory address is in a
-		 * non-canonical form. This is the only check on the memory
-		 * destination for long mode!
-		 */
-		exn = is_noncanonical_address(*ret, vcpu);
-	} else if (is_protmode(vcpu)) {
-		/* Protected mode: apply checks for segment validity in the
-		 * following order:
-		 * - segment type check (#GP(0) may be thrown)
-		 * - usability check (#GP(0)/#SS(0))
-		 * - limit check (#GP(0)/#SS(0))
-		 */
-		if (wr)
-			/* #GP(0) if the destination operand is located in a
-			 * read-only data segment or any code segment.
-			 */
-			exn = ((s.type & 0xa) == 0 || (s.type & 8));
-		else
-			/* #GP(0) if the source operand is located in an
-			 * execute-only code segment
-			 */
-			exn = ((s.type & 0xa) == 8);
-		if (exn) {
-			kvm_queue_exception_e(vcpu, GP_VECTOR, 0);
-			return 1;
-		}
-		/* Protected mode: #GP(0)/#SS(0) if the segment is unusable.
-		 */
-		exn = (s.unusable != 0);
-		/* Protected mode: #GP(0)/#SS(0) if the memory
-		 * operand is outside the segment limit.
-		 */
-		exn = exn || (off + sizeof(u64) > s.limit);
-	}
-	if (exn) {
-		kvm_queue_exception_e(vcpu,
-				      seg_reg == VCPU_SREG_SS ?
-						SS_VECTOR : GP_VECTOR,
-				      0);
-		return 1;
-	}
-
-	return 0;
-}
-
-static int nested_vmx_get_vmptr(struct kvm_vcpu *vcpu, gpa_t *vmpointer)
-{
-	gva_t gva;
-	struct x86_exception e;
-
-	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
-			vmcs_read32(VMX_INSTRUCTION_INFO), false, &gva))
-		return 1;
-
-	if (kvm_read_guest_virt(vcpu, gva, vmpointer, sizeof(*vmpointer), &e)) {
-		kvm_inject_page_fault(vcpu, &e);
-		return 1;
-	}
-
-	return 0;
-}
-
-/*
- * Allocate a shadow VMCS and associate it with the currently loaded
- * VMCS, unless such a shadow VMCS already exists. The newly allocated
- * VMCS is also VMCLEARed, so that it is ready for use.
- */
-static struct vmcs *alloc_shadow_vmcs(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct loaded_vmcs *loaded_vmcs = vmx->loaded_vmcs;
-
-	/*
-	 * We should allocate a shadow vmcs for vmcs01 only when L1
-	 * executes VMXON and free it when L1 executes VMXOFF.
-	 * As it is invalid to execute VMXON twice, we shouldn't reach
-	 * here when vmcs01 already have an allocated shadow vmcs.
-	 */
-	WARN_ON(loaded_vmcs == &vmx->vmcs01 && loaded_vmcs->shadow_vmcs);
-
-	if (!loaded_vmcs->shadow_vmcs) {
-		loaded_vmcs->shadow_vmcs = alloc_vmcs(true);
-		if (loaded_vmcs->shadow_vmcs)
-			vmcs_clear(loaded_vmcs->shadow_vmcs);
-	}
-	return loaded_vmcs->shadow_vmcs;
-}
-
-static int enter_vmx_operation(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int r;
-
-	r = alloc_loaded_vmcs(&vmx->nested.vmcs02);
-	if (r < 0)
-		goto out_vmcs02;
-
-	vmx->nested.cached_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
-	if (!vmx->nested.cached_vmcs12)
-		goto out_cached_vmcs12;
-
-	vmx->nested.cached_shadow_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
-	if (!vmx->nested.cached_shadow_vmcs12)
-		goto out_cached_shadow_vmcs12;
-
-	if (enable_shadow_vmcs && !alloc_shadow_vmcs(vcpu))
-		goto out_shadow_vmcs;
-
-	hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC,
-		     HRTIMER_MODE_REL_PINNED);
-	vmx->nested.preemption_timer.function = vmx_preemption_timer_fn;
-
-	vmx->nested.vpid02 = allocate_vpid();
-
-	vmx->nested.vmcs02_initialized = false;
-	vmx->nested.vmxon = true;
-	return 0;
-
-out_shadow_vmcs:
-	kfree(vmx->nested.cached_shadow_vmcs12);
-
-out_cached_shadow_vmcs12:
-	kfree(vmx->nested.cached_vmcs12);
-
-out_cached_vmcs12:
-	free_loaded_vmcs(&vmx->nested.vmcs02);
-
-out_vmcs02:
-	return -ENOMEM;
-}
-
-/*
- * Emulate the VMXON instruction.
- * Currently, we just remember that VMX is active, and do not save or even
- * inspect the argument to VMXON (the so-called "VMXON pointer") because we
- * do not currently need to store anything in that guest-allocated memory
- * region. Consequently, VMCLEAR and VMPTRLD also do not verify that the their
- * argument is different from the VMXON pointer (which the spec says they do).
- */
-static int handle_vmon(struct kvm_vcpu *vcpu)
-{
-	int ret;
-	gpa_t vmptr;
-	struct page *page;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	const u64 VMXON_NEEDED_FEATURES = FEATURE_CONTROL_LOCKED
-		| FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
-
-	/*
-	 * The Intel VMX Instruction Reference lists a bunch of bits that are
-	 * prerequisite to running VMXON, most notably cr4.VMXE must be set to
-	 * 1 (see vmx_set_cr4() for when we allow the guest to set this).
-	 * Otherwise, we should fail with #UD.  But most faulting conditions
-	 * have already been checked by hardware, prior to the VM-exit for
-	 * VMXON.  We do test guest cr4.VMXE because processor CR4 always has
-	 * that bit set to 1 in non-root mode.
-	 */
-	if (!kvm_read_cr4_bits(vcpu, X86_CR4_VMXE)) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	/* CPL=0 must be checked manually. */
-	if (vmx_get_cpl(vcpu)) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	if (vmx->nested.vmxon)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMXON_IN_VMX_ROOT_OPERATION);
-
-	if ((vmx->msr_ia32_feature_control & VMXON_NEEDED_FEATURES)
-			!= VMXON_NEEDED_FEATURES) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	if (nested_vmx_get_vmptr(vcpu, &vmptr))
-		return 1;
-
-	/*
-	 * SDM 3: 24.11.5
-	 * The first 4 bytes of VMXON region contain the supported
-	 * VMCS revision identifier
-	 *
-	 * Note - IA32_VMX_BASIC[48] will never be 1 for the nested case;
-	 * which replaces physical address width with 32
-	 */
-	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
-		return nested_vmx_failInvalid(vcpu);
-
-	page = kvm_vcpu_gpa_to_page(vcpu, vmptr);
-	if (is_error_page(page))
-		return nested_vmx_failInvalid(vcpu);
-
-	if (*(u32 *)kmap(page) != VMCS12_REVISION) {
-		kunmap(page);
-		kvm_release_page_clean(page);
-		return nested_vmx_failInvalid(vcpu);
-	}
-	kunmap(page);
-	kvm_release_page_clean(page);
-
-	vmx->nested.vmxon_ptr = vmptr;
-	ret = enter_vmx_operation(vcpu);
-	if (ret)
-		return ret;
-
-	return nested_vmx_succeed(vcpu);
-}
-
-/*
- * Intel's VMX Instruction Reference specifies a common set of prerequisites
- * for running VMX instructions (except VMXON, whose prerequisites are
- * slightly different). It also specifies what exception to inject otherwise.
- * Note that many of these exceptions have priority over VM exits, so they
- * don't have to be checked again here.
- */
-static int nested_vmx_check_permission(struct kvm_vcpu *vcpu)
-{
-	if (!to_vmx(vcpu)->nested.vmxon) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 0;
-	}
-
-	if (vmx_get_cpl(vcpu)) {
-		kvm_inject_gp(vcpu, 0);
-		return 0;
-	}
-
-	return 1;
-}
-
-static void vmx_disable_shadow_vmcs(struct vcpu_vmx *vmx)
-{
-	vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_SHADOW_VMCS);
-	vmcs_write64(VMCS_LINK_POINTER, -1ull);
-}
-
-static inline void nested_release_evmcs(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (!vmx->nested.hv_evmcs)
-		return;
-
-	kunmap(vmx->nested.hv_evmcs_page);
-	kvm_release_page_dirty(vmx->nested.hv_evmcs_page);
-	vmx->nested.hv_evmcs_vmptr = -1ull;
-	vmx->nested.hv_evmcs_page = NULL;
-	vmx->nested.hv_evmcs = NULL;
-}
-
-static inline void nested_release_vmcs12(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (vmx->nested.current_vmptr == -1ull)
-		return;
-
-	if (enable_shadow_vmcs) {
-		/* copy to memory all shadowed fields in case
-		   they were modified */
-		copy_shadow_to_vmcs12(vmx);
-		vmx->nested.need_vmcs12_sync = false;
-		vmx_disable_shadow_vmcs(vmx);
-	}
-	vmx->nested.posted_intr_nv = -1;
-
-	/* Flush VMCS12 to guest memory */
-	kvm_vcpu_write_guest_page(vcpu,
-				  vmx->nested.current_vmptr >> PAGE_SHIFT,
-				  vmx->nested.cached_vmcs12, 0, VMCS12_SIZE);
-
-	kvm_mmu_free_roots(vcpu, &vcpu->arch.guest_mmu, KVM_MMU_ROOTS_ALL);
-
-	vmx->nested.current_vmptr = -1ull;
-}
-
-/*
- * Free whatever needs to be freed from vmx->nested when L1 goes down, or
- * just stops using VMX.
- */
-static void free_nested(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (!vmx->nested.vmxon && !vmx->nested.smm.vmxon)
-		return;
-
-	vmx->nested.vmxon = false;
-	vmx->nested.smm.vmxon = false;
-	free_vpid(vmx->nested.vpid02);
-	vmx->nested.posted_intr_nv = -1;
-	vmx->nested.current_vmptr = -1ull;
-	if (enable_shadow_vmcs) {
-		vmx_disable_shadow_vmcs(vmx);
-		vmcs_clear(vmx->vmcs01.shadow_vmcs);
-		free_vmcs(vmx->vmcs01.shadow_vmcs);
-		vmx->vmcs01.shadow_vmcs = NULL;
-	}
-	kfree(vmx->nested.cached_vmcs12);
-	kfree(vmx->nested.cached_shadow_vmcs12);
-	/* Unpin physical memory we referred to in the vmcs02 */
-	if (vmx->nested.apic_access_page) {
-		kvm_release_page_dirty(vmx->nested.apic_access_page);
-		vmx->nested.apic_access_page = NULL;
-	}
-	if (vmx->nested.virtual_apic_page) {
-		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
-		vmx->nested.virtual_apic_page = NULL;
-	}
-	if (vmx->nested.pi_desc_page) {
-		kunmap(vmx->nested.pi_desc_page);
-		kvm_release_page_dirty(vmx->nested.pi_desc_page);
-		vmx->nested.pi_desc_page = NULL;
-		vmx->nested.pi_desc = NULL;
-	}
-
-	kvm_mmu_free_roots(vcpu, &vcpu->arch.guest_mmu, KVM_MMU_ROOTS_ALL);
-
-	nested_release_evmcs(vcpu);
-
-	free_loaded_vmcs(&vmx->nested.vmcs02);
-}
-
-/* Emulate the VMXOFF instruction */
-static int handle_vmoff(struct kvm_vcpu *vcpu)
-{
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-	free_nested(vcpu);
-	return nested_vmx_succeed(vcpu);
-}
-
-/* Emulate the VMCLEAR instruction */
-static int handle_vmclear(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 zero = 0;
-	gpa_t vmptr;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (nested_vmx_get_vmptr(vcpu, &vmptr))
-		return 1;
-
-	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMCLEAR_INVALID_ADDRESS);
-
-	if (vmptr == vmx->nested.vmxon_ptr)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMCLEAR_VMXON_POINTER);
-
-	if (vmx->nested.hv_evmcs_page) {
-		if (vmptr == vmx->nested.hv_evmcs_vmptr)
-			nested_release_evmcs(vcpu);
-	} else {
-		if (vmptr == vmx->nested.current_vmptr)
-			nested_release_vmcs12(vcpu);
-
-		kvm_vcpu_write_guest(vcpu,
-				     vmptr + offsetof(struct vmcs12,
-						      launch_state),
-				     &zero, sizeof(zero));
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch);
-
-/* Emulate the VMLAUNCH instruction */
-static int handle_vmlaunch(struct kvm_vcpu *vcpu)
-{
-	return nested_vmx_run(vcpu, true);
-}
-
-/* Emulate the VMRESUME instruction */
-static int handle_vmresume(struct kvm_vcpu *vcpu)
-{
-
-	return nested_vmx_run(vcpu, false);
-}
-
-/*
- * Read a vmcs12 field. Since these can have varying lengths and we return
- * one type, we chose the biggest type (u64) and zero-extend the return value
- * to that size. Note that the caller, handle_vmread, might need to use only
- * some of the bits we return here (e.g., on 32-bit guests, only 32 bits of
- * 64-bit fields are to be returned).
- */
-static inline int vmcs12_read_any(struct vmcs12 *vmcs12,
-				  unsigned long field, u64 *ret)
-{
-	short offset = vmcs_field_to_offset(field);
-	char *p;
-
-	if (offset < 0)
-		return offset;
-
-	p = (char *)vmcs12 + offset;
-
-	switch (vmcs_field_width(field)) {
-	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
-		*ret = *((natural_width *)p);
-		return 0;
-	case VMCS_FIELD_WIDTH_U16:
-		*ret = *((u16 *)p);
-		return 0;
-	case VMCS_FIELD_WIDTH_U32:
-		*ret = *((u32 *)p);
-		return 0;
-	case VMCS_FIELD_WIDTH_U64:
-		*ret = *((u64 *)p);
-		return 0;
-	default:
-		WARN_ON(1);
-		return -ENOENT;
-	}
-}
-
-
-static inline int vmcs12_write_any(struct vmcs12 *vmcs12,
-				   unsigned long field, u64 field_value){
-	short offset = vmcs_field_to_offset(field);
-	char *p = (char *)vmcs12 + offset;
-	if (offset < 0)
-		return offset;
-
-	switch (vmcs_field_width(field)) {
-	case VMCS_FIELD_WIDTH_U16:
-		*(u16 *)p = field_value;
-		return 0;
-	case VMCS_FIELD_WIDTH_U32:
-		*(u32 *)p = field_value;
-		return 0;
-	case VMCS_FIELD_WIDTH_U64:
-		*(u64 *)p = field_value;
-		return 0;
-	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
-		*(natural_width *)p = field_value;
-		return 0;
-	default:
-		WARN_ON(1);
-		return -ENOENT;
-	}
-
-}
-
-static int copy_enlightened_to_vmcs12(struct vcpu_vmx *vmx)
-{
-	struct vmcs12 *vmcs12 = vmx->nested.cached_vmcs12;
-	struct hv_enlightened_vmcs *evmcs = vmx->nested.hv_evmcs;
-
-	/* HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE */
-	vmcs12->tpr_threshold = evmcs->tpr_threshold;
-	vmcs12->guest_rip = evmcs->guest_rip;
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC))) {
-		vmcs12->guest_rsp = evmcs->guest_rsp;
-		vmcs12->guest_rflags = evmcs->guest_rflags;
-		vmcs12->guest_interruptibility_info =
-			evmcs->guest_interruptibility_info;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC))) {
-		vmcs12->cpu_based_vm_exec_control =
-			evmcs->cpu_based_vm_exec_control;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC))) {
-		vmcs12->exception_bitmap = evmcs->exception_bitmap;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY))) {
-		vmcs12->vm_entry_controls = evmcs->vm_entry_controls;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT))) {
-		vmcs12->vm_entry_intr_info_field =
-			evmcs->vm_entry_intr_info_field;
-		vmcs12->vm_entry_exception_error_code =
-			evmcs->vm_entry_exception_error_code;
-		vmcs12->vm_entry_instruction_len =
-			evmcs->vm_entry_instruction_len;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1))) {
-		vmcs12->host_ia32_pat = evmcs->host_ia32_pat;
-		vmcs12->host_ia32_efer = evmcs->host_ia32_efer;
-		vmcs12->host_cr0 = evmcs->host_cr0;
-		vmcs12->host_cr3 = evmcs->host_cr3;
-		vmcs12->host_cr4 = evmcs->host_cr4;
-		vmcs12->host_ia32_sysenter_esp = evmcs->host_ia32_sysenter_esp;
-		vmcs12->host_ia32_sysenter_eip = evmcs->host_ia32_sysenter_eip;
-		vmcs12->host_rip = evmcs->host_rip;
-		vmcs12->host_ia32_sysenter_cs = evmcs->host_ia32_sysenter_cs;
-		vmcs12->host_es_selector = evmcs->host_es_selector;
-		vmcs12->host_cs_selector = evmcs->host_cs_selector;
-		vmcs12->host_ss_selector = evmcs->host_ss_selector;
-		vmcs12->host_ds_selector = evmcs->host_ds_selector;
-		vmcs12->host_fs_selector = evmcs->host_fs_selector;
-		vmcs12->host_gs_selector = evmcs->host_gs_selector;
-		vmcs12->host_tr_selector = evmcs->host_tr_selector;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1))) {
-		vmcs12->pin_based_vm_exec_control =
-			evmcs->pin_based_vm_exec_control;
-		vmcs12->vm_exit_controls = evmcs->vm_exit_controls;
-		vmcs12->secondary_vm_exec_control =
-			evmcs->secondary_vm_exec_control;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP))) {
-		vmcs12->io_bitmap_a = evmcs->io_bitmap_a;
-		vmcs12->io_bitmap_b = evmcs->io_bitmap_b;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP))) {
-		vmcs12->msr_bitmap = evmcs->msr_bitmap;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2))) {
-		vmcs12->guest_es_base = evmcs->guest_es_base;
-		vmcs12->guest_cs_base = evmcs->guest_cs_base;
-		vmcs12->guest_ss_base = evmcs->guest_ss_base;
-		vmcs12->guest_ds_base = evmcs->guest_ds_base;
-		vmcs12->guest_fs_base = evmcs->guest_fs_base;
-		vmcs12->guest_gs_base = evmcs->guest_gs_base;
-		vmcs12->guest_ldtr_base = evmcs->guest_ldtr_base;
-		vmcs12->guest_tr_base = evmcs->guest_tr_base;
-		vmcs12->guest_gdtr_base = evmcs->guest_gdtr_base;
-		vmcs12->guest_idtr_base = evmcs->guest_idtr_base;
-		vmcs12->guest_es_limit = evmcs->guest_es_limit;
-		vmcs12->guest_cs_limit = evmcs->guest_cs_limit;
-		vmcs12->guest_ss_limit = evmcs->guest_ss_limit;
-		vmcs12->guest_ds_limit = evmcs->guest_ds_limit;
-		vmcs12->guest_fs_limit = evmcs->guest_fs_limit;
-		vmcs12->guest_gs_limit = evmcs->guest_gs_limit;
-		vmcs12->guest_ldtr_limit = evmcs->guest_ldtr_limit;
-		vmcs12->guest_tr_limit = evmcs->guest_tr_limit;
-		vmcs12->guest_gdtr_limit = evmcs->guest_gdtr_limit;
-		vmcs12->guest_idtr_limit = evmcs->guest_idtr_limit;
-		vmcs12->guest_es_ar_bytes = evmcs->guest_es_ar_bytes;
-		vmcs12->guest_cs_ar_bytes = evmcs->guest_cs_ar_bytes;
-		vmcs12->guest_ss_ar_bytes = evmcs->guest_ss_ar_bytes;
-		vmcs12->guest_ds_ar_bytes = evmcs->guest_ds_ar_bytes;
-		vmcs12->guest_fs_ar_bytes = evmcs->guest_fs_ar_bytes;
-		vmcs12->guest_gs_ar_bytes = evmcs->guest_gs_ar_bytes;
-		vmcs12->guest_ldtr_ar_bytes = evmcs->guest_ldtr_ar_bytes;
-		vmcs12->guest_tr_ar_bytes = evmcs->guest_tr_ar_bytes;
-		vmcs12->guest_es_selector = evmcs->guest_es_selector;
-		vmcs12->guest_cs_selector = evmcs->guest_cs_selector;
-		vmcs12->guest_ss_selector = evmcs->guest_ss_selector;
-		vmcs12->guest_ds_selector = evmcs->guest_ds_selector;
-		vmcs12->guest_fs_selector = evmcs->guest_fs_selector;
-		vmcs12->guest_gs_selector = evmcs->guest_gs_selector;
-		vmcs12->guest_ldtr_selector = evmcs->guest_ldtr_selector;
-		vmcs12->guest_tr_selector = evmcs->guest_tr_selector;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2))) {
-		vmcs12->tsc_offset = evmcs->tsc_offset;
-		vmcs12->virtual_apic_page_addr = evmcs->virtual_apic_page_addr;
-		vmcs12->xss_exit_bitmap = evmcs->xss_exit_bitmap;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR))) {
-		vmcs12->cr0_guest_host_mask = evmcs->cr0_guest_host_mask;
-		vmcs12->cr4_guest_host_mask = evmcs->cr4_guest_host_mask;
-		vmcs12->cr0_read_shadow = evmcs->cr0_read_shadow;
-		vmcs12->cr4_read_shadow = evmcs->cr4_read_shadow;
-		vmcs12->guest_cr0 = evmcs->guest_cr0;
-		vmcs12->guest_cr3 = evmcs->guest_cr3;
-		vmcs12->guest_cr4 = evmcs->guest_cr4;
-		vmcs12->guest_dr7 = evmcs->guest_dr7;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER))) {
-		vmcs12->host_fs_base = evmcs->host_fs_base;
-		vmcs12->host_gs_base = evmcs->host_gs_base;
-		vmcs12->host_tr_base = evmcs->host_tr_base;
-		vmcs12->host_gdtr_base = evmcs->host_gdtr_base;
-		vmcs12->host_idtr_base = evmcs->host_idtr_base;
-		vmcs12->host_rsp = evmcs->host_rsp;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT))) {
-		vmcs12->ept_pointer = evmcs->ept_pointer;
-		vmcs12->virtual_processor_id = evmcs->virtual_processor_id;
-	}
-
-	if (unlikely(!(evmcs->hv_clean_fields &
-		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1))) {
-		vmcs12->vmcs_link_pointer = evmcs->vmcs_link_pointer;
-		vmcs12->guest_ia32_debugctl = evmcs->guest_ia32_debugctl;
-		vmcs12->guest_ia32_pat = evmcs->guest_ia32_pat;
-		vmcs12->guest_ia32_efer = evmcs->guest_ia32_efer;
-		vmcs12->guest_pdptr0 = evmcs->guest_pdptr0;
-		vmcs12->guest_pdptr1 = evmcs->guest_pdptr1;
-		vmcs12->guest_pdptr2 = evmcs->guest_pdptr2;
-		vmcs12->guest_pdptr3 = evmcs->guest_pdptr3;
-		vmcs12->guest_pending_dbg_exceptions =
-			evmcs->guest_pending_dbg_exceptions;
-		vmcs12->guest_sysenter_esp = evmcs->guest_sysenter_esp;
-		vmcs12->guest_sysenter_eip = evmcs->guest_sysenter_eip;
-		vmcs12->guest_bndcfgs = evmcs->guest_bndcfgs;
-		vmcs12->guest_activity_state = evmcs->guest_activity_state;
-		vmcs12->guest_sysenter_cs = evmcs->guest_sysenter_cs;
-	}
-
-	/*
-	 * Not used?
-	 * vmcs12->vm_exit_msr_store_addr = evmcs->vm_exit_msr_store_addr;
-	 * vmcs12->vm_exit_msr_load_addr = evmcs->vm_exit_msr_load_addr;
-	 * vmcs12->vm_entry_msr_load_addr = evmcs->vm_entry_msr_load_addr;
-	 * vmcs12->cr3_target_value0 = evmcs->cr3_target_value0;
-	 * vmcs12->cr3_target_value1 = evmcs->cr3_target_value1;
-	 * vmcs12->cr3_target_value2 = evmcs->cr3_target_value2;
-	 * vmcs12->cr3_target_value3 = evmcs->cr3_target_value3;
-	 * vmcs12->page_fault_error_code_mask =
-	 *		evmcs->page_fault_error_code_mask;
-	 * vmcs12->page_fault_error_code_match =
-	 *		evmcs->page_fault_error_code_match;
-	 * vmcs12->cr3_target_count = evmcs->cr3_target_count;
-	 * vmcs12->vm_exit_msr_store_count = evmcs->vm_exit_msr_store_count;
-	 * vmcs12->vm_exit_msr_load_count = evmcs->vm_exit_msr_load_count;
-	 * vmcs12->vm_entry_msr_load_count = evmcs->vm_entry_msr_load_count;
-	 */
-
-	/*
-	 * Read only fields:
-	 * vmcs12->guest_physical_address = evmcs->guest_physical_address;
-	 * vmcs12->vm_instruction_error = evmcs->vm_instruction_error;
-	 * vmcs12->vm_exit_reason = evmcs->vm_exit_reason;
-	 * vmcs12->vm_exit_intr_info = evmcs->vm_exit_intr_info;
-	 * vmcs12->vm_exit_intr_error_code = evmcs->vm_exit_intr_error_code;
-	 * vmcs12->idt_vectoring_info_field = evmcs->idt_vectoring_info_field;
-	 * vmcs12->idt_vectoring_error_code = evmcs->idt_vectoring_error_code;
-	 * vmcs12->vm_exit_instruction_len = evmcs->vm_exit_instruction_len;
-	 * vmcs12->vmx_instruction_info = evmcs->vmx_instruction_info;
-	 * vmcs12->exit_qualification = evmcs->exit_qualification;
-	 * vmcs12->guest_linear_address = evmcs->guest_linear_address;
-	 *
-	 * Not present in struct vmcs12:
-	 * vmcs12->exit_io_instruction_ecx = evmcs->exit_io_instruction_ecx;
-	 * vmcs12->exit_io_instruction_esi = evmcs->exit_io_instruction_esi;
-	 * vmcs12->exit_io_instruction_edi = evmcs->exit_io_instruction_edi;
-	 * vmcs12->exit_io_instruction_eip = evmcs->exit_io_instruction_eip;
-	 */
-
-	return 0;
-}
-
-static int copy_vmcs12_to_enlightened(struct vcpu_vmx *vmx)
-{
-	struct vmcs12 *vmcs12 = vmx->nested.cached_vmcs12;
-	struct hv_enlightened_vmcs *evmcs = vmx->nested.hv_evmcs;
-
-	/*
-	 * Should not be changed by KVM:
-	 *
-	 * evmcs->host_es_selector = vmcs12->host_es_selector;
-	 * evmcs->host_cs_selector = vmcs12->host_cs_selector;
-	 * evmcs->host_ss_selector = vmcs12->host_ss_selector;
-	 * evmcs->host_ds_selector = vmcs12->host_ds_selector;
-	 * evmcs->host_fs_selector = vmcs12->host_fs_selector;
-	 * evmcs->host_gs_selector = vmcs12->host_gs_selector;
-	 * evmcs->host_tr_selector = vmcs12->host_tr_selector;
-	 * evmcs->host_ia32_pat = vmcs12->host_ia32_pat;
-	 * evmcs->host_ia32_efer = vmcs12->host_ia32_efer;
-	 * evmcs->host_cr0 = vmcs12->host_cr0;
-	 * evmcs->host_cr3 = vmcs12->host_cr3;
-	 * evmcs->host_cr4 = vmcs12->host_cr4;
-	 * evmcs->host_ia32_sysenter_esp = vmcs12->host_ia32_sysenter_esp;
-	 * evmcs->host_ia32_sysenter_eip = vmcs12->host_ia32_sysenter_eip;
-	 * evmcs->host_rip = vmcs12->host_rip;
-	 * evmcs->host_ia32_sysenter_cs = vmcs12->host_ia32_sysenter_cs;
-	 * evmcs->host_fs_base = vmcs12->host_fs_base;
-	 * evmcs->host_gs_base = vmcs12->host_gs_base;
-	 * evmcs->host_tr_base = vmcs12->host_tr_base;
-	 * evmcs->host_gdtr_base = vmcs12->host_gdtr_base;
-	 * evmcs->host_idtr_base = vmcs12->host_idtr_base;
-	 * evmcs->host_rsp = vmcs12->host_rsp;
-	 * sync_vmcs12() doesn't read these:
-	 * evmcs->io_bitmap_a = vmcs12->io_bitmap_a;
-	 * evmcs->io_bitmap_b = vmcs12->io_bitmap_b;
-	 * evmcs->msr_bitmap = vmcs12->msr_bitmap;
-	 * evmcs->ept_pointer = vmcs12->ept_pointer;
-	 * evmcs->xss_exit_bitmap = vmcs12->xss_exit_bitmap;
-	 * evmcs->vm_exit_msr_store_addr = vmcs12->vm_exit_msr_store_addr;
-	 * evmcs->vm_exit_msr_load_addr = vmcs12->vm_exit_msr_load_addr;
-	 * evmcs->vm_entry_msr_load_addr = vmcs12->vm_entry_msr_load_addr;
-	 * evmcs->cr3_target_value0 = vmcs12->cr3_target_value0;
-	 * evmcs->cr3_target_value1 = vmcs12->cr3_target_value1;
-	 * evmcs->cr3_target_value2 = vmcs12->cr3_target_value2;
-	 * evmcs->cr3_target_value3 = vmcs12->cr3_target_value3;
-	 * evmcs->tpr_threshold = vmcs12->tpr_threshold;
-	 * evmcs->virtual_processor_id = vmcs12->virtual_processor_id;
-	 * evmcs->exception_bitmap = vmcs12->exception_bitmap;
-	 * evmcs->vmcs_link_pointer = vmcs12->vmcs_link_pointer;
-	 * evmcs->pin_based_vm_exec_control = vmcs12->pin_based_vm_exec_control;
-	 * evmcs->vm_exit_controls = vmcs12->vm_exit_controls;
-	 * evmcs->secondary_vm_exec_control = vmcs12->secondary_vm_exec_control;
-	 * evmcs->page_fault_error_code_mask =
-	 *		vmcs12->page_fault_error_code_mask;
-	 * evmcs->page_fault_error_code_match =
-	 *		vmcs12->page_fault_error_code_match;
-	 * evmcs->cr3_target_count = vmcs12->cr3_target_count;
-	 * evmcs->virtual_apic_page_addr = vmcs12->virtual_apic_page_addr;
-	 * evmcs->tsc_offset = vmcs12->tsc_offset;
-	 * evmcs->guest_ia32_debugctl = vmcs12->guest_ia32_debugctl;
-	 * evmcs->cr0_guest_host_mask = vmcs12->cr0_guest_host_mask;
-	 * evmcs->cr4_guest_host_mask = vmcs12->cr4_guest_host_mask;
-	 * evmcs->cr0_read_shadow = vmcs12->cr0_read_shadow;
-	 * evmcs->cr4_read_shadow = vmcs12->cr4_read_shadow;
-	 * evmcs->vm_exit_msr_store_count = vmcs12->vm_exit_msr_store_count;
-	 * evmcs->vm_exit_msr_load_count = vmcs12->vm_exit_msr_load_count;
-	 * evmcs->vm_entry_msr_load_count = vmcs12->vm_entry_msr_load_count;
-	 *
-	 * Not present in struct vmcs12:
-	 * evmcs->exit_io_instruction_ecx = vmcs12->exit_io_instruction_ecx;
-	 * evmcs->exit_io_instruction_esi = vmcs12->exit_io_instruction_esi;
-	 * evmcs->exit_io_instruction_edi = vmcs12->exit_io_instruction_edi;
-	 * evmcs->exit_io_instruction_eip = vmcs12->exit_io_instruction_eip;
-	 */
-
-	evmcs->guest_es_selector = vmcs12->guest_es_selector;
-	evmcs->guest_cs_selector = vmcs12->guest_cs_selector;
-	evmcs->guest_ss_selector = vmcs12->guest_ss_selector;
-	evmcs->guest_ds_selector = vmcs12->guest_ds_selector;
-	evmcs->guest_fs_selector = vmcs12->guest_fs_selector;
-	evmcs->guest_gs_selector = vmcs12->guest_gs_selector;
-	evmcs->guest_ldtr_selector = vmcs12->guest_ldtr_selector;
-	evmcs->guest_tr_selector = vmcs12->guest_tr_selector;
-
-	evmcs->guest_es_limit = vmcs12->guest_es_limit;
-	evmcs->guest_cs_limit = vmcs12->guest_cs_limit;
-	evmcs->guest_ss_limit = vmcs12->guest_ss_limit;
-	evmcs->guest_ds_limit = vmcs12->guest_ds_limit;
-	evmcs->guest_fs_limit = vmcs12->guest_fs_limit;
-	evmcs->guest_gs_limit = vmcs12->guest_gs_limit;
-	evmcs->guest_ldtr_limit = vmcs12->guest_ldtr_limit;
-	evmcs->guest_tr_limit = vmcs12->guest_tr_limit;
-	evmcs->guest_gdtr_limit = vmcs12->guest_gdtr_limit;
-	evmcs->guest_idtr_limit = vmcs12->guest_idtr_limit;
-
-	evmcs->guest_es_ar_bytes = vmcs12->guest_es_ar_bytes;
-	evmcs->guest_cs_ar_bytes = vmcs12->guest_cs_ar_bytes;
-	evmcs->guest_ss_ar_bytes = vmcs12->guest_ss_ar_bytes;
-	evmcs->guest_ds_ar_bytes = vmcs12->guest_ds_ar_bytes;
-	evmcs->guest_fs_ar_bytes = vmcs12->guest_fs_ar_bytes;
-	evmcs->guest_gs_ar_bytes = vmcs12->guest_gs_ar_bytes;
-	evmcs->guest_ldtr_ar_bytes = vmcs12->guest_ldtr_ar_bytes;
-	evmcs->guest_tr_ar_bytes = vmcs12->guest_tr_ar_bytes;
-
-	evmcs->guest_es_base = vmcs12->guest_es_base;
-	evmcs->guest_cs_base = vmcs12->guest_cs_base;
-	evmcs->guest_ss_base = vmcs12->guest_ss_base;
-	evmcs->guest_ds_base = vmcs12->guest_ds_base;
-	evmcs->guest_fs_base = vmcs12->guest_fs_base;
-	evmcs->guest_gs_base = vmcs12->guest_gs_base;
-	evmcs->guest_ldtr_base = vmcs12->guest_ldtr_base;
-	evmcs->guest_tr_base = vmcs12->guest_tr_base;
-	evmcs->guest_gdtr_base = vmcs12->guest_gdtr_base;
-	evmcs->guest_idtr_base = vmcs12->guest_idtr_base;
-
-	evmcs->guest_ia32_pat = vmcs12->guest_ia32_pat;
-	evmcs->guest_ia32_efer = vmcs12->guest_ia32_efer;
-
-	evmcs->guest_pdptr0 = vmcs12->guest_pdptr0;
-	evmcs->guest_pdptr1 = vmcs12->guest_pdptr1;
-	evmcs->guest_pdptr2 = vmcs12->guest_pdptr2;
-	evmcs->guest_pdptr3 = vmcs12->guest_pdptr3;
-
-	evmcs->guest_pending_dbg_exceptions =
-		vmcs12->guest_pending_dbg_exceptions;
-	evmcs->guest_sysenter_esp = vmcs12->guest_sysenter_esp;
-	evmcs->guest_sysenter_eip = vmcs12->guest_sysenter_eip;
-
-	evmcs->guest_activity_state = vmcs12->guest_activity_state;
-	evmcs->guest_sysenter_cs = vmcs12->guest_sysenter_cs;
-
-	evmcs->guest_cr0 = vmcs12->guest_cr0;
-	evmcs->guest_cr3 = vmcs12->guest_cr3;
-	evmcs->guest_cr4 = vmcs12->guest_cr4;
-	evmcs->guest_dr7 = vmcs12->guest_dr7;
-
-	evmcs->guest_physical_address = vmcs12->guest_physical_address;
-
-	evmcs->vm_instruction_error = vmcs12->vm_instruction_error;
-	evmcs->vm_exit_reason = vmcs12->vm_exit_reason;
-	evmcs->vm_exit_intr_info = vmcs12->vm_exit_intr_info;
-	evmcs->vm_exit_intr_error_code = vmcs12->vm_exit_intr_error_code;
-	evmcs->idt_vectoring_info_field = vmcs12->idt_vectoring_info_field;
-	evmcs->idt_vectoring_error_code = vmcs12->idt_vectoring_error_code;
-	evmcs->vm_exit_instruction_len = vmcs12->vm_exit_instruction_len;
-	evmcs->vmx_instruction_info = vmcs12->vmx_instruction_info;
-
-	evmcs->exit_qualification = vmcs12->exit_qualification;
-
-	evmcs->guest_linear_address = vmcs12->guest_linear_address;
-	evmcs->guest_rsp = vmcs12->guest_rsp;
-	evmcs->guest_rflags = vmcs12->guest_rflags;
-
-	evmcs->guest_interruptibility_info =
-		vmcs12->guest_interruptibility_info;
-	evmcs->cpu_based_vm_exec_control = vmcs12->cpu_based_vm_exec_control;
-	evmcs->vm_entry_controls = vmcs12->vm_entry_controls;
-	evmcs->vm_entry_intr_info_field = vmcs12->vm_entry_intr_info_field;
-	evmcs->vm_entry_exception_error_code =
-		vmcs12->vm_entry_exception_error_code;
-	evmcs->vm_entry_instruction_len = vmcs12->vm_entry_instruction_len;
-
-	evmcs->guest_rip = vmcs12->guest_rip;
-
-	evmcs->guest_bndcfgs = vmcs12->guest_bndcfgs;
-
-	return 0;
-}
-
-/*
- * Copy the writable VMCS shadow fields back to the VMCS12, in case
- * they have been modified by the L1 guest. Note that the "read-only"
- * VM-exit information fields are actually writable if the vCPU is
- * configured to support "VMWRITE to any supported field in the VMCS."
- */
-static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx)
-{
-	const u16 *fields[] = {
-		shadow_read_write_fields,
-		shadow_read_only_fields
-	};
-	const int max_fields[] = {
-		max_shadow_read_write_fields,
-		max_shadow_read_only_fields
-	};
-	int i, q;
-	unsigned long field;
-	u64 field_value;
-	struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
-
-	preempt_disable();
-
-	vmcs_load(shadow_vmcs);
-
-	for (q = 0; q < ARRAY_SIZE(fields); q++) {
-		for (i = 0; i < max_fields[q]; i++) {
-			field = fields[q][i];
-			field_value = __vmcs_readl(field);
-			vmcs12_write_any(get_vmcs12(&vmx->vcpu), field, field_value);
-		}
-		/*
-		 * Skip the VM-exit information fields if they are read-only.
-		 */
-		if (!nested_cpu_has_vmwrite_any_field(&vmx->vcpu))
-			break;
-	}
-
-	vmcs_clear(shadow_vmcs);
-	vmcs_load(vmx->loaded_vmcs->vmcs);
-
-	preempt_enable();
-}
-
-static void copy_vmcs12_to_shadow(struct vcpu_vmx *vmx)
-{
-	const u16 *fields[] = {
-		shadow_read_write_fields,
-		shadow_read_only_fields
-	};
-	const int max_fields[] = {
-		max_shadow_read_write_fields,
-		max_shadow_read_only_fields
-	};
-	int i, q;
-	unsigned long field;
-	u64 field_value = 0;
-	struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
-
-	vmcs_load(shadow_vmcs);
-
-	for (q = 0; q < ARRAY_SIZE(fields); q++) {
-		for (i = 0; i < max_fields[q]; i++) {
-			field = fields[q][i];
-			vmcs12_read_any(get_vmcs12(&vmx->vcpu), field, &field_value);
-			__vmcs_writel(field, field_value);
-		}
-	}
-
-	vmcs_clear(shadow_vmcs);
-	vmcs_load(vmx->loaded_vmcs->vmcs);
-}
-
-static int handle_vmread(struct kvm_vcpu *vcpu)
-{
-	unsigned long field;
-	u64 field_value;
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	gva_t gva = 0;
-	struct vmcs12 *vmcs12;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (to_vmx(vcpu)->nested.current_vmptr == -1ull)
-		return nested_vmx_failInvalid(vcpu);
-
-	if (!is_guest_mode(vcpu))
-		vmcs12 = get_vmcs12(vcpu);
-	else {
-		/*
-		 * When vmcs->vmcs_link_pointer is -1ull, any VMREAD
-		 * to shadowed-field sets the ALU flags for VMfailInvalid.
-		 */
-		if (get_vmcs12(vcpu)->vmcs_link_pointer == -1ull)
-			return nested_vmx_failInvalid(vcpu);
-		vmcs12 = get_shadow_vmcs12(vcpu);
-	}
-
-	/* Decode instruction info and find the field to read */
-	field = kvm_register_readl(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
-	/* Read the field, zero-extended to a u64 field_value */
-	if (vmcs12_read_any(vmcs12, field, &field_value) < 0)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_UNSUPPORTED_VMCS_COMPONENT);
-
-	/*
-	 * Now copy part of this value to register or memory, as requested.
-	 * Note that the number of bits actually copied is 32 or 64 depending
-	 * on the guest's mode (32 or 64 bit), not on the given field's length.
-	 */
-	if (vmx_instruction_info & (1u << 10)) {
-		kvm_register_writel(vcpu, (((vmx_instruction_info) >> 3) & 0xf),
-			field_value);
-	} else {
-		if (get_vmx_mem_address(vcpu, exit_qualification,
-				vmx_instruction_info, true, &gva))
-			return 1;
-		/* _system ok, nested_vmx_check_permission has verified cpl=0 */
-		kvm_write_guest_virt_system(vcpu, gva, &field_value,
-					    (is_long_mode(vcpu) ? 8 : 4), NULL);
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-
-static int handle_vmwrite(struct kvm_vcpu *vcpu)
-{
-	unsigned long field;
-	gva_t gva;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-
-	/* The value to write might be 32 or 64 bits, depending on L1's long
-	 * mode, and eventually we need to write that into a field of several
-	 * possible lengths. The code below first zero-extends the value to 64
-	 * bit (field_value), and then copies only the appropriate number of
-	 * bits into the vmcs12 field.
-	 */
-	u64 field_value = 0;
-	struct x86_exception e;
-	struct vmcs12 *vmcs12;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (vmx->nested.current_vmptr == -1ull)
-		return nested_vmx_failInvalid(vcpu);
-
-	if (vmx_instruction_info & (1u << 10))
-		field_value = kvm_register_readl(vcpu,
-			(((vmx_instruction_info) >> 3) & 0xf));
-	else {
-		if (get_vmx_mem_address(vcpu, exit_qualification,
-				vmx_instruction_info, false, &gva))
-			return 1;
-		if (kvm_read_guest_virt(vcpu, gva, &field_value,
-					(is_64_bit_mode(vcpu) ? 8 : 4), &e)) {
-			kvm_inject_page_fault(vcpu, &e);
-			return 1;
-		}
-	}
-
-
-	field = kvm_register_readl(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
-	/*
-	 * If the vCPU supports "VMWRITE to any supported field in the
-	 * VMCS," then the "read-only" fields are actually read/write.
-	 */
-	if (vmcs_field_readonly(field) &&
-	    !nested_cpu_has_vmwrite_any_field(vcpu))
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMWRITE_READ_ONLY_VMCS_COMPONENT);
-
-	if (!is_guest_mode(vcpu))
-		vmcs12 = get_vmcs12(vcpu);
-	else {
-		/*
-		 * When vmcs->vmcs_link_pointer is -1ull, any VMWRITE
-		 * to shadowed-field sets the ALU flags for VMfailInvalid.
-		 */
-		if (get_vmcs12(vcpu)->vmcs_link_pointer == -1ull)
-			return nested_vmx_failInvalid(vcpu);
-		vmcs12 = get_shadow_vmcs12(vcpu);
-	}
-
-	if (vmcs12_write_any(vmcs12, field, field_value) < 0)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_UNSUPPORTED_VMCS_COMPONENT);
-
-	/*
-	 * Do not track vmcs12 dirty-state if in guest-mode
-	 * as we actually dirty shadow vmcs12 instead of vmcs12.
-	 */
-	if (!is_guest_mode(vcpu)) {
-		switch (field) {
-#define SHADOW_FIELD_RW(x) case x:
-#include "vmx_shadow_fields.h"
-			/*
-			 * The fields that can be updated by L1 without a vmexit are
-			 * always updated in the vmcs02, the others go down the slow
-			 * path of prepare_vmcs02.
-			 */
-			break;
-		default:
-			vmx->nested.dirty_vmcs12 = true;
-			break;
-		}
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-static void set_current_vmptr(struct vcpu_vmx *vmx, gpa_t vmptr)
-{
-	vmx->nested.current_vmptr = vmptr;
-	if (enable_shadow_vmcs) {
-		vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
-			      SECONDARY_EXEC_SHADOW_VMCS);
-		vmcs_write64(VMCS_LINK_POINTER,
-			     __pa(vmx->vmcs01.shadow_vmcs));
-		vmx->nested.need_vmcs12_sync = true;
-	}
-	vmx->nested.dirty_vmcs12 = true;
-}
-
-/* Emulate the VMPTRLD instruction */
-static int handle_vmptrld(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	gpa_t vmptr;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (nested_vmx_get_vmptr(vcpu, &vmptr))
-		return 1;
-
-	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMPTRLD_INVALID_ADDRESS);
-
-	if (vmptr == vmx->nested.vmxon_ptr)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_VMPTRLD_VMXON_POINTER);
-
-	/* Forbid normal VMPTRLD if Enlightened version was used */
-	if (vmx->nested.hv_evmcs)
-		return 1;
-
-	if (vmx->nested.current_vmptr != vmptr) {
-		struct vmcs12 *new_vmcs12;
-		struct page *page;
-		page = kvm_vcpu_gpa_to_page(vcpu, vmptr);
-		if (is_error_page(page))
-			return nested_vmx_failInvalid(vcpu);
-
-		new_vmcs12 = kmap(page);
-		if (new_vmcs12->hdr.revision_id != VMCS12_REVISION ||
-		    (new_vmcs12->hdr.shadow_vmcs &&
-		     !nested_cpu_has_vmx_shadow_vmcs(vcpu))) {
-			kunmap(page);
-			kvm_release_page_clean(page);
-			return nested_vmx_failValid(vcpu,
-				VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID);
-		}
-
-		nested_release_vmcs12(vcpu);
-
-		/*
-		 * Load VMCS12 from guest memory since it is not already
-		 * cached.
-		 */
-		memcpy(vmx->nested.cached_vmcs12, new_vmcs12, VMCS12_SIZE);
-		kunmap(page);
-		kvm_release_page_clean(page);
-
-		set_current_vmptr(vmx, vmptr);
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-/*
- * This is an equivalent of the nested hypervisor executing the vmptrld
- * instruction.
- */
-static int nested_vmx_handle_enlightened_vmptrld(struct kvm_vcpu *vcpu,
-						 bool from_launch)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct hv_vp_assist_page assist_page;
-
-	if (likely(!vmx->nested.enlightened_vmcs_enabled))
-		return 1;
-
-	if (unlikely(!kvm_hv_get_assist_page(vcpu, &assist_page)))
-		return 1;
-
-	if (unlikely(!assist_page.enlighten_vmentry))
-		return 1;
-
-	if (unlikely(assist_page.current_nested_vmcs !=
-		     vmx->nested.hv_evmcs_vmptr)) {
-
-		if (!vmx->nested.hv_evmcs)
-			vmx->nested.current_vmptr = -1ull;
-
-		nested_release_evmcs(vcpu);
-
-		vmx->nested.hv_evmcs_page = kvm_vcpu_gpa_to_page(
-			vcpu, assist_page.current_nested_vmcs);
-
-		if (unlikely(is_error_page(vmx->nested.hv_evmcs_page)))
-			return 0;
-
-		vmx->nested.hv_evmcs = kmap(vmx->nested.hv_evmcs_page);
-
-		/*
-		 * Currently, KVM only supports eVMCS version 1
-		 * (== KVM_EVMCS_VERSION) and thus we expect guest to set this
-		 * value to first u32 field of eVMCS which should specify eVMCS
-		 * VersionNumber.
-		 *
-		 * Guest should be aware of supported eVMCS versions by host by
-		 * examining CPUID.0x4000000A.EAX[0:15]. Host userspace VMM is
-		 * expected to set this CPUID leaf according to the value
-		 * returned in vmcs_version from nested_enable_evmcs().
-		 *
-		 * However, it turns out that Microsoft Hyper-V fails to comply
-		 * to their own invented interface: When Hyper-V use eVMCS, it
-		 * just sets first u32 field of eVMCS to revision_id specified
-		 * in MSR_IA32_VMX_BASIC. Instead of used eVMCS version number
-		 * which is one of the supported versions specified in
-		 * CPUID.0x4000000A.EAX[0:15].
-		 *
-		 * To overcome Hyper-V bug, we accept here either a supported
-		 * eVMCS version or VMCS12 revision_id as valid values for first
-		 * u32 field of eVMCS.
-		 */
-		if ((vmx->nested.hv_evmcs->revision_id != KVM_EVMCS_VERSION) &&
-		    (vmx->nested.hv_evmcs->revision_id != VMCS12_REVISION)) {
-			nested_release_evmcs(vcpu);
-			return 0;
-		}
-
-		vmx->nested.dirty_vmcs12 = true;
-		/*
-		 * As we keep L2 state for one guest only 'hv_clean_fields' mask
-		 * can't be used when we switch between them. Reset it here for
-		 * simplicity.
-		 */
-		vmx->nested.hv_evmcs->hv_clean_fields &=
-			~HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
-		vmx->nested.hv_evmcs_vmptr = assist_page.current_nested_vmcs;
-
-		/*
-		 * Unlike normal vmcs12, enlightened vmcs12 is not fully
-		 * reloaded from guest's memory (read only fields, fields not
-		 * present in struct hv_enlightened_vmcs, ...). Make sure there
-		 * are no leftovers.
-		 */
-		if (from_launch) {
-			struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-			memset(vmcs12, 0, sizeof(*vmcs12));
-			vmcs12->hdr.revision_id = VMCS12_REVISION;
-		}
-
-	}
-	return 1;
-}
-
-/* Emulate the VMPTRST instruction */
-static int handle_vmptrst(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qual = vmcs_readl(EXIT_QUALIFICATION);
-	u32 instr_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	gpa_t current_vmptr = to_vmx(vcpu)->nested.current_vmptr;
-	struct x86_exception e;
-	gva_t gva;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (unlikely(to_vmx(vcpu)->nested.hv_evmcs))
-		return 1;
-
-	if (get_vmx_mem_address(vcpu, exit_qual, instr_info, true, &gva))
-		return 1;
-	/* *_system ok, nested_vmx_check_permission has verified cpl=0 */
-	if (kvm_write_guest_virt_system(vcpu, gva, (void *)&current_vmptr,
-					sizeof(gpa_t), &e)) {
-		kvm_inject_page_fault(vcpu, &e);
-		return 1;
-	}
-	return nested_vmx_succeed(vcpu);
-}
-
-/* Emulate the INVEPT instruction */
-static int handle_invept(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 vmx_instruction_info, types;
-	unsigned long type;
-	gva_t gva;
-	struct x86_exception e;
-	struct {
-		u64 eptp, gpa;
-	} operand;
-
-	if (!(vmx->nested.msrs.secondary_ctls_high &
-	      SECONDARY_EXEC_ENABLE_EPT) ||
-	    !(vmx->nested.msrs.ept_caps & VMX_EPT_INVEPT_BIT)) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
-
-	types = (vmx->nested.msrs.ept_caps >> VMX_EPT_EXTENT_SHIFT) & 6;
-
-	if (type >= 32 || !(types & (1 << type)))
-		return nested_vmx_failValid(vcpu,
-				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
-
-	/* According to the Intel VMX instruction reference, the memory
-	 * operand is read even if it isn't needed (e.g., for type==global)
-	 */
-	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
-			vmx_instruction_info, false, &gva))
-		return 1;
-	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
-		kvm_inject_page_fault(vcpu, &e);
-		return 1;
-	}
-
-	switch (type) {
-	case VMX_EPT_EXTENT_GLOBAL:
-	/*
-	 * TODO: track mappings and invalidate
-	 * single context requests appropriately
-	 */
-	case VMX_EPT_EXTENT_CONTEXT:
-		kvm_mmu_sync_roots(vcpu);
-		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
-		break;
-	default:
-		BUG_ON(1);
-		break;
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-static u16 nested_get_vpid02(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	return vmx->nested.vpid02 ? vmx->nested.vpid02 : vmx->vpid;
-}
-
-static int handle_invvpid(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 vmx_instruction_info;
-	unsigned long type, types;
-	gva_t gva;
-	struct x86_exception e;
-	struct {
-		u64 vpid;
-		u64 gla;
-	} operand;
-	u16 vpid02;
-
-	if (!(vmx->nested.msrs.secondary_ctls_high &
-	      SECONDARY_EXEC_ENABLE_VPID) ||
-			!(vmx->nested.msrs.vpid_caps & VMX_VPID_INVVPID_BIT)) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
-
-	types = (vmx->nested.msrs.vpid_caps &
-			VMX_VPID_EXTENT_SUPPORTED_MASK) >> 8;
-
-	if (type >= 32 || !(types & (1 << type)))
-		return nested_vmx_failValid(vcpu,
-			VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
-
-	/* according to the intel vmx instruction reference, the memory
-	 * operand is read even if it isn't needed (e.g., for type==global)
-	 */
-	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
-			vmx_instruction_info, false, &gva))
-		return 1;
-	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
-		kvm_inject_page_fault(vcpu, &e);
-		return 1;
-	}
-	if (operand.vpid >> 16)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
-
-	vpid02 = nested_get_vpid02(vcpu);
-	switch (type) {
-	case VMX_VPID_EXTENT_INDIVIDUAL_ADDR:
-		if (!operand.vpid ||
-		    is_noncanonical_address(operand.gla, vcpu))
-			return nested_vmx_failValid(vcpu,
-				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
-		if (cpu_has_vmx_invvpid_individual_addr()) {
-			__invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR,
-				vpid02, operand.gla);
-		} else
-			__vmx_flush_tlb(vcpu, vpid02, false);
-		break;
-	case VMX_VPID_EXTENT_SINGLE_CONTEXT:
-	case VMX_VPID_EXTENT_SINGLE_NON_GLOBAL:
-		if (!operand.vpid)
-			return nested_vmx_failValid(vcpu,
-				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
-		__vmx_flush_tlb(vcpu, vpid02, false);
-		break;
-	case VMX_VPID_EXTENT_ALL_CONTEXT:
-		__vmx_flush_tlb(vcpu, vpid02, false);
-		break;
-	default:
-		WARN_ON_ONCE(1);
-		return kvm_skip_emulated_instruction(vcpu);
-	}
-
-	return nested_vmx_succeed(vcpu);
-}
-
-static int handle_invpcid(struct kvm_vcpu *vcpu)
-{
-	u32 vmx_instruction_info;
-	unsigned long type;
-	bool pcid_enabled;
-	gva_t gva;
-	struct x86_exception e;
-	unsigned i;
-	unsigned long roots_to_free = 0;
-	struct {
-		u64 pcid;
-		u64 gla;
-	} operand;
-
-	if (!guest_cpuid_has(vcpu, X86_FEATURE_INVPCID)) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
-
-	if (type > 3) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	/* According to the Intel instruction reference, the memory operand
-	 * is read even if it isn't needed (e.g., for type==all)
-	 */
-	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
-				vmx_instruction_info, false, &gva))
-		return 1;
-
-	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
-		kvm_inject_page_fault(vcpu, &e);
-		return 1;
-	}
-
-	if (operand.pcid >> 12 != 0) {
-		kvm_inject_gp(vcpu, 0);
-		return 1;
-	}
-
-	pcid_enabled = kvm_read_cr4_bits(vcpu, X86_CR4_PCIDE);
-
-	switch (type) {
-	case INVPCID_TYPE_INDIV_ADDR:
-		if ((!pcid_enabled && (operand.pcid != 0)) ||
-		    is_noncanonical_address(operand.gla, vcpu)) {
-			kvm_inject_gp(vcpu, 0);
-			return 1;
-		}
-		kvm_mmu_invpcid_gva(vcpu, operand.gla, operand.pcid);
-		return kvm_skip_emulated_instruction(vcpu);
-
-	case INVPCID_TYPE_SINGLE_CTXT:
-		if (!pcid_enabled && (operand.pcid != 0)) {
-			kvm_inject_gp(vcpu, 0);
-			return 1;
-		}
-
-		if (kvm_get_active_pcid(vcpu) == operand.pcid) {
-			kvm_mmu_sync_roots(vcpu);
-			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
-		}
-
-		for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
-			if (kvm_get_pcid(vcpu, vcpu->arch.mmu->prev_roots[i].cr3)
-			    == operand.pcid)
-				roots_to_free |= KVM_MMU_ROOT_PREVIOUS(i);
-
-		kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, roots_to_free);
-		/*
-		 * If neither the current cr3 nor any of the prev_roots use the
-		 * given PCID, then nothing needs to be done here because a
-		 * resync will happen anyway before switching to any other CR3.
-		 */
-
-		return kvm_skip_emulated_instruction(vcpu);
-
-	case INVPCID_TYPE_ALL_NON_GLOBAL:
-		/*
-		 * Currently, KVM doesn't mark global entries in the shadow
-		 * page tables, so a non-global flush just degenerates to a
-		 * global flush. If needed, we could optimize this later by
-		 * keeping track of global entries in shadow page tables.
-		 */
-
-		/* fall-through */
-	case INVPCID_TYPE_ALL_INCL_GLOBAL:
-		kvm_mmu_unload(vcpu);
-		return kvm_skip_emulated_instruction(vcpu);
-
-	default:
-		BUG(); /* We have already checked above that type <= 3 */
-	}
-}
-
-static int handle_pml_full(struct kvm_vcpu *vcpu)
-{
-	unsigned long exit_qualification;
-
-	trace_kvm_pml_full(vcpu->vcpu_id);
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
-	/*
-	 * PML buffer FULL happened while executing iret from NMI,
-	 * "blocked by NMI" bit has to be set before next VM entry.
-	 */
-	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
-			enable_vnmi &&
-			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
-		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
-				GUEST_INTR_STATE_NMI);
-
-	/*
-	 * PML buffer already flushed at beginning of VMEXIT. Nothing to do
-	 * here.., and there's no userspace involvement needed for PML.
-	 */
-	return 1;
-}
-
-static int handle_preemption_timer(struct kvm_vcpu *vcpu)
-{
-	if (!to_vmx(vcpu)->req_immediate_exit)
-		kvm_lapic_expired_hv_timer(vcpu);
-	return 1;
-}
-
-static bool valid_ept_address(struct kvm_vcpu *vcpu, u64 address)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int maxphyaddr = cpuid_maxphyaddr(vcpu);
-
-	/* Check for memory type validity */
-	switch (address & VMX_EPTP_MT_MASK) {
-	case VMX_EPTP_MT_UC:
-		if (!(vmx->nested.msrs.ept_caps & VMX_EPTP_UC_BIT))
-			return false;
-		break;
-	case VMX_EPTP_MT_WB:
-		if (!(vmx->nested.msrs.ept_caps & VMX_EPTP_WB_BIT))
-			return false;
-		break;
-	default:
-		return false;
-	}
-
-	/* only 4 levels page-walk length are valid */
-	if ((address & VMX_EPTP_PWL_MASK) != VMX_EPTP_PWL_4)
-		return false;
-
-	/* Reserved bits should not be set */
-	if (address >> maxphyaddr || ((address >> 7) & 0x1f))
-		return false;
-
-	/* AD, if set, should be supported */
-	if (address & VMX_EPTP_AD_ENABLE_BIT) {
-		if (!(vmx->nested.msrs.ept_caps & VMX_EPT_AD_BIT))
-			return false;
-	}
-
-	return true;
-}
-
-static int nested_vmx_eptp_switching(struct kvm_vcpu *vcpu,
-				     struct vmcs12 *vmcs12)
-{
-	u32 index = vcpu->arch.regs[VCPU_REGS_RCX];
-	u64 address;
-	bool accessed_dirty;
-	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
-
-	if (!nested_cpu_has_eptp_switching(vmcs12) ||
-	    !nested_cpu_has_ept(vmcs12))
-		return 1;
-
-	if (index >= VMFUNC_EPTP_ENTRIES)
-		return 1;
-
-
-	if (kvm_vcpu_read_guest_page(vcpu, vmcs12->eptp_list_address >> PAGE_SHIFT,
-				     &address, index * 8, 8))
-		return 1;
-
-	accessed_dirty = !!(address & VMX_EPTP_AD_ENABLE_BIT);
-
-	/*
-	 * If the (L2) guest does a vmfunc to the currently
-	 * active ept pointer, we don't have to do anything else
-	 */
-	if (vmcs12->ept_pointer != address) {
-		if (!valid_ept_address(vcpu, address))
-			return 1;
-
-		kvm_mmu_unload(vcpu);
-		mmu->ept_ad = accessed_dirty;
-		mmu->mmu_role.base.ad_disabled = !accessed_dirty;
-		vmcs12->ept_pointer = address;
-		/*
-		 * TODO: Check what's the correct approach in case
-		 * mmu reload fails. Currently, we just let the next
-		 * reload potentially fail
-		 */
-		kvm_mmu_reload(vcpu);
-	}
-
-	return 0;
-}
-
-static int handle_vmfunc(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs12 *vmcs12;
-	u32 function = vcpu->arch.regs[VCPU_REGS_RAX];
-
-	/*
-	 * VMFUNC is only supported for nested guests, but we always enable the
-	 * secondary control for simplicity; for non-nested mode, fake that we
-	 * didn't by injecting #UD.
-	 */
-	if (!is_guest_mode(vcpu)) {
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-
-	vmcs12 = get_vmcs12(vcpu);
-	if ((vmcs12->vm_function_control & (1 << function)) == 0)
-		goto fail;
-
-	switch (function) {
-	case 0:
-		if (nested_vmx_eptp_switching(vcpu, vmcs12))
-			goto fail;
-		break;
-	default:
-		goto fail;
-	}
-	return kvm_skip_emulated_instruction(vcpu);
-
-fail:
-	nested_vmx_vmexit(vcpu, vmx->exit_reason,
-			  vmcs_read32(VM_EXIT_INTR_INFO),
-			  vmcs_readl(EXIT_QUALIFICATION));
-	return 1;
-}
-
-static int handle_encls(struct kvm_vcpu *vcpu)
-{
-	/*
-	 * SGX virtualization is not yet supported.  There is no software
-	 * enable bit for SGX, so we have to trap ENCLS and inject a #UD
-	 * to prevent the guest from executing ENCLS.
-	 */
-	kvm_queue_exception(vcpu, UD_VECTOR);
-	return 1;
-}
-
-/*
- * The exit handlers return 1 if the exit was handled fully and guest execution
- * may resume.  Otherwise they set the kvm_run parameter to indicate what needs
- * to be done to userspace and return 0.
- */
-static int (*const kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
-	[EXIT_REASON_EXCEPTION_NMI]           = handle_exception,
-	[EXIT_REASON_EXTERNAL_INTERRUPT]      = handle_external_interrupt,
-	[EXIT_REASON_TRIPLE_FAULT]            = handle_triple_fault,
-	[EXIT_REASON_NMI_WINDOW]	      = handle_nmi_window,
-	[EXIT_REASON_IO_INSTRUCTION]          = handle_io,
-	[EXIT_REASON_CR_ACCESS]               = handle_cr,
-	[EXIT_REASON_DR_ACCESS]               = handle_dr,
-	[EXIT_REASON_CPUID]                   = handle_cpuid,
-	[EXIT_REASON_MSR_READ]                = handle_rdmsr,
-	[EXIT_REASON_MSR_WRITE]               = handle_wrmsr,
-	[EXIT_REASON_PENDING_INTERRUPT]       = handle_interrupt_window,
-	[EXIT_REASON_HLT]                     = handle_halt,
-	[EXIT_REASON_INVD]		      = handle_invd,
-	[EXIT_REASON_INVLPG]		      = handle_invlpg,
-	[EXIT_REASON_RDPMC]                   = handle_rdpmc,
-	[EXIT_REASON_VMCALL]                  = handle_vmcall,
-	[EXIT_REASON_VMCLEAR]	              = handle_vmclear,
-	[EXIT_REASON_VMLAUNCH]                = handle_vmlaunch,
-	[EXIT_REASON_VMPTRLD]                 = handle_vmptrld,
-	[EXIT_REASON_VMPTRST]                 = handle_vmptrst,
-	[EXIT_REASON_VMREAD]                  = handle_vmread,
-	[EXIT_REASON_VMRESUME]                = handle_vmresume,
-	[EXIT_REASON_VMWRITE]                 = handle_vmwrite,
-	[EXIT_REASON_VMOFF]                   = handle_vmoff,
-	[EXIT_REASON_VMON]                    = handle_vmon,
-	[EXIT_REASON_TPR_BELOW_THRESHOLD]     = handle_tpr_below_threshold,
-	[EXIT_REASON_APIC_ACCESS]             = handle_apic_access,
-	[EXIT_REASON_APIC_WRITE]              = handle_apic_write,
-	[EXIT_REASON_EOI_INDUCED]             = handle_apic_eoi_induced,
-	[EXIT_REASON_WBINVD]                  = handle_wbinvd,
-	[EXIT_REASON_XSETBV]                  = handle_xsetbv,
-	[EXIT_REASON_TASK_SWITCH]             = handle_task_switch,
-	[EXIT_REASON_MCE_DURING_VMENTRY]      = handle_machine_check,
-	[EXIT_REASON_GDTR_IDTR]		      = handle_desc,
-	[EXIT_REASON_LDTR_TR]		      = handle_desc,
-	[EXIT_REASON_EPT_VIOLATION]	      = handle_ept_violation,
-	[EXIT_REASON_EPT_MISCONFIG]           = handle_ept_misconfig,
-	[EXIT_REASON_PAUSE_INSTRUCTION]       = handle_pause,
-	[EXIT_REASON_MWAIT_INSTRUCTION]	      = handle_mwait,
-	[EXIT_REASON_MONITOR_TRAP_FLAG]       = handle_monitor_trap,
-	[EXIT_REASON_MONITOR_INSTRUCTION]     = handle_monitor,
-	[EXIT_REASON_INVEPT]                  = handle_invept,
-	[EXIT_REASON_INVVPID]                 = handle_invvpid,
-	[EXIT_REASON_RDRAND]                  = handle_invalid_op,
-	[EXIT_REASON_RDSEED]                  = handle_invalid_op,
-	[EXIT_REASON_XSAVES]                  = handle_xsaves,
-	[EXIT_REASON_XRSTORS]                 = handle_xrstors,
-	[EXIT_REASON_PML_FULL]		      = handle_pml_full,
-	[EXIT_REASON_INVPCID]                 = handle_invpcid,
-	[EXIT_REASON_VMFUNC]                  = handle_vmfunc,
-	[EXIT_REASON_PREEMPTION_TIMER]	      = handle_preemption_timer,
-	[EXIT_REASON_ENCLS]		      = handle_encls,
-};
-
-static const int kvm_vmx_max_exit_handlers =
-	ARRAY_SIZE(kvm_vmx_exit_handlers);
-
-static bool nested_vmx_exit_handled_io(struct kvm_vcpu *vcpu,
-				       struct vmcs12 *vmcs12)
-{
-	unsigned long exit_qualification;
-	gpa_t bitmap, last_bitmap;
-	unsigned int port;
-	int size;
-	u8 b;
-
-	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
-		return nested_cpu_has(vmcs12, CPU_BASED_UNCOND_IO_EXITING);
-
-	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-
-	port = exit_qualification >> 16;
-	size = (exit_qualification & 7) + 1;
-
-	last_bitmap = (gpa_t)-1;
-	b = -1;
-
-	while (size > 0) {
-		if (port < 0x8000)
-			bitmap = vmcs12->io_bitmap_a;
-		else if (port < 0x10000)
-			bitmap = vmcs12->io_bitmap_b;
-		else
-			return true;
-		bitmap += (port & 0x7fff) / 8;
-
-		if (last_bitmap != bitmap)
-			if (kvm_vcpu_read_guest(vcpu, bitmap, &b, 1))
-				return true;
-		if (b & (1 << (port & 7)))
-			return true;
-
-		port++;
-		size--;
-		last_bitmap = bitmap;
-	}
-
-	return false;
-}
-
-/*
- * Return 1 if we should exit from L2 to L1 to handle an MSR access access,
- * rather than handle it ourselves in L0. I.e., check whether L1 expressed
- * disinterest in the current event (read or write a specific MSR) by using an
- * MSR bitmap. This may be the case even when L0 doesn't use MSR bitmaps.
- */
-static bool nested_vmx_exit_handled_msr(struct kvm_vcpu *vcpu,
-	struct vmcs12 *vmcs12, u32 exit_reason)
-{
-	u32 msr_index = vcpu->arch.regs[VCPU_REGS_RCX];
-	gpa_t bitmap;
-
-	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
-		return true;
-
-	/*
-	 * The MSR_BITMAP page is divided into four 1024-byte bitmaps,
-	 * for the four combinations of read/write and low/high MSR numbers.
-	 * First we need to figure out which of the four to use:
-	 */
-	bitmap = vmcs12->msr_bitmap;
-	if (exit_reason == EXIT_REASON_MSR_WRITE)
-		bitmap += 2048;
-	if (msr_index >= 0xc0000000) {
-		msr_index -= 0xc0000000;
-		bitmap += 1024;
-	}
-
-	/* Then read the msr_index'th bit from this bitmap: */
-	if (msr_index < 1024*8) {
-		unsigned char b;
-		if (kvm_vcpu_read_guest(vcpu, bitmap + msr_index/8, &b, 1))
-			return true;
-		return 1 & (b >> (msr_index & 7));
-	} else
-		return true; /* let L1 handle the wrong parameter */
-}
-
-/*
- * Return 1 if we should exit from L2 to L1 to handle a CR access exit,
- * rather than handle it ourselves in L0. I.e., check if L1 wanted to
- * intercept (via guest_host_mask etc.) the current event.
- */
-static bool nested_vmx_exit_handled_cr(struct kvm_vcpu *vcpu,
-	struct vmcs12 *vmcs12)
-{
-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
-	int cr = exit_qualification & 15;
-	int reg;
-	unsigned long val;
-
-	switch ((exit_qualification >> 4) & 3) {
-	case 0: /* mov to cr */
-		reg = (exit_qualification >> 8) & 15;
-		val = kvm_register_readl(vcpu, reg);
-		switch (cr) {
-		case 0:
-			if (vmcs12->cr0_guest_host_mask &
-			    (val ^ vmcs12->cr0_read_shadow))
-				return true;
-			break;
-		case 3:
-			if ((vmcs12->cr3_target_count >= 1 &&
-					vmcs12->cr3_target_value0 == val) ||
-				(vmcs12->cr3_target_count >= 2 &&
-					vmcs12->cr3_target_value1 == val) ||
-				(vmcs12->cr3_target_count >= 3 &&
-					vmcs12->cr3_target_value2 == val) ||
-				(vmcs12->cr3_target_count >= 4 &&
-					vmcs12->cr3_target_value3 == val))
-				return false;
-			if (nested_cpu_has(vmcs12, CPU_BASED_CR3_LOAD_EXITING))
-				return true;
-			break;
-		case 4:
-			if (vmcs12->cr4_guest_host_mask &
-			    (vmcs12->cr4_read_shadow ^ val))
-				return true;
-			break;
-		case 8:
-			if (nested_cpu_has(vmcs12, CPU_BASED_CR8_LOAD_EXITING))
-				return true;
-			break;
-		}
-		break;
-	case 2: /* clts */
-		if ((vmcs12->cr0_guest_host_mask & X86_CR0_TS) &&
-		    (vmcs12->cr0_read_shadow & X86_CR0_TS))
-			return true;
-		break;
-	case 1: /* mov from cr */
-		switch (cr) {
-		case 3:
-			if (vmcs12->cpu_based_vm_exec_control &
-			    CPU_BASED_CR3_STORE_EXITING)
-				return true;
-			break;
-		case 8:
-			if (vmcs12->cpu_based_vm_exec_control &
-			    CPU_BASED_CR8_STORE_EXITING)
-				return true;
-			break;
-		}
-		break;
-	case 3: /* lmsw */
-		/*
-		 * lmsw can change bits 1..3 of cr0, and only set bit 0 of
-		 * cr0. Other attempted changes are ignored, with no exit.
-		 */
-		val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
-		if (vmcs12->cr0_guest_host_mask & 0xe &
-		    (val ^ vmcs12->cr0_read_shadow))
-			return true;
-		if ((vmcs12->cr0_guest_host_mask & 0x1) &&
-		    !(vmcs12->cr0_read_shadow & 0x1) &&
-		    (val & 0x1))
-			return true;
-		break;
-	}
-	return false;
-}
-
-static bool nested_vmx_exit_handled_vmcs_access(struct kvm_vcpu *vcpu,
-	struct vmcs12 *vmcs12, gpa_t bitmap)
-{
-	u32 vmx_instruction_info;
-	unsigned long field;
-	u8 b;
-
-	if (!nested_cpu_has_shadow_vmcs(vmcs12))
-		return true;
-
-	/* Decode instruction info and find the field to access */
-	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-	field = kvm_register_read(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
-
-	/* Out-of-range fields always cause a VM exit from L2 to L1 */
-	if (field >> 15)
-		return true;
-
-	if (kvm_vcpu_read_guest(vcpu, bitmap + field/8, &b, 1))
-		return true;
-
-	return 1 & (b >> (field & 7));
-}
-
-/*
- * Return 1 if we should exit from L2 to L1 to handle an exit, or 0 if we
- * should handle it ourselves in L0 (and then continue L2). Only call this
- * when in is_guest_mode (L2).
- */
-static bool nested_vmx_exit_reflected(struct kvm_vcpu *vcpu, u32 exit_reason)
-{
-	u32 intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	if (vmx->nested.nested_run_pending)
-		return false;
-
-	if (unlikely(vmx->fail)) {
-		pr_info_ratelimited("%s failed vm entry %x\n", __func__,
-				    vmcs_read32(VM_INSTRUCTION_ERROR));
-		return true;
-	}
-
-	/*
-	 * The host physical addresses of some pages of guest memory
-	 * are loaded into the vmcs02 (e.g. vmcs12's Virtual APIC
-	 * Page). The CPU may write to these pages via their host
-	 * physical address while L2 is running, bypassing any
-	 * address-translation-based dirty tracking (e.g. EPT write
-	 * protection).
-	 *
-	 * Mark them dirty on every exit from L2 to prevent them from
-	 * getting out of sync with dirty tracking.
-	 */
-	nested_mark_vmcs12_pages_dirty(vcpu);
-
-	trace_kvm_nested_vmexit(kvm_rip_read(vcpu), exit_reason,
-				vmcs_readl(EXIT_QUALIFICATION),
-				vmx->idt_vectoring_info,
-				intr_info,
-				vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
-				KVM_ISA_VMX);
-
-	switch (exit_reason) {
-	case EXIT_REASON_EXCEPTION_NMI:
-		if (is_nmi(intr_info))
-			return false;
-		else if (is_page_fault(intr_info))
-			return !vmx->vcpu.arch.apf.host_apf_reason && enable_ept;
-		else if (is_debug(intr_info) &&
-			 vcpu->guest_debug &
-			 (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
-			return false;
-		else if (is_breakpoint(intr_info) &&
-			 vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
-			return false;
-		return vmcs12->exception_bitmap &
-				(1u << (intr_info & INTR_INFO_VECTOR_MASK));
-	case EXIT_REASON_EXTERNAL_INTERRUPT:
-		return false;
-	case EXIT_REASON_TRIPLE_FAULT:
-		return true;
-	case EXIT_REASON_PENDING_INTERRUPT:
-		return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_INTR_PENDING);
-	case EXIT_REASON_NMI_WINDOW:
-		return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING);
-	case EXIT_REASON_TASK_SWITCH:
-		return true;
-	case EXIT_REASON_CPUID:
-		return true;
-	case EXIT_REASON_HLT:
-		return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING);
-	case EXIT_REASON_INVD:
-		return true;
-	case EXIT_REASON_INVLPG:
-		return nested_cpu_has(vmcs12, CPU_BASED_INVLPG_EXITING);
-	case EXIT_REASON_RDPMC:
-		return nested_cpu_has(vmcs12, CPU_BASED_RDPMC_EXITING);
-	case EXIT_REASON_RDRAND:
-		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDRAND_EXITING);
-	case EXIT_REASON_RDSEED:
-		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDSEED_EXITING);
-	case EXIT_REASON_RDTSC: case EXIT_REASON_RDTSCP:
-		return nested_cpu_has(vmcs12, CPU_BASED_RDTSC_EXITING);
-	case EXIT_REASON_VMREAD:
-		return nested_vmx_exit_handled_vmcs_access(vcpu, vmcs12,
-			vmcs12->vmread_bitmap);
-	case EXIT_REASON_VMWRITE:
-		return nested_vmx_exit_handled_vmcs_access(vcpu, vmcs12,
-			vmcs12->vmwrite_bitmap);
-	case EXIT_REASON_VMCALL: case EXIT_REASON_VMCLEAR:
-	case EXIT_REASON_VMLAUNCH: case EXIT_REASON_VMPTRLD:
-	case EXIT_REASON_VMPTRST: case EXIT_REASON_VMRESUME:
-	case EXIT_REASON_VMOFF: case EXIT_REASON_VMON:
-	case EXIT_REASON_INVEPT: case EXIT_REASON_INVVPID:
-		/*
-		 * VMX instructions trap unconditionally. This allows L1 to
-		 * emulate them for its L2 guest, i.e., allows 3-level nesting!
-		 */
-		return true;
-	case EXIT_REASON_CR_ACCESS:
-		return nested_vmx_exit_handled_cr(vcpu, vmcs12);
-	case EXIT_REASON_DR_ACCESS:
-		return nested_cpu_has(vmcs12, CPU_BASED_MOV_DR_EXITING);
-	case EXIT_REASON_IO_INSTRUCTION:
-		return nested_vmx_exit_handled_io(vcpu, vmcs12);
-	case EXIT_REASON_GDTR_IDTR: case EXIT_REASON_LDTR_TR:
-		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_DESC);
-	case EXIT_REASON_MSR_READ:
-	case EXIT_REASON_MSR_WRITE:
-		return nested_vmx_exit_handled_msr(vcpu, vmcs12, exit_reason);
-	case EXIT_REASON_INVALID_STATE:
-		return true;
-	case EXIT_REASON_MWAIT_INSTRUCTION:
-		return nested_cpu_has(vmcs12, CPU_BASED_MWAIT_EXITING);
-	case EXIT_REASON_MONITOR_TRAP_FLAG:
-		return nested_cpu_has(vmcs12, CPU_BASED_MONITOR_TRAP_FLAG);
-	case EXIT_REASON_MONITOR_INSTRUCTION:
-		return nested_cpu_has(vmcs12, CPU_BASED_MONITOR_EXITING);
-	case EXIT_REASON_PAUSE_INSTRUCTION:
-		return nested_cpu_has(vmcs12, CPU_BASED_PAUSE_EXITING) ||
-			nested_cpu_has2(vmcs12,
-				SECONDARY_EXEC_PAUSE_LOOP_EXITING);
-	case EXIT_REASON_MCE_DURING_VMENTRY:
-		return false;
-	case EXIT_REASON_TPR_BELOW_THRESHOLD:
-		return nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW);
-	case EXIT_REASON_APIC_ACCESS:
-	case EXIT_REASON_APIC_WRITE:
-	case EXIT_REASON_EOI_INDUCED:
-		/*
-		 * The controls for "virtualize APIC accesses," "APIC-
-		 * register virtualization," and "virtual-interrupt
-		 * delivery" only come from vmcs12.
-		 */
-		return true;
-	case EXIT_REASON_EPT_VIOLATION:
-		/*
-		 * L0 always deals with the EPT violation. If nested EPT is
-		 * used, and the nested mmu code discovers that the address is
-		 * missing in the guest EPT table (EPT12), the EPT violation
-		 * will be injected with nested_ept_inject_page_fault()
-		 */
-		return false;
-	case EXIT_REASON_EPT_MISCONFIG:
-		/*
-		 * L2 never uses directly L1's EPT, but rather L0's own EPT
-		 * table (shadow on EPT) or a merged EPT table that L0 built
-		 * (EPT on EPT). So any problems with the structure of the
-		 * table is L0's fault.
-		 */
-		return false;
-	case EXIT_REASON_INVPCID:
-		return
-			nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_INVPCID) &&
-			nested_cpu_has(vmcs12, CPU_BASED_INVLPG_EXITING);
-	case EXIT_REASON_WBINVD:
-		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_WBINVD_EXITING);
-	case EXIT_REASON_XSETBV:
-		return true;
-	case EXIT_REASON_XSAVES: case EXIT_REASON_XRSTORS:
-		/*
-		 * This should never happen, since it is not possible to
-		 * set XSS to a non-zero value---neither in L1 nor in L2.
-		 * If if it were, XSS would have to be checked against
-		 * the XSS exit bitmap in vmcs12.
-		 */
-		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_XSAVES);
-	case EXIT_REASON_PREEMPTION_TIMER:
-		return false;
-	case EXIT_REASON_PML_FULL:
-		/* We emulate PML support to L1. */
-		return false;
-	case EXIT_REASON_VMFUNC:
-		/* VM functions are emulated through L2->L0 vmexits. */
-		return false;
-	case EXIT_REASON_ENCLS:
-		/* SGX is never exposed to L1 */
-		return false;
-	default:
-		return true;
-	}
-}
-
-static int nested_vmx_reflect_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason)
-{
-	u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-
-	/*
-	 * At this point, the exit interruption info in exit_intr_info
-	 * is only valid for EXCEPTION_NMI exits.  For EXTERNAL_INTERRUPT
-	 * we need to query the in-kernel LAPIC.
-	 */
-	WARN_ON(exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT);
-	if ((exit_intr_info &
-	     (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) ==
-	    (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) {
-		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-		vmcs12->vm_exit_intr_error_code =
-			vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
-	}
-
-	nested_vmx_vmexit(vcpu, exit_reason, exit_intr_info,
-			  vmcs_readl(EXIT_QUALIFICATION));
-	return 1;
-}
-
-static void vmx_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2)
-{
-	*info1 = vmcs_readl(EXIT_QUALIFICATION);
-	*info2 = vmcs_read32(VM_EXIT_INTR_INFO);
-}
-
-static void vmx_destroy_pml_buffer(struct vcpu_vmx *vmx)
-{
-	if (vmx->pml_pg) {
-		__free_page(vmx->pml_pg);
-		vmx->pml_pg = NULL;
-	}
-}
-
-static void vmx_flush_pml_buffer(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u64 *pml_buf;
-	u16 pml_idx;
-
-	pml_idx = vmcs_read16(GUEST_PML_INDEX);
-
-	/* Do nothing if PML buffer is empty */
-	if (pml_idx == (PML_ENTITY_NUM - 1))
-		return;
-
-	/* PML index always points to next available PML buffer entity */
-	if (pml_idx >= PML_ENTITY_NUM)
-		pml_idx = 0;
-	else
-		pml_idx++;
-
-	pml_buf = page_address(vmx->pml_pg);
-	for (; pml_idx < PML_ENTITY_NUM; pml_idx++) {
-		u64 gpa;
-
-		gpa = pml_buf[pml_idx];
-		WARN_ON(gpa & (PAGE_SIZE - 1));
-		kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
-	}
-
-	/* reset PML index */
-	vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
-}
-
-/*
- * Flush all vcpus' PML buffer and update logged GPAs to dirty_bitmap.
- * Called before reporting dirty_bitmap to userspace.
- */
-static void kvm_flush_pml_buffers(struct kvm *kvm)
-{
-	int i;
-	struct kvm_vcpu *vcpu;
-	/*
-	 * We only need to kick vcpu out of guest mode here, as PML buffer
-	 * is flushed at beginning of all VMEXITs, and it's obvious that only
-	 * vcpus running in guest are possible to have unflushed GPAs in PML
-	 * buffer.
-	 */
-	kvm_for_each_vcpu(i, vcpu, kvm)
-		kvm_vcpu_kick(vcpu);
-}
-
-static void vmx_dump_sel(char *name, uint32_t sel)
-{
-	pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n",
-	       name, vmcs_read16(sel),
-	       vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR),
-	       vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR),
-	       vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR));
-}
-
-static void vmx_dump_dtsel(char *name, uint32_t limit)
-{
-	pr_err("%s                           limit=0x%08x, base=0x%016lx\n",
-	       name, vmcs_read32(limit),
-	       vmcs_readl(limit + GUEST_GDTR_BASE - GUEST_GDTR_LIMIT));
-}
-
-static void dump_vmcs(void)
-{
-	u32 vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
-	u32 vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
-	u32 cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	u32 pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
-	u32 secondary_exec_control = 0;
-	unsigned long cr4 = vmcs_readl(GUEST_CR4);
-	u64 efer = vmcs_read64(GUEST_IA32_EFER);
-	int i, n;
-
-	if (cpu_has_secondary_exec_ctrls())
-		secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
-
-	pr_err("*** Guest State ***\n");
-	pr_err("CR0: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
-	       vmcs_readl(GUEST_CR0), vmcs_readl(CR0_READ_SHADOW),
-	       vmcs_readl(CR0_GUEST_HOST_MASK));
-	pr_err("CR4: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
-	       cr4, vmcs_readl(CR4_READ_SHADOW), vmcs_readl(CR4_GUEST_HOST_MASK));
-	pr_err("CR3 = 0x%016lx\n", vmcs_readl(GUEST_CR3));
-	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT) &&
-	    (cr4 & X86_CR4_PAE) && !(efer & EFER_LMA))
-	{
-		pr_err("PDPTR0 = 0x%016llx  PDPTR1 = 0x%016llx\n",
-		       vmcs_read64(GUEST_PDPTR0), vmcs_read64(GUEST_PDPTR1));
-		pr_err("PDPTR2 = 0x%016llx  PDPTR3 = 0x%016llx\n",
-		       vmcs_read64(GUEST_PDPTR2), vmcs_read64(GUEST_PDPTR3));
-	}
-	pr_err("RSP = 0x%016lx  RIP = 0x%016lx\n",
-	       vmcs_readl(GUEST_RSP), vmcs_readl(GUEST_RIP));
-	pr_err("RFLAGS=0x%08lx         DR7 = 0x%016lx\n",
-	       vmcs_readl(GUEST_RFLAGS), vmcs_readl(GUEST_DR7));
-	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
-	       vmcs_readl(GUEST_SYSENTER_ESP),
-	       vmcs_read32(GUEST_SYSENTER_CS), vmcs_readl(GUEST_SYSENTER_EIP));
-	vmx_dump_sel("CS:  ", GUEST_CS_SELECTOR);
-	vmx_dump_sel("DS:  ", GUEST_DS_SELECTOR);
-	vmx_dump_sel("SS:  ", GUEST_SS_SELECTOR);
-	vmx_dump_sel("ES:  ", GUEST_ES_SELECTOR);
-	vmx_dump_sel("FS:  ", GUEST_FS_SELECTOR);
-	vmx_dump_sel("GS:  ", GUEST_GS_SELECTOR);
-	vmx_dump_dtsel("GDTR:", GUEST_GDTR_LIMIT);
-	vmx_dump_sel("LDTR:", GUEST_LDTR_SELECTOR);
-	vmx_dump_dtsel("IDTR:", GUEST_IDTR_LIMIT);
-	vmx_dump_sel("TR:  ", GUEST_TR_SELECTOR);
-	if ((vmexit_ctl & (VM_EXIT_SAVE_IA32_PAT | VM_EXIT_SAVE_IA32_EFER)) ||
-	    (vmentry_ctl & (VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_LOAD_IA32_EFER)))
-		pr_err("EFER =     0x%016llx  PAT = 0x%016llx\n",
-		       efer, vmcs_read64(GUEST_IA32_PAT));
-	pr_err("DebugCtl = 0x%016llx  DebugExceptions = 0x%016lx\n",
-	       vmcs_read64(GUEST_IA32_DEBUGCTL),
-	       vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS));
-	if (cpu_has_load_perf_global_ctrl &&
-	    vmentry_ctl & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
-		pr_err("PerfGlobCtl = 0x%016llx\n",
-		       vmcs_read64(GUEST_IA32_PERF_GLOBAL_CTRL));
-	if (vmentry_ctl & VM_ENTRY_LOAD_BNDCFGS)
-		pr_err("BndCfgS = 0x%016llx\n", vmcs_read64(GUEST_BNDCFGS));
-	pr_err("Interruptibility = %08x  ActivityState = %08x\n",
-	       vmcs_read32(GUEST_INTERRUPTIBILITY_INFO),
-	       vmcs_read32(GUEST_ACTIVITY_STATE));
-	if (secondary_exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
-		pr_err("InterruptStatus = %04x\n",
-		       vmcs_read16(GUEST_INTR_STATUS));
-
-	pr_err("*** Host State ***\n");
-	pr_err("RIP = 0x%016lx  RSP = 0x%016lx\n",
-	       vmcs_readl(HOST_RIP), vmcs_readl(HOST_RSP));
-	pr_err("CS=%04x SS=%04x DS=%04x ES=%04x FS=%04x GS=%04x TR=%04x\n",
-	       vmcs_read16(HOST_CS_SELECTOR), vmcs_read16(HOST_SS_SELECTOR),
-	       vmcs_read16(HOST_DS_SELECTOR), vmcs_read16(HOST_ES_SELECTOR),
-	       vmcs_read16(HOST_FS_SELECTOR), vmcs_read16(HOST_GS_SELECTOR),
-	       vmcs_read16(HOST_TR_SELECTOR));
-	pr_err("FSBase=%016lx GSBase=%016lx TRBase=%016lx\n",
-	       vmcs_readl(HOST_FS_BASE), vmcs_readl(HOST_GS_BASE),
-	       vmcs_readl(HOST_TR_BASE));
-	pr_err("GDTBase=%016lx IDTBase=%016lx\n",
-	       vmcs_readl(HOST_GDTR_BASE), vmcs_readl(HOST_IDTR_BASE));
-	pr_err("CR0=%016lx CR3=%016lx CR4=%016lx\n",
-	       vmcs_readl(HOST_CR0), vmcs_readl(HOST_CR3),
-	       vmcs_readl(HOST_CR4));
-	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
-	       vmcs_readl(HOST_IA32_SYSENTER_ESP),
-	       vmcs_read32(HOST_IA32_SYSENTER_CS),
-	       vmcs_readl(HOST_IA32_SYSENTER_EIP));
-	if (vmexit_ctl & (VM_EXIT_LOAD_IA32_PAT | VM_EXIT_LOAD_IA32_EFER))
-		pr_err("EFER = 0x%016llx  PAT = 0x%016llx\n",
-		       vmcs_read64(HOST_IA32_EFER),
-		       vmcs_read64(HOST_IA32_PAT));
-	if (cpu_has_load_perf_global_ctrl &&
-	    vmexit_ctl & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
-		pr_err("PerfGlobCtl = 0x%016llx\n",
-		       vmcs_read64(HOST_IA32_PERF_GLOBAL_CTRL));
-
-	pr_err("*** Control State ***\n");
-	pr_err("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n",
-	       pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control);
-	pr_err("EntryControls=%08x ExitControls=%08x\n", vmentry_ctl, vmexit_ctl);
-	pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%08x\n",
-	       vmcs_read32(EXCEPTION_BITMAP),
-	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MASK),
-	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MATCH));
-	pr_err("VMEntry: intr_info=%08x errcode=%08x ilen=%08x\n",
-	       vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
-	       vmcs_read32(VM_ENTRY_EXCEPTION_ERROR_CODE),
-	       vmcs_read32(VM_ENTRY_INSTRUCTION_LEN));
-	pr_err("VMExit: intr_info=%08x errcode=%08x ilen=%08x\n",
-	       vmcs_read32(VM_EXIT_INTR_INFO),
-	       vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
-	       vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
-	pr_err("        reason=%08x qualification=%016lx\n",
-	       vmcs_read32(VM_EXIT_REASON), vmcs_readl(EXIT_QUALIFICATION));
-	pr_err("IDTVectoring: info=%08x errcode=%08x\n",
-	       vmcs_read32(IDT_VECTORING_INFO_FIELD),
-	       vmcs_read32(IDT_VECTORING_ERROR_CODE));
-	pr_err("TSC Offset = 0x%016llx\n", vmcs_read64(TSC_OFFSET));
-	if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING)
-		pr_err("TSC Multiplier = 0x%016llx\n",
-		       vmcs_read64(TSC_MULTIPLIER));
-	if (cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW)
-		pr_err("TPR Threshold = 0x%02x\n", vmcs_read32(TPR_THRESHOLD));
-	if (pin_based_exec_ctrl & PIN_BASED_POSTED_INTR)
-		pr_err("PostedIntrVec = 0x%02x\n", vmcs_read16(POSTED_INTR_NV));
-	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT))
-		pr_err("EPT pointer = 0x%016llx\n", vmcs_read64(EPT_POINTER));
-	n = vmcs_read32(CR3_TARGET_COUNT);
-	for (i = 0; i + 1 < n; i += 4)
-		pr_err("CR3 target%u=%016lx target%u=%016lx\n",
-		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2),
-		       i + 1, vmcs_readl(CR3_TARGET_VALUE0 + i * 2 + 2));
-	if (i < n)
-		pr_err("CR3 target%u=%016lx\n",
-		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2));
-	if (secondary_exec_control & SECONDARY_EXEC_PAUSE_LOOP_EXITING)
-		pr_err("PLE Gap=%08x Window=%08x\n",
-		       vmcs_read32(PLE_GAP), vmcs_read32(PLE_WINDOW));
-	if (secondary_exec_control & SECONDARY_EXEC_ENABLE_VPID)
-		pr_err("Virtual processor ID = 0x%04x\n",
-		       vmcs_read16(VIRTUAL_PROCESSOR_ID));
-}
-
-/*
- * The guest has exited.  See if we can fix it or if we need userspace
- * assistance.
- */
-static int vmx_handle_exit(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 exit_reason = vmx->exit_reason;
-	u32 vectoring_info = vmx->idt_vectoring_info;
-
-	trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX);
-
-	/*
-	 * Flush logged GPAs PML buffer, this will make dirty_bitmap more
-	 * updated. Another good is, in kvm_vm_ioctl_get_dirty_log, before
-	 * querying dirty_bitmap, we only need to kick all vcpus out of guest
-	 * mode as if vcpus is in root mode, the PML buffer must has been
-	 * flushed already.
-	 */
-	if (enable_pml)
-		vmx_flush_pml_buffer(vcpu);
-
-	/* If guest state is invalid, start emulating */
-	if (vmx->emulation_required)
-		return handle_invalid_guest_state(vcpu);
-
-	if (is_guest_mode(vcpu) && nested_vmx_exit_reflected(vcpu, exit_reason))
-		return nested_vmx_reflect_vmexit(vcpu, exit_reason);
-
-	if (exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY) {
-		dump_vmcs();
-		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
-		vcpu->run->fail_entry.hardware_entry_failure_reason
-			= exit_reason;
-		return 0;
-	}
-
-	if (unlikely(vmx->fail)) {
-		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
-		vcpu->run->fail_entry.hardware_entry_failure_reason
-			= vmcs_read32(VM_INSTRUCTION_ERROR);
-		return 0;
-	}
-
-	/*
-	 * Note:
-	 * Do not try to fix EXIT_REASON_EPT_MISCONFIG if it caused by
-	 * delivery event since it indicates guest is accessing MMIO.
-	 * The vm-exit can be triggered again after return to guest that
-	 * will cause infinite loop.
-	 */
-	if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
-			(exit_reason != EXIT_REASON_EXCEPTION_NMI &&
-			exit_reason != EXIT_REASON_EPT_VIOLATION &&
-			exit_reason != EXIT_REASON_PML_FULL &&
-			exit_reason != EXIT_REASON_TASK_SWITCH)) {
-		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
-		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
-		vcpu->run->internal.ndata = 3;
-		vcpu->run->internal.data[0] = vectoring_info;
-		vcpu->run->internal.data[1] = exit_reason;
-		vcpu->run->internal.data[2] = vcpu->arch.exit_qualification;
-		if (exit_reason == EXIT_REASON_EPT_MISCONFIG) {
-			vcpu->run->internal.ndata++;
-			vcpu->run->internal.data[3] =
-				vmcs_read64(GUEST_PHYSICAL_ADDRESS);
-		}
-		return 0;
-	}
-
-	if (unlikely(!enable_vnmi &&
-		     vmx->loaded_vmcs->soft_vnmi_blocked)) {
-		if (vmx_interrupt_allowed(vcpu)) {
-			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
-		} else if (vmx->loaded_vmcs->vnmi_blocked_time > 1000000000LL &&
-			   vcpu->arch.nmi_pending) {
-			/*
-			 * This CPU don't support us in finding the end of an
-			 * NMI-blocked window if the guest runs with IRQs
-			 * disabled. So we pull the trigger after 1 s of
-			 * futile waiting, but inform the user about this.
-			 */
-			printk(KERN_WARNING "%s: Breaking out of NMI-blocked "
-			       "state on VCPU %d after 1 s timeout\n",
-			       __func__, vcpu->vcpu_id);
-			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
-		}
-	}
-
-	if (exit_reason < kvm_vmx_max_exit_handlers
-	    && kvm_vmx_exit_handlers[exit_reason])
-		return kvm_vmx_exit_handlers[exit_reason](vcpu);
-	else {
-		vcpu_unimpl(vcpu, "vmx: unexpected exit reason 0x%x\n",
-				exit_reason);
-		kvm_queue_exception(vcpu, UD_VECTOR);
-		return 1;
-	}
-}
-
-/*
- * Software based L1D cache flush which is used when microcode providing
- * the cache control MSR is not loaded.
- *
- * The L1D cache is 32 KiB on Nehalem and later microarchitectures, but to
- * flush it is required to read in 64 KiB because the replacement algorithm
- * is not exactly LRU. This could be sized at runtime via topology
- * information but as all relevant affected CPUs have 32KiB L1D cache size
- * there is no point in doing so.
- */
-static void vmx_l1d_flush(struct kvm_vcpu *vcpu)
-{
-	int size = PAGE_SIZE << L1D_CACHE_ORDER;
-
-	/*
-	 * This code is only executed when the the flush mode is 'cond' or
-	 * 'always'
-	 */
-	if (static_branch_likely(&vmx_l1d_flush_cond)) {
-		bool flush_l1d;
-
-		/*
-		 * Clear the per-vcpu flush bit, it gets set again
-		 * either from vcpu_run() or from one of the unsafe
-		 * VMEXIT handlers.
-		 */
-		flush_l1d = vcpu->arch.l1tf_flush_l1d;
-		vcpu->arch.l1tf_flush_l1d = false;
-
-		/*
-		 * Clear the per-cpu flush bit, it gets set again from
-		 * the interrupt handlers.
-		 */
-		flush_l1d |= kvm_get_cpu_l1tf_flush_l1d();
-		kvm_clear_cpu_l1tf_flush_l1d();
-
-		if (!flush_l1d)
-			return;
-	}
-
-	vcpu->stat.l1d_flush++;
-
-	if (static_cpu_has(X86_FEATURE_FLUSH_L1D)) {
-		wrmsrl(MSR_IA32_FLUSH_CMD, L1D_FLUSH);
-		return;
-	}
-
-	asm volatile(
-		/* First ensure the pages are in the TLB */
-		"xorl	%%eax, %%eax\n"
-		".Lpopulate_tlb:\n\t"
-		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
-		"addl	$4096, %%eax\n\t"
-		"cmpl	%%eax, %[size]\n\t"
-		"jne	.Lpopulate_tlb\n\t"
-		"xorl	%%eax, %%eax\n\t"
-		"cpuid\n\t"
-		/* Now fill the cache */
-		"xorl	%%eax, %%eax\n"
-		".Lfill_cache:\n"
-		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
-		"addl	$64, %%eax\n\t"
-		"cmpl	%%eax, %[size]\n\t"
-		"jne	.Lfill_cache\n\t"
-		"lfence\n"
-		:: [flush_pages] "r" (vmx_l1d_flush_pages),
-		    [size] "r" (size)
-		: "eax", "ebx", "ecx", "edx");
-}
-
-static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	if (is_guest_mode(vcpu) &&
-		nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
-		return;
-
-	if (irr == -1 || tpr < irr) {
-		vmcs_write32(TPR_THRESHOLD, 0);
-		return;
-	}
-
-	vmcs_write32(TPR_THRESHOLD, irr);
-}
-
-static void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
-{
-	u32 sec_exec_control;
-
-	if (!lapic_in_kernel(vcpu))
-		return;
-
-	if (!flexpriority_enabled &&
-	    !cpu_has_vmx_virtualize_x2apic_mode())
-		return;
-
-	/* Postpone execution until vmcs01 is the current VMCS. */
-	if (is_guest_mode(vcpu)) {
-		to_vmx(vcpu)->nested.change_vmcs01_virtual_apic_mode = true;
-		return;
-	}
-
-	sec_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
-	sec_exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
-			      SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE);
-
-	switch (kvm_get_apic_mode(vcpu)) {
-	case LAPIC_MODE_INVALID:
-		WARN_ONCE(true, "Invalid local APIC state");
-	case LAPIC_MODE_DISABLED:
-		break;
-	case LAPIC_MODE_XAPIC:
-		if (flexpriority_enabled) {
-			sec_exec_control |=
-				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-			vmx_flush_tlb(vcpu, true);
-		}
-		break;
-	case LAPIC_MODE_X2APIC:
-		if (cpu_has_vmx_virtualize_x2apic_mode())
-			sec_exec_control |=
-				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
-		break;
-	}
-	vmcs_write32(SECONDARY_VM_EXEC_CONTROL, sec_exec_control);
-
-	vmx_update_msr_bitmap(vcpu);
-}
-
-static void vmx_set_apic_access_page_addr(struct kvm_vcpu *vcpu, hpa_t hpa)
-{
-	if (!is_guest_mode(vcpu)) {
-		vmcs_write64(APIC_ACCESS_ADDR, hpa);
-		vmx_flush_tlb(vcpu, true);
-	}
-}
-
-static void vmx_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
-{
-	u16 status;
-	u8 old;
-
-	if (max_isr == -1)
-		max_isr = 0;
-
-	status = vmcs_read16(GUEST_INTR_STATUS);
-	old = status >> 8;
-	if (max_isr != old) {
-		status &= 0xff;
-		status |= max_isr << 8;
-		vmcs_write16(GUEST_INTR_STATUS, status);
-	}
-}
-
-static void vmx_set_rvi(int vector)
-{
-	u16 status;
-	u8 old;
-
-	if (vector == -1)
-		vector = 0;
-
-	status = vmcs_read16(GUEST_INTR_STATUS);
-	old = (u8)status & 0xff;
-	if ((u8)vector != old) {
-		status &= ~0xff;
-		status |= (u8)vector;
-		vmcs_write16(GUEST_INTR_STATUS, status);
-	}
-}
-
-static void vmx_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)
-{
-	/*
-	 * When running L2, updating RVI is only relevant when
-	 * vmcs12 virtual-interrupt-delivery enabled.
-	 * However, it can be enabled only when L1 also
-	 * intercepts external-interrupts and in that case
-	 * we should not update vmcs02 RVI but instead intercept
-	 * interrupt. Therefore, do nothing when running L2.
-	 */
-	if (!is_guest_mode(vcpu))
-		vmx_set_rvi(max_irr);
-}
-
-static int vmx_sync_pir_to_irr(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int max_irr;
-	bool max_irr_updated;
-
-	WARN_ON(!vcpu->arch.apicv_active);
-	if (pi_test_on(&vmx->pi_desc)) {
-		pi_clear_on(&vmx->pi_desc);
-		/*
-		 * IOMMU can write to PIR.ON, so the barrier matters even on UP.
-		 * But on x86 this is just a compiler barrier anyway.
-		 */
-		smp_mb__after_atomic();
-		max_irr_updated =
-			kvm_apic_update_irr(vcpu, vmx->pi_desc.pir, &max_irr);
-
-		/*
-		 * If we are running L2 and L1 has a new pending interrupt
-		 * which can be injected, we should re-evaluate
-		 * what should be done with this new L1 interrupt.
-		 * If L1 intercepts external-interrupts, we should
-		 * exit from L2 to L1. Otherwise, interrupt should be
-		 * delivered directly to L2.
-		 */
-		if (is_guest_mode(vcpu) && max_irr_updated) {
-			if (nested_exit_on_intr(vcpu))
-				kvm_vcpu_exiting_guest_mode(vcpu);
-			else
-				kvm_make_request(KVM_REQ_EVENT, vcpu);
-		}
-	} else {
-		max_irr = kvm_lapic_find_highest_irr(vcpu);
-	}
-	vmx_hwapic_irr_update(vcpu, max_irr);
-	return max_irr;
-}
-
-static u8 vmx_has_apicv_interrupt(struct kvm_vcpu *vcpu)
-{
-	u8 rvi = vmx_get_rvi();
-	u8 vppr = kvm_lapic_get_reg(vcpu->arch.apic, APIC_PROCPRI);
-
-	return ((rvi & 0xf0) > (vppr & 0xf0));
-}
-
-static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
-{
-	if (!kvm_vcpu_apicv_active(vcpu))
-		return;
-
-	vmcs_write64(EOI_EXIT_BITMAP0, eoi_exit_bitmap[0]);
-	vmcs_write64(EOI_EXIT_BITMAP1, eoi_exit_bitmap[1]);
-	vmcs_write64(EOI_EXIT_BITMAP2, eoi_exit_bitmap[2]);
-	vmcs_write64(EOI_EXIT_BITMAP3, eoi_exit_bitmap[3]);
-}
-
-static void vmx_apicv_post_state_restore(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	pi_clear_on(&vmx->pi_desc);
-	memset(vmx->pi_desc.pir, 0, sizeof(vmx->pi_desc.pir));
-}
-
-static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
-{
-	u32 exit_intr_info = 0;
-	u16 basic_exit_reason = (u16)vmx->exit_reason;
-
-	if (!(basic_exit_reason == EXIT_REASON_MCE_DURING_VMENTRY
-	      || basic_exit_reason == EXIT_REASON_EXCEPTION_NMI))
-		return;
-
-	if (!(vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
-		exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-	vmx->exit_intr_info = exit_intr_info;
-
-	/* if exit due to PF check for async PF */
-	if (is_page_fault(exit_intr_info))
-		vmx->vcpu.arch.apf.host_apf_reason = kvm_read_and_reset_pf_reason();
-
-	/* Handle machine checks before interrupts are enabled */
-	if (basic_exit_reason == EXIT_REASON_MCE_DURING_VMENTRY ||
-	    is_machine_check(exit_intr_info))
-		kvm_machine_check();
-
-	/* We need to handle NMIs before interrupts are enabled */
-	if (is_nmi(exit_intr_info)) {
-		kvm_before_interrupt(&vmx->vcpu);
-		asm("int $2");
-		kvm_after_interrupt(&vmx->vcpu);
-	}
-}
-
-static void vmx_handle_external_intr(struct kvm_vcpu *vcpu)
-{
-	u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-
-	if ((exit_intr_info & (INTR_INFO_VALID_MASK | INTR_INFO_INTR_TYPE_MASK))
-			== (INTR_INFO_VALID_MASK | INTR_TYPE_EXT_INTR)) {
-		unsigned int vector;
-		unsigned long entry;
-		gate_desc *desc;
-		struct vcpu_vmx *vmx = to_vmx(vcpu);
-#ifdef CONFIG_X86_64
-		unsigned long tmp;
-#endif
-
-		vector =  exit_intr_info & INTR_INFO_VECTOR_MASK;
-		desc = (gate_desc *)vmx->host_idt_base + vector;
-		entry = gate_offset(desc);
-		asm volatile(
-#ifdef CONFIG_X86_64
-			"mov %%" _ASM_SP ", %[sp]\n\t"
-			"and $0xfffffffffffffff0, %%" _ASM_SP "\n\t"
-			"push $%c[ss]\n\t"
-			"push %[sp]\n\t"
-#endif
-			"pushf\n\t"
-			__ASM_SIZE(push) " $%c[cs]\n\t"
-			CALL_NOSPEC
-			:
-#ifdef CONFIG_X86_64
-			[sp]"=&r"(tmp),
-#endif
-			ASM_CALL_CONSTRAINT
-			:
-			THUNK_TARGET(entry),
-			[ss]"i"(__KERNEL_DS),
-			[cs]"i"(__KERNEL_CS)
-			);
-	}
-}
-STACK_FRAME_NON_STANDARD(vmx_handle_external_intr);
-
-static bool vmx_has_emulated_msr(int index)
-{
-	switch (index) {
-	case MSR_IA32_SMBASE:
-		/*
-		 * We cannot do SMM unless we can run the guest in big
-		 * real mode.
-		 */
-		return enable_unrestricted_guest || emulate_invalid_guest_state;
-	case MSR_AMD64_VIRT_SPEC_CTRL:
-		/* This is AMD only.  */
-		return false;
-	default:
-		return true;
-	}
-}
-
-static bool vmx_mpx_supported(void)
-{
-	return (vmcs_config.vmexit_ctrl & VM_EXIT_CLEAR_BNDCFGS) &&
-		(vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_BNDCFGS);
-}
-
-static bool vmx_xsaves_supported(void)
-{
-	return vmcs_config.cpu_based_2nd_exec_ctrl &
-		SECONDARY_EXEC_XSAVES;
-}
-
-static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
-{
-	u32 exit_intr_info;
-	bool unblock_nmi;
-	u8 vector;
-	bool idtv_info_valid;
-
-	idtv_info_valid = vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK;
-
-	if (enable_vnmi) {
-		if (vmx->loaded_vmcs->nmi_known_unmasked)
-			return;
-		/*
-		 * Can't use vmx->exit_intr_info since we're not sure what
-		 * the exit reason is.
-		 */
-		exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
-		unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0;
-		vector = exit_intr_info & INTR_INFO_VECTOR_MASK;
-		/*
-		 * SDM 3: 27.7.1.2 (September 2008)
-		 * Re-set bit "block by NMI" before VM entry if vmexit caused by
-		 * a guest IRET fault.
-		 * SDM 3: 23.2.2 (September 2008)
-		 * Bit 12 is undefined in any of the following cases:
-		 *  If the VM exit sets the valid bit in the IDT-vectoring
-		 *   information field.
-		 *  If the VM exit is due to a double fault.
-		 */
-		if ((exit_intr_info & INTR_INFO_VALID_MASK) && unblock_nmi &&
-		    vector != DF_VECTOR && !idtv_info_valid)
-			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
-				      GUEST_INTR_STATE_NMI);
-		else
-			vmx->loaded_vmcs->nmi_known_unmasked =
-				!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO)
-				  & GUEST_INTR_STATE_NMI);
-	} else if (unlikely(vmx->loaded_vmcs->soft_vnmi_blocked))
-		vmx->loaded_vmcs->vnmi_blocked_time +=
-			ktime_to_ns(ktime_sub(ktime_get(),
-					      vmx->loaded_vmcs->entry_time));
-}
-
-static void __vmx_complete_interrupts(struct kvm_vcpu *vcpu,
-				      u32 idt_vectoring_info,
-				      int instr_len_field,
-				      int error_code_field)
-{
-	u8 vector;
-	int type;
-	bool idtv_info_valid;
-
-	idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK;
-
-	vcpu->arch.nmi_injected = false;
-	kvm_clear_exception_queue(vcpu);
-	kvm_clear_interrupt_queue(vcpu);
-
-	if (!idtv_info_valid)
-		return;
-
-	kvm_make_request(KVM_REQ_EVENT, vcpu);
-
-	vector = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK;
-	type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK;
-
-	switch (type) {
-	case INTR_TYPE_NMI_INTR:
-		vcpu->arch.nmi_injected = true;
-		/*
-		 * SDM 3: 27.7.1.2 (September 2008)
-		 * Clear bit "block by NMI" before VM entry if a NMI
-		 * delivery faulted.
-		 */
-		vmx_set_nmi_mask(vcpu, false);
-		break;
-	case INTR_TYPE_SOFT_EXCEPTION:
-		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
-		/* fall through */
-	case INTR_TYPE_HARD_EXCEPTION:
-		if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) {
-			u32 err = vmcs_read32(error_code_field);
-			kvm_requeue_exception_e(vcpu, vector, err);
-		} else
-			kvm_requeue_exception(vcpu, vector);
-		break;
-	case INTR_TYPE_SOFT_INTR:
-		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
-		/* fall through */
-	case INTR_TYPE_EXT_INTR:
-		kvm_queue_interrupt(vcpu, vector, type == INTR_TYPE_SOFT_INTR);
-		break;
-	default:
-		break;
-	}
-}
-
-static void vmx_complete_interrupts(struct vcpu_vmx *vmx)
-{
-	__vmx_complete_interrupts(&vmx->vcpu, vmx->idt_vectoring_info,
-				  VM_EXIT_INSTRUCTION_LEN,
-				  IDT_VECTORING_ERROR_CODE);
-}
-
-static void vmx_cancel_injection(struct kvm_vcpu *vcpu)
-{
-	__vmx_complete_interrupts(vcpu,
-				  vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
-				  VM_ENTRY_INSTRUCTION_LEN,
-				  VM_ENTRY_EXCEPTION_ERROR_CODE);
-
-	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
-}
-
-static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
-{
-	int i, nr_msrs;
-	struct perf_guest_switch_msr *msrs;
-
-	msrs = perf_guest_get_msrs(&nr_msrs);
-
-	if (!msrs)
-		return;
-
-	for (i = 0; i < nr_msrs; i++)
-		if (msrs[i].host == msrs[i].guest)
-			clear_atomic_switch_msr(vmx, msrs[i].msr);
-		else
-			add_atomic_switch_msr(vmx, msrs[i].msr, msrs[i].guest,
-					msrs[i].host, false);
-}
-
-static void vmx_arm_hv_timer(struct vcpu_vmx *vmx, u32 val)
-{
-	vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, val);
-	if (!vmx->loaded_vmcs->hv_timer_armed)
-		vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL,
-			      PIN_BASED_VMX_PREEMPTION_TIMER);
-	vmx->loaded_vmcs->hv_timer_armed = true;
-}
-
-static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u64 tscl;
-	u32 delta_tsc;
-
-	if (vmx->req_immediate_exit) {
-		vmx_arm_hv_timer(vmx, 0);
-		return;
-	}
-
-	if (vmx->hv_deadline_tsc != -1) {
-		tscl = rdtsc();
-		if (vmx->hv_deadline_tsc > tscl)
-			/* set_hv_timer ensures the delta fits in 32-bits */
-			delta_tsc = (u32)((vmx->hv_deadline_tsc - tscl) >>
-				cpu_preemption_timer_multi);
-		else
-			delta_tsc = 0;
-
-		vmx_arm_hv_timer(vmx, delta_tsc);
-		return;
-	}
-
-	if (vmx->loaded_vmcs->hv_timer_armed)
-		vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
-				PIN_BASED_VMX_PREEMPTION_TIMER);
-	vmx->loaded_vmcs->hv_timer_armed = false;
-}
-
-static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long cr3, cr4, evmcs_rsp;
-
-	/* Record the guest's net vcpu time for enforced NMI injections. */
-	if (unlikely(!enable_vnmi &&
-		     vmx->loaded_vmcs->soft_vnmi_blocked))
-		vmx->loaded_vmcs->entry_time = ktime_get();
-
-	/* Don't enter VMX if guest state is invalid, let the exit handler
-	   start emulation until we arrive back to a valid state */
-	if (vmx->emulation_required)
-		return;
-
-	if (vmx->ple_window_dirty) {
-		vmx->ple_window_dirty = false;
-		vmcs_write32(PLE_WINDOW, vmx->ple_window);
-	}
-
-	if (vmx->nested.need_vmcs12_sync) {
-		/*
-		 * hv_evmcs may end up being not mapped after migration (when
-		 * L2 was running), map it here to make sure vmcs12 changes are
-		 * properly reflected.
-		 */
-		if (vmx->nested.enlightened_vmcs_enabled &&
-		    !vmx->nested.hv_evmcs)
-			nested_vmx_handle_enlightened_vmptrld(vcpu, false);
-
-		if (vmx->nested.hv_evmcs) {
-			copy_vmcs12_to_enlightened(vmx);
-			/* All fields are clean */
-			vmx->nested.hv_evmcs->hv_clean_fields |=
-				HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
-		} else {
-			copy_vmcs12_to_shadow(vmx);
-		}
-		vmx->nested.need_vmcs12_sync = false;
-	}
-
-	if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty))
-		vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
-	if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty))
-		vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
-
-	cr3 = __get_current_cr3_fast();
-	if (unlikely(cr3 != vmx->loaded_vmcs->host_state.cr3)) {
-		vmcs_writel(HOST_CR3, cr3);
-		vmx->loaded_vmcs->host_state.cr3 = cr3;
-	}
-
-	cr4 = cr4_read_shadow();
-	if (unlikely(cr4 != vmx->loaded_vmcs->host_state.cr4)) {
-		vmcs_writel(HOST_CR4, cr4);
-		vmx->loaded_vmcs->host_state.cr4 = cr4;
-	}
-
-	/* When single-stepping over STI and MOV SS, we must clear the
-	 * corresponding interruptibility bits in the guest state. Otherwise
-	 * vmentry fails as it then expects bit 14 (BS) in pending debug
-	 * exceptions being set, but that's not correct for the guest debugging
-	 * case. */
-	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
-		vmx_set_interrupt_shadow(vcpu, 0);
-
-	if (static_cpu_has(X86_FEATURE_PKU) &&
-	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE) &&
-	    vcpu->arch.pkru != vmx->host_pkru)
-		__write_pkru(vcpu->arch.pkru);
-
-	atomic_switch_perf_msrs(vmx);
-
-	vmx_update_hv_timer(vcpu);
-
-	/*
-	 * If this vCPU has touched SPEC_CTRL, restore the guest's value if
-	 * it's non-zero. Since vmentry is serialising on affected CPUs, there
-	 * is no need to worry about the conditional branch over the wrmsr
-	 * being speculatively taken.
-	 */
-	x86_spec_ctrl_set_guest(vmx->spec_ctrl, 0);
-
-	vmx->__launched = vmx->loaded_vmcs->launched;
-
-	evmcs_rsp = static_branch_unlikely(&enable_evmcs) ?
-		(unsigned long)&current_evmcs->host_rsp : 0;
-
-	if (static_branch_unlikely(&vmx_l1d_should_flush))
-		vmx_l1d_flush(vcpu);
-
-	asm(
-		/* Store host registers */
-		"push %%" _ASM_DX "; push %%" _ASM_BP ";"
-		"push %%" _ASM_CX " \n\t" /* placeholder for guest rcx */
-		"push %%" _ASM_CX " \n\t"
-		"cmp %%" _ASM_SP ", %c[host_rsp](%0) \n\t"
-		"je 1f \n\t"
-		"mov %%" _ASM_SP ", %c[host_rsp](%0) \n\t"
-		/* Avoid VMWRITE when Enlightened VMCS is in use */
-		"test %%" _ASM_SI ", %%" _ASM_SI " \n\t"
-		"jz 2f \n\t"
-		"mov %%" _ASM_SP ", (%%" _ASM_SI ") \n\t"
-		"jmp 1f \n\t"
-		"2: \n\t"
-		__ex("vmwrite %%" _ASM_SP ", %%" _ASM_DX) "\n\t"
-		"1: \n\t"
-		/* Reload cr2 if changed */
-		"mov %c[cr2](%0), %%" _ASM_AX " \n\t"
-		"mov %%cr2, %%" _ASM_DX " \n\t"
-		"cmp %%" _ASM_AX ", %%" _ASM_DX " \n\t"
-		"je 3f \n\t"
-		"mov %%" _ASM_AX", %%cr2 \n\t"
-		"3: \n\t"
-		/* Check if vmlaunch of vmresume is needed */
-		"cmpl $0, %c[launched](%0) \n\t"
-		/* Load guest registers.  Don't clobber flags. */
-		"mov %c[rax](%0), %%" _ASM_AX " \n\t"
-		"mov %c[rbx](%0), %%" _ASM_BX " \n\t"
-		"mov %c[rdx](%0), %%" _ASM_DX " \n\t"
-		"mov %c[rsi](%0), %%" _ASM_SI " \n\t"
-		"mov %c[rdi](%0), %%" _ASM_DI " \n\t"
-		"mov %c[rbp](%0), %%" _ASM_BP " \n\t"
-#ifdef CONFIG_X86_64
-		"mov %c[r8](%0),  %%r8  \n\t"
-		"mov %c[r9](%0),  %%r9  \n\t"
-		"mov %c[r10](%0), %%r10 \n\t"
-		"mov %c[r11](%0), %%r11 \n\t"
-		"mov %c[r12](%0), %%r12 \n\t"
-		"mov %c[r13](%0), %%r13 \n\t"
-		"mov %c[r14](%0), %%r14 \n\t"
-		"mov %c[r15](%0), %%r15 \n\t"
-#endif
-		"mov %c[rcx](%0), %%" _ASM_CX " \n\t" /* kills %0 (ecx) */
-
-		/* Enter guest mode */
-		"jne 1f \n\t"
-		__ex("vmlaunch") "\n\t"
-		"jmp 2f \n\t"
-		"1: " __ex("vmresume") "\n\t"
-		"2: "
-		/* Save guest registers, load host registers, keep flags */
-		"mov %0, %c[wordsize](%%" _ASM_SP ") \n\t"
-		"pop %0 \n\t"
-		"setbe %c[fail](%0)\n\t"
-		"mov %%" _ASM_AX ", %c[rax](%0) \n\t"
-		"mov %%" _ASM_BX ", %c[rbx](%0) \n\t"
-		__ASM_SIZE(pop) " %c[rcx](%0) \n\t"
-		"mov %%" _ASM_DX ", %c[rdx](%0) \n\t"
-		"mov %%" _ASM_SI ", %c[rsi](%0) \n\t"
-		"mov %%" _ASM_DI ", %c[rdi](%0) \n\t"
-		"mov %%" _ASM_BP ", %c[rbp](%0) \n\t"
-#ifdef CONFIG_X86_64
-		"mov %%r8,  %c[r8](%0) \n\t"
-		"mov %%r9,  %c[r9](%0) \n\t"
-		"mov %%r10, %c[r10](%0) \n\t"
-		"mov %%r11, %c[r11](%0) \n\t"
-		"mov %%r12, %c[r12](%0) \n\t"
-		"mov %%r13, %c[r13](%0) \n\t"
-		"mov %%r14, %c[r14](%0) \n\t"
-		"mov %%r15, %c[r15](%0) \n\t"
-		/*
-		* Clear host registers marked as clobbered to prevent
-		* speculative use.
-		*/
-		"xor %%r8d,  %%r8d \n\t"
-		"xor %%r9d,  %%r9d \n\t"
-		"xor %%r10d, %%r10d \n\t"
-		"xor %%r11d, %%r11d \n\t"
-		"xor %%r12d, %%r12d \n\t"
-		"xor %%r13d, %%r13d \n\t"
-		"xor %%r14d, %%r14d \n\t"
-		"xor %%r15d, %%r15d \n\t"
-#endif
-		"mov %%cr2, %%" _ASM_AX "   \n\t"
-		"mov %%" _ASM_AX ", %c[cr2](%0) \n\t"
-
-		"xor %%eax, %%eax \n\t"
-		"xor %%ebx, %%ebx \n\t"
-		"xor %%esi, %%esi \n\t"
-		"xor %%edi, %%edi \n\t"
-		"pop  %%" _ASM_BP "; pop  %%" _ASM_DX " \n\t"
-		".pushsection .rodata \n\t"
-		".global vmx_return \n\t"
-		"vmx_return: " _ASM_PTR " 2b \n\t"
-		".popsection"
-	      : : "c"(vmx), "d"((unsigned long)HOST_RSP), "S"(evmcs_rsp),
-		[launched]"i"(offsetof(struct vcpu_vmx, __launched)),
-		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
-		[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)),
-		[rax]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RAX])),
-		[rbx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBX])),
-		[rcx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RCX])),
-		[rdx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDX])),
-		[rsi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RSI])),
-		[rdi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDI])),
-		[rbp]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBP])),
-#ifdef CONFIG_X86_64
-		[r8]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R8])),
-		[r9]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R9])),
-		[r10]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R10])),
-		[r11]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R11])),
-		[r12]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R12])),
-		[r13]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R13])),
-		[r14]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R14])),
-		[r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])),
-#endif
-		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
-		[wordsize]"i"(sizeof(ulong))
-	      : "cc", "memory"
-#ifdef CONFIG_X86_64
-		, "rax", "rbx", "rdi"
-		, "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
-#else
-		, "eax", "ebx", "edi"
-#endif
-	      );
-
-	/*
-	 * We do not use IBRS in the kernel. If this vCPU has used the
-	 * SPEC_CTRL MSR it may have left it on; save the value and
-	 * turn it off. This is much more efficient than blindly adding
-	 * it to the atomic save/restore list. Especially as the former
-	 * (Saving guest MSRs on vmexit) doesn't even exist in KVM.
-	 *
-	 * For non-nested case:
-	 * If the L01 MSR bitmap does not intercept the MSR, then we need to
-	 * save it.
-	 *
-	 * For nested case:
-	 * If the L02 MSR bitmap does not intercept the MSR, then we need to
-	 * save it.
-	 */
-	if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
-		vmx->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);
-
-	x86_spec_ctrl_restore_host(vmx->spec_ctrl, 0);
-
-	/* Eliminate branch target predictions from guest mode */
-	vmexit_fill_RSB();
-
-	/* All fields are clean at this point */
-	if (static_branch_unlikely(&enable_evmcs))
-		current_evmcs->hv_clean_fields |=
-			HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
-
-	/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
-	if (vmx->host_debugctlmsr)
-		update_debugctlmsr(vmx->host_debugctlmsr);
-
-#ifndef CONFIG_X86_64
-	/*
-	 * The sysexit path does not restore ds/es, so we must set them to
-	 * a reasonable value ourselves.
-	 *
-	 * We can't defer this to vmx_prepare_switch_to_host() since that
-	 * function may be executed in interrupt context, which saves and
-	 * restore segments around it, nullifying its effect.
-	 */
-	loadsegment(ds, __USER_DS);
-	loadsegment(es, __USER_DS);
-#endif
-
-	vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
-				  | (1 << VCPU_EXREG_RFLAGS)
-				  | (1 << VCPU_EXREG_PDPTR)
-				  | (1 << VCPU_EXREG_SEGMENTS)
-				  | (1 << VCPU_EXREG_CR3));
-	vcpu->arch.regs_dirty = 0;
-
-	/*
-	 * eager fpu is enabled if PKEY is supported and CR4 is switched
-	 * back on host, so it is safe to read guest PKRU from current
-	 * XSAVE.
-	 */
-	if (static_cpu_has(X86_FEATURE_PKU) &&
-	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE)) {
-		vcpu->arch.pkru = __read_pkru();
-		if (vcpu->arch.pkru != vmx->host_pkru)
-			__write_pkru(vmx->host_pkru);
-	}
-
-	vmx->nested.nested_run_pending = 0;
-	vmx->idt_vectoring_info = 0;
-
-	vmx->exit_reason = vmx->fail ? 0xdead : vmcs_read32(VM_EXIT_REASON);
-	if (vmx->fail || (vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
-		return;
-
-	vmx->loaded_vmcs->launched = 1;
-	vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
-
-	vmx_complete_atomic_exit(vmx);
-	vmx_recover_nmi_blocking(vmx);
-	vmx_complete_interrupts(vmx);
-}
-STACK_FRAME_NON_STANDARD(vmx_vcpu_run);
-
-static struct kvm *vmx_vm_alloc(void)
-{
-	struct kvm_vmx *kvm_vmx = vzalloc(sizeof(struct kvm_vmx));
-	return &kvm_vmx->kvm;
-}
-
-static void vmx_vm_free(struct kvm *kvm)
-{
-	vfree(to_kvm_vmx(kvm));
-}
-
-static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int cpu;
-
-	if (vmx->loaded_vmcs == vmcs)
-		return;
-
-	cpu = get_cpu();
-	vmx_vcpu_put(vcpu);
-	vmx->loaded_vmcs = vmcs;
-	vmx_vcpu_load(vcpu, cpu);
-	put_cpu();
-
-	vm_entry_controls_reset_shadow(vmx);
-	vm_exit_controls_reset_shadow(vmx);
-	vmx_segment_cache_clear(vmx);
-}
-
-/*
- * Ensure that the current vmcs of the logical processor is the
- * vmcs01 of the vcpu before calling free_nested().
- */
-static void vmx_free_vcpu_nested(struct kvm_vcpu *vcpu)
-{
-	vcpu_load(vcpu);
-	vmx_switch_vmcs(vcpu, &to_vmx(vcpu)->vmcs01);
-	free_nested(vcpu);
-	vcpu_put(vcpu);
-}
-
-static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (enable_pml)
-		vmx_destroy_pml_buffer(vmx);
-	free_vpid(vmx->vpid);
-	leave_guest_mode(vcpu);
-	vmx_free_vcpu_nested(vcpu);
-	free_loaded_vmcs(vmx->loaded_vmcs);
-	kfree(vmx->guest_msrs);
-	kvm_vcpu_uninit(vcpu);
-	kmem_cache_free(kvm_vcpu_cache, vmx);
-}
-
-static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
-{
-	int err;
-	struct vcpu_vmx *vmx = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
-	unsigned long *msr_bitmap;
-	int cpu;
-
-	if (!vmx)
-		return ERR_PTR(-ENOMEM);
-
-	vmx->vpid = allocate_vpid();
-
-	err = kvm_vcpu_init(&vmx->vcpu, kvm, id);
-	if (err)
-		goto free_vcpu;
-
-	err = -ENOMEM;
-
-	/*
-	 * If PML is turned on, failure on enabling PML just results in failure
-	 * of creating the vcpu, therefore we can simplify PML logic (by
-	 * avoiding dealing with cases, such as enabling PML partially on vcpus
-	 * for the guest, etc.
-	 */
-	if (enable_pml) {
-		vmx->pml_pg = alloc_page(GFP_KERNEL | __GFP_ZERO);
-		if (!vmx->pml_pg)
-			goto uninit_vcpu;
-	}
-
-	vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) * sizeof(vmx->guest_msrs[0])
-		     > PAGE_SIZE);
-
-	if (!vmx->guest_msrs)
-		goto free_pml;
-
-	err = alloc_loaded_vmcs(&vmx->vmcs01);
-	if (err < 0)
-		goto free_msrs;
-
-	msr_bitmap = vmx->vmcs01.msr_bitmap;
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_FS_BASE, MSR_TYPE_RW);
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_GS_BASE, MSR_TYPE_RW);
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_KERNEL_GS_BASE, MSR_TYPE_RW);
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_CS, MSR_TYPE_RW);
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_ESP, MSR_TYPE_RW);
-	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_EIP, MSR_TYPE_RW);
-	vmx->msr_bitmap_mode = 0;
-
-	vmx->loaded_vmcs = &vmx->vmcs01;
-	cpu = get_cpu();
-	vmx_vcpu_load(&vmx->vcpu, cpu);
-	vmx->vcpu.cpu = cpu;
-	vmx_vcpu_setup(vmx);
-	vmx_vcpu_put(&vmx->vcpu);
-	put_cpu();
-	if (cpu_need_virtualize_apic_accesses(&vmx->vcpu)) {
-		err = alloc_apic_access_page(kvm);
-		if (err)
-			goto free_vmcs;
-	}
-
-	if (enable_ept && !enable_unrestricted_guest) {
-		err = init_rmode_identity_map(kvm);
-		if (err)
-			goto free_vmcs;
-	}
-
-	if (nested)
-		nested_vmx_setup_ctls_msrs(&vmx->nested.msrs,
-					   kvm_vcpu_apicv_active(&vmx->vcpu));
-
-	vmx->nested.posted_intr_nv = -1;
-	vmx->nested.current_vmptr = -1ull;
-
-	vmx->msr_ia32_feature_control_valid_bits = FEATURE_CONTROL_LOCKED;
-
-	/*
-	 * Enforce invariant: pi_desc.nv is always either POSTED_INTR_VECTOR
-	 * or POSTED_INTR_WAKEUP_VECTOR.
-	 */
-	vmx->pi_desc.nv = POSTED_INTR_VECTOR;
-	vmx->pi_desc.sn = 1;
-
-	return &vmx->vcpu;
-
-free_vmcs:
-	free_loaded_vmcs(vmx->loaded_vmcs);
-free_msrs:
-	kfree(vmx->guest_msrs);
-free_pml:
-	vmx_destroy_pml_buffer(vmx);
-uninit_vcpu:
-	kvm_vcpu_uninit(&vmx->vcpu);
-free_vcpu:
-	free_vpid(vmx->vpid);
-	kmem_cache_free(kvm_vcpu_cache, vmx);
-	return ERR_PTR(err);
-}
-
-#define L1TF_MSG_SMT "L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
-#define L1TF_MSG_L1D "L1TF CPU bug present and virtualization mitigation disabled, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
-
-static int vmx_vm_init(struct kvm *kvm)
-{
-	spin_lock_init(&to_kvm_vmx(kvm)->ept_pointer_lock);
-
-	if (!ple_gap)
-		kvm->arch.pause_in_guest = true;
-
-	if (boot_cpu_has(X86_BUG_L1TF) && enable_ept) {
-		switch (l1tf_mitigation) {
-		case L1TF_MITIGATION_OFF:
-		case L1TF_MITIGATION_FLUSH_NOWARN:
-			/* 'I explicitly don't care' is set */
-			break;
-		case L1TF_MITIGATION_FLUSH:
-		case L1TF_MITIGATION_FLUSH_NOSMT:
-		case L1TF_MITIGATION_FULL:
-			/*
-			 * Warn upon starting the first VM in a potentially
-			 * insecure environment.
-			 */
-			if (cpu_smt_control == CPU_SMT_ENABLED)
-				pr_warn_once(L1TF_MSG_SMT);
-			if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_NEVER)
-				pr_warn_once(L1TF_MSG_L1D);
-			break;
-		case L1TF_MITIGATION_FULL_FORCE:
-			/* Flush is enforced */
-			break;
-		}
-	}
-	return 0;
-}
-
-static void __init vmx_check_processor_compat(void *rtn)
-{
-	struct vmcs_config vmcs_conf;
-
-	*(int *)rtn = 0;
-	if (setup_vmcs_config(&vmcs_conf) < 0)
-		*(int *)rtn = -EIO;
-	nested_vmx_setup_ctls_msrs(&vmcs_conf.nested, enable_apicv);
-	if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) {
-		printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n",
-				smp_processor_id());
-		*(int *)rtn = -EIO;
-	}
-}
-
-static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
-{
-	u8 cache;
-	u64 ipat = 0;
-
-	/* For VT-d and EPT combination
-	 * 1. MMIO: always map as UC
-	 * 2. EPT with VT-d:
-	 *   a. VT-d without snooping control feature: can't guarantee the
-	 *	result, try to trust guest.
-	 *   b. VT-d with snooping control feature: snooping control feature of
-	 *	VT-d engine can guarantee the cache correctness. Just set it
-	 *	to WB to keep consistent with host. So the same as item 3.
-	 * 3. EPT without VT-d: always map as WB and set IPAT=1 to keep
-	 *    consistent with host MTRR
-	 */
-	if (is_mmio) {
-		cache = MTRR_TYPE_UNCACHABLE;
-		goto exit;
-	}
-
-	if (!kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
-		ipat = VMX_EPT_IPAT_BIT;
-		cache = MTRR_TYPE_WRBACK;
-		goto exit;
-	}
-
-	if (kvm_read_cr0(vcpu) & X86_CR0_CD) {
-		ipat = VMX_EPT_IPAT_BIT;
-		if (kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_CD_NW_CLEARED))
-			cache = MTRR_TYPE_WRBACK;
-		else
-			cache = MTRR_TYPE_UNCACHABLE;
-		goto exit;
-	}
-
-	cache = kvm_mtrr_get_guest_memory_type(vcpu, gfn);
-
-exit:
-	return (cache << VMX_EPT_MT_EPTE_SHIFT) | ipat;
-}
-
-static int vmx_get_lpage_level(void)
-{
-	if (enable_ept && !cpu_has_vmx_ept_1g_page())
-		return PT_DIRECTORY_LEVEL;
-	else
-		/* For shadow and EPT supported 1GB page */
-		return PT_PDPE_LEVEL;
-}
-
-static void vmcs_set_secondary_exec_control(u32 new_ctl)
-{
-	/*
-	 * These bits in the secondary execution controls field
-	 * are dynamic, the others are mostly based on the hypervisor
-	 * architecture and the guest's CPUID.  Do not touch the
-	 * dynamic bits.
-	 */
-	u32 mask =
-		SECONDARY_EXEC_SHADOW_VMCS |
-		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
-		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
-		SECONDARY_EXEC_DESC;
-
-	u32 cur_ctl = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
-
-	vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
-		     (new_ctl & ~mask) | (cur_ctl & mask));
-}
-
-/*
- * Generate MSR_IA32_VMX_CR{0,4}_FIXED1 according to CPUID. Only set bits
- * (indicating "allowed-1") if they are supported in the guest's CPUID.
- */
-static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct kvm_cpuid_entry2 *entry;
-
-	vmx->nested.msrs.cr0_fixed1 = 0xffffffff;
-	vmx->nested.msrs.cr4_fixed1 = X86_CR4_PCE;
-
-#define cr4_fixed1_update(_cr4_mask, _reg, _cpuid_mask) do {		\
-	if (entry && (entry->_reg & (_cpuid_mask)))			\
-		vmx->nested.msrs.cr4_fixed1 |= (_cr4_mask);	\
-} while (0)
-
-	entry = kvm_find_cpuid_entry(vcpu, 0x1, 0);
-	cr4_fixed1_update(X86_CR4_VME,        edx, bit(X86_FEATURE_VME));
-	cr4_fixed1_update(X86_CR4_PVI,        edx, bit(X86_FEATURE_VME));
-	cr4_fixed1_update(X86_CR4_TSD,        edx, bit(X86_FEATURE_TSC));
-	cr4_fixed1_update(X86_CR4_DE,         edx, bit(X86_FEATURE_DE));
-	cr4_fixed1_update(X86_CR4_PSE,        edx, bit(X86_FEATURE_PSE));
-	cr4_fixed1_update(X86_CR4_PAE,        edx, bit(X86_FEATURE_PAE));
-	cr4_fixed1_update(X86_CR4_MCE,        edx, bit(X86_FEATURE_MCE));
-	cr4_fixed1_update(X86_CR4_PGE,        edx, bit(X86_FEATURE_PGE));
-	cr4_fixed1_update(X86_CR4_OSFXSR,     edx, bit(X86_FEATURE_FXSR));
-	cr4_fixed1_update(X86_CR4_OSXMMEXCPT, edx, bit(X86_FEATURE_XMM));
-	cr4_fixed1_update(X86_CR4_VMXE,       ecx, bit(X86_FEATURE_VMX));
-	cr4_fixed1_update(X86_CR4_SMXE,       ecx, bit(X86_FEATURE_SMX));
-	cr4_fixed1_update(X86_CR4_PCIDE,      ecx, bit(X86_FEATURE_PCID));
-	cr4_fixed1_update(X86_CR4_OSXSAVE,    ecx, bit(X86_FEATURE_XSAVE));
-
-	entry = kvm_find_cpuid_entry(vcpu, 0x7, 0);
-	cr4_fixed1_update(X86_CR4_FSGSBASE,   ebx, bit(X86_FEATURE_FSGSBASE));
-	cr4_fixed1_update(X86_CR4_SMEP,       ebx, bit(X86_FEATURE_SMEP));
-	cr4_fixed1_update(X86_CR4_SMAP,       ebx, bit(X86_FEATURE_SMAP));
-	cr4_fixed1_update(X86_CR4_PKE,        ecx, bit(X86_FEATURE_PKU));
-	cr4_fixed1_update(X86_CR4_UMIP,       ecx, bit(X86_FEATURE_UMIP));
-
-#undef cr4_fixed1_update
-}
-
-static void nested_vmx_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (kvm_mpx_supported()) {
-		bool mpx_enabled = guest_cpuid_has(vcpu, X86_FEATURE_MPX);
-
-		if (mpx_enabled) {
-			vmx->nested.msrs.entry_ctls_high |= VM_ENTRY_LOAD_BNDCFGS;
-			vmx->nested.msrs.exit_ctls_high |= VM_EXIT_CLEAR_BNDCFGS;
-		} else {
-			vmx->nested.msrs.entry_ctls_high &= ~VM_ENTRY_LOAD_BNDCFGS;
-			vmx->nested.msrs.exit_ctls_high &= ~VM_EXIT_CLEAR_BNDCFGS;
-		}
-	}
-}
-
-static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (cpu_has_secondary_exec_ctrls()) {
-		vmx_compute_secondary_exec_control(vmx);
-		vmcs_set_secondary_exec_control(vmx->secondary_exec_control);
-	}
-
-	if (nested_vmx_allowed(vcpu))
-		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
-			FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
-	else
-		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
-			~FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
-
-	if (nested_vmx_allowed(vcpu)) {
-		nested_vmx_cr_fixed1_bits_update(vcpu);
-		nested_vmx_entry_exit_ctls_update(vcpu);
-	}
-}
-
-static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
-{
-	if (func == 1 && nested)
-		entry->ecx |= bit(X86_FEATURE_VMX);
-}
-
-static void nested_ept_inject_page_fault(struct kvm_vcpu *vcpu,
-		struct x86_exception *fault)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 exit_reason;
-	unsigned long exit_qualification = vcpu->arch.exit_qualification;
-
-	if (vmx->nested.pml_full) {
-		exit_reason = EXIT_REASON_PML_FULL;
-		vmx->nested.pml_full = false;
-		exit_qualification &= INTR_INFO_UNBLOCK_NMI;
-	} else if (fault->error_code & PFERR_RSVD_MASK)
-		exit_reason = EXIT_REASON_EPT_MISCONFIG;
-	else
-		exit_reason = EXIT_REASON_EPT_VIOLATION;
-
-	nested_vmx_vmexit(vcpu, exit_reason, 0, exit_qualification);
-	vmcs12->guest_physical_address = fault->address;
-}
-
-static bool nested_ept_ad_enabled(struct kvm_vcpu *vcpu)
-{
-	return nested_ept_get_cr3(vcpu) & VMX_EPTP_AD_ENABLE_BIT;
-}
-
-/* Callbacks for nested_ept_init_mmu_context: */
-
-static unsigned long nested_ept_get_cr3(struct kvm_vcpu *vcpu)
-{
-	/* return the page table to be shadowed - in our case, EPT12 */
-	return get_vmcs12(vcpu)->ept_pointer;
-}
-
-static void nested_ept_init_mmu_context(struct kvm_vcpu *vcpu)
-{
-	WARN_ON(mmu_is_nested(vcpu));
-
-	vcpu->arch.mmu = &vcpu->arch.guest_mmu;
-	kvm_init_shadow_ept_mmu(vcpu,
-			to_vmx(vcpu)->nested.msrs.ept_caps &
-			VMX_EPT_EXECUTE_ONLY_BIT,
-			nested_ept_ad_enabled(vcpu),
-			nested_ept_get_cr3(vcpu));
-	vcpu->arch.mmu->set_cr3           = vmx_set_cr3;
-	vcpu->arch.mmu->get_cr3           = nested_ept_get_cr3;
-	vcpu->arch.mmu->inject_page_fault = nested_ept_inject_page_fault;
-	vcpu->arch.mmu->get_pdptr         = kvm_pdptr_read;
-
-	vcpu->arch.walk_mmu              = &vcpu->arch.nested_mmu;
-}
-
-static void nested_ept_uninit_mmu_context(struct kvm_vcpu *vcpu)
-{
-	vcpu->arch.mmu = &vcpu->arch.root_mmu;
-	vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
-}
-
-static bool nested_vmx_is_page_fault_vmexit(struct vmcs12 *vmcs12,
-					    u16 error_code)
-{
-	bool inequality, bit;
-
-	bit = (vmcs12->exception_bitmap & (1u << PF_VECTOR)) != 0;
-	inequality =
-		(error_code & vmcs12->page_fault_error_code_mask) !=
-		 vmcs12->page_fault_error_code_match;
-	return inequality ^ bit;
-}
-
-static void vmx_inject_page_fault_nested(struct kvm_vcpu *vcpu,
-		struct x86_exception *fault)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	WARN_ON(!is_guest_mode(vcpu));
-
-	if (nested_vmx_is_page_fault_vmexit(vmcs12, fault->error_code) &&
-		!to_vmx(vcpu)->nested.nested_run_pending) {
-		vmcs12->vm_exit_intr_error_code = fault->error_code;
-		nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
-				  PF_VECTOR | INTR_TYPE_HARD_EXCEPTION |
-				  INTR_INFO_DELIVER_CODE_MASK | INTR_INFO_VALID_MASK,
-				  fault->address);
-	} else {
-		kvm_inject_page_fault(vcpu, fault);
-	}
-}
-
-static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
-						 struct vmcs12 *vmcs12);
-
-static void nested_get_vmcs12_pages(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct page *page;
-	u64 hpa;
-
-	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) {
-		/*
-		 * Translate L1 physical address to host physical
-		 * address for vmcs02. Keep the page pinned, so this
-		 * physical address remains valid. We keep a reference
-		 * to it so we can release it later.
-		 */
-		if (vmx->nested.apic_access_page) { /* shouldn't happen */
-			kvm_release_page_dirty(vmx->nested.apic_access_page);
-			vmx->nested.apic_access_page = NULL;
-		}
-		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->apic_access_addr);
-		/*
-		 * If translation failed, no matter: This feature asks
-		 * to exit when accessing the given address, and if it
-		 * can never be accessed, this feature won't do
-		 * anything anyway.
-		 */
-		if (!is_error_page(page)) {
-			vmx->nested.apic_access_page = page;
-			hpa = page_to_phys(vmx->nested.apic_access_page);
-			vmcs_write64(APIC_ACCESS_ADDR, hpa);
-		} else {
-			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
-					SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
-		}
-	}
-
-	if (nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW)) {
-		if (vmx->nested.virtual_apic_page) { /* shouldn't happen */
-			kvm_release_page_dirty(vmx->nested.virtual_apic_page);
-			vmx->nested.virtual_apic_page = NULL;
-		}
-		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->virtual_apic_page_addr);
-
-		/*
-		 * If translation failed, VM entry will fail because
-		 * prepare_vmcs02 set VIRTUAL_APIC_PAGE_ADDR to -1ull.
-		 * Failing the vm entry is _not_ what the processor
-		 * does but it's basically the only possibility we
-		 * have.  We could still enter the guest if CR8 load
-		 * exits are enabled, CR8 store exits are enabled, and
-		 * virtualize APIC access is disabled; in this case
-		 * the processor would never use the TPR shadow and we
-		 * could simply clear the bit from the execution
-		 * control.  But such a configuration is useless, so
-		 * let's keep the code simple.
-		 */
-		if (!is_error_page(page)) {
-			vmx->nested.virtual_apic_page = page;
-			hpa = page_to_phys(vmx->nested.virtual_apic_page);
-			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, hpa);
-		}
-	}
-
-	if (nested_cpu_has_posted_intr(vmcs12)) {
-		if (vmx->nested.pi_desc_page) { /* shouldn't happen */
-			kunmap(vmx->nested.pi_desc_page);
-			kvm_release_page_dirty(vmx->nested.pi_desc_page);
-			vmx->nested.pi_desc_page = NULL;
-			vmx->nested.pi_desc = NULL;
-			vmcs_write64(POSTED_INTR_DESC_ADDR, -1ull);
-		}
-		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->posted_intr_desc_addr);
-		if (is_error_page(page))
-			return;
-		vmx->nested.pi_desc_page = page;
-		vmx->nested.pi_desc = kmap(vmx->nested.pi_desc_page);
-		vmx->nested.pi_desc =
-			(struct pi_desc *)((void *)vmx->nested.pi_desc +
-			(unsigned long)(vmcs12->posted_intr_desc_addr &
-			(PAGE_SIZE - 1)));
-		vmcs_write64(POSTED_INTR_DESC_ADDR,
-			page_to_phys(vmx->nested.pi_desc_page) +
-			(unsigned long)(vmcs12->posted_intr_desc_addr &
-			(PAGE_SIZE - 1)));
-	}
-	if (nested_vmx_prepare_msr_bitmap(vcpu, vmcs12))
-		vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
-			      CPU_BASED_USE_MSR_BITMAPS);
-	else
-		vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
-				CPU_BASED_USE_MSR_BITMAPS);
-}
-
-static void vmx_start_preemption_timer(struct kvm_vcpu *vcpu)
-{
-	u64 preemption_timeout = get_vmcs12(vcpu)->vmx_preemption_timer_value;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * A timer value of zero is architecturally guaranteed to cause
-	 * a VMExit prior to executing any instructions in the guest.
-	 */
-	if (preemption_timeout == 0) {
-		vmx_preemption_timer_fn(&vmx->nested.preemption_timer);
-		return;
-	}
-
-	if (vcpu->arch.virtual_tsc_khz == 0)
-		return;
-
-	preemption_timeout <<= VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE;
-	preemption_timeout *= 1000000;
-	do_div(preemption_timeout, vcpu->arch.virtual_tsc_khz);
-	hrtimer_start(&vmx->nested.preemption_timer,
-		      ns_to_ktime(preemption_timeout), HRTIMER_MODE_REL);
-}
-
-static int nested_vmx_check_io_bitmap_controls(struct kvm_vcpu *vcpu,
-					       struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
-		return 0;
-
-	if (!page_address_valid(vcpu, vmcs12->io_bitmap_a) ||
-	    !page_address_valid(vcpu, vmcs12->io_bitmap_b))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu,
-						struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
-		return 0;
-
-	if (!page_address_valid(vcpu, vmcs12->msr_bitmap))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int nested_vmx_check_tpr_shadow_controls(struct kvm_vcpu *vcpu,
-						struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
-		return 0;
-
-	if (!page_address_valid(vcpu, vmcs12->virtual_apic_page_addr))
-		return -EINVAL;
-
-	return 0;
-}
-
-/*
- * Merge L0's and L1's MSR bitmap, return false to indicate that
- * we do not use the hardware.
- */
-static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
-						 struct vmcs12 *vmcs12)
-{
-	int msr;
-	struct page *page;
-	unsigned long *msr_bitmap_l1;
-	unsigned long *msr_bitmap_l0 = to_vmx(vcpu)->nested.vmcs02.msr_bitmap;
-	/*
-	 * pred_cmd & spec_ctrl are trying to verify two things:
-	 *
-	 * 1. L0 gave a permission to L1 to actually passthrough the MSR. This
-	 *    ensures that we do not accidentally generate an L02 MSR bitmap
-	 *    from the L12 MSR bitmap that is too permissive.
-	 * 2. That L1 or L2s have actually used the MSR. This avoids
-	 *    unnecessarily merging of the bitmap if the MSR is unused. This
-	 *    works properly because we only update the L01 MSR bitmap lazily.
-	 *    So even if L0 should pass L1 these MSRs, the L01 bitmap is only
-	 *    updated to reflect this when L1 (or its L2s) actually write to
-	 *    the MSR.
-	 */
-	bool pred_cmd = !msr_write_intercepted_l01(vcpu, MSR_IA32_PRED_CMD);
-	bool spec_ctrl = !msr_write_intercepted_l01(vcpu, MSR_IA32_SPEC_CTRL);
-
-	/* Nothing to do if the MSR bitmap is not in use.  */
-	if (!cpu_has_vmx_msr_bitmap() ||
-	    !nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
-		return false;
-
-	if (!nested_cpu_has_virt_x2apic_mode(vmcs12) &&
-	    !pred_cmd && !spec_ctrl)
-		return false;
-
-	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->msr_bitmap);
-	if (is_error_page(page))
-		return false;
-
-	msr_bitmap_l1 = (unsigned long *)kmap(page);
-	if (nested_cpu_has_apic_reg_virt(vmcs12)) {
-		/*
-		 * L0 need not intercept reads for MSRs between 0x800 and 0x8ff, it
-		 * just lets the processor take the value from the virtual-APIC page;
-		 * take those 256 bits directly from the L1 bitmap.
-		 */
-		for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
-			unsigned word = msr / BITS_PER_LONG;
-			msr_bitmap_l0[word] = msr_bitmap_l1[word];
-			msr_bitmap_l0[word + (0x800 / sizeof(long))] = ~0;
-		}
-	} else {
-		for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
-			unsigned word = msr / BITS_PER_LONG;
-			msr_bitmap_l0[word] = ~0;
-			msr_bitmap_l0[word + (0x800 / sizeof(long))] = ~0;
-		}
-	}
-
-	nested_vmx_disable_intercept_for_msr(
-		msr_bitmap_l1, msr_bitmap_l0,
-		X2APIC_MSR(APIC_TASKPRI),
-		MSR_TYPE_W);
-
-	if (nested_cpu_has_vid(vmcs12)) {
-		nested_vmx_disable_intercept_for_msr(
-			msr_bitmap_l1, msr_bitmap_l0,
-			X2APIC_MSR(APIC_EOI),
-			MSR_TYPE_W);
-		nested_vmx_disable_intercept_for_msr(
-			msr_bitmap_l1, msr_bitmap_l0,
-			X2APIC_MSR(APIC_SELF_IPI),
-			MSR_TYPE_W);
-	}
-
-	if (spec_ctrl)
-		nested_vmx_disable_intercept_for_msr(
-					msr_bitmap_l1, msr_bitmap_l0,
-					MSR_IA32_SPEC_CTRL,
-					MSR_TYPE_R | MSR_TYPE_W);
-
-	if (pred_cmd)
-		nested_vmx_disable_intercept_for_msr(
-					msr_bitmap_l1, msr_bitmap_l0,
-					MSR_IA32_PRED_CMD,
-					MSR_TYPE_W);
-
-	kunmap(page);
-	kvm_release_page_clean(page);
-
-	return true;
-}
-
-static void nested_cache_shadow_vmcs12(struct kvm_vcpu *vcpu,
-				       struct vmcs12 *vmcs12)
-{
-	struct vmcs12 *shadow;
-	struct page *page;
-
-	if (!nested_cpu_has_shadow_vmcs(vmcs12) ||
-	    vmcs12->vmcs_link_pointer == -1ull)
-		return;
-
-	shadow = get_shadow_vmcs12(vcpu);
-	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->vmcs_link_pointer);
-
-	memcpy(shadow, kmap(page), VMCS12_SIZE);
-
-	kunmap(page);
-	kvm_release_page_clean(page);
-}
-
-static void nested_flush_cached_shadow_vmcs12(struct kvm_vcpu *vcpu,
-					      struct vmcs12 *vmcs12)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	if (!nested_cpu_has_shadow_vmcs(vmcs12) ||
-	    vmcs12->vmcs_link_pointer == -1ull)
-		return;
-
-	kvm_write_guest(vmx->vcpu.kvm, vmcs12->vmcs_link_pointer,
-			get_shadow_vmcs12(vcpu), VMCS12_SIZE);
-}
-
-static int nested_vmx_check_apic_access_controls(struct kvm_vcpu *vcpu,
-					  struct vmcs12 *vmcs12)
-{
-	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES) &&
-	    !page_address_valid(vcpu, vmcs12->apic_access_addr))
-		return -EINVAL;
-	else
-		return 0;
-}
-
-static int nested_vmx_check_apicv_controls(struct kvm_vcpu *vcpu,
-					   struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has_virt_x2apic_mode(vmcs12) &&
-	    !nested_cpu_has_apic_reg_virt(vmcs12) &&
-	    !nested_cpu_has_vid(vmcs12) &&
-	    !nested_cpu_has_posted_intr(vmcs12))
-		return 0;
-
-	/*
-	 * If virtualize x2apic mode is enabled,
-	 * virtualize apic access must be disabled.
-	 */
-	if (nested_cpu_has_virt_x2apic_mode(vmcs12) &&
-	    nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
-		return -EINVAL;
-
-	/*
-	 * If virtual interrupt delivery is enabled,
-	 * we must exit on external interrupts.
-	 */
-	if (nested_cpu_has_vid(vmcs12) &&
-	   !nested_exit_on_intr(vcpu))
-		return -EINVAL;
-
-	/*
-	 * bits 15:8 should be zero in posted_intr_nv,
-	 * the descriptor address has been already checked
-	 * in nested_get_vmcs12_pages.
-	 *
-	 * bits 5:0 of posted_intr_desc_addr should be zero.
-	 */
-	if (nested_cpu_has_posted_intr(vmcs12) &&
-	   (!nested_cpu_has_vid(vmcs12) ||
-	    !nested_exit_intr_ack_set(vcpu) ||
-	    (vmcs12->posted_intr_nv & 0xff00) ||
-	    (vmcs12->posted_intr_desc_addr & 0x3f) ||
-	    (vmcs12->posted_intr_desc_addr >> cpuid_maxphyaddr(vcpu))))
-		return -EINVAL;
-
-	/* tpr shadow is needed by all apicv features. */
-	if (!nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int nested_vmx_check_msr_switch(struct kvm_vcpu *vcpu,
-				       unsigned long count_field,
-				       unsigned long addr_field)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	int maxphyaddr;
-	u64 count, addr;
-
-	if (vmcs12_read_any(vmcs12, count_field, &count) ||
-	    vmcs12_read_any(vmcs12, addr_field, &addr)) {
-		WARN_ON(1);
-		return -EINVAL;
-	}
-	if (count == 0)
-		return 0;
-	maxphyaddr = cpuid_maxphyaddr(vcpu);
-	if (!IS_ALIGNED(addr, 16) || addr >> maxphyaddr ||
-	    (addr + count * sizeof(struct vmx_msr_entry) - 1) >> maxphyaddr) {
-		pr_debug_ratelimited(
-			"nVMX: invalid MSR switch (0x%lx, %d, %llu, 0x%08llx)",
-			addr_field, maxphyaddr, count, addr);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static int nested_vmx_check_msr_switch_controls(struct kvm_vcpu *vcpu,
-						struct vmcs12 *vmcs12)
-{
-	if (vmcs12->vm_exit_msr_load_count == 0 &&
-	    vmcs12->vm_exit_msr_store_count == 0 &&
-	    vmcs12->vm_entry_msr_load_count == 0)
-		return 0; /* Fast path */
-	if (nested_vmx_check_msr_switch(vcpu, VM_EXIT_MSR_LOAD_COUNT,
-					VM_EXIT_MSR_LOAD_ADDR) ||
-	    nested_vmx_check_msr_switch(vcpu, VM_EXIT_MSR_STORE_COUNT,
-					VM_EXIT_MSR_STORE_ADDR) ||
-	    nested_vmx_check_msr_switch(vcpu, VM_ENTRY_MSR_LOAD_COUNT,
-					VM_ENTRY_MSR_LOAD_ADDR))
-		return -EINVAL;
-	return 0;
-}
-
-static int nested_vmx_check_pml_controls(struct kvm_vcpu *vcpu,
-					 struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has_pml(vmcs12))
-		return 0;
-
-	if (!nested_cpu_has_ept(vmcs12) ||
-	    !page_address_valid(vcpu, vmcs12->pml_address))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int nested_vmx_check_shadow_vmcs_controls(struct kvm_vcpu *vcpu,
-						 struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has_shadow_vmcs(vmcs12))
-		return 0;
-
-	if (!page_address_valid(vcpu, vmcs12->vmread_bitmap) ||
-	    !page_address_valid(vcpu, vmcs12->vmwrite_bitmap))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int nested_vmx_msr_check_common(struct kvm_vcpu *vcpu,
-				       struct vmx_msr_entry *e)
-{
-	/* x2APIC MSR accesses are not allowed */
-	if (vcpu->arch.apic_base & X2APIC_ENABLE && e->index >> 8 == 0x8)
-		return -EINVAL;
-	if (e->index == MSR_IA32_UCODE_WRITE || /* SDM Table 35-2 */
-	    e->index == MSR_IA32_UCODE_REV)
-		return -EINVAL;
-	if (e->reserved != 0)
-		return -EINVAL;
-	return 0;
-}
-
-static int nested_vmx_load_msr_check(struct kvm_vcpu *vcpu,
-				     struct vmx_msr_entry *e)
-{
-	if (e->index == MSR_FS_BASE ||
-	    e->index == MSR_GS_BASE ||
-	    e->index == MSR_IA32_SMM_MONITOR_CTL || /* SMM is not supported */
-	    nested_vmx_msr_check_common(vcpu, e))
-		return -EINVAL;
-	return 0;
-}
-
-static int nested_vmx_store_msr_check(struct kvm_vcpu *vcpu,
-				      struct vmx_msr_entry *e)
-{
-	if (e->index == MSR_IA32_SMBASE || /* SMM is not supported */
-	    nested_vmx_msr_check_common(vcpu, e))
-		return -EINVAL;
-	return 0;
-}
-
-/*
- * Load guest's/host's msr at nested entry/exit.
- * return 0 for success, entry index for failure.
- */
-static u32 nested_vmx_load_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
-{
-	u32 i;
-	struct vmx_msr_entry e;
-	struct msr_data msr;
-
-	msr.host_initiated = false;
-	for (i = 0; i < count; i++) {
-		if (kvm_vcpu_read_guest(vcpu, gpa + i * sizeof(e),
-					&e, sizeof(e))) {
-			pr_debug_ratelimited(
-				"%s cannot read MSR entry (%u, 0x%08llx)\n",
-				__func__, i, gpa + i * sizeof(e));
-			goto fail;
-		}
-		if (nested_vmx_load_msr_check(vcpu, &e)) {
-			pr_debug_ratelimited(
-				"%s check failed (%u, 0x%x, 0x%x)\n",
-				__func__, i, e.index, e.reserved);
-			goto fail;
-		}
-		msr.index = e.index;
-		msr.data = e.value;
-		if (kvm_set_msr(vcpu, &msr)) {
-			pr_debug_ratelimited(
-				"%s cannot write MSR (%u, 0x%x, 0x%llx)\n",
-				__func__, i, e.index, e.value);
-			goto fail;
-		}
-	}
-	return 0;
-fail:
-	return i + 1;
-}
-
-static int nested_vmx_store_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
-{
-	u32 i;
-	struct vmx_msr_entry e;
-
-	for (i = 0; i < count; i++) {
-		struct msr_data msr_info;
-		if (kvm_vcpu_read_guest(vcpu,
-					gpa + i * sizeof(e),
-					&e, 2 * sizeof(u32))) {
-			pr_debug_ratelimited(
-				"%s cannot read MSR entry (%u, 0x%08llx)\n",
-				__func__, i, gpa + i * sizeof(e));
-			return -EINVAL;
-		}
-		if (nested_vmx_store_msr_check(vcpu, &e)) {
-			pr_debug_ratelimited(
-				"%s check failed (%u, 0x%x, 0x%x)\n",
-				__func__, i, e.index, e.reserved);
-			return -EINVAL;
-		}
-		msr_info.host_initiated = false;
-		msr_info.index = e.index;
-		if (kvm_get_msr(vcpu, &msr_info)) {
-			pr_debug_ratelimited(
-				"%s cannot read MSR (%u, 0x%x)\n",
-				__func__, i, e.index);
-			return -EINVAL;
-		}
-		if (kvm_vcpu_write_guest(vcpu,
-					 gpa + i * sizeof(e) +
-					     offsetof(struct vmx_msr_entry, value),
-					 &msr_info.data, sizeof(msr_info.data))) {
-			pr_debug_ratelimited(
-				"%s cannot write MSR (%u, 0x%x, 0x%llx)\n",
-				__func__, i, e.index, msr_info.data);
-			return -EINVAL;
-		}
-	}
-	return 0;
-}
-
-static bool nested_cr3_valid(struct kvm_vcpu *vcpu, unsigned long val)
-{
-	unsigned long invalid_mask;
-
-	invalid_mask = (~0ULL) << cpuid_maxphyaddr(vcpu);
-	return (val & invalid_mask) == 0;
-}
-
-/*
- * Load guest's/host's cr3 at nested entry/exit. nested_ept is true if we are
- * emulating VM entry into a guest with EPT enabled.
- * Returns 0 on success, 1 on failure. Invalid state exit qualification code
- * is assigned to entry_failure_code on failure.
- */
-static int nested_vmx_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3, bool nested_ept,
-			       u32 *entry_failure_code)
-{
-	if (cr3 != kvm_read_cr3(vcpu) || (!nested_ept && pdptrs_changed(vcpu))) {
-		if (!nested_cr3_valid(vcpu, cr3)) {
-			*entry_failure_code = ENTRY_FAIL_DEFAULT;
-			return 1;
-		}
-
-		/*
-		 * If PAE paging and EPT are both on, CR3 is not used by the CPU and
-		 * must not be dereferenced.
-		 */
-		if (!is_long_mode(vcpu) && is_pae(vcpu) && is_paging(vcpu) &&
-		    !nested_ept) {
-			if (!load_pdptrs(vcpu, vcpu->arch.walk_mmu, cr3)) {
-				*entry_failure_code = ENTRY_FAIL_PDPTE;
-				return 1;
-			}
-		}
-	}
-
-	if (!nested_ept)
-		kvm_mmu_new_cr3(vcpu, cr3, false);
-
-	vcpu->arch.cr3 = cr3;
-	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
-
-	kvm_init_mmu(vcpu, false);
-
-	return 0;
-}
-
-/*
- * Returns if KVM is able to config CPU to tag TLB entries
- * populated by L2 differently than TLB entries populated
- * by L1.
- *
- * If L1 uses EPT, then TLB entries are tagged with different EPTP.
- *
- * If L1 uses VPID and we allocated a vpid02, TLB entries are tagged
- * with different VPID (L1 entries are tagged with vmx->vpid
- * while L2 entries are tagged with vmx->nested.vpid02).
- */
-static bool nested_has_guest_tlb_tag(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	return nested_cpu_has_ept(vmcs12) ||
-	       (nested_cpu_has_vpid(vmcs12) && to_vmx(vcpu)->nested.vpid02);
-}
-
-static u64 nested_vmx_calc_efer(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
-{
-	if (vmx->nested.nested_run_pending &&
-	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER))
-		return vmcs12->guest_ia32_efer;
-	else if (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE)
-		return vmx->vcpu.arch.efer | (EFER_LMA | EFER_LME);
-	else
-		return vmx->vcpu.arch.efer & ~(EFER_LMA | EFER_LME);
-}
-
-static void prepare_vmcs02_constant_state(struct vcpu_vmx *vmx)
-{
-	/*
-	 * If vmcs02 hasn't been initialized, set the constant vmcs02 state
-	 * according to L0's settings (vmcs12 is irrelevant here).  Host
-	 * fields that come from L0 and are not constant, e.g. HOST_CR3,
-	 * will be set as needed prior to VMLAUNCH/VMRESUME.
-	 */
-	if (vmx->nested.vmcs02_initialized)
-		return;
-	vmx->nested.vmcs02_initialized = true;
-
-	/*
-	 * We don't care what the EPTP value is we just need to guarantee
-	 * it's valid so we don't get a false positive when doing early
-	 * consistency checks.
-	 */
-	if (enable_ept && nested_early_check)
-		vmcs_write64(EPT_POINTER, construct_eptp(&vmx->vcpu, 0));
-
-	/* All VMFUNCs are currently emulated through L0 vmexits.  */
-	if (cpu_has_vmx_vmfunc())
-		vmcs_write64(VM_FUNCTION_CONTROL, 0);
-
-	if (cpu_has_vmx_posted_intr())
-		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_NESTED_VECTOR);
-
-	if (cpu_has_vmx_msr_bitmap())
-		vmcs_write64(MSR_BITMAP, __pa(vmx->nested.vmcs02.msr_bitmap));
-
-	if (enable_pml)
-		vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
-
-	/*
-	 * Set the MSR load/store lists to match L0's settings.  Only the
-	 * addresses are constant (for vmcs02), the counts can change based
-	 * on L2's behavior, e.g. switching to/from long mode.
-	 */
-	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
-	vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
-	vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
-
-	vmx_set_constant_host_state(vmx);
-}
-
-static void prepare_vmcs02_early_full(struct vcpu_vmx *vmx,
-				      struct vmcs12 *vmcs12)
-{
-	prepare_vmcs02_constant_state(vmx);
-
-	vmcs_write64(VMCS_LINK_POINTER, -1ull);
-
-	if (enable_vpid) {
-		if (nested_cpu_has_vpid(vmcs12) && vmx->nested.vpid02)
-			vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->nested.vpid02);
-		else
-			vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
-	}
-}
-
-static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
-{
-	u32 exec_control, vmcs12_exec_ctrl;
-	u64 guest_efer = nested_vmx_calc_efer(vmx, vmcs12);
-
-	if (vmx->nested.dirty_vmcs12 || vmx->nested.hv_evmcs)
-		prepare_vmcs02_early_full(vmx, vmcs12);
-
-	/*
-	 * HOST_RSP is normally set correctly in vmx_vcpu_run() just before
-	 * entry, but only if the current (host) sp changed from the value
-	 * we wrote last (vmx->host_rsp).  This cache is no longer relevant
-	 * if we switch vmcs, and rather than hold a separate cache per vmcs,
-	 * here we just force the write to happen on entry.  host_rsp will
-	 * also be written unconditionally by nested_vmx_check_vmentry_hw()
-	 * if we are doing early consistency checks via hardware.
-	 */
-	vmx->host_rsp = 0;
-
-	/*
-	 * PIN CONTROLS
-	 */
-	exec_control = vmcs12->pin_based_vm_exec_control;
-
-	/* Preemption timer setting is computed directly in vmx_vcpu_run.  */
-	exec_control |= vmcs_config.pin_based_exec_ctrl;
-	exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
-	vmx->loaded_vmcs->hv_timer_armed = false;
-
-	/* Posted interrupts setting is only taken from vmcs12.  */
-	if (nested_cpu_has_posted_intr(vmcs12)) {
-		vmx->nested.posted_intr_nv = vmcs12->posted_intr_nv;
-		vmx->nested.pi_pending = false;
-	} else {
-		exec_control &= ~PIN_BASED_POSTED_INTR;
-	}
-	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control);
-
-	/*
-	 * EXEC CONTROLS
-	 */
-	exec_control = vmx_exec_control(vmx); /* L0's desires */
-	exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
-	exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
-	exec_control &= ~CPU_BASED_TPR_SHADOW;
-	exec_control |= vmcs12->cpu_based_vm_exec_control;
-
-	/*
-	 * Write an illegal value to VIRTUAL_APIC_PAGE_ADDR. Later, if
-	 * nested_get_vmcs12_pages can't fix it up, the illegal value
-	 * will result in a VM entry failure.
-	 */
-	if (exec_control & CPU_BASED_TPR_SHADOW) {
-		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, -1ull);
-		vmcs_write32(TPR_THRESHOLD, vmcs12->tpr_threshold);
-	} else {
-#ifdef CONFIG_X86_64
-		exec_control |= CPU_BASED_CR8_LOAD_EXITING |
-				CPU_BASED_CR8_STORE_EXITING;
-#endif
-	}
-
-	/*
-	 * A vmexit (to either L1 hypervisor or L0 userspace) is always needed
-	 * for I/O port accesses.
-	 */
-	exec_control &= ~CPU_BASED_USE_IO_BITMAPS;
-	exec_control |= CPU_BASED_UNCOND_IO_EXITING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control);
-
-	/*
-	 * SECONDARY EXEC CONTROLS
-	 */
-	if (cpu_has_secondary_exec_ctrls()) {
-		exec_control = vmx->secondary_exec_control;
-
-		/* Take the following fields only from vmcs12 */
-		exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
-				  SECONDARY_EXEC_ENABLE_INVPCID |
-				  SECONDARY_EXEC_RDTSCP |
-				  SECONDARY_EXEC_XSAVES |
-				  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
-				  SECONDARY_EXEC_APIC_REGISTER_VIRT |
-				  SECONDARY_EXEC_ENABLE_VMFUNC);
-		if (nested_cpu_has(vmcs12,
-				   CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)) {
-			vmcs12_exec_ctrl = vmcs12->secondary_vm_exec_control &
-				~SECONDARY_EXEC_ENABLE_PML;
-			exec_control |= vmcs12_exec_ctrl;
-		}
-
-		/* VMCS shadowing for L2 is emulated for now */
-		exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
-
-		if (exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
-			vmcs_write16(GUEST_INTR_STATUS,
-				vmcs12->guest_intr_status);
-
-		/*
-		 * Write an illegal value to APIC_ACCESS_ADDR. Later,
-		 * nested_get_vmcs12_pages will either fix it up or
-		 * remove the VM execution control.
-		 */
-		if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
-			vmcs_write64(APIC_ACCESS_ADDR, -1ull);
-
-		if (exec_control & SECONDARY_EXEC_ENCLS_EXITING)
-			vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
-
-		vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
-	}
-
-	/*
-	 * ENTRY CONTROLS
-	 *
-	 * vmcs12's VM_{ENTRY,EXIT}_LOAD_IA32_EFER and VM_ENTRY_IA32E_MODE
-	 * are emulated by vmx_set_efer() in prepare_vmcs02(), but speculate
-	 * on the related bits (if supported by the CPU) in the hope that
-	 * we can avoid VMWrites during vmx_set_efer().
-	 */
-	exec_control = (vmcs12->vm_entry_controls | vmcs_config.vmentry_ctrl) &
-			~VM_ENTRY_IA32E_MODE & ~VM_ENTRY_LOAD_IA32_EFER;
-	if (cpu_has_load_ia32_efer) {
-		if (guest_efer & EFER_LMA)
-			exec_control |= VM_ENTRY_IA32E_MODE;
-		if (guest_efer != host_efer)
-			exec_control |= VM_ENTRY_LOAD_IA32_EFER;
-	}
-	vm_entry_controls_init(vmx, exec_control);
-
-	/*
-	 * EXIT CONTROLS
-	 *
-	 * L2->L1 exit controls are emulated - the hardware exit is to L0 so
-	 * we should use its exit controls. Note that VM_EXIT_LOAD_IA32_EFER
-	 * bits may be modified by vmx_set_efer() in prepare_vmcs02().
-	 */
-	exec_control = vmcs_config.vmexit_ctrl;
-	if (cpu_has_load_ia32_efer && guest_efer != host_efer)
-		exec_control |= VM_EXIT_LOAD_IA32_EFER;
-	vm_exit_controls_init(vmx, exec_control);
-
-	/*
-	 * Conceptually we want to copy the PML address and index from
-	 * vmcs01 here, and then back to vmcs01 on nested vmexit. But,
-	 * since we always flush the log on each vmexit and never change
-	 * the PML address (once set), this happens to be equivalent to
-	 * simply resetting the index in vmcs02.
-	 */
-	if (enable_pml)
-		vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
-
-	/*
-	 * Interrupt/Exception Fields
-	 */
-	if (vmx->nested.nested_run_pending) {
-		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
-			     vmcs12->vm_entry_intr_info_field);
-		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
-			     vmcs12->vm_entry_exception_error_code);
-		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
-			     vmcs12->vm_entry_instruction_len);
-		vmcs_write32(GUEST_INTERRUPTIBILITY_INFO,
-			     vmcs12->guest_interruptibility_info);
-		vmx->loaded_vmcs->nmi_known_unmasked =
-			!(vmcs12->guest_interruptibility_info & GUEST_INTR_STATE_NMI);
-	} else {
-		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
-	}
-}
-
-static void prepare_vmcs02_full(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
-{
-	struct hv_enlightened_vmcs *hv_evmcs = vmx->nested.hv_evmcs;
-
-	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
-			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2)) {
-		vmcs_write16(GUEST_ES_SELECTOR, vmcs12->guest_es_selector);
-		vmcs_write16(GUEST_CS_SELECTOR, vmcs12->guest_cs_selector);
-		vmcs_write16(GUEST_SS_SELECTOR, vmcs12->guest_ss_selector);
-		vmcs_write16(GUEST_DS_SELECTOR, vmcs12->guest_ds_selector);
-		vmcs_write16(GUEST_FS_SELECTOR, vmcs12->guest_fs_selector);
-		vmcs_write16(GUEST_GS_SELECTOR, vmcs12->guest_gs_selector);
-		vmcs_write16(GUEST_LDTR_SELECTOR, vmcs12->guest_ldtr_selector);
-		vmcs_write16(GUEST_TR_SELECTOR, vmcs12->guest_tr_selector);
-		vmcs_write32(GUEST_ES_LIMIT, vmcs12->guest_es_limit);
-		vmcs_write32(GUEST_CS_LIMIT, vmcs12->guest_cs_limit);
-		vmcs_write32(GUEST_SS_LIMIT, vmcs12->guest_ss_limit);
-		vmcs_write32(GUEST_DS_LIMIT, vmcs12->guest_ds_limit);
-		vmcs_write32(GUEST_FS_LIMIT, vmcs12->guest_fs_limit);
-		vmcs_write32(GUEST_GS_LIMIT, vmcs12->guest_gs_limit);
-		vmcs_write32(GUEST_LDTR_LIMIT, vmcs12->guest_ldtr_limit);
-		vmcs_write32(GUEST_TR_LIMIT, vmcs12->guest_tr_limit);
-		vmcs_write32(GUEST_GDTR_LIMIT, vmcs12->guest_gdtr_limit);
-		vmcs_write32(GUEST_IDTR_LIMIT, vmcs12->guest_idtr_limit);
-		vmcs_write32(GUEST_ES_AR_BYTES, vmcs12->guest_es_ar_bytes);
-		vmcs_write32(GUEST_DS_AR_BYTES, vmcs12->guest_ds_ar_bytes);
-		vmcs_write32(GUEST_FS_AR_BYTES, vmcs12->guest_fs_ar_bytes);
-		vmcs_write32(GUEST_GS_AR_BYTES, vmcs12->guest_gs_ar_bytes);
-		vmcs_write32(GUEST_LDTR_AR_BYTES, vmcs12->guest_ldtr_ar_bytes);
-		vmcs_write32(GUEST_TR_AR_BYTES, vmcs12->guest_tr_ar_bytes);
-		vmcs_writel(GUEST_ES_BASE, vmcs12->guest_es_base);
-		vmcs_writel(GUEST_CS_BASE, vmcs12->guest_cs_base);
-		vmcs_writel(GUEST_SS_BASE, vmcs12->guest_ss_base);
-		vmcs_writel(GUEST_DS_BASE, vmcs12->guest_ds_base);
-		vmcs_writel(GUEST_FS_BASE, vmcs12->guest_fs_base);
-		vmcs_writel(GUEST_GS_BASE, vmcs12->guest_gs_base);
-		vmcs_writel(GUEST_LDTR_BASE, vmcs12->guest_ldtr_base);
-		vmcs_writel(GUEST_TR_BASE, vmcs12->guest_tr_base);
-		vmcs_writel(GUEST_GDTR_BASE, vmcs12->guest_gdtr_base);
-		vmcs_writel(GUEST_IDTR_BASE, vmcs12->guest_idtr_base);
-	}
-
-	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
-			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1)) {
-		vmcs_write32(GUEST_SYSENTER_CS, vmcs12->guest_sysenter_cs);
-		vmcs_writel(GUEST_PENDING_DBG_EXCEPTIONS,
-			    vmcs12->guest_pending_dbg_exceptions);
-		vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->guest_sysenter_esp);
-		vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->guest_sysenter_eip);
-
-		/*
-		 * L1 may access the L2's PDPTR, so save them to construct
-		 * vmcs12
-		 */
-		if (enable_ept) {
-			vmcs_write64(GUEST_PDPTR0, vmcs12->guest_pdptr0);
-			vmcs_write64(GUEST_PDPTR1, vmcs12->guest_pdptr1);
-			vmcs_write64(GUEST_PDPTR2, vmcs12->guest_pdptr2);
-			vmcs_write64(GUEST_PDPTR3, vmcs12->guest_pdptr3);
-		}
-	}
-
-	if (nested_cpu_has_xsaves(vmcs12))
-		vmcs_write64(XSS_EXIT_BITMAP, vmcs12->xss_exit_bitmap);
-
-	/*
-	 * Whether page-faults are trapped is determined by a combination of
-	 * 3 settings: PFEC_MASK, PFEC_MATCH and EXCEPTION_BITMAP.PF.
-	 * If enable_ept, L0 doesn't care about page faults and we should
-	 * set all of these to L1's desires. However, if !enable_ept, L0 does
-	 * care about (at least some) page faults, and because it is not easy
-	 * (if at all possible?) to merge L0 and L1's desires, we simply ask
-	 * to exit on each and every L2 page fault. This is done by setting
-	 * MASK=MATCH=0 and (see below) EB.PF=1.
-	 * Note that below we don't need special code to set EB.PF beyond the
-	 * "or"ing of the EB of vmcs01 and vmcs12, because when enable_ept,
-	 * vmcs01's EB.PF is 0 so the "or" will take vmcs12's value, and when
-	 * !enable_ept, EB.PF is 1, so the "or" will always be 1.
-	 */
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK,
-		enable_ept ? vmcs12->page_fault_error_code_mask : 0);
-	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH,
-		enable_ept ? vmcs12->page_fault_error_code_match : 0);
-
-	if (cpu_has_vmx_apicv()) {
-		vmcs_write64(EOI_EXIT_BITMAP0, vmcs12->eoi_exit_bitmap0);
-		vmcs_write64(EOI_EXIT_BITMAP1, vmcs12->eoi_exit_bitmap1);
-		vmcs_write64(EOI_EXIT_BITMAP2, vmcs12->eoi_exit_bitmap2);
-		vmcs_write64(EOI_EXIT_BITMAP3, vmcs12->eoi_exit_bitmap3);
-	}
-
-	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
-	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
-
-	set_cr4_guest_host_mask(vmx);
-
-	if (kvm_mpx_supported()) {
-		if (vmx->nested.nested_run_pending &&
-			(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS))
-			vmcs_write64(GUEST_BNDCFGS, vmcs12->guest_bndcfgs);
-		else
-			vmcs_write64(GUEST_BNDCFGS, vmx->nested.vmcs01_guest_bndcfgs);
-	}
-}
-
-/*
- * prepare_vmcs02 is called when the L1 guest hypervisor runs its nested
- * L2 guest. L1 has a vmcs for L2 (vmcs12), and this function "merges" it
- * with L0's requirements for its guest (a.k.a. vmcs01), so we can run the L2
- * guest in a way that will both be appropriate to L1's requests, and our
- * needs. In addition to modifying the active vmcs (which is vmcs02), this
- * function also has additional necessary side-effects, like setting various
- * vcpu->arch fields.
- * Returns 0 on success, 1 on failure. Invalid state exit qualification code
- * is assigned to entry_failure_code on failure.
- */
-static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
-			  u32 *entry_failure_code)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct hv_enlightened_vmcs *hv_evmcs = vmx->nested.hv_evmcs;
-
-	if (vmx->nested.dirty_vmcs12 || vmx->nested.hv_evmcs) {
-		prepare_vmcs02_full(vmx, vmcs12);
-		vmx->nested.dirty_vmcs12 = false;
-	}
-
-	/*
-	 * First, the fields that are shadowed.  This must be kept in sync
-	 * with vmx_shadow_fields.h.
-	 */
-	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
-			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2)) {
-		vmcs_write32(GUEST_CS_AR_BYTES, vmcs12->guest_cs_ar_bytes);
-		vmcs_write32(GUEST_SS_AR_BYTES, vmcs12->guest_ss_ar_bytes);
-	}
-
-	if (vmx->nested.nested_run_pending &&
-	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS)) {
-		kvm_set_dr(vcpu, 7, vmcs12->guest_dr7);
-		vmcs_write64(GUEST_IA32_DEBUGCTL, vmcs12->guest_ia32_debugctl);
-	} else {
-		kvm_set_dr(vcpu, 7, vcpu->arch.dr7);
-		vmcs_write64(GUEST_IA32_DEBUGCTL, vmx->nested.vmcs01_debugctl);
-	}
-	vmx_set_rflags(vcpu, vmcs12->guest_rflags);
-
-	vmx->nested.preemption_timer_expired = false;
-	if (nested_cpu_has_preemption_timer(vmcs12))
-		vmx_start_preemption_timer(vcpu);
-
-	/* EXCEPTION_BITMAP and CR0_GUEST_HOST_MASK should basically be the
-	 * bitwise-or of what L1 wants to trap for L2, and what we want to
-	 * trap. Note that CR0.TS also needs updating - we do this later.
-	 */
-	update_exception_bitmap(vcpu);
-	vcpu->arch.cr0_guest_owned_bits &= ~vmcs12->cr0_guest_host_mask;
-	vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits);
-
-	if (vmx->nested.nested_run_pending &&
-	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_PAT)) {
-		vmcs_write64(GUEST_IA32_PAT, vmcs12->guest_ia32_pat);
-		vcpu->arch.pat = vmcs12->guest_ia32_pat;
-	} else if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
-		vmcs_write64(GUEST_IA32_PAT, vmx->vcpu.arch.pat);
-	}
-
-	vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
-
-	if (kvm_has_tsc_control)
-		decache_tsc_multiplier(vmx);
-
-	if (enable_vpid) {
-		/*
-		 * There is no direct mapping between vpid02 and vpid12, the
-		 * vpid02 is per-vCPU for L0 and reused while the value of
-		 * vpid12 is changed w/ one invvpid during nested vmentry.
-		 * The vpid12 is allocated by L1 for L2, so it will not
-		 * influence global bitmap(for vpid01 and vpid02 allocation)
-		 * even if spawn a lot of nested vCPUs.
-		 */
-		if (nested_cpu_has_vpid(vmcs12) && nested_has_guest_tlb_tag(vcpu)) {
-			if (vmcs12->virtual_processor_id != vmx->nested.last_vpid) {
-				vmx->nested.last_vpid = vmcs12->virtual_processor_id;
-				__vmx_flush_tlb(vcpu, nested_get_vpid02(vcpu), false);
-			}
-		} else {
-			/*
-			 * If L1 use EPT, then L0 needs to execute INVEPT on
-			 * EPTP02 instead of EPTP01. Therefore, delay TLB
-			 * flush until vmcs02->eptp is fully updated by
-			 * KVM_REQ_LOAD_CR3. Note that this assumes
-			 * KVM_REQ_TLB_FLUSH is evaluated after
-			 * KVM_REQ_LOAD_CR3 in vcpu_enter_guest().
-			 */
-			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
-		}
-	}
-
-	if (nested_cpu_has_ept(vmcs12))
-		nested_ept_init_mmu_context(vcpu);
-	else if (nested_cpu_has2(vmcs12,
-				 SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
-		vmx_flush_tlb(vcpu, true);
-
-	/*
-	 * This sets GUEST_CR0 to vmcs12->guest_cr0, possibly modifying those
-	 * bits which we consider mandatory enabled.
-	 * The CR0_READ_SHADOW is what L2 should have expected to read given
-	 * the specifications by L1; It's not enough to take
-	 * vmcs12->cr0_read_shadow because on our cr0_guest_host_mask we we
-	 * have more bits than L1 expected.
-	 */
-	vmx_set_cr0(vcpu, vmcs12->guest_cr0);
-	vmcs_writel(CR0_READ_SHADOW, nested_read_cr0(vmcs12));
-
-	vmx_set_cr4(vcpu, vmcs12->guest_cr4);
-	vmcs_writel(CR4_READ_SHADOW, nested_read_cr4(vmcs12));
-
-	vcpu->arch.efer = nested_vmx_calc_efer(vmx, vmcs12);
-	/* Note: may modify VM_ENTRY/EXIT_CONTROLS and GUEST/HOST_IA32_EFER */
-	vmx_set_efer(vcpu, vcpu->arch.efer);
-
-	/*
-	 * Guest state is invalid and unrestricted guest is disabled,
-	 * which means L1 attempted VMEntry to L2 with invalid state.
-	 * Fail the VMEntry.
-	 */
-	if (vmx->emulation_required) {
-		*entry_failure_code = ENTRY_FAIL_DEFAULT;
-		return 1;
-	}
-
-	/* Shadow page tables on either EPT or shadow page tables. */
-	if (nested_vmx_load_cr3(vcpu, vmcs12->guest_cr3, nested_cpu_has_ept(vmcs12),
-				entry_failure_code))
-		return 1;
-
-	if (!enable_ept)
-		vcpu->arch.walk_mmu->inject_page_fault = vmx_inject_page_fault_nested;
-
-	kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->guest_rsp);
-	kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->guest_rip);
-	return 0;
-}
-
-static int nested_vmx_check_nmi_controls(struct vmcs12 *vmcs12)
-{
-	if (!nested_cpu_has_nmi_exiting(vmcs12) &&
-	    nested_cpu_has_virtual_nmis(vmcs12))
-		return -EINVAL;
-
-	if (!nested_cpu_has_virtual_nmis(vmcs12) &&
-	    nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	bool ia32e;
-
-	if (vmcs12->guest_activity_state != GUEST_ACTIVITY_ACTIVE &&
-	    vmcs12->guest_activity_state != GUEST_ACTIVITY_HLT)
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_cpu_has_vpid(vmcs12) && !vmcs12->virtual_processor_id)
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_io_bitmap_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_msr_bitmap_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_apic_access_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_tpr_shadow_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_apicv_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_msr_switch_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_pml_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_shadow_vmcs_controls(vcpu, vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (!vmx_control_verify(vmcs12->cpu_based_vm_exec_control,
-				vmx->nested.msrs.procbased_ctls_low,
-				vmx->nested.msrs.procbased_ctls_high) ||
-	    (nested_cpu_has(vmcs12, CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) &&
-	     !vmx_control_verify(vmcs12->secondary_vm_exec_control,
-				 vmx->nested.msrs.secondary_ctls_low,
-				 vmx->nested.msrs.secondary_ctls_high)) ||
-	    !vmx_control_verify(vmcs12->pin_based_vm_exec_control,
-				vmx->nested.msrs.pinbased_ctls_low,
-				vmx->nested.msrs.pinbased_ctls_high) ||
-	    !vmx_control_verify(vmcs12->vm_exit_controls,
-				vmx->nested.msrs.exit_ctls_low,
-				vmx->nested.msrs.exit_ctls_high) ||
-	    !vmx_control_verify(vmcs12->vm_entry_controls,
-				vmx->nested.msrs.entry_ctls_low,
-				vmx->nested.msrs.entry_ctls_high))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_vmx_check_nmi_controls(vmcs12))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (nested_cpu_has_vmfunc(vmcs12)) {
-		if (vmcs12->vm_function_control &
-		    ~vmx->nested.msrs.vmfunc_controls)
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		if (nested_cpu_has_eptp_switching(vmcs12)) {
-			if (!nested_cpu_has_ept(vmcs12) ||
-			    !page_address_valid(vcpu, vmcs12->eptp_list_address))
-				return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-		}
-	}
-
-	if (vmcs12->cr3_target_count > nested_cpu_vmx_misc_cr3_count(vcpu))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	if (!nested_host_cr0_valid(vcpu, vmcs12->host_cr0) ||
-	    !nested_host_cr4_valid(vcpu, vmcs12->host_cr4) ||
-	    !nested_cr3_valid(vcpu, vmcs12->host_cr3))
-		return VMXERR_ENTRY_INVALID_HOST_STATE_FIELD;
-
-	/*
-	 * If the load IA32_EFER VM-exit control is 1, bits reserved in the
-	 * IA32_EFER MSR must be 0 in the field for that register. In addition,
-	 * the values of the LMA and LME bits in the field must each be that of
-	 * the host address-space size VM-exit control.
-	 */
-	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_EFER) {
-		ia32e = (vmcs12->vm_exit_controls &
-			 VM_EXIT_HOST_ADDR_SPACE_SIZE) != 0;
-		if (!kvm_valid_efer(vcpu, vmcs12->host_ia32_efer) ||
-		    ia32e != !!(vmcs12->host_ia32_efer & EFER_LMA) ||
-		    ia32e != !!(vmcs12->host_ia32_efer & EFER_LME))
-			return VMXERR_ENTRY_INVALID_HOST_STATE_FIELD;
-	}
-
-	/*
-	 * From the Intel SDM, volume 3:
-	 * Fields relevant to VM-entry event injection must be set properly.
-	 * These fields are the VM-entry interruption-information field, the
-	 * VM-entry exception error code, and the VM-entry instruction length.
-	 */
-	if (vmcs12->vm_entry_intr_info_field & INTR_INFO_VALID_MASK) {
-		u32 intr_info = vmcs12->vm_entry_intr_info_field;
-		u8 vector = intr_info & INTR_INFO_VECTOR_MASK;
-		u32 intr_type = intr_info & INTR_INFO_INTR_TYPE_MASK;
-		bool has_error_code = intr_info & INTR_INFO_DELIVER_CODE_MASK;
-		bool should_have_error_code;
-		bool urg = nested_cpu_has2(vmcs12,
-					   SECONDARY_EXEC_UNRESTRICTED_GUEST);
-		bool prot_mode = !urg || vmcs12->guest_cr0 & X86_CR0_PE;
-
-		/* VM-entry interruption-info field: interruption type */
-		if (intr_type == INTR_TYPE_RESERVED ||
-		    (intr_type == INTR_TYPE_OTHER_EVENT &&
-		     !nested_cpu_supports_monitor_trap_flag(vcpu)))
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		/* VM-entry interruption-info field: vector */
-		if ((intr_type == INTR_TYPE_NMI_INTR && vector != NMI_VECTOR) ||
-		    (intr_type == INTR_TYPE_HARD_EXCEPTION && vector > 31) ||
-		    (intr_type == INTR_TYPE_OTHER_EVENT && vector != 0))
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		/* VM-entry interruption-info field: deliver error code */
-		should_have_error_code =
-			intr_type == INTR_TYPE_HARD_EXCEPTION && prot_mode &&
-			x86_exception_has_error_code(vector);
-		if (has_error_code != should_have_error_code)
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		/* VM-entry exception error code */
-		if (has_error_code &&
-		    vmcs12->vm_entry_exception_error_code & GENMASK(31, 15))
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		/* VM-entry interruption-info field: reserved bits */
-		if (intr_info & INTR_INFO_RESVD_BITS_MASK)
-			return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-		/* VM-entry instruction length */
-		switch (intr_type) {
-		case INTR_TYPE_SOFT_EXCEPTION:
-		case INTR_TYPE_SOFT_INTR:
-		case INTR_TYPE_PRIV_SW_EXCEPTION:
-			if ((vmcs12->vm_entry_instruction_len > 15) ||
-			    (vmcs12->vm_entry_instruction_len == 0 &&
-			     !nested_cpu_has_zero_length_injection(vcpu)))
-				return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-		}
-	}
-
-	if (nested_cpu_has_ept(vmcs12) &&
-	    !valid_ept_address(vcpu, vmcs12->ept_pointer))
-		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
-
-	return 0;
-}
-
-static int nested_vmx_check_vmcs_link_ptr(struct kvm_vcpu *vcpu,
-					  struct vmcs12 *vmcs12)
-{
-	int r;
-	struct page *page;
-	struct vmcs12 *shadow;
-
-	if (vmcs12->vmcs_link_pointer == -1ull)
-		return 0;
-
-	if (!page_address_valid(vcpu, vmcs12->vmcs_link_pointer))
-		return -EINVAL;
-
-	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->vmcs_link_pointer);
-	if (is_error_page(page))
-		return -EINVAL;
-
-	r = 0;
-	shadow = kmap(page);
-	if (shadow->hdr.revision_id != VMCS12_REVISION ||
-	    shadow->hdr.shadow_vmcs != nested_cpu_has_shadow_vmcs(vmcs12))
-		r = -EINVAL;
-	kunmap(page);
-	kvm_release_page_clean(page);
-	return r;
-}
-
-static int check_vmentry_postreqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
-				  u32 *exit_qual)
-{
-	bool ia32e;
-
-	*exit_qual = ENTRY_FAIL_DEFAULT;
-
-	if (!nested_guest_cr0_valid(vcpu, vmcs12->guest_cr0) ||
-	    !nested_guest_cr4_valid(vcpu, vmcs12->guest_cr4))
-		return 1;
-
-	if (nested_vmx_check_vmcs_link_ptr(vcpu, vmcs12)) {
-		*exit_qual = ENTRY_FAIL_VMCS_LINK_PTR;
-		return 1;
-	}
-
-	/*
-	 * If the load IA32_EFER VM-entry control is 1, the following checks
-	 * are performed on the field for the IA32_EFER MSR:
-	 * - Bits reserved in the IA32_EFER MSR must be 0.
-	 * - Bit 10 (corresponding to IA32_EFER.LMA) must equal the value of
-	 *   the IA-32e mode guest VM-exit control. It must also be identical
-	 *   to bit 8 (LME) if bit 31 in the CR0 field (corresponding to
-	 *   CR0.PG) is 1.
-	 */
-	if (to_vmx(vcpu)->nested.nested_run_pending &&
-	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER)) {
-		ia32e = (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE) != 0;
-		if (!kvm_valid_efer(vcpu, vmcs12->guest_ia32_efer) ||
-		    ia32e != !!(vmcs12->guest_ia32_efer & EFER_LMA) ||
-		    ((vmcs12->guest_cr0 & X86_CR0_PG) &&
-		     ia32e != !!(vmcs12->guest_ia32_efer & EFER_LME)))
-			return 1;
-	}
-
-	if ((vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS) &&
-		(is_noncanonical_address(vmcs12->guest_bndcfgs & PAGE_MASK, vcpu) ||
-		(vmcs12->guest_bndcfgs & MSR_IA32_BNDCFGS_RSVD)))
-			return 1;
-
-	return 0;
-}
-
-static int __noclone nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long cr3, cr4;
-
-	if (!nested_early_check)
-		return 0;
-
-	if (vmx->msr_autoload.host.nr)
-		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
-	if (vmx->msr_autoload.guest.nr)
-		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
-
-	preempt_disable();
-
-	vmx_prepare_switch_to_guest(vcpu);
-
-	/*
-	 * Induce a consistency check VMExit by clearing bit 1 in GUEST_RFLAGS,
-	 * which is reserved to '1' by hardware.  GUEST_RFLAGS is guaranteed to
-	 * be written (by preparve_vmcs02()) before the "real" VMEnter, i.e.
-	 * there is no need to preserve other bits or save/restore the field.
-	 */
-	vmcs_writel(GUEST_RFLAGS, 0);
-
-	vmcs_writel(HOST_RIP, vmx_early_consistency_check_return);
-
-	cr3 = __get_current_cr3_fast();
-	if (unlikely(cr3 != vmx->loaded_vmcs->host_state.cr3)) {
-		vmcs_writel(HOST_CR3, cr3);
-		vmx->loaded_vmcs->host_state.cr3 = cr3;
-	}
-
-	cr4 = cr4_read_shadow();
-	if (unlikely(cr4 != vmx->loaded_vmcs->host_state.cr4)) {
-		vmcs_writel(HOST_CR4, cr4);
-		vmx->loaded_vmcs->host_state.cr4 = cr4;
-	}
-
-	vmx->__launched = vmx->loaded_vmcs->launched;
-
-	asm(
-		/* Set HOST_RSP */
-		__ex("vmwrite %%" _ASM_SP ", %%" _ASM_DX) "\n\t"
-		"mov %%" _ASM_SP ", %c[host_rsp](%0)\n\t"
-
-		/* Check if vmlaunch of vmresume is needed */
-		"cmpl $0, %c[launched](%0)\n\t"
-		"je 1f\n\t"
-		__ex("vmresume") "\n\t"
-		"jmp 2f\n\t"
-		"1: " __ex("vmlaunch") "\n\t"
-		"jmp 2f\n\t"
-		"2: "
-
-		/* Set vmx->fail accordingly */
-		"setbe %c[fail](%0)\n\t"
-
-		".pushsection .rodata\n\t"
-		".global vmx_early_consistency_check_return\n\t"
-		"vmx_early_consistency_check_return: " _ASM_PTR " 2b\n\t"
-		".popsection"
-	      :
-	      : "c"(vmx), "d"((unsigned long)HOST_RSP),
-		[launched]"i"(offsetof(struct vcpu_vmx, __launched)),
-		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
-		[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp))
-	      : "rax", "cc", "memory"
-	);
-
-	vmcs_writel(HOST_RIP, vmx_return);
-
-	preempt_enable();
-
-	if (vmx->msr_autoload.host.nr)
-		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
-	if (vmx->msr_autoload.guest.nr)
-		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
-
-	if (vmx->fail) {
-		WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
-			     VMXERR_ENTRY_INVALID_CONTROL_FIELD);
-		vmx->fail = 0;
-		return 1;
-	}
-
-	/*
-	 * VMExit clears RFLAGS.IF and DR7, even on a consistency check.
-	 */
-	local_irq_enable();
-	if (hw_breakpoint_active())
-		set_debugreg(__this_cpu_read(cpu_dr7), 7);
-
-	/*
-	 * A non-failing VMEntry means we somehow entered guest mode with
-	 * an illegal RIP, and that's just the tip of the iceberg.  There
-	 * is no telling what memory has been modified or what state has
-	 * been exposed to unknown code.  Hitting this all but guarantees
-	 * a (very critical) hardware issue.
-	 */
-	WARN_ON(!(vmcs_read32(VM_EXIT_REASON) &
-		VMX_EXIT_REASONS_FAILED_VMENTRY));
-
-	return 0;
-}
-STACK_FRAME_NON_STANDARD(nested_vmx_check_vmentry_hw);
-
-static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
-				   struct vmcs12 *vmcs12);
-
-/*
- * If from_vmentry is false, this is being called from state restore (either RSM
- * or KVM_SET_NESTED_STATE).  Otherwise it's called from vmlaunch/vmresume.
-+ *
-+ * Returns:
-+ *   0 - success, i.e. proceed with actual VMEnter
-+ *   1 - consistency check VMExit
-+ *  -1 - consistency check VMFail
- */
-static int nested_vmx_enter_non_root_mode(struct kvm_vcpu *vcpu,
-					  bool from_vmentry)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	bool evaluate_pending_interrupts;
-	u32 exit_reason = EXIT_REASON_INVALID_STATE;
-	u32 exit_qual;
-
-	evaluate_pending_interrupts = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) &
-		(CPU_BASED_VIRTUAL_INTR_PENDING | CPU_BASED_VIRTUAL_NMI_PENDING);
-	if (likely(!evaluate_pending_interrupts) && kvm_vcpu_apicv_active(vcpu))
-		evaluate_pending_interrupts |= vmx_has_apicv_interrupt(vcpu);
-
-	if (!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS))
-		vmx->nested.vmcs01_debugctl = vmcs_read64(GUEST_IA32_DEBUGCTL);
-	if (kvm_mpx_supported() &&
-		!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS))
-		vmx->nested.vmcs01_guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS);
-
-	vmx_switch_vmcs(vcpu, &vmx->nested.vmcs02);
-
-	prepare_vmcs02_early(vmx, vmcs12);
-
-	if (from_vmentry) {
-		nested_get_vmcs12_pages(vcpu);
-
-		if (nested_vmx_check_vmentry_hw(vcpu)) {
-			vmx_switch_vmcs(vcpu, &vmx->vmcs01);
-			return -1;
-		}
-
-		if (check_vmentry_postreqs(vcpu, vmcs12, &exit_qual))
-			goto vmentry_fail_vmexit;
-	}
-
-	enter_guest_mode(vcpu);
-	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
-		vcpu->arch.tsc_offset += vmcs12->tsc_offset;
-
-	if (prepare_vmcs02(vcpu, vmcs12, &exit_qual))
-		goto vmentry_fail_vmexit_guest_mode;
-
-	if (from_vmentry) {
-		exit_reason = EXIT_REASON_MSR_LOAD_FAIL;
-		exit_qual = nested_vmx_load_msr(vcpu,
-						vmcs12->vm_entry_msr_load_addr,
-						vmcs12->vm_entry_msr_load_count);
-		if (exit_qual)
-			goto vmentry_fail_vmexit_guest_mode;
-	} else {
-		/*
-		 * The MMU is not initialized to point at the right entities yet and
-		 * "get pages" would need to read data from the guest (i.e. we will
-		 * need to perform gpa to hpa translation). Request a call
-		 * to nested_get_vmcs12_pages before the next VM-entry.  The MSRs
-		 * have already been set at vmentry time and should not be reset.
-		 */
-		kvm_make_request(KVM_REQ_GET_VMCS12_PAGES, vcpu);
-	}
-
-	/*
-	 * If L1 had a pending IRQ/NMI until it executed
-	 * VMLAUNCH/VMRESUME which wasn't delivered because it was
-	 * disallowed (e.g. interrupts disabled), L0 needs to
-	 * evaluate if this pending event should cause an exit from L2
-	 * to L1 or delivered directly to L2 (e.g. In case L1 don't
-	 * intercept EXTERNAL_INTERRUPT).
-	 *
-	 * Usually this would be handled by the processor noticing an
-	 * IRQ/NMI window request, or checking RVI during evaluation of
-	 * pending virtual interrupts.  However, this setting was done
-	 * on VMCS01 and now VMCS02 is active instead. Thus, we force L0
-	 * to perform pending event evaluation by requesting a KVM_REQ_EVENT.
-	 */
-	if (unlikely(evaluate_pending_interrupts))
-		kvm_make_request(KVM_REQ_EVENT, vcpu);
-
-	/*
-	 * Note no nested_vmx_succeed or nested_vmx_fail here. At this point
-	 * we are no longer running L1, and VMLAUNCH/VMRESUME has not yet
-	 * returned as far as L1 is concerned. It will only return (and set
-	 * the success flag) when L2 exits (see nested_vmx_vmexit()).
-	 */
-	return 0;
-
-	/*
-	 * A failed consistency check that leads to a VMExit during L1's
-	 * VMEnter to L2 is a variation of a normal VMexit, as explained in
-	 * 26.7 "VM-entry failures during or after loading guest state".
-	 */
-vmentry_fail_vmexit_guest_mode:
-	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
-		vcpu->arch.tsc_offset -= vmcs12->tsc_offset;
-	leave_guest_mode(vcpu);
-
-vmentry_fail_vmexit:
-	vmx_switch_vmcs(vcpu, &vmx->vmcs01);
-
-	if (!from_vmentry)
-		return 1;
-
-	load_vmcs12_host_state(vcpu, vmcs12);
-	vmcs12->vm_exit_reason = exit_reason | VMX_EXIT_REASONS_FAILED_VMENTRY;
-	vmcs12->exit_qualification = exit_qual;
-	if (enable_shadow_vmcs || vmx->nested.hv_evmcs)
-		vmx->nested.need_vmcs12_sync = true;
-	return 1;
-}
-
-/*
- * nested_vmx_run() handles a nested entry, i.e., a VMLAUNCH or VMRESUME on L1
- * for running an L2 nested guest.
- */
-static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
-{
-	struct vmcs12 *vmcs12;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	u32 interrupt_shadow = vmx_get_interrupt_shadow(vcpu);
-	int ret;
-
-	if (!nested_vmx_check_permission(vcpu))
-		return 1;
-
-	if (!nested_vmx_handle_enlightened_vmptrld(vcpu, true))
-		return 1;
-
-	if (!vmx->nested.hv_evmcs && vmx->nested.current_vmptr == -1ull)
-		return nested_vmx_failInvalid(vcpu);
-
-	vmcs12 = get_vmcs12(vcpu);
-
-	/*
-	 * Can't VMLAUNCH or VMRESUME a shadow VMCS. Despite the fact
-	 * that there *is* a valid VMCS pointer, RFLAGS.CF is set
-	 * rather than RFLAGS.ZF, and no error number is stored to the
-	 * VM-instruction error field.
-	 */
-	if (vmcs12->hdr.shadow_vmcs)
-		return nested_vmx_failInvalid(vcpu);
-
-	if (vmx->nested.hv_evmcs) {
-		copy_enlightened_to_vmcs12(vmx);
-		/* Enlightened VMCS doesn't have launch state */
-		vmcs12->launch_state = !launch;
-	} else if (enable_shadow_vmcs) {
-		copy_shadow_to_vmcs12(vmx);
-	}
-
-	/*
-	 * The nested entry process starts with enforcing various prerequisites
-	 * on vmcs12 as required by the Intel SDM, and act appropriately when
-	 * they fail: As the SDM explains, some conditions should cause the
-	 * instruction to fail, while others will cause the instruction to seem
-	 * to succeed, but return an EXIT_REASON_INVALID_STATE.
-	 * To speed up the normal (success) code path, we should avoid checking
-	 * for misconfigurations which will anyway be caught by the processor
-	 * when using the merged vmcs02.
-	 */
-	if (interrupt_shadow & KVM_X86_SHADOW_INT_MOV_SS)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_ENTRY_EVENTS_BLOCKED_BY_MOV_SS);
-
-	if (vmcs12->launch_state == launch)
-		return nested_vmx_failValid(vcpu,
-			launch ? VMXERR_VMLAUNCH_NONCLEAR_VMCS
-			       : VMXERR_VMRESUME_NONLAUNCHED_VMCS);
-
-	ret = check_vmentry_prereqs(vcpu, vmcs12);
-	if (ret)
-		return nested_vmx_failValid(vcpu, ret);
-
-	/*
-	 * We're finally done with prerequisite checking, and can start with
-	 * the nested entry.
-	 */
-	vmx->nested.nested_run_pending = 1;
-	ret = nested_vmx_enter_non_root_mode(vcpu, true);
-	vmx->nested.nested_run_pending = !ret;
-	if (ret > 0)
-		return 1;
-	else if (ret)
-		return nested_vmx_failValid(vcpu,
-			VMXERR_ENTRY_INVALID_CONTROL_FIELD);
-
-	/* Hide L1D cache contents from the nested guest.  */
-	vmx->vcpu.arch.l1tf_flush_l1d = true;
-
-	/*
-	 * Must happen outside of nested_vmx_enter_non_root_mode() as it will
-	 * also be used as part of restoring nVMX state for
-	 * snapshot restore (migration).
-	 *
-	 * In this flow, it is assumed that vmcs12 cache was
-	 * trasferred as part of captured nVMX state and should
-	 * therefore not be read from guest memory (which may not
-	 * exist on destination host yet).
-	 */
-	nested_cache_shadow_vmcs12(vcpu, vmcs12);
-
-	/*
-	 * If we're entering a halted L2 vcpu and the L2 vcpu won't be woken
-	 * by event injection, halt vcpu.
-	 */
-	if ((vmcs12->guest_activity_state == GUEST_ACTIVITY_HLT) &&
-	    !(vmcs12->vm_entry_intr_info_field & INTR_INFO_VALID_MASK)) {
-		vmx->nested.nested_run_pending = 0;
-		return kvm_vcpu_halt(vcpu);
-	}
-	return 1;
-}
-
-/*
- * On a nested exit from L2 to L1, vmcs12.guest_cr0 might not be up-to-date
- * because L2 may have changed some cr0 bits directly (CRO_GUEST_HOST_MASK).
- * This function returns the new value we should put in vmcs12.guest_cr0.
- * It's not enough to just return the vmcs02 GUEST_CR0. Rather,
- *  1. Bits that neither L0 nor L1 trapped, were set directly by L2 and are now
- *     available in vmcs02 GUEST_CR0. (Note: It's enough to check that L0
- *     didn't trap the bit, because if L1 did, so would L0).
- *  2. Bits that L1 asked to trap (and therefore L0 also did) could not have
- *     been modified by L2, and L1 knows it. So just leave the old value of
- *     the bit from vmcs12.guest_cr0. Note that the bit from vmcs02 GUEST_CR0
- *     isn't relevant, because if L0 traps this bit it can set it to anything.
- *  3. Bits that L1 didn't trap, but L0 did. L1 believes the guest could have
- *     changed these bits, and therefore they need to be updated, but L0
- *     didn't necessarily allow them to be changed in GUEST_CR0 - and rather
- *     put them in vmcs02 CR0_READ_SHADOW. So take these bits from there.
- */
-static inline unsigned long
-vmcs12_guest_cr0(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
-{
-	return
-	/*1*/	(vmcs_readl(GUEST_CR0) & vcpu->arch.cr0_guest_owned_bits) |
-	/*2*/	(vmcs12->guest_cr0 & vmcs12->cr0_guest_host_mask) |
-	/*3*/	(vmcs_readl(CR0_READ_SHADOW) & ~(vmcs12->cr0_guest_host_mask |
-			vcpu->arch.cr0_guest_owned_bits));
-}
-
-static inline unsigned long
-vmcs12_guest_cr4(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
-{
-	return
-	/*1*/	(vmcs_readl(GUEST_CR4) & vcpu->arch.cr4_guest_owned_bits) |
-	/*2*/	(vmcs12->guest_cr4 & vmcs12->cr4_guest_host_mask) |
-	/*3*/	(vmcs_readl(CR4_READ_SHADOW) & ~(vmcs12->cr4_guest_host_mask |
-			vcpu->arch.cr4_guest_owned_bits));
-}
-
-static void vmcs12_save_pending_event(struct kvm_vcpu *vcpu,
-				       struct vmcs12 *vmcs12)
-{
-	u32 idt_vectoring;
-	unsigned int nr;
-
-	if (vcpu->arch.exception.injected) {
-		nr = vcpu->arch.exception.nr;
-		idt_vectoring = nr | VECTORING_INFO_VALID_MASK;
-
-		if (kvm_exception_is_soft(nr)) {
-			vmcs12->vm_exit_instruction_len =
-				vcpu->arch.event_exit_inst_len;
-			idt_vectoring |= INTR_TYPE_SOFT_EXCEPTION;
-		} else
-			idt_vectoring |= INTR_TYPE_HARD_EXCEPTION;
-
-		if (vcpu->arch.exception.has_error_code) {
-			idt_vectoring |= VECTORING_INFO_DELIVER_CODE_MASK;
-			vmcs12->idt_vectoring_error_code =
-				vcpu->arch.exception.error_code;
-		}
-
-		vmcs12->idt_vectoring_info_field = idt_vectoring;
-	} else if (vcpu->arch.nmi_injected) {
-		vmcs12->idt_vectoring_info_field =
-			INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR;
-	} else if (vcpu->arch.interrupt.injected) {
-		nr = vcpu->arch.interrupt.nr;
-		idt_vectoring = nr | VECTORING_INFO_VALID_MASK;
-
-		if (vcpu->arch.interrupt.soft) {
-			idt_vectoring |= INTR_TYPE_SOFT_INTR;
-			vmcs12->vm_entry_instruction_len =
-				vcpu->arch.event_exit_inst_len;
-		} else
-			idt_vectoring |= INTR_TYPE_EXT_INTR;
-
-		vmcs12->idt_vectoring_info_field = idt_vectoring;
-	}
-}
-
-static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	unsigned long exit_qual;
-	bool block_nested_events =
-	    vmx->nested.nested_run_pending || kvm_event_needs_reinjection(vcpu);
-
-	if (vcpu->arch.exception.pending &&
-		nested_vmx_check_exception(vcpu, &exit_qual)) {
-		if (block_nested_events)
-			return -EBUSY;
-		nested_vmx_inject_exception_vmexit(vcpu, exit_qual);
-		return 0;
-	}
-
-	if (nested_cpu_has_preemption_timer(get_vmcs12(vcpu)) &&
-	    vmx->nested.preemption_timer_expired) {
-		if (block_nested_events)
-			return -EBUSY;
-		nested_vmx_vmexit(vcpu, EXIT_REASON_PREEMPTION_TIMER, 0, 0);
-		return 0;
-	}
-
-	if (vcpu->arch.nmi_pending && nested_exit_on_nmi(vcpu)) {
-		if (block_nested_events)
-			return -EBUSY;
-		nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
-				  NMI_VECTOR | INTR_TYPE_NMI_INTR |
-				  INTR_INFO_VALID_MASK, 0);
-		/*
-		 * The NMI-triggered VM exit counts as injection:
-		 * clear this one and block further NMIs.
-		 */
-		vcpu->arch.nmi_pending = 0;
-		vmx_set_nmi_mask(vcpu, true);
-		return 0;
-	}
-
-	if ((kvm_cpu_has_interrupt(vcpu) || external_intr) &&
-	    nested_exit_on_intr(vcpu)) {
-		if (block_nested_events)
-			return -EBUSY;
-		nested_vmx_vmexit(vcpu, EXIT_REASON_EXTERNAL_INTERRUPT, 0, 0);
-		return 0;
-	}
-
-	vmx_complete_nested_posted_interrupt(vcpu);
-	return 0;
-}
-
-static void vmx_request_immediate_exit(struct kvm_vcpu *vcpu)
-{
-	to_vmx(vcpu)->req_immediate_exit = true;
-}
-
-static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
-{
-	ktime_t remaining =
-		hrtimer_get_remaining(&to_vmx(vcpu)->nested.preemption_timer);
-	u64 value;
-
-	if (ktime_to_ns(remaining) <= 0)
-		return 0;
-
-	value = ktime_to_ns(remaining) * vcpu->arch.virtual_tsc_khz;
-	do_div(value, 1000000);
-	return value >> VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE;
-}
-
-/*
- * Update the guest state fields of vmcs12 to reflect changes that
- * occurred while L2 was running. (The "IA-32e mode guest" bit of the
- * VM-entry controls is also updated, since this is really a guest
- * state bit.)
- */
-static void sync_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
-{
-	vmcs12->guest_cr0 = vmcs12_guest_cr0(vcpu, vmcs12);
-	vmcs12->guest_cr4 = vmcs12_guest_cr4(vcpu, vmcs12);
-
-	vmcs12->guest_rsp = kvm_register_read(vcpu, VCPU_REGS_RSP);
-	vmcs12->guest_rip = kvm_register_read(vcpu, VCPU_REGS_RIP);
-	vmcs12->guest_rflags = vmcs_readl(GUEST_RFLAGS);
-
-	vmcs12->guest_es_selector = vmcs_read16(GUEST_ES_SELECTOR);
-	vmcs12->guest_cs_selector = vmcs_read16(GUEST_CS_SELECTOR);
-	vmcs12->guest_ss_selector = vmcs_read16(GUEST_SS_SELECTOR);
-	vmcs12->guest_ds_selector = vmcs_read16(GUEST_DS_SELECTOR);
-	vmcs12->guest_fs_selector = vmcs_read16(GUEST_FS_SELECTOR);
-	vmcs12->guest_gs_selector = vmcs_read16(GUEST_GS_SELECTOR);
-	vmcs12->guest_ldtr_selector = vmcs_read16(GUEST_LDTR_SELECTOR);
-	vmcs12->guest_tr_selector = vmcs_read16(GUEST_TR_SELECTOR);
-	vmcs12->guest_es_limit = vmcs_read32(GUEST_ES_LIMIT);
-	vmcs12->guest_cs_limit = vmcs_read32(GUEST_CS_LIMIT);
-	vmcs12->guest_ss_limit = vmcs_read32(GUEST_SS_LIMIT);
-	vmcs12->guest_ds_limit = vmcs_read32(GUEST_DS_LIMIT);
-	vmcs12->guest_fs_limit = vmcs_read32(GUEST_FS_LIMIT);
-	vmcs12->guest_gs_limit = vmcs_read32(GUEST_GS_LIMIT);
-	vmcs12->guest_ldtr_limit = vmcs_read32(GUEST_LDTR_LIMIT);
-	vmcs12->guest_tr_limit = vmcs_read32(GUEST_TR_LIMIT);
-	vmcs12->guest_gdtr_limit = vmcs_read32(GUEST_GDTR_LIMIT);
-	vmcs12->guest_idtr_limit = vmcs_read32(GUEST_IDTR_LIMIT);
-	vmcs12->guest_es_ar_bytes = vmcs_read32(GUEST_ES_AR_BYTES);
-	vmcs12->guest_cs_ar_bytes = vmcs_read32(GUEST_CS_AR_BYTES);
-	vmcs12->guest_ss_ar_bytes = vmcs_read32(GUEST_SS_AR_BYTES);
-	vmcs12->guest_ds_ar_bytes = vmcs_read32(GUEST_DS_AR_BYTES);
-	vmcs12->guest_fs_ar_bytes = vmcs_read32(GUEST_FS_AR_BYTES);
-	vmcs12->guest_gs_ar_bytes = vmcs_read32(GUEST_GS_AR_BYTES);
-	vmcs12->guest_ldtr_ar_bytes = vmcs_read32(GUEST_LDTR_AR_BYTES);
-	vmcs12->guest_tr_ar_bytes = vmcs_read32(GUEST_TR_AR_BYTES);
-	vmcs12->guest_es_base = vmcs_readl(GUEST_ES_BASE);
-	vmcs12->guest_cs_base = vmcs_readl(GUEST_CS_BASE);
-	vmcs12->guest_ss_base = vmcs_readl(GUEST_SS_BASE);
-	vmcs12->guest_ds_base = vmcs_readl(GUEST_DS_BASE);
-	vmcs12->guest_fs_base = vmcs_readl(GUEST_FS_BASE);
-	vmcs12->guest_gs_base = vmcs_readl(GUEST_GS_BASE);
-	vmcs12->guest_ldtr_base = vmcs_readl(GUEST_LDTR_BASE);
-	vmcs12->guest_tr_base = vmcs_readl(GUEST_TR_BASE);
-	vmcs12->guest_gdtr_base = vmcs_readl(GUEST_GDTR_BASE);
-	vmcs12->guest_idtr_base = vmcs_readl(GUEST_IDTR_BASE);
-
-	vmcs12->guest_interruptibility_info =
-		vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
-	vmcs12->guest_pending_dbg_exceptions =
-		vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS);
-	if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
-		vmcs12->guest_activity_state = GUEST_ACTIVITY_HLT;
-	else
-		vmcs12->guest_activity_state = GUEST_ACTIVITY_ACTIVE;
-
-	if (nested_cpu_has_preemption_timer(vmcs12)) {
-		if (vmcs12->vm_exit_controls &
-		    VM_EXIT_SAVE_VMX_PREEMPTION_TIMER)
-			vmcs12->vmx_preemption_timer_value =
-				vmx_get_preemption_timer_value(vcpu);
-		hrtimer_cancel(&to_vmx(vcpu)->nested.preemption_timer);
-	}
-
-	/*
-	 * In some cases (usually, nested EPT), L2 is allowed to change its
-	 * own CR3 without exiting. If it has changed it, we must keep it.
-	 * Of course, if L0 is using shadow page tables, GUEST_CR3 was defined
-	 * by L0, not L1 or L2, so we mustn't unconditionally copy it to vmcs12.
-	 *
-	 * Additionally, restore L2's PDPTR to vmcs12.
-	 */
-	if (enable_ept) {
-		vmcs12->guest_cr3 = vmcs_readl(GUEST_CR3);
-		vmcs12->guest_pdptr0 = vmcs_read64(GUEST_PDPTR0);
-		vmcs12->guest_pdptr1 = vmcs_read64(GUEST_PDPTR1);
-		vmcs12->guest_pdptr2 = vmcs_read64(GUEST_PDPTR2);
-		vmcs12->guest_pdptr3 = vmcs_read64(GUEST_PDPTR3);
-	}
-
-	vmcs12->guest_linear_address = vmcs_readl(GUEST_LINEAR_ADDRESS);
-
-	if (nested_cpu_has_vid(vmcs12))
-		vmcs12->guest_intr_status = vmcs_read16(GUEST_INTR_STATUS);
-
-	vmcs12->vm_entry_controls =
-		(vmcs12->vm_entry_controls & ~VM_ENTRY_IA32E_MODE) |
-		(vm_entry_controls_get(to_vmx(vcpu)) & VM_ENTRY_IA32E_MODE);
-
-	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_DEBUG_CONTROLS) {
-		kvm_get_dr(vcpu, 7, (unsigned long *)&vmcs12->guest_dr7);
-		vmcs12->guest_ia32_debugctl = vmcs_read64(GUEST_IA32_DEBUGCTL);
-	}
-
-	/* TODO: These cannot have changed unless we have MSR bitmaps and
-	 * the relevant bit asks not to trap the change */
-	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_IA32_PAT)
-		vmcs12->guest_ia32_pat = vmcs_read64(GUEST_IA32_PAT);
-	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_IA32_EFER)
-		vmcs12->guest_ia32_efer = vcpu->arch.efer;
-	vmcs12->guest_sysenter_cs = vmcs_read32(GUEST_SYSENTER_CS);
-	vmcs12->guest_sysenter_esp = vmcs_readl(GUEST_SYSENTER_ESP);
-	vmcs12->guest_sysenter_eip = vmcs_readl(GUEST_SYSENTER_EIP);
-	if (kvm_mpx_supported())
-		vmcs12->guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS);
-}
-
-/*
- * prepare_vmcs12 is part of what we need to do when the nested L2 guest exits
- * and we want to prepare to run its L1 parent. L1 keeps a vmcs for L2 (vmcs12),
- * and this function updates it to reflect the changes to the guest state while
- * L2 was running (and perhaps made some exits which were handled directly by L0
- * without going back to L1), and to reflect the exit reason.
- * Note that we do not have to copy here all VMCS fields, just those that
- * could have changed by the L2 guest or the exit - i.e., the guest-state and
- * exit-information fields only. Other fields are modified by L1 with VMWRITE,
- * which already writes to vmcs12 directly.
- */
-static void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
-			   u32 exit_reason, u32 exit_intr_info,
-			   unsigned long exit_qualification)
-{
-	/* update guest state fields: */
-	sync_vmcs12(vcpu, vmcs12);
-
-	/* update exit information fields: */
-
-	vmcs12->vm_exit_reason = exit_reason;
-	vmcs12->exit_qualification = exit_qualification;
-	vmcs12->vm_exit_intr_info = exit_intr_info;
-
-	vmcs12->idt_vectoring_info_field = 0;
-	vmcs12->vm_exit_instruction_len = vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
-	vmcs12->vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
-
-	if (!(vmcs12->vm_exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY)) {
-		vmcs12->launch_state = 1;
-
-		/* vm_entry_intr_info_field is cleared on exit. Emulate this
-		 * instead of reading the real value. */
-		vmcs12->vm_entry_intr_info_field &= ~INTR_INFO_VALID_MASK;
-
-		/*
-		 * Transfer the event that L0 or L1 may wanted to inject into
-		 * L2 to IDT_VECTORING_INFO_FIELD.
-		 */
-		vmcs12_save_pending_event(vcpu, vmcs12);
-	}
-
-	/*
-	 * Drop what we picked up for L2 via vmx_complete_interrupts. It is
-	 * preserved above and would only end up incorrectly in L1.
-	 */
-	vcpu->arch.nmi_injected = false;
-	kvm_clear_exception_queue(vcpu);
-	kvm_clear_interrupt_queue(vcpu);
-}
-
-/*
- * A part of what we need to when the nested L2 guest exits and we want to
- * run its L1 parent, is to reset L1's guest state to the host state specified
- * in vmcs12.
- * This function is to be called not only on normal nested exit, but also on
- * a nested entry failure, as explained in Intel's spec, 3B.23.7 ("VM-Entry
- * Failures During or After Loading Guest State").
- * This function should be called when the active VMCS is L1's (vmcs01).
- */
-static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
-				   struct vmcs12 *vmcs12)
-{
-	struct kvm_segment seg;
-	u32 entry_failure_code;
-
-	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_EFER)
-		vcpu->arch.efer = vmcs12->host_ia32_efer;
-	else if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
-		vcpu->arch.efer |= (EFER_LMA | EFER_LME);
-	else
-		vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
-	vmx_set_efer(vcpu, vcpu->arch.efer);
-
-	kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->host_rsp);
-	kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->host_rip);
-	vmx_set_rflags(vcpu, X86_EFLAGS_FIXED);
-	vmx_set_interrupt_shadow(vcpu, 0);
-
-	/*
-	 * Note that calling vmx_set_cr0 is important, even if cr0 hasn't
-	 * actually changed, because vmx_set_cr0 refers to efer set above.
-	 *
-	 * CR0_GUEST_HOST_MASK is already set in the original vmcs01
-	 * (KVM doesn't change it);
-	 */
-	vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS;
-	vmx_set_cr0(vcpu, vmcs12->host_cr0);
-
-	/* Same as above - no reason to call set_cr4_guest_host_mask().  */
-	vcpu->arch.cr4_guest_owned_bits = ~vmcs_readl(CR4_GUEST_HOST_MASK);
-	vmx_set_cr4(vcpu, vmcs12->host_cr4);
-
-	nested_ept_uninit_mmu_context(vcpu);
-
-	/*
-	 * Only PDPTE load can fail as the value of cr3 was checked on entry and
-	 * couldn't have changed.
-	 */
-	if (nested_vmx_load_cr3(vcpu, vmcs12->host_cr3, false, &entry_failure_code))
-		nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_PDPTE_FAIL);
-
-	if (!enable_ept)
-		vcpu->arch.walk_mmu->inject_page_fault = kvm_inject_page_fault;
-
-	/*
-	 * If vmcs01 doesn't use VPID, CPU flushes TLB on every
-	 * VMEntry/VMExit. Thus, no need to flush TLB.
-	 *
-	 * If vmcs12 doesn't use VPID, L1 expects TLB to be
-	 * flushed on every VMEntry/VMExit.
-	 *
-	 * Otherwise, we can preserve TLB entries as long as we are
-	 * able to tag L1 TLB entries differently than L2 TLB entries.
-	 *
-	 * If vmcs12 uses EPT, we need to execute this flush on EPTP01
-	 * and therefore we request the TLB flush to happen only after VMCS EPTP
-	 * has been set by KVM_REQ_LOAD_CR3.
-	 */
-	if (enable_vpid &&
-	    (!nested_cpu_has_vpid(vmcs12) || !nested_has_guest_tlb_tag(vcpu))) {
-		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
-	}
-
-	vmcs_write32(GUEST_SYSENTER_CS, vmcs12->host_ia32_sysenter_cs);
-	vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->host_ia32_sysenter_esp);
-	vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip);
-	vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base);
-	vmcs_writel(GUEST_GDTR_BASE, vmcs12->host_gdtr_base);
-	vmcs_write32(GUEST_IDTR_LIMIT, 0xFFFF);
-	vmcs_write32(GUEST_GDTR_LIMIT, 0xFFFF);
-
-	/* If not VM_EXIT_CLEAR_BNDCFGS, the L2 value propagates to L1.  */
-	if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS)
-		vmcs_write64(GUEST_BNDCFGS, 0);
-
-	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_PAT) {
-		vmcs_write64(GUEST_IA32_PAT, vmcs12->host_ia32_pat);
-		vcpu->arch.pat = vmcs12->host_ia32_pat;
-	}
-	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
-		vmcs_write64(GUEST_IA32_PERF_GLOBAL_CTRL,
-			vmcs12->host_ia32_perf_global_ctrl);
-
-	/* Set L1 segment info according to Intel SDM
-	    27.5.2 Loading Host Segment and Descriptor-Table Registers */
-	seg = (struct kvm_segment) {
-		.base = 0,
-		.limit = 0xFFFFFFFF,
-		.selector = vmcs12->host_cs_selector,
-		.type = 11,
-		.present = 1,
-		.s = 1,
-		.g = 1
-	};
-	if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
-		seg.l = 1;
-	else
-		seg.db = 1;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_CS);
-	seg = (struct kvm_segment) {
-		.base = 0,
-		.limit = 0xFFFFFFFF,
-		.type = 3,
-		.present = 1,
-		.s = 1,
-		.db = 1,
-		.g = 1
-	};
-	seg.selector = vmcs12->host_ds_selector;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_DS);
-	seg.selector = vmcs12->host_es_selector;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_ES);
-	seg.selector = vmcs12->host_ss_selector;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_SS);
-	seg.selector = vmcs12->host_fs_selector;
-	seg.base = vmcs12->host_fs_base;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_FS);
-	seg.selector = vmcs12->host_gs_selector;
-	seg.base = vmcs12->host_gs_base;
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_GS);
-	seg = (struct kvm_segment) {
-		.base = vmcs12->host_tr_base,
-		.limit = 0x67,
-		.selector = vmcs12->host_tr_selector,
-		.type = 11,
-		.present = 1
-	};
-	vmx_set_segment(vcpu, &seg, VCPU_SREG_TR);
-
-	kvm_set_dr(vcpu, 7, 0x400);
-	vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
-
-	if (cpu_has_vmx_msr_bitmap())
-		vmx_update_msr_bitmap(vcpu);
-
-	if (nested_vmx_load_msr(vcpu, vmcs12->vm_exit_msr_load_addr,
-				vmcs12->vm_exit_msr_load_count))
-		nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_MSR_FAIL);
-}
-
-static inline u64 nested_vmx_get_vmcs01_guest_efer(struct vcpu_vmx *vmx)
-{
-	struct shared_msr_entry *efer_msr;
-	unsigned int i;
-
-	if (vm_entry_controls_get(vmx) & VM_ENTRY_LOAD_IA32_EFER)
-		return vmcs_read64(GUEST_IA32_EFER);
-
-	if (cpu_has_load_ia32_efer)
-		return host_efer;
-
-	for (i = 0; i < vmx->msr_autoload.guest.nr; ++i) {
-		if (vmx->msr_autoload.guest.val[i].index == MSR_EFER)
-			return vmx->msr_autoload.guest.val[i].value;
-	}
-
-	efer_msr = find_msr_entry(vmx, MSR_EFER);
-	if (efer_msr)
-		return efer_msr->data;
-
-	return host_efer;
-}
-
-static void nested_vmx_restore_host_state(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmx_msr_entry g, h;
-	struct msr_data msr;
-	gpa_t gpa;
-	u32 i, j;
-
-	vcpu->arch.pat = vmcs_read64(GUEST_IA32_PAT);
-
-	if (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS) {
-		/*
-		 * L1's host DR7 is lost if KVM_GUESTDBG_USE_HW_BP is set
-		 * as vmcs01.GUEST_DR7 contains a userspace defined value
-		 * and vcpu->arch.dr7 is not squirreled away before the
-		 * nested VMENTER (not worth adding a variable in nested_vmx).
-		 */
-		if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
-			kvm_set_dr(vcpu, 7, DR7_FIXED_1);
-		else
-			WARN_ON(kvm_set_dr(vcpu, 7, vmcs_readl(GUEST_DR7)));
-	}
-
-	/*
-	 * Note that calling vmx_set_{efer,cr0,cr4} is important as they
-	 * handle a variety of side effects to KVM's software model.
-	 */
-	vmx_set_efer(vcpu, nested_vmx_get_vmcs01_guest_efer(vmx));
-
-	vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS;
-	vmx_set_cr0(vcpu, vmcs_readl(CR0_READ_SHADOW));
-
-	vcpu->arch.cr4_guest_owned_bits = ~vmcs_readl(CR4_GUEST_HOST_MASK);
-	vmx_set_cr4(vcpu, vmcs_readl(CR4_READ_SHADOW));
-
-	nested_ept_uninit_mmu_context(vcpu);
-	vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
-	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
-
-	/*
-	 * Use ept_save_pdptrs(vcpu) to load the MMU's cached PDPTRs
-	 * from vmcs01 (if necessary).  The PDPTRs are not loaded on
-	 * VMFail, like everything else we just need to ensure our
-	 * software model is up-to-date.
-	 */
-	ept_save_pdptrs(vcpu);
-
-	kvm_mmu_reset_context(vcpu);
-
-	if (cpu_has_vmx_msr_bitmap())
-		vmx_update_msr_bitmap(vcpu);
-
-	/*
-	 * This nasty bit of open coding is a compromise between blindly
-	 * loading L1's MSRs using the exit load lists (incorrect emulation
-	 * of VMFail), leaving the nested VM's MSRs in the software model
-	 * (incorrect behavior) and snapshotting the modified MSRs (too
-	 * expensive since the lists are unbound by hardware).  For each
-	 * MSR that was (prematurely) loaded from the nested VMEntry load
-	 * list, reload it from the exit load list if it exists and differs
-	 * from the guest value.  The intent is to stuff host state as
-	 * silently as possible, not to fully process the exit load list.
-	 */
-	msr.host_initiated = false;
-	for (i = 0; i < vmcs12->vm_entry_msr_load_count; i++) {
-		gpa = vmcs12->vm_entry_msr_load_addr + (i * sizeof(g));
-		if (kvm_vcpu_read_guest(vcpu, gpa, &g, sizeof(g))) {
-			pr_debug_ratelimited(
-				"%s read MSR index failed (%u, 0x%08llx)\n",
-				__func__, i, gpa);
-			goto vmabort;
-		}
-
-		for (j = 0; j < vmcs12->vm_exit_msr_load_count; j++) {
-			gpa = vmcs12->vm_exit_msr_load_addr + (j * sizeof(h));
-			if (kvm_vcpu_read_guest(vcpu, gpa, &h, sizeof(h))) {
-				pr_debug_ratelimited(
-					"%s read MSR failed (%u, 0x%08llx)\n",
-					__func__, j, gpa);
-				goto vmabort;
-			}
-			if (h.index != g.index)
-				continue;
-			if (h.value == g.value)
-				break;
-
-			if (nested_vmx_load_msr_check(vcpu, &h)) {
-				pr_debug_ratelimited(
-					"%s check failed (%u, 0x%x, 0x%x)\n",
-					__func__, j, h.index, h.reserved);
-				goto vmabort;
-			}
-
-			msr.index = h.index;
-			msr.data = h.value;
-			if (kvm_set_msr(vcpu, &msr)) {
-				pr_debug_ratelimited(
-					"%s WRMSR failed (%u, 0x%x, 0x%llx)\n",
-					__func__, j, h.index, h.value);
-				goto vmabort;
-			}
-		}
-	}
-
-	return;
-
-vmabort:
-	nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_MSR_FAIL);
-}
-
-/*
- * Emulate an exit from nested guest (L2) to L1, i.e., prepare to run L1
- * and modify vmcs12 to make it see what it would expect to see there if
- * L2 was its real guest. Must only be called when in L2 (is_guest_mode())
- */
-static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
-			      u32 exit_intr_info,
-			      unsigned long exit_qualification)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-
-	/* trying to cancel vmlaunch/vmresume is a bug */
-	WARN_ON_ONCE(vmx->nested.nested_run_pending);
-
-	leave_guest_mode(vcpu);
-
-	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
-		vcpu->arch.tsc_offset -= vmcs12->tsc_offset;
-
-	if (likely(!vmx->fail)) {
-		if (exit_reason == -1)
-			sync_vmcs12(vcpu, vmcs12);
-		else
-			prepare_vmcs12(vcpu, vmcs12, exit_reason, exit_intr_info,
-				       exit_qualification);
-
-		/*
-		 * Must happen outside of sync_vmcs12() as it will
-		 * also be used to capture vmcs12 cache as part of
-		 * capturing nVMX state for snapshot (migration).
-		 *
-		 * Otherwise, this flush will dirty guest memory at a
-		 * point it is already assumed by user-space to be
-		 * immutable.
-		 */
-		nested_flush_cached_shadow_vmcs12(vcpu, vmcs12);
-
-		if (nested_vmx_store_msr(vcpu, vmcs12->vm_exit_msr_store_addr,
-					 vmcs12->vm_exit_msr_store_count))
-			nested_vmx_abort(vcpu, VMX_ABORT_SAVE_GUEST_MSR_FAIL);
-	} else {
-		/*
-		 * The only expected VM-instruction error is "VM entry with
-		 * invalid control field(s)." Anything else indicates a
-		 * problem with L0.  And we should never get here with a
-		 * VMFail of any type if early consistency checks are enabled.
-		 */
-		WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
-			     VMXERR_ENTRY_INVALID_CONTROL_FIELD);
-		WARN_ON_ONCE(nested_early_check);
-	}
-
-	vmx_switch_vmcs(vcpu, &vmx->vmcs01);
-
-	/* Update any VMCS fields that might have changed while L2 ran */
-	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
-	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
-	vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
-
-	if (kvm_has_tsc_control)
-		decache_tsc_multiplier(vmx);
-
-	if (vmx->nested.change_vmcs01_virtual_apic_mode) {
-		vmx->nested.change_vmcs01_virtual_apic_mode = false;
-		vmx_set_virtual_apic_mode(vcpu);
-	} else if (!nested_cpu_has_ept(vmcs12) &&
-		   nested_cpu_has2(vmcs12,
-				   SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) {
-		vmx_flush_tlb(vcpu, true);
-	}
-
-	/* This is needed for same reason as it was needed in prepare_vmcs02 */
-	vmx->host_rsp = 0;
-
-	/* Unpin physical memory we referred to in vmcs02 */
-	if (vmx->nested.apic_access_page) {
-		kvm_release_page_dirty(vmx->nested.apic_access_page);
-		vmx->nested.apic_access_page = NULL;
-	}
-	if (vmx->nested.virtual_apic_page) {
-		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
-		vmx->nested.virtual_apic_page = NULL;
-	}
-	if (vmx->nested.pi_desc_page) {
-		kunmap(vmx->nested.pi_desc_page);
-		kvm_release_page_dirty(vmx->nested.pi_desc_page);
-		vmx->nested.pi_desc_page = NULL;
-		vmx->nested.pi_desc = NULL;
-	}
-
-	/*
-	 * We are now running in L2, mmu_notifier will force to reload the
-	 * page's hpa for L2 vmcs. Need to reload it for L1 before entering L1.
-	 */
-	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
-
-	if ((exit_reason != -1) && (enable_shadow_vmcs || vmx->nested.hv_evmcs))
-		vmx->nested.need_vmcs12_sync = true;
-
-	/* in case we halted in L2 */
-	vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
-
-	if (likely(!vmx->fail)) {
-		/*
-		 * TODO: SDM says that with acknowledge interrupt on
-		 * exit, bit 31 of the VM-exit interrupt information
-		 * (valid interrupt) is always set to 1 on
-		 * EXIT_REASON_EXTERNAL_INTERRUPT, so we shouldn't
-		 * need kvm_cpu_has_interrupt().  See the commit
-		 * message for details.
-		 */
-		if (nested_exit_intr_ack_set(vcpu) &&
-		    exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT &&
-		    kvm_cpu_has_interrupt(vcpu)) {
-			int irq = kvm_cpu_get_interrupt(vcpu);
-			WARN_ON(irq < 0);
-			vmcs12->vm_exit_intr_info = irq |
-				INTR_INFO_VALID_MASK | INTR_TYPE_EXT_INTR;
-		}
-
-		if (exit_reason != -1)
-			trace_kvm_nested_vmexit_inject(vmcs12->vm_exit_reason,
-						       vmcs12->exit_qualification,
-						       vmcs12->idt_vectoring_info_field,
-						       vmcs12->vm_exit_intr_info,
-						       vmcs12->vm_exit_intr_error_code,
-						       KVM_ISA_VMX);
-
-		load_vmcs12_host_state(vcpu, vmcs12);
-
-		return;
-	}
-
-	/*
-	 * After an early L2 VM-entry failure, we're now back
-	 * in L1 which thinks it just finished a VMLAUNCH or
-	 * VMRESUME instruction, so we need to set the failure
-	 * flag and the VM-instruction error field of the VMCS
-	 * accordingly, and skip the emulated instruction.
-	 */
-	(void)nested_vmx_failValid(vcpu, VMXERR_ENTRY_INVALID_CONTROL_FIELD);
-
-	/*
-	 * Restore L1's host state to KVM's software model.  We're here
-	 * because a consistency check was caught by hardware, which
-	 * means some amount of guest state has been propagated to KVM's
-	 * model and needs to be unwound to the host's state.
-	 */
-	nested_vmx_restore_host_state(vcpu);
-
-	vmx->fail = 0;
-}
-
-/*
- * Forcibly leave nested mode in order to be able to reset the VCPU later on.
- */
-static void vmx_leave_nested(struct kvm_vcpu *vcpu)
-{
-	if (is_guest_mode(vcpu)) {
-		to_vmx(vcpu)->nested.nested_run_pending = 0;
-		nested_vmx_vmexit(vcpu, -1, 0, 0);
-	}
-	free_nested(vcpu);
-}
-
-static int vmx_check_intercept(struct kvm_vcpu *vcpu,
-			       struct x86_instruction_info *info,
-			       enum x86_intercept_stage stage)
-{
-	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
-	struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
-
-	/*
-	 * RDPID causes #UD if disabled through secondary execution controls.
-	 * Because it is marked as EmulateOnUD, we need to intercept it here.
-	 */
-	if (info->intercept == x86_intercept_rdtscp &&
-	    !nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
-		ctxt->exception.vector = UD_VECTOR;
-		ctxt->exception.error_code_valid = false;
-		return X86EMUL_PROPAGATE_FAULT;
-	}
-
-	/* TODO: check more intercepts... */
-	return X86EMUL_CONTINUE;
-}
-
-#ifdef CONFIG_X86_64
-/* (a << shift) / divisor, return 1 if overflow otherwise 0 */
-static inline int u64_shl_div_u64(u64 a, unsigned int shift,
-				  u64 divisor, u64 *result)
-{
-	u64 low = a << shift, high = a >> (64 - shift);
-
-	/* To avoid the overflow on divq */
-	if (high >= divisor)
-		return 1;
-
-	/* Low hold the result, high hold rem which is discarded */
-	asm("divq %2\n\t" : "=a" (low), "=d" (high) :
-	    "rm" (divisor), "0" (low), "1" (high));
-	*result = low;
-
-	return 0;
-}
-
-static int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc)
-{
-	struct vcpu_vmx *vmx;
-	u64 tscl, guest_tscl, delta_tsc, lapic_timer_advance_cycles;
-
-	if (kvm_mwait_in_guest(vcpu->kvm))
-		return -EOPNOTSUPP;
-
-	vmx = to_vmx(vcpu);
-	tscl = rdtsc();
-	guest_tscl = kvm_read_l1_tsc(vcpu, tscl);
-	delta_tsc = max(guest_deadline_tsc, guest_tscl) - guest_tscl;
-	lapic_timer_advance_cycles = nsec_to_cycles(vcpu, lapic_timer_advance_ns);
-
-	if (delta_tsc > lapic_timer_advance_cycles)
-		delta_tsc -= lapic_timer_advance_cycles;
-	else
-		delta_tsc = 0;
-
-	/* Convert to host delta tsc if tsc scaling is enabled */
-	if (vcpu->arch.tsc_scaling_ratio != kvm_default_tsc_scaling_ratio &&
-			u64_shl_div_u64(delta_tsc,
-				kvm_tsc_scaling_ratio_frac_bits,
-				vcpu->arch.tsc_scaling_ratio,
-				&delta_tsc))
-		return -ERANGE;
-
-	/*
-	 * If the delta tsc can't fit in the 32 bit after the multi shift,
-	 * we can't use the preemption timer.
-	 * It's possible that it fits on later vmentries, but checking
-	 * on every vmentry is costly so we just use an hrtimer.
-	 */
-	if (delta_tsc >> (cpu_preemption_timer_multi + 32))
-		return -ERANGE;
-
-	vmx->hv_deadline_tsc = tscl + delta_tsc;
-	return delta_tsc == 0;
-}
-
-static void vmx_cancel_hv_timer(struct kvm_vcpu *vcpu)
-{
-	to_vmx(vcpu)->hv_deadline_tsc = -1;
-}
-#endif
-
-static void vmx_sched_in(struct kvm_vcpu *vcpu, int cpu)
-{
-	if (!kvm_pause_in_guest(vcpu->kvm))
-		shrink_ple_window(vcpu);
-}
-
-static void vmx_slot_enable_log_dirty(struct kvm *kvm,
-				     struct kvm_memory_slot *slot)
-{
-	kvm_mmu_slot_leaf_clear_dirty(kvm, slot);
-	kvm_mmu_slot_largepage_remove_write_access(kvm, slot);
-}
-
-static void vmx_slot_disable_log_dirty(struct kvm *kvm,
-				       struct kvm_memory_slot *slot)
-{
-	kvm_mmu_slot_set_dirty(kvm, slot);
-}
-
-static void vmx_flush_log_dirty(struct kvm *kvm)
-{
-	kvm_flush_pml_buffers(kvm);
-}
-
-static int vmx_write_pml_buffer(struct kvm_vcpu *vcpu)
-{
-	struct vmcs12 *vmcs12;
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	gpa_t gpa;
-	struct page *page = NULL;
-	u64 *pml_address;
-
-	if (is_guest_mode(vcpu)) {
-		WARN_ON_ONCE(vmx->nested.pml_full);
-
-		/*
-		 * Check if PML is enabled for the nested guest.
-		 * Whether eptp bit 6 is set is already checked
-		 * as part of A/D emulation.
-		 */
-		vmcs12 = get_vmcs12(vcpu);
-		if (!nested_cpu_has_pml(vmcs12))
-			return 0;
-
-		if (vmcs12->guest_pml_index >= PML_ENTITY_NUM) {
-			vmx->nested.pml_full = true;
-			return 1;
-		}
-
-		gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS) & ~0xFFFull;
-
-		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->pml_address);
-		if (is_error_page(page))
-			return 0;
-
-		pml_address = kmap(page);
-		pml_address[vmcs12->guest_pml_index--] = gpa;
-		kunmap(page);
-		kvm_release_page_clean(page);
-	}
-
-	return 0;
-}
-
-static void vmx_enable_log_dirty_pt_masked(struct kvm *kvm,
-					   struct kvm_memory_slot *memslot,
-					   gfn_t offset, unsigned long mask)
-{
-	kvm_mmu_clear_dirty_pt_masked(kvm, memslot, offset, mask);
-}
-
-static void __pi_post_block(struct kvm_vcpu *vcpu)
-{
-	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
-	struct pi_desc old, new;
-	unsigned int dest;
-
-	do {
-		old.control = new.control = pi_desc->control;
-		WARN(old.nv != POSTED_INTR_WAKEUP_VECTOR,
-		     "Wakeup handler not enabled while the VCPU is blocked\n");
-
-		dest = cpu_physical_id(vcpu->cpu);
-
-		if (x2apic_enabled())
-			new.ndst = dest;
-		else
-			new.ndst = (dest << 8) & 0xFF00;
-
-		/* set 'NV' to 'notification vector' */
-		new.nv = POSTED_INTR_VECTOR;
-	} while (cmpxchg64(&pi_desc->control, old.control,
-			   new.control) != old.control);
-
-	if (!WARN_ON_ONCE(vcpu->pre_pcpu == -1)) {
-		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
-		list_del(&vcpu->blocked_vcpu_list);
-		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
-		vcpu->pre_pcpu = -1;
-	}
-}
-
-/*
- * This routine does the following things for vCPU which is going
- * to be blocked if VT-d PI is enabled.
- * - Store the vCPU to the wakeup list, so when interrupts happen
- *   we can find the right vCPU to wake up.
- * - Change the Posted-interrupt descriptor as below:
- *      'NDST' <-- vcpu->pre_pcpu
- *      'NV' <-- POSTED_INTR_WAKEUP_VECTOR
- * - If 'ON' is set during this process, which means at least one
- *   interrupt is posted for this vCPU, we cannot block it, in
- *   this case, return 1, otherwise, return 0.
- *
- */
-static int pi_pre_block(struct kvm_vcpu *vcpu)
-{
-	unsigned int dest;
-	struct pi_desc old, new;
-	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
-
-	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
-		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
-		!kvm_vcpu_apicv_active(vcpu))
-		return 0;
-
-	WARN_ON(irqs_disabled());
-	local_irq_disable();
-	if (!WARN_ON_ONCE(vcpu->pre_pcpu != -1)) {
-		vcpu->pre_pcpu = vcpu->cpu;
-		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
-		list_add_tail(&vcpu->blocked_vcpu_list,
-			      &per_cpu(blocked_vcpu_on_cpu,
-				       vcpu->pre_pcpu));
-		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
-	}
-
-	do {
-		old.control = new.control = pi_desc->control;
-
-		WARN((pi_desc->sn == 1),
-		     "Warning: SN field of posted-interrupts "
-		     "is set before blocking\n");
-
-		/*
-		 * Since vCPU can be preempted during this process,
-		 * vcpu->cpu could be different with pre_pcpu, we
-		 * need to set pre_pcpu as the destination of wakeup
-		 * notification event, then we can find the right vCPU
-		 * to wakeup in wakeup handler if interrupts happen
-		 * when the vCPU is in blocked state.
-		 */
-		dest = cpu_physical_id(vcpu->pre_pcpu);
-
-		if (x2apic_enabled())
-			new.ndst = dest;
-		else
-			new.ndst = (dest << 8) & 0xFF00;
-
-		/* set 'NV' to 'wakeup vector' */
-		new.nv = POSTED_INTR_WAKEUP_VECTOR;
-	} while (cmpxchg64(&pi_desc->control, old.control,
-			   new.control) != old.control);
-
-	/* We should not block the vCPU if an interrupt is posted for it.  */
-	if (pi_test_on(pi_desc) == 1)
-		__pi_post_block(vcpu);
-
-	local_irq_enable();
-	return (vcpu->pre_pcpu == -1);
-}
-
-static int vmx_pre_block(struct kvm_vcpu *vcpu)
-{
-	if (pi_pre_block(vcpu))
-		return 1;
-
-	if (kvm_lapic_hv_timer_in_use(vcpu))
-		kvm_lapic_switch_to_sw_timer(vcpu);
-
-	return 0;
-}
-
-static void pi_post_block(struct kvm_vcpu *vcpu)
-{
-	if (vcpu->pre_pcpu == -1)
-		return;
-
-	WARN_ON(irqs_disabled());
-	local_irq_disable();
-	__pi_post_block(vcpu);
-	local_irq_enable();
-}
-
-static void vmx_post_block(struct kvm_vcpu *vcpu)
-{
-	if (kvm_x86_ops->set_hv_timer)
-		kvm_lapic_switch_to_hv_timer(vcpu);
-
-	pi_post_block(vcpu);
-}
-
-/*
- * vmx_update_pi_irte - set IRTE for Posted-Interrupts
- *
- * @kvm: kvm
- * @host_irq: host irq of the interrupt
- * @guest_irq: gsi of the interrupt
- * @set: set or unset PI
- * returns 0 on success, < 0 on failure
- */
-static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
-			      uint32_t guest_irq, bool set)
-{
-	struct kvm_kernel_irq_routing_entry *e;
-	struct kvm_irq_routing_table *irq_rt;
-	struct kvm_lapic_irq irq;
-	struct kvm_vcpu *vcpu;
-	struct vcpu_data vcpu_info;
-	int idx, ret = 0;
-
-	if (!kvm_arch_has_assigned_device(kvm) ||
-		!irq_remapping_cap(IRQ_POSTING_CAP) ||
-		!kvm_vcpu_apicv_active(kvm->vcpus[0]))
-		return 0;
-
-	idx = srcu_read_lock(&kvm->irq_srcu);
-	irq_rt = srcu_dereference(kvm->irq_routing, &kvm->irq_srcu);
-	if (guest_irq >= irq_rt->nr_rt_entries ||
-	    hlist_empty(&irq_rt->map[guest_irq])) {
-		pr_warn_once("no route for guest_irq %u/%u (broken user space?)\n",
-			     guest_irq, irq_rt->nr_rt_entries);
-		goto out;
-	}
-
-	hlist_for_each_entry(e, &irq_rt->map[guest_irq], link) {
-		if (e->type != KVM_IRQ_ROUTING_MSI)
-			continue;
-		/*
-		 * VT-d PI cannot support posting multicast/broadcast
-		 * interrupts to a vCPU, we still use interrupt remapping
-		 * for these kind of interrupts.
-		 *
-		 * For lowest-priority interrupts, we only support
-		 * those with single CPU as the destination, e.g. user
-		 * configures the interrupts via /proc/irq or uses
-		 * irqbalance to make the interrupts single-CPU.
-		 *
-		 * We will support full lowest-priority interrupt later.
-		 */
-
-		kvm_set_msi_irq(kvm, e, &irq);
-		if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu)) {
-			/*
-			 * Make sure the IRTE is in remapped mode if
-			 * we don't handle it in posted mode.
-			 */
-			ret = irq_set_vcpu_affinity(host_irq, NULL);
-			if (ret < 0) {
-				printk(KERN_INFO
-				   "failed to back to remapped mode, irq: %u\n",
-				   host_irq);
-				goto out;
-			}
-
-			continue;
-		}
-
-		vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu));
-		vcpu_info.vector = irq.vector;
-
-		trace_kvm_pi_irte_update(host_irq, vcpu->vcpu_id, e->gsi,
-				vcpu_info.vector, vcpu_info.pi_desc_addr, set);
-
-		if (set)
-			ret = irq_set_vcpu_affinity(host_irq, &vcpu_info);
-		else
-			ret = irq_set_vcpu_affinity(host_irq, NULL);
-
-		if (ret < 0) {
-			printk(KERN_INFO "%s: failed to update PI IRTE\n",
-					__func__);
-			goto out;
-		}
-	}
-
-	ret = 0;
-out:
-	srcu_read_unlock(&kvm->irq_srcu, idx);
-	return ret;
-}
-
-static void vmx_setup_mce(struct kvm_vcpu *vcpu)
-{
-	if (vcpu->arch.mcg_cap & MCG_LMCE_P)
-		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
-			FEATURE_CONTROL_LMCE;
-	else
-		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
-			~FEATURE_CONTROL_LMCE;
-}
-
-static int vmx_smi_allowed(struct kvm_vcpu *vcpu)
-{
-	/* we need a nested vmexit to enter SMM, postpone if run is pending */
-	if (to_vmx(vcpu)->nested.nested_run_pending)
-		return 0;
-	return 1;
-}
-
-static int vmx_pre_enter_smm(struct kvm_vcpu *vcpu, char *smstate)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	vmx->nested.smm.guest_mode = is_guest_mode(vcpu);
-	if (vmx->nested.smm.guest_mode)
-		nested_vmx_vmexit(vcpu, -1, 0, 0);
-
-	vmx->nested.smm.vmxon = vmx->nested.vmxon;
-	vmx->nested.vmxon = false;
-	vmx_clear_hlt(vcpu);
-	return 0;
-}
-
-static int vmx_pre_leave_smm(struct kvm_vcpu *vcpu, u64 smbase)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	int ret;
-
-	if (vmx->nested.smm.vmxon) {
-		vmx->nested.vmxon = true;
-		vmx->nested.smm.vmxon = false;
-	}
-
-	if (vmx->nested.smm.guest_mode) {
-		vcpu->arch.hflags &= ~HF_SMM_MASK;
-		ret = nested_vmx_enter_non_root_mode(vcpu, false);
-		vcpu->arch.hflags |= HF_SMM_MASK;
-		if (ret)
-			return ret;
-
-		vmx->nested.smm.guest_mode = false;
-	}
-	return 0;
-}
-
-static int enable_smi_window(struct kvm_vcpu *vcpu)
-{
-	return 0;
-}
-
-static inline int vmx_has_valid_vmcs12(struct kvm_vcpu *vcpu)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-
-	/*
-	 * In case we do two consecutive get/set_nested_state()s while L2 was
-	 * running hv_evmcs may end up not being mapped (we map it from
-	 * nested_vmx_run()/vmx_vcpu_run()). Check is_guest_mode() as we always
-	 * have vmcs12 if it is true.
-	 */
-	return is_guest_mode(vcpu) || vmx->nested.current_vmptr != -1ull ||
-		vmx->nested.hv_evmcs;
-}
-
-static int vmx_get_nested_state(struct kvm_vcpu *vcpu,
-				struct kvm_nested_state __user *user_kvm_nested_state,
-				u32 user_data_size)
-{
-	struct vcpu_vmx *vmx;
-	struct vmcs12 *vmcs12;
-	struct kvm_nested_state kvm_state = {
-		.flags = 0,
-		.format = 0,
-		.size = sizeof(kvm_state),
-		.vmx.vmxon_pa = -1ull,
-		.vmx.vmcs_pa = -1ull,
-	};
-
-	if (!vcpu)
-		return kvm_state.size + 2 * VMCS12_SIZE;
-
-	vmx = to_vmx(vcpu);
-	vmcs12 = get_vmcs12(vcpu);
-
-	if (nested_vmx_allowed(vcpu) && vmx->nested.enlightened_vmcs_enabled)
-		kvm_state.flags |= KVM_STATE_NESTED_EVMCS;
-
-	if (nested_vmx_allowed(vcpu) &&
-	    (vmx->nested.vmxon || vmx->nested.smm.vmxon)) {
-		kvm_state.vmx.vmxon_pa = vmx->nested.vmxon_ptr;
-		kvm_state.vmx.vmcs_pa = vmx->nested.current_vmptr;
-
-		if (vmx_has_valid_vmcs12(vcpu)) {
-			kvm_state.size += VMCS12_SIZE;
-
-			if (is_guest_mode(vcpu) &&
-			    nested_cpu_has_shadow_vmcs(vmcs12) &&
-			    vmcs12->vmcs_link_pointer != -1ull)
-				kvm_state.size += VMCS12_SIZE;
-		}
-
-		if (vmx->nested.smm.vmxon)
-			kvm_state.vmx.smm.flags |= KVM_STATE_NESTED_SMM_VMXON;
-
-		if (vmx->nested.smm.guest_mode)
-			kvm_state.vmx.smm.flags |= KVM_STATE_NESTED_SMM_GUEST_MODE;
-
-		if (is_guest_mode(vcpu)) {
-			kvm_state.flags |= KVM_STATE_NESTED_GUEST_MODE;
-
-			if (vmx->nested.nested_run_pending)
-				kvm_state.flags |= KVM_STATE_NESTED_RUN_PENDING;
-		}
-	}
-
-	if (user_data_size < kvm_state.size)
-		goto out;
-
-	if (copy_to_user(user_kvm_nested_state, &kvm_state, sizeof(kvm_state)))
-		return -EFAULT;
-
-	if (!vmx_has_valid_vmcs12(vcpu))
-		goto out;
-
-	/*
-	 * When running L2, the authoritative vmcs12 state is in the
-	 * vmcs02. When running L1, the authoritative vmcs12 state is
-	 * in the shadow or enlightened vmcs linked to vmcs01, unless
-	 * need_vmcs12_sync is set, in which case, the authoritative
-	 * vmcs12 state is in the vmcs12 already.
-	 */
-	if (is_guest_mode(vcpu)) {
-		sync_vmcs12(vcpu, vmcs12);
-	} else if (!vmx->nested.need_vmcs12_sync) {
-		if (vmx->nested.hv_evmcs)
-			copy_enlightened_to_vmcs12(vmx);
-		else if (enable_shadow_vmcs)
-			copy_shadow_to_vmcs12(vmx);
-	}
-
-	if (copy_to_user(user_kvm_nested_state->data, vmcs12, sizeof(*vmcs12)))
-		return -EFAULT;
-
-	if (nested_cpu_has_shadow_vmcs(vmcs12) &&
-	    vmcs12->vmcs_link_pointer != -1ull) {
-		if (copy_to_user(user_kvm_nested_state->data + VMCS12_SIZE,
-				 get_shadow_vmcs12(vcpu), sizeof(*vmcs12)))
-			return -EFAULT;
-	}
-
-out:
-	return kvm_state.size;
-}
-
-static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
-				struct kvm_nested_state __user *user_kvm_nested_state,
-				struct kvm_nested_state *kvm_state)
-{
-	struct vcpu_vmx *vmx = to_vmx(vcpu);
-	struct vmcs12 *vmcs12;
-	u32 exit_qual;
-	int ret;
-
-	if (kvm_state->format != 0)
-		return -EINVAL;
-
-	if (kvm_state->flags & KVM_STATE_NESTED_EVMCS)
-		nested_enable_evmcs(vcpu, NULL);
-
-	if (!nested_vmx_allowed(vcpu))
-		return kvm_state->vmx.vmxon_pa == -1ull ? 0 : -EINVAL;
-
-	if (kvm_state->vmx.vmxon_pa == -1ull) {
-		if (kvm_state->vmx.smm.flags)
-			return -EINVAL;
-
-		if (kvm_state->vmx.vmcs_pa != -1ull)
-			return -EINVAL;
-
-		vmx_leave_nested(vcpu);
-		return 0;
-	}
-
-	if (!page_address_valid(vcpu, kvm_state->vmx.vmxon_pa))
-		return -EINVAL;
-
-	if ((kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE) &&
-	    (kvm_state->flags & KVM_STATE_NESTED_GUEST_MODE))
-		return -EINVAL;
-
-	if (kvm_state->vmx.smm.flags &
-	    ~(KVM_STATE_NESTED_SMM_GUEST_MODE | KVM_STATE_NESTED_SMM_VMXON))
-		return -EINVAL;
-
-	/*
-	 * SMM temporarily disables VMX, so we cannot be in guest mode,
-	 * nor can VMLAUNCH/VMRESUME be pending.  Outside SMM, SMM flags
-	 * must be zero.
-	 */
-	if (is_smm(vcpu) ? kvm_state->flags : kvm_state->vmx.smm.flags)
-		return -EINVAL;
-
-	if ((kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE) &&
-	    !(kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_VMXON))
-		return -EINVAL;
-
-	vmx_leave_nested(vcpu);
-	if (kvm_state->vmx.vmxon_pa == -1ull)
-		return 0;
-
-	vmx->nested.vmxon_ptr = kvm_state->vmx.vmxon_pa;
-	ret = enter_vmx_operation(vcpu);
-	if (ret)
-		return ret;
-
-	/* Empty 'VMXON' state is permitted */
-	if (kvm_state->size < sizeof(kvm_state) + sizeof(*vmcs12))
-		return 0;
-
-	if (kvm_state->vmx.vmcs_pa != -1ull) {
-		if (kvm_state->vmx.vmcs_pa == kvm_state->vmx.vmxon_pa ||
-		    !page_address_valid(vcpu, kvm_state->vmx.vmcs_pa))
-			return -EINVAL;
-
-		set_current_vmptr(vmx, kvm_state->vmx.vmcs_pa);
-	} else if (kvm_state->flags & KVM_STATE_NESTED_EVMCS) {
-		/*
-		 * Sync eVMCS upon entry as we may not have
-		 * HV_X64_MSR_VP_ASSIST_PAGE set up yet.
-		 */
-		vmx->nested.need_vmcs12_sync = true;
-	} else {
-		return -EINVAL;
-	}
-
-	if (kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_VMXON) {
-		vmx->nested.smm.vmxon = true;
-		vmx->nested.vmxon = false;
-
-		if (kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE)
-			vmx->nested.smm.guest_mode = true;
-	}
-
-	vmcs12 = get_vmcs12(vcpu);
-	if (copy_from_user(vmcs12, user_kvm_nested_state->data, sizeof(*vmcs12)))
-		return -EFAULT;
-
-	if (vmcs12->hdr.revision_id != VMCS12_REVISION)
-		return -EINVAL;
-
-	if (!(kvm_state->flags & KVM_STATE_NESTED_GUEST_MODE))
-		return 0;
-
-	vmx->nested.nested_run_pending =
-		!!(kvm_state->flags & KVM_STATE_NESTED_RUN_PENDING);
-
-	if (nested_cpu_has_shadow_vmcs(vmcs12) &&
-	    vmcs12->vmcs_link_pointer != -1ull) {
-		struct vmcs12 *shadow_vmcs12 = get_shadow_vmcs12(vcpu);
-		if (kvm_state->size < sizeof(kvm_state) + 2 * sizeof(*vmcs12))
-			return -EINVAL;
-
-		if (copy_from_user(shadow_vmcs12,
-				   user_kvm_nested_state->data + VMCS12_SIZE,
-				   sizeof(*vmcs12)))
-			return -EFAULT;
-
-		if (shadow_vmcs12->hdr.revision_id != VMCS12_REVISION ||
-		    !shadow_vmcs12->hdr.shadow_vmcs)
-			return -EINVAL;
-	}
-
-	if (check_vmentry_prereqs(vcpu, vmcs12) ||
-	    check_vmentry_postreqs(vcpu, vmcs12, &exit_qual))
-		return -EINVAL;
-
-	vmx->nested.dirty_vmcs12 = true;
-	ret = nested_vmx_enter_non_root_mode(vcpu, false);
-	if (ret)
-		return -EINVAL;
-
-	return 0;
-}
-
-static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
-	.cpu_has_kvm_support = cpu_has_kvm_support,
-	.disabled_by_bios = vmx_disabled_by_bios,
-	.hardware_setup = hardware_setup,
-	.hardware_unsetup = hardware_unsetup,
-	.check_processor_compatibility = vmx_check_processor_compat,
-	.hardware_enable = hardware_enable,
-	.hardware_disable = hardware_disable,
-	.cpu_has_accelerated_tpr = report_flexpriority,
-	.has_emulated_msr = vmx_has_emulated_msr,
-
-	.vm_init = vmx_vm_init,
-	.vm_alloc = vmx_vm_alloc,
-	.vm_free = vmx_vm_free,
-
-	.vcpu_create = vmx_create_vcpu,
-	.vcpu_free = vmx_free_vcpu,
-	.vcpu_reset = vmx_vcpu_reset,
-
-	.prepare_guest_switch = vmx_prepare_switch_to_guest,
-	.vcpu_load = vmx_vcpu_load,
-	.vcpu_put = vmx_vcpu_put,
-
-	.update_bp_intercept = update_exception_bitmap,
-	.get_msr_feature = vmx_get_msr_feature,
-	.get_msr = vmx_get_msr,
-	.set_msr = vmx_set_msr,
-	.get_segment_base = vmx_get_segment_base,
-	.get_segment = vmx_get_segment,
-	.set_segment = vmx_set_segment,
-	.get_cpl = vmx_get_cpl,
-	.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
-	.decache_cr0_guest_bits = vmx_decache_cr0_guest_bits,
-	.decache_cr3 = vmx_decache_cr3,
-	.decache_cr4_guest_bits = vmx_decache_cr4_guest_bits,
-	.set_cr0 = vmx_set_cr0,
-	.set_cr3 = vmx_set_cr3,
-	.set_cr4 = vmx_set_cr4,
-	.set_efer = vmx_set_efer,
-	.get_idt = vmx_get_idt,
-	.set_idt = vmx_set_idt,
-	.get_gdt = vmx_get_gdt,
-	.set_gdt = vmx_set_gdt,
-	.get_dr6 = vmx_get_dr6,
-	.set_dr6 = vmx_set_dr6,
-	.set_dr7 = vmx_set_dr7,
-	.sync_dirty_debug_regs = vmx_sync_dirty_debug_regs,
-	.cache_reg = vmx_cache_reg,
-	.get_rflags = vmx_get_rflags,
-	.set_rflags = vmx_set_rflags,
-
-	.tlb_flush = vmx_flush_tlb,
-	.tlb_flush_gva = vmx_flush_tlb_gva,
-
-	.run = vmx_vcpu_run,
-	.handle_exit = vmx_handle_exit,
-	.skip_emulated_instruction = skip_emulated_instruction,
-	.set_interrupt_shadow = vmx_set_interrupt_shadow,
-	.get_interrupt_shadow = vmx_get_interrupt_shadow,
-	.patch_hypercall = vmx_patch_hypercall,
-	.set_irq = vmx_inject_irq,
-	.set_nmi = vmx_inject_nmi,
-	.queue_exception = vmx_queue_exception,
-	.cancel_injection = vmx_cancel_injection,
-	.interrupt_allowed = vmx_interrupt_allowed,
-	.nmi_allowed = vmx_nmi_allowed,
-	.get_nmi_mask = vmx_get_nmi_mask,
-	.set_nmi_mask = vmx_set_nmi_mask,
-	.enable_nmi_window = enable_nmi_window,
-	.enable_irq_window = enable_irq_window,
-	.update_cr8_intercept = update_cr8_intercept,
-	.set_virtual_apic_mode = vmx_set_virtual_apic_mode,
-	.set_apic_access_page_addr = vmx_set_apic_access_page_addr,
-	.get_enable_apicv = vmx_get_enable_apicv,
-	.refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
-	.load_eoi_exitmap = vmx_load_eoi_exitmap,
-	.apicv_post_state_restore = vmx_apicv_post_state_restore,
-	.hwapic_irr_update = vmx_hwapic_irr_update,
-	.hwapic_isr_update = vmx_hwapic_isr_update,
-	.guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
-	.sync_pir_to_irr = vmx_sync_pir_to_irr,
-	.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
-
-	.set_tss_addr = vmx_set_tss_addr,
-	.set_identity_map_addr = vmx_set_identity_map_addr,
-	.get_tdp_level = get_ept_level,
-	.get_mt_mask = vmx_get_mt_mask,
-
-	.get_exit_info = vmx_get_exit_info,
-
-	.get_lpage_level = vmx_get_lpage_level,
-
-	.cpuid_update = vmx_cpuid_update,
-
-	.rdtscp_supported = vmx_rdtscp_supported,
-	.invpcid_supported = vmx_invpcid_supported,
-
-	.set_supported_cpuid = vmx_set_supported_cpuid,
-
-	.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
-
-	.read_l1_tsc_offset = vmx_read_l1_tsc_offset,
-	.write_l1_tsc_offset = vmx_write_l1_tsc_offset,
-
-	.set_tdp_cr3 = vmx_set_cr3,
-
-	.check_intercept = vmx_check_intercept,
-	.handle_external_intr = vmx_handle_external_intr,
-	.mpx_supported = vmx_mpx_supported,
-	.xsaves_supported = vmx_xsaves_supported,
-	.umip_emulated = vmx_umip_emulated,
-
-	.check_nested_events = vmx_check_nested_events,
-	.request_immediate_exit = vmx_request_immediate_exit,
-
-	.sched_in = vmx_sched_in,
-
-	.slot_enable_log_dirty = vmx_slot_enable_log_dirty,
-	.slot_disable_log_dirty = vmx_slot_disable_log_dirty,
-	.flush_log_dirty = vmx_flush_log_dirty,
-	.enable_log_dirty_pt_masked = vmx_enable_log_dirty_pt_masked,
-	.write_log_dirty = vmx_write_pml_buffer,
-
-	.pre_block = vmx_pre_block,
-	.post_block = vmx_post_block,
-
-	.pmu_ops = &intel_pmu_ops,
-
-	.update_pi_irte = vmx_update_pi_irte,
-
-#ifdef CONFIG_X86_64
-	.set_hv_timer = vmx_set_hv_timer,
-	.cancel_hv_timer = vmx_cancel_hv_timer,
-#endif
-
-	.setup_mce = vmx_setup_mce,
-
-	.get_nested_state = vmx_get_nested_state,
-	.set_nested_state = vmx_set_nested_state,
-	.get_vmcs12_pages = nested_get_vmcs12_pages,
-
-	.smi_allowed = vmx_smi_allowed,
-	.pre_enter_smm = vmx_pre_enter_smm,
-	.pre_leave_smm = vmx_pre_leave_smm,
-	.enable_smi_window = enable_smi_window,
-
-	.nested_enable_evmcs = nested_enable_evmcs,
-};
-
-static void vmx_cleanup_l1d_flush(void)
-{
-	if (vmx_l1d_flush_pages) {
-		free_pages((unsigned long)vmx_l1d_flush_pages, L1D_CACHE_ORDER);
-		vmx_l1d_flush_pages = NULL;
-	}
-	/* Restore state so sysfs ignores VMX */
-	l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
-}
-
-static void vmx_exit(void)
-{
-#ifdef CONFIG_KEXEC_CORE
-	RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
-	synchronize_rcu();
-#endif
-
-	kvm_exit();
-
-#if IS_ENABLED(CONFIG_HYPERV)
-	if (static_branch_unlikely(&enable_evmcs)) {
-		int cpu;
-		struct hv_vp_assist_page *vp_ap;
-		/*
-		 * Reset everything to support using non-enlightened VMCS
-		 * access later (e.g. when we reload the module with
-		 * enlightened_vmcs=0)
-		 */
-		for_each_online_cpu(cpu) {
-			vp_ap =	hv_get_vp_assist_page(cpu);
-
-			if (!vp_ap)
-				continue;
-
-			vp_ap->current_nested_vmcs = 0;
-			vp_ap->enlighten_vmentry = 0;
-		}
-
-		static_branch_disable(&enable_evmcs);
-	}
-#endif
-	vmx_cleanup_l1d_flush();
-}
-module_exit(vmx_exit);
-
-static int __init vmx_init(void)
-{
-	int r;
-
-#if IS_ENABLED(CONFIG_HYPERV)
-	/*
-	 * Enlightened VMCS usage should be recommended and the host needs
-	 * to support eVMCS v1 or above. We can also disable eVMCS support
-	 * with module parameter.
-	 */
-	if (enlightened_vmcs &&
-	    ms_hyperv.hints & HV_X64_ENLIGHTENED_VMCS_RECOMMENDED &&
-	    (ms_hyperv.nested_features & HV_X64_ENLIGHTENED_VMCS_VERSION) >=
-	    KVM_EVMCS_VERSION) {
-		int cpu;
-
-		/* Check that we have assist pages on all online CPUs */
-		for_each_online_cpu(cpu) {
-			if (!hv_get_vp_assist_page(cpu)) {
-				enlightened_vmcs = false;
-				break;
-			}
-		}
-
-		if (enlightened_vmcs) {
-			pr_info("KVM: vmx: using Hyper-V Enlightened VMCS\n");
-			static_branch_enable(&enable_evmcs);
-		}
-	} else {
-		enlightened_vmcs = false;
-	}
-#endif
-
-	r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
-		     __alignof__(struct vcpu_vmx), THIS_MODULE);
-	if (r)
-		return r;
-
-	/*
-	 * Must be called after kvm_init() so enable_ept is properly set
-	 * up. Hand the parameter mitigation value in which was stored in
-	 * the pre module init parser. If no parameter was given, it will
-	 * contain 'auto' which will be turned into the default 'cond'
-	 * mitigation mode.
-	 */
-	if (boot_cpu_has(X86_BUG_L1TF)) {
-		r = vmx_setup_l1d_flush(vmentry_l1d_flush_param);
-		if (r) {
-			vmx_exit();
-			return r;
-		}
-	}
-
-#ifdef CONFIG_KEXEC_CORE
-	rcu_assign_pointer(crash_vmclear_loaded_vmcss,
-			   crash_vmclear_local_loaded_vmcss);
-#endif
-	vmx_check_vmcs12_offsets();
-
-	return 0;
-}
-module_init(vmx_init);
diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h
new file mode 100644
index 000000000000..854e144131c6
--- /dev/null
+++ b/arch/x86/kvm/vmx/capabilities.h
@@ -0,0 +1,343 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_CAPS_H
+#define __KVM_X86_VMX_CAPS_H
+
+#include "lapic.h"
+
+extern bool __read_mostly enable_vpid;
+extern bool __read_mostly flexpriority_enabled;
+extern bool __read_mostly enable_ept;
+extern bool __read_mostly enable_unrestricted_guest;
+extern bool __read_mostly enable_ept_ad_bits;
+extern bool __read_mostly enable_pml;
+extern int __read_mostly pt_mode;
+
+#define PT_MODE_SYSTEM		0
+#define PT_MODE_HOST_GUEST	1
+
+struct nested_vmx_msrs {
+	/*
+	 * We only store the "true" versions of the VMX capability MSRs. We
+	 * generate the "non-true" versions by setting the must-be-1 bits
+	 * according to the SDM.
+	 */
+	u32 procbased_ctls_low;
+	u32 procbased_ctls_high;
+	u32 secondary_ctls_low;
+	u32 secondary_ctls_high;
+	u32 pinbased_ctls_low;
+	u32 pinbased_ctls_high;
+	u32 exit_ctls_low;
+	u32 exit_ctls_high;
+	u32 entry_ctls_low;
+	u32 entry_ctls_high;
+	u32 misc_low;
+	u32 misc_high;
+	u32 ept_caps;
+	u32 vpid_caps;
+	u64 basic;
+	u64 cr0_fixed0;
+	u64 cr0_fixed1;
+	u64 cr4_fixed0;
+	u64 cr4_fixed1;
+	u64 vmcs_enum;
+	u64 vmfunc_controls;
+};
+
+struct vmcs_config {
+	int size;
+	int order;
+	u32 basic_cap;
+	u32 revision_id;
+	u32 pin_based_exec_ctrl;
+	u32 cpu_based_exec_ctrl;
+	u32 cpu_based_2nd_exec_ctrl;
+	u32 vmexit_ctrl;
+	u32 vmentry_ctrl;
+	struct nested_vmx_msrs nested;
+};
+extern struct vmcs_config vmcs_config;
+
+struct vmx_capability {
+	u32 ept;
+	u32 vpid;
+};
+extern struct vmx_capability vmx_capability;
+
+static inline bool cpu_has_vmx_basic_inout(void)
+{
+	return	(((u64)vmcs_config.basic_cap << 32) & VMX_BASIC_INOUT);
+}
+
+static inline bool cpu_has_virtual_nmis(void)
+{
+	return vmcs_config.pin_based_exec_ctrl & PIN_BASED_VIRTUAL_NMIS;
+}
+
+static inline bool cpu_has_vmx_preemption_timer(void)
+{
+	return vmcs_config.pin_based_exec_ctrl &
+		PIN_BASED_VMX_PREEMPTION_TIMER;
+}
+
+static inline bool cpu_has_vmx_posted_intr(void)
+{
+	return IS_ENABLED(CONFIG_X86_LOCAL_APIC) &&
+		vmcs_config.pin_based_exec_ctrl & PIN_BASED_POSTED_INTR;
+}
+
+static inline bool cpu_has_load_ia32_efer(void)
+{
+	return (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_EFER) &&
+	       (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_EFER);
+}
+
+static inline bool cpu_has_load_perf_global_ctrl(void)
+{
+	return (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL) &&
+	       (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL);
+}
+
+static inline bool vmx_mpx_supported(void)
+{
+	return (vmcs_config.vmexit_ctrl & VM_EXIT_CLEAR_BNDCFGS) &&
+		(vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_BNDCFGS);
+}
+
+static inline bool cpu_has_vmx_tpr_shadow(void)
+{
+	return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW;
+}
+
+static inline bool cpu_need_tpr_shadow(struct kvm_vcpu *vcpu)
+{
+	return cpu_has_vmx_tpr_shadow() && lapic_in_kernel(vcpu);
+}
+
+static inline bool cpu_has_vmx_msr_bitmap(void)
+{
+	return vmcs_config.cpu_based_exec_ctrl & CPU_BASED_USE_MSR_BITMAPS;
+}
+
+static inline bool cpu_has_secondary_exec_ctrls(void)
+{
+	return vmcs_config.cpu_based_exec_ctrl &
+		CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
+}
+
+static inline bool cpu_has_vmx_virtualize_apic_accesses(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+}
+
+static inline bool cpu_has_vmx_ept(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_ENABLE_EPT;
+}
+
+static inline bool vmx_umip_emulated(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_DESC;
+}
+
+static inline bool cpu_has_vmx_rdtscp(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_RDTSCP;
+}
+
+static inline bool cpu_has_vmx_virtualize_x2apic_mode(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
+}
+
+static inline bool cpu_has_vmx_vpid(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_ENABLE_VPID;
+}
+
+static inline bool cpu_has_vmx_wbinvd_exit(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_WBINVD_EXITING;
+}
+
+static inline bool cpu_has_vmx_unrestricted_guest(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_UNRESTRICTED_GUEST;
+}
+
+static inline bool cpu_has_vmx_apic_register_virt(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_APIC_REGISTER_VIRT;
+}
+
+static inline bool cpu_has_vmx_virtual_intr_delivery(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY;
+}
+
+static inline bool cpu_has_vmx_ple(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_PAUSE_LOOP_EXITING;
+}
+
+static inline bool vmx_rdrand_supported(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_RDRAND_EXITING;
+}
+
+static inline bool cpu_has_vmx_invpcid(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_ENABLE_INVPCID;
+}
+
+static inline bool cpu_has_vmx_vmfunc(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_ENABLE_VMFUNC;
+}
+
+static inline bool cpu_has_vmx_shadow_vmcs(void)
+{
+	u64 vmx_msr;
+
+	/* check if the cpu supports writing r/o exit information fields */
+	rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
+	if (!(vmx_msr & MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS))
+		return false;
+
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_SHADOW_VMCS;
+}
+
+static inline bool cpu_has_vmx_encls_vmexit(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_ENCLS_EXITING;
+}
+
+static inline bool vmx_rdseed_supported(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_RDSEED_EXITING;
+}
+
+static inline bool cpu_has_vmx_pml(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl & SECONDARY_EXEC_ENABLE_PML;
+}
+
+static inline bool vmx_xsaves_supported(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_XSAVES;
+}
+
+static inline bool cpu_has_vmx_tsc_scaling(void)
+{
+	return vmcs_config.cpu_based_2nd_exec_ctrl &
+		SECONDARY_EXEC_TSC_SCALING;
+}
+
+static inline bool cpu_has_vmx_apicv(void)
+{
+	return cpu_has_vmx_apic_register_virt() &&
+		cpu_has_vmx_virtual_intr_delivery() &&
+		cpu_has_vmx_posted_intr();
+}
+
+static inline bool cpu_has_vmx_flexpriority(void)
+{
+	return cpu_has_vmx_tpr_shadow() &&
+		cpu_has_vmx_virtualize_apic_accesses();
+}
+
+static inline bool cpu_has_vmx_ept_execute_only(void)
+{
+	return vmx_capability.ept & VMX_EPT_EXECUTE_ONLY_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_4levels(void)
+{
+	return vmx_capability.ept & VMX_EPT_PAGE_WALK_4_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_5levels(void)
+{
+	return vmx_capability.ept & VMX_EPT_PAGE_WALK_5_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_mt_wb(void)
+{
+	return vmx_capability.ept & VMX_EPTP_WB_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_2m_page(void)
+{
+	return vmx_capability.ept & VMX_EPT_2MB_PAGE_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_1g_page(void)
+{
+	return vmx_capability.ept & VMX_EPT_1GB_PAGE_BIT;
+}
+
+static inline bool cpu_has_vmx_ept_ad_bits(void)
+{
+	return vmx_capability.ept & VMX_EPT_AD_BIT;
+}
+
+static inline bool cpu_has_vmx_invept_context(void)
+{
+	return vmx_capability.ept & VMX_EPT_EXTENT_CONTEXT_BIT;
+}
+
+static inline bool cpu_has_vmx_invept_global(void)
+{
+	return vmx_capability.ept & VMX_EPT_EXTENT_GLOBAL_BIT;
+}
+
+static inline bool cpu_has_vmx_invvpid(void)
+{
+	return vmx_capability.vpid & VMX_VPID_INVVPID_BIT;
+}
+
+static inline bool cpu_has_vmx_invvpid_individual_addr(void)
+{
+	return vmx_capability.vpid & VMX_VPID_EXTENT_INDIVIDUAL_ADDR_BIT;
+}
+
+static inline bool cpu_has_vmx_invvpid_single(void)
+{
+	return vmx_capability.vpid & VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT;
+}
+
+static inline bool cpu_has_vmx_invvpid_global(void)
+{
+	return vmx_capability.vpid & VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT;
+}
+
+static inline bool cpu_has_vmx_intel_pt(void)
+{
+	u64 vmx_msr;
+
+	rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
+	return (vmx_msr & MSR_IA32_VMX_MISC_INTEL_PT) &&
+		(vmcs_config.cpu_based_2nd_exec_ctrl & SECONDARY_EXEC_PT_USE_GPA) &&
+		(vmcs_config.vmexit_ctrl & VM_EXIT_CLEAR_IA32_RTIT_CTL) &&
+		(vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_RTIT_CTL);
+}
+
+#endif /* __KVM_X86_VMX_CAPS_H */
diff --git a/arch/x86/kvm/vmx_evmcs.h b/arch/x86/kvm/vmx/evmcs.c
index 210a884090ad..95bc2247478d 100644
--- a/arch/x86/kvm/vmx_evmcs.h
+++ b/arch/x86/kvm/vmx/evmcs.c
@@ -1,20 +1,22 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __KVM_X86_VMX_EVMCS_H
-#define __KVM_X86_VMX_EVMCS_H
+// SPDX-License-Identifier: GPL-2.0
 
-#include <asm/hyperv-tlfs.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+
+#include "evmcs.h"
+#include "vmcs.h"
+#include "vmx.h"
+
+DEFINE_STATIC_KEY_FALSE(enable_evmcs);
+
+#if IS_ENABLED(CONFIG_HYPERV)
 
 #define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
 #define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)
 #define EVMCS1_FIELD(number, name, clean_field)[ROL16(number, 6)] = \
 		{EVMCS1_OFFSET(name), clean_field}
 
-struct evmcs_field {
-	u16 offset;
-	u16 clean_field;
-};
-
-static const struct evmcs_field vmcs_field_to_evmcs_1[] = {
+const struct evmcs_field vmcs_field_to_evmcs_1[] = {
 	/* 64 bit rw */
 	EVMCS1_FIELD(GUEST_RIP, guest_rip,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
@@ -298,27 +300,53 @@ static const struct evmcs_field vmcs_field_to_evmcs_1[] = {
 	EVMCS1_FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),
 };
+const unsigned int nr_evmcs_1_fields = ARRAY_SIZE(vmcs_field_to_evmcs_1);
 
-static __always_inline int get_evmcs_offset(unsigned long field,
-					    u16 *clean_field)
+void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)
 {
-	unsigned int index = ROL16(field, 6);
-	const struct evmcs_field *evmcs_field;
+	vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;
+	vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
 
-	if (unlikely(index >= ARRAY_SIZE(vmcs_field_to_evmcs_1))) {
-		WARN_ONCE(1, "KVM: accessing unsupported EVMCS field %lx\n",
-			  field);
-		return -ENOENT;
-	}
+	vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
+	vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
 
-	evmcs_field = &vmcs_field_to_evmcs_1[index];
+}
+#endif
 
-	if (clean_field)
-		*clean_field = evmcs_field->clean_field;
+uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu)
+{
+       struct vcpu_vmx *vmx = to_vmx(vcpu);
+       /*
+        * vmcs_version represents the range of supported Enlightened VMCS
+        * versions: lower 8 bits is the minimal version, higher 8 bits is the
+        * maximum supported version. KVM supports versions from 1 to
+        * KVM_EVMCS_VERSION.
+        */
+       if (vmx->nested.enlightened_vmcs_enabled)
+               return (KVM_EVMCS_VERSION << 8) | 1;
 
-	return evmcs_field->offset;
+       return 0;
 }
 
-#undef ROL16
+int nested_enable_evmcs(struct kvm_vcpu *vcpu,
+			uint16_t *vmcs_version)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (vmcs_version)
+		*vmcs_version = nested_get_evmcs_version(vcpu);
+
+	/* We don't support disabling the feature for simplicity. */
+	if (vmx->nested.enlightened_vmcs_enabled)
+		return 0;
 
-#endif /* __KVM_X86_VMX_EVMCS_H */
+	vmx->nested.enlightened_vmcs_enabled = true;
+
+	vmx->nested.msrs.pinbased_ctls_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;
+	vmx->nested.msrs.entry_ctls_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
+	vmx->nested.msrs.exit_ctls_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
+	vmx->nested.msrs.secondary_ctls_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
+	vmx->nested.msrs.vmfunc_controls &= ~EVMCS1_UNSUPPORTED_VMFUNC;
+
+	return 0;
+}
diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h
new file mode 100644
index 000000000000..e0fcef85b332
--- /dev/null
+++ b/arch/x86/kvm/vmx/evmcs.h
@@ -0,0 +1,202 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_EVMCS_H
+#define __KVM_X86_VMX_EVMCS_H
+
+#include <linux/jump_label.h>
+
+#include <asm/hyperv-tlfs.h>
+#include <asm/mshyperv.h>
+#include <asm/vmx.h>
+
+#include "capabilities.h"
+#include "vmcs.h"
+
+struct vmcs_config;
+
+DECLARE_STATIC_KEY_FALSE(enable_evmcs);
+
+#define current_evmcs ((struct hv_enlightened_vmcs *)this_cpu_read(current_vmcs))
+
+#define KVM_EVMCS_VERSION 1
+
+/*
+ * Enlightened VMCSv1 doesn't support these:
+ *
+ *	POSTED_INTR_NV                  = 0x00000002,
+ *	GUEST_INTR_STATUS               = 0x00000810,
+ *	APIC_ACCESS_ADDR		= 0x00002014,
+ *	POSTED_INTR_DESC_ADDR           = 0x00002016,
+ *	EOI_EXIT_BITMAP0                = 0x0000201c,
+ *	EOI_EXIT_BITMAP1                = 0x0000201e,
+ *	EOI_EXIT_BITMAP2                = 0x00002020,
+ *	EOI_EXIT_BITMAP3                = 0x00002022,
+ *	GUEST_PML_INDEX			= 0x00000812,
+ *	PML_ADDRESS			= 0x0000200e,
+ *	VM_FUNCTION_CONTROL             = 0x00002018,
+ *	EPTP_LIST_ADDRESS               = 0x00002024,
+ *	VMREAD_BITMAP                   = 0x00002026,
+ *	VMWRITE_BITMAP                  = 0x00002028,
+ *
+ *	TSC_MULTIPLIER                  = 0x00002032,
+ *	PLE_GAP                         = 0x00004020,
+ *	PLE_WINDOW                      = 0x00004022,
+ *	VMX_PREEMPTION_TIMER_VALUE      = 0x0000482E,
+ *      GUEST_IA32_PERF_GLOBAL_CTRL     = 0x00002808,
+ *      HOST_IA32_PERF_GLOBAL_CTRL      = 0x00002c04,
+ *
+ * Currently unsupported in KVM:
+ *	GUEST_IA32_RTIT_CTL		= 0x00002814,
+ */
+#define EVMCS1_UNSUPPORTED_PINCTRL (PIN_BASED_POSTED_INTR | \
+				    PIN_BASED_VMX_PREEMPTION_TIMER)
+#define EVMCS1_UNSUPPORTED_2NDEXEC					\
+	(SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |				\
+	 SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |			\
+	 SECONDARY_EXEC_APIC_REGISTER_VIRT |				\
+	 SECONDARY_EXEC_ENABLE_PML |					\
+	 SECONDARY_EXEC_ENABLE_VMFUNC |					\
+	 SECONDARY_EXEC_SHADOW_VMCS |					\
+	 SECONDARY_EXEC_TSC_SCALING |					\
+	 SECONDARY_EXEC_PAUSE_LOOP_EXITING)
+#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
+#define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
+#define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING)
+
+#if IS_ENABLED(CONFIG_HYPERV)
+
+struct evmcs_field {
+	u16 offset;
+	u16 clean_field;
+};
+
+extern const struct evmcs_field vmcs_field_to_evmcs_1[];
+extern const unsigned int nr_evmcs_1_fields;
+
+#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
+
+static __always_inline int get_evmcs_offset(unsigned long field,
+					    u16 *clean_field)
+{
+	unsigned int index = ROL16(field, 6);
+	const struct evmcs_field *evmcs_field;
+
+	if (unlikely(index >= nr_evmcs_1_fields)) {
+		WARN_ONCE(1, "KVM: accessing unsupported EVMCS field %lx\n",
+			  field);
+		return -ENOENT;
+	}
+
+	evmcs_field = &vmcs_field_to_evmcs_1[index];
+
+	if (clean_field)
+		*clean_field = evmcs_field->clean_field;
+
+	return evmcs_field->offset;
+}
+
+#undef ROL16
+
+static inline void evmcs_write64(unsigned long field, u64 value)
+{
+	u16 clean_field;
+	int offset = get_evmcs_offset(field, &clean_field);
+
+	if (offset < 0)
+		return;
+
+	*(u64 *)((char *)current_evmcs + offset) = value;
+
+	current_evmcs->hv_clean_fields &= ~clean_field;
+}
+
+static inline void evmcs_write32(unsigned long field, u32 value)
+{
+	u16 clean_field;
+	int offset = get_evmcs_offset(field, &clean_field);
+
+	if (offset < 0)
+		return;
+
+	*(u32 *)((char *)current_evmcs + offset) = value;
+	current_evmcs->hv_clean_fields &= ~clean_field;
+}
+
+static inline void evmcs_write16(unsigned long field, u16 value)
+{
+	u16 clean_field;
+	int offset = get_evmcs_offset(field, &clean_field);
+
+	if (offset < 0)
+		return;
+
+	*(u16 *)((char *)current_evmcs + offset) = value;
+	current_evmcs->hv_clean_fields &= ~clean_field;
+}
+
+static inline u64 evmcs_read64(unsigned long field)
+{
+	int offset = get_evmcs_offset(field, NULL);
+
+	if (offset < 0)
+		return 0;
+
+	return *(u64 *)((char *)current_evmcs + offset);
+}
+
+static inline u32 evmcs_read32(unsigned long field)
+{
+	int offset = get_evmcs_offset(field, NULL);
+
+	if (offset < 0)
+		return 0;
+
+	return *(u32 *)((char *)current_evmcs + offset);
+}
+
+static inline u16 evmcs_read16(unsigned long field)
+{
+	int offset = get_evmcs_offset(field, NULL);
+
+	if (offset < 0)
+		return 0;
+
+	return *(u16 *)((char *)current_evmcs + offset);
+}
+
+static inline void evmcs_touch_msr_bitmap(void)
+{
+	if (unlikely(!current_evmcs))
+		return;
+
+	if (current_evmcs->hv_enlightenments_control.msr_bitmap)
+		current_evmcs->hv_clean_fields &=
+			~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;
+}
+
+static inline void evmcs_load(u64 phys_addr)
+{
+	struct hv_vp_assist_page *vp_ap =
+		hv_get_vp_assist_page(smp_processor_id());
+
+	vp_ap->current_nested_vmcs = phys_addr;
+	vp_ap->enlighten_vmentry = 1;
+}
+
+void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf);
+#else /* !IS_ENABLED(CONFIG_HYPERV) */
+static inline void evmcs_write64(unsigned long field, u64 value) {}
+static inline void evmcs_write32(unsigned long field, u32 value) {}
+static inline void evmcs_write16(unsigned long field, u16 value) {}
+static inline u64 evmcs_read64(unsigned long field) { return 0; }
+static inline u32 evmcs_read32(unsigned long field) { return 0; }
+static inline u16 evmcs_read16(unsigned long field) { return 0; }
+static inline void evmcs_load(u64 phys_addr) {}
+static inline void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf) {}
+static inline void evmcs_touch_msr_bitmap(void) {}
+#endif /* IS_ENABLED(CONFIG_HYPERV) */
+
+uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu);
+int nested_enable_evmcs(struct kvm_vcpu *vcpu,
+			uint16_t *vmcs_version);
+
+#endif /* __KVM_X86_VMX_EVMCS_H */
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
new file mode 100644
index 000000000000..3170e291215d
--- /dev/null
+++ b/arch/x86/kvm/vmx/nested.c
@@ -0,0 +1,5721 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/frame.h>
+#include <linux/percpu.h>
+
+#include <asm/debugreg.h>
+#include <asm/mmu_context.h>
+
+#include "cpuid.h"
+#include "hyperv.h"
+#include "mmu.h"
+#include "nested.h"
+#include "trace.h"
+#include "x86.h"
+
+static bool __read_mostly enable_shadow_vmcs = 1;
+module_param_named(enable_shadow_vmcs, enable_shadow_vmcs, bool, S_IRUGO);
+
+static bool __read_mostly nested_early_check = 0;
+module_param(nested_early_check, bool, S_IRUGO);
+
+/*
+ * Hyper-V requires all of these, so mark them as supported even though
+ * they are just treated the same as all-context.
+ */
+#define VMX_VPID_EXTENT_SUPPORTED_MASK		\
+	(VMX_VPID_EXTENT_INDIVIDUAL_ADDR_BIT |	\
+	VMX_VPID_EXTENT_SINGLE_CONTEXT_BIT |	\
+	VMX_VPID_EXTENT_GLOBAL_CONTEXT_BIT |	\
+	VMX_VPID_EXTENT_SINGLE_NON_GLOBAL_BIT)
+
+#define VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE 5
+
+enum {
+	VMX_VMREAD_BITMAP,
+	VMX_VMWRITE_BITMAP,
+	VMX_BITMAP_NR
+};
+static unsigned long *vmx_bitmap[VMX_BITMAP_NR];
+
+#define vmx_vmread_bitmap                    (vmx_bitmap[VMX_VMREAD_BITMAP])
+#define vmx_vmwrite_bitmap                   (vmx_bitmap[VMX_VMWRITE_BITMAP])
+
+static u16 shadow_read_only_fields[] = {
+#define SHADOW_FIELD_RO(x) x,
+#include "vmcs_shadow_fields.h"
+};
+static int max_shadow_read_only_fields =
+	ARRAY_SIZE(shadow_read_only_fields);
+
+static u16 shadow_read_write_fields[] = {
+#define SHADOW_FIELD_RW(x) x,
+#include "vmcs_shadow_fields.h"
+};
+static int max_shadow_read_write_fields =
+	ARRAY_SIZE(shadow_read_write_fields);
+
+void init_vmcs_shadow_fields(void)
+{
+	int i, j;
+
+	memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE);
+	memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE);
+
+	for (i = j = 0; i < max_shadow_read_only_fields; i++) {
+		u16 field = shadow_read_only_fields[i];
+
+		if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
+		    (i + 1 == max_shadow_read_only_fields ||
+		     shadow_read_only_fields[i + 1] != field + 1))
+			pr_err("Missing field from shadow_read_only_field %x\n",
+			       field + 1);
+
+		clear_bit(field, vmx_vmread_bitmap);
+#ifdef CONFIG_X86_64
+		if (field & 1)
+			continue;
+#endif
+		if (j < i)
+			shadow_read_only_fields[j] = field;
+		j++;
+	}
+	max_shadow_read_only_fields = j;
+
+	for (i = j = 0; i < max_shadow_read_write_fields; i++) {
+		u16 field = shadow_read_write_fields[i];
+
+		if (vmcs_field_width(field) == VMCS_FIELD_WIDTH_U64 &&
+		    (i + 1 == max_shadow_read_write_fields ||
+		     shadow_read_write_fields[i + 1] != field + 1))
+			pr_err("Missing field from shadow_read_write_field %x\n",
+			       field + 1);
+
+		/*
+		 * PML and the preemption timer can be emulated, but the
+		 * processor cannot vmwrite to fields that don't exist
+		 * on bare metal.
+		 */
+		switch (field) {
+		case GUEST_PML_INDEX:
+			if (!cpu_has_vmx_pml())
+				continue;
+			break;
+		case VMX_PREEMPTION_TIMER_VALUE:
+			if (!cpu_has_vmx_preemption_timer())
+				continue;
+			break;
+		case GUEST_INTR_STATUS:
+			if (!cpu_has_vmx_apicv())
+				continue;
+			break;
+		default:
+			break;
+		}
+
+		clear_bit(field, vmx_vmwrite_bitmap);
+		clear_bit(field, vmx_vmread_bitmap);
+#ifdef CONFIG_X86_64
+		if (field & 1)
+			continue;
+#endif
+		if (j < i)
+			shadow_read_write_fields[j] = field;
+		j++;
+	}
+	max_shadow_read_write_fields = j;
+}
+
+/*
+ * The following 3 functions, nested_vmx_succeed()/failValid()/failInvalid(),
+ * set the success or error code of an emulated VMX instruction (as specified
+ * by Vol 2B, VMX Instruction Reference, "Conventions"), and skip the emulated
+ * instruction.
+ */
+static int nested_vmx_succeed(struct kvm_vcpu *vcpu)
+{
+	vmx_set_rflags(vcpu, vmx_get_rflags(vcpu)
+			& ~(X86_EFLAGS_CF | X86_EFLAGS_PF | X86_EFLAGS_AF |
+			    X86_EFLAGS_ZF | X86_EFLAGS_SF | X86_EFLAGS_OF));
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int nested_vmx_failInvalid(struct kvm_vcpu *vcpu)
+{
+	vmx_set_rflags(vcpu, (vmx_get_rflags(vcpu)
+			& ~(X86_EFLAGS_PF | X86_EFLAGS_AF | X86_EFLAGS_ZF |
+			    X86_EFLAGS_SF | X86_EFLAGS_OF))
+			| X86_EFLAGS_CF);
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int nested_vmx_failValid(struct kvm_vcpu *vcpu,
+				u32 vm_instruction_error)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * failValid writes the error number to the current VMCS, which
+	 * can't be done if there isn't a current VMCS.
+	 */
+	if (vmx->nested.current_vmptr == -1ull && !vmx->nested.hv_evmcs)
+		return nested_vmx_failInvalid(vcpu);
+
+	vmx_set_rflags(vcpu, (vmx_get_rflags(vcpu)
+			& ~(X86_EFLAGS_CF | X86_EFLAGS_PF | X86_EFLAGS_AF |
+			    X86_EFLAGS_SF | X86_EFLAGS_OF))
+			| X86_EFLAGS_ZF);
+	get_vmcs12(vcpu)->vm_instruction_error = vm_instruction_error;
+	/*
+	 * We don't need to force a shadow sync because
+	 * VM_INSTRUCTION_ERROR is not shadowed
+	 */
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static void nested_vmx_abort(struct kvm_vcpu *vcpu, u32 indicator)
+{
+	/* TODO: not to reset guest simply here. */
+	kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
+	pr_debug_ratelimited("kvm: nested vmx abort, indicator %d\n", indicator);
+}
+
+static void vmx_disable_shadow_vmcs(struct vcpu_vmx *vmx)
+{
+	vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_SHADOW_VMCS);
+	vmcs_write64(VMCS_LINK_POINTER, -1ull);
+}
+
+static inline void nested_release_evmcs(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!vmx->nested.hv_evmcs)
+		return;
+
+	kunmap(vmx->nested.hv_evmcs_page);
+	kvm_release_page_dirty(vmx->nested.hv_evmcs_page);
+	vmx->nested.hv_evmcs_vmptr = -1ull;
+	vmx->nested.hv_evmcs_page = NULL;
+	vmx->nested.hv_evmcs = NULL;
+}
+
+/*
+ * Free whatever needs to be freed from vmx->nested when L1 goes down, or
+ * just stops using VMX.
+ */
+static void free_nested(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!vmx->nested.vmxon && !vmx->nested.smm.vmxon)
+		return;
+
+	vmx->nested.vmxon = false;
+	vmx->nested.smm.vmxon = false;
+	free_vpid(vmx->nested.vpid02);
+	vmx->nested.posted_intr_nv = -1;
+	vmx->nested.current_vmptr = -1ull;
+	if (enable_shadow_vmcs) {
+		vmx_disable_shadow_vmcs(vmx);
+		vmcs_clear(vmx->vmcs01.shadow_vmcs);
+		free_vmcs(vmx->vmcs01.shadow_vmcs);
+		vmx->vmcs01.shadow_vmcs = NULL;
+	}
+	kfree(vmx->nested.cached_vmcs12);
+	kfree(vmx->nested.cached_shadow_vmcs12);
+	/* Unpin physical memory we referred to in the vmcs02 */
+	if (vmx->nested.apic_access_page) {
+		kvm_release_page_dirty(vmx->nested.apic_access_page);
+		vmx->nested.apic_access_page = NULL;
+	}
+	if (vmx->nested.virtual_apic_page) {
+		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
+		vmx->nested.virtual_apic_page = NULL;
+	}
+	if (vmx->nested.pi_desc_page) {
+		kunmap(vmx->nested.pi_desc_page);
+		kvm_release_page_dirty(vmx->nested.pi_desc_page);
+		vmx->nested.pi_desc_page = NULL;
+		vmx->nested.pi_desc = NULL;
+	}
+
+	kvm_mmu_free_roots(vcpu, &vcpu->arch.guest_mmu, KVM_MMU_ROOTS_ALL);
+
+	nested_release_evmcs(vcpu);
+
+	free_loaded_vmcs(&vmx->nested.vmcs02);
+}
+
+static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int cpu;
+
+	if (vmx->loaded_vmcs == vmcs)
+		return;
+
+	cpu = get_cpu();
+	vmx_vcpu_put(vcpu);
+	vmx->loaded_vmcs = vmcs;
+	vmx_vcpu_load(vcpu, cpu);
+	put_cpu();
+
+	vm_entry_controls_reset_shadow(vmx);
+	vm_exit_controls_reset_shadow(vmx);
+	vmx_segment_cache_clear(vmx);
+}
+
+/*
+ * Ensure that the current vmcs of the logical processor is the
+ * vmcs01 of the vcpu before calling free_nested().
+ */
+void nested_vmx_free_vcpu(struct kvm_vcpu *vcpu)
+{
+	vcpu_load(vcpu);
+	vmx_switch_vmcs(vcpu, &to_vmx(vcpu)->vmcs01);
+	free_nested(vcpu);
+	vcpu_put(vcpu);
+}
+
+static void nested_ept_inject_page_fault(struct kvm_vcpu *vcpu,
+		struct x86_exception *fault)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 exit_reason;
+	unsigned long exit_qualification = vcpu->arch.exit_qualification;
+
+	if (vmx->nested.pml_full) {
+		exit_reason = EXIT_REASON_PML_FULL;
+		vmx->nested.pml_full = false;
+		exit_qualification &= INTR_INFO_UNBLOCK_NMI;
+	} else if (fault->error_code & PFERR_RSVD_MASK)
+		exit_reason = EXIT_REASON_EPT_MISCONFIG;
+	else
+		exit_reason = EXIT_REASON_EPT_VIOLATION;
+
+	nested_vmx_vmexit(vcpu, exit_reason, 0, exit_qualification);
+	vmcs12->guest_physical_address = fault->address;
+}
+
+static void nested_ept_init_mmu_context(struct kvm_vcpu *vcpu)
+{
+	WARN_ON(mmu_is_nested(vcpu));
+
+	vcpu->arch.mmu = &vcpu->arch.guest_mmu;
+	kvm_init_shadow_ept_mmu(vcpu,
+			to_vmx(vcpu)->nested.msrs.ept_caps &
+			VMX_EPT_EXECUTE_ONLY_BIT,
+			nested_ept_ad_enabled(vcpu),
+			nested_ept_get_cr3(vcpu));
+	vcpu->arch.mmu->set_cr3           = vmx_set_cr3;
+	vcpu->arch.mmu->get_cr3           = nested_ept_get_cr3;
+	vcpu->arch.mmu->inject_page_fault = nested_ept_inject_page_fault;
+	vcpu->arch.mmu->get_pdptr         = kvm_pdptr_read;
+
+	vcpu->arch.walk_mmu              = &vcpu->arch.nested_mmu;
+}
+
+static void nested_ept_uninit_mmu_context(struct kvm_vcpu *vcpu)
+{
+	vcpu->arch.mmu = &vcpu->arch.root_mmu;
+	vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
+}
+
+static bool nested_vmx_is_page_fault_vmexit(struct vmcs12 *vmcs12,
+					    u16 error_code)
+{
+	bool inequality, bit;
+
+	bit = (vmcs12->exception_bitmap & (1u << PF_VECTOR)) != 0;
+	inequality =
+		(error_code & vmcs12->page_fault_error_code_mask) !=
+		 vmcs12->page_fault_error_code_match;
+	return inequality ^ bit;
+}
+
+
+/*
+ * KVM wants to inject page-faults which it got to the guest. This function
+ * checks whether in a nested guest, we need to inject them to L1 or L2.
+ */
+static int nested_vmx_check_exception(struct kvm_vcpu *vcpu, unsigned long *exit_qual)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	unsigned int nr = vcpu->arch.exception.nr;
+	bool has_payload = vcpu->arch.exception.has_payload;
+	unsigned long payload = vcpu->arch.exception.payload;
+
+	if (nr == PF_VECTOR) {
+		if (vcpu->arch.exception.nested_apf) {
+			*exit_qual = vcpu->arch.apf.nested_apf_token;
+			return 1;
+		}
+		if (nested_vmx_is_page_fault_vmexit(vmcs12,
+						    vcpu->arch.exception.error_code)) {
+			*exit_qual = has_payload ? payload : vcpu->arch.cr2;
+			return 1;
+		}
+	} else if (vmcs12->exception_bitmap & (1u << nr)) {
+		if (nr == DB_VECTOR) {
+			if (!has_payload) {
+				payload = vcpu->arch.dr6;
+				payload &= ~(DR6_FIXED_1 | DR6_BT);
+				payload ^= DR6_RTM;
+			}
+			*exit_qual = payload;
+		} else
+			*exit_qual = 0;
+		return 1;
+	}
+
+	return 0;
+}
+
+
+static void vmx_inject_page_fault_nested(struct kvm_vcpu *vcpu,
+		struct x86_exception *fault)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	WARN_ON(!is_guest_mode(vcpu));
+
+	if (nested_vmx_is_page_fault_vmexit(vmcs12, fault->error_code) &&
+		!to_vmx(vcpu)->nested.nested_run_pending) {
+		vmcs12->vm_exit_intr_error_code = fault->error_code;
+		nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
+				  PF_VECTOR | INTR_TYPE_HARD_EXCEPTION |
+				  INTR_INFO_DELIVER_CODE_MASK | INTR_INFO_VALID_MASK,
+				  fault->address);
+	} else {
+		kvm_inject_page_fault(vcpu, fault);
+	}
+}
+
+static bool page_address_valid(struct kvm_vcpu *vcpu, gpa_t gpa)
+{
+	return PAGE_ALIGNED(gpa) && !(gpa >> cpuid_maxphyaddr(vcpu));
+}
+
+static int nested_vmx_check_io_bitmap_controls(struct kvm_vcpu *vcpu,
+					       struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
+		return 0;
+
+	if (!page_address_valid(vcpu, vmcs12->io_bitmap_a) ||
+	    !page_address_valid(vcpu, vmcs12->io_bitmap_b))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_msr_bitmap_controls(struct kvm_vcpu *vcpu,
+						struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
+		return 0;
+
+	if (!page_address_valid(vcpu, vmcs12->msr_bitmap))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_tpr_shadow_controls(struct kvm_vcpu *vcpu,
+						struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
+		return 0;
+
+	if (!page_address_valid(vcpu, vmcs12->virtual_apic_page_addr))
+		return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * Check if MSR is intercepted for L01 MSR bitmap.
+ */
+static bool msr_write_intercepted_l01(struct kvm_vcpu *vcpu, u32 msr)
+{
+	unsigned long *msr_bitmap;
+	int f = sizeof(unsigned long);
+
+	if (!cpu_has_vmx_msr_bitmap())
+		return true;
+
+	msr_bitmap = to_vmx(vcpu)->vmcs01.msr_bitmap;
+
+	if (msr <= 0x1fff) {
+		return !!test_bit(msr, msr_bitmap + 0x800 / f);
+	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
+		msr &= 0x1fff;
+		return !!test_bit(msr, msr_bitmap + 0xc00 / f);
+	}
+
+	return true;
+}
+
+/*
+ * If a msr is allowed by L0, we should check whether it is allowed by L1.
+ * The corresponding bit will be cleared unless both of L0 and L1 allow it.
+ */
+static void nested_vmx_disable_intercept_for_msr(unsigned long *msr_bitmap_l1,
+					       unsigned long *msr_bitmap_nested,
+					       u32 msr, int type)
+{
+	int f = sizeof(unsigned long);
+
+	/*
+	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
+	 * have the write-low and read-high bitmap offsets the wrong way round.
+	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
+	 */
+	if (msr <= 0x1fff) {
+		if (type & MSR_TYPE_R &&
+		   !test_bit(msr, msr_bitmap_l1 + 0x000 / f))
+			/* read-low */
+			__clear_bit(msr, msr_bitmap_nested + 0x000 / f);
+
+		if (type & MSR_TYPE_W &&
+		   !test_bit(msr, msr_bitmap_l1 + 0x800 / f))
+			/* write-low */
+			__clear_bit(msr, msr_bitmap_nested + 0x800 / f);
+
+	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
+		msr &= 0x1fff;
+		if (type & MSR_TYPE_R &&
+		   !test_bit(msr, msr_bitmap_l1 + 0x400 / f))
+			/* read-high */
+			__clear_bit(msr, msr_bitmap_nested + 0x400 / f);
+
+		if (type & MSR_TYPE_W &&
+		   !test_bit(msr, msr_bitmap_l1 + 0xc00 / f))
+			/* write-high */
+			__clear_bit(msr, msr_bitmap_nested + 0xc00 / f);
+
+	}
+}
+
+/*
+ * Merge L0's and L1's MSR bitmap, return false to indicate that
+ * we do not use the hardware.
+ */
+static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
+						 struct vmcs12 *vmcs12)
+{
+	int msr;
+	struct page *page;
+	unsigned long *msr_bitmap_l1;
+	unsigned long *msr_bitmap_l0 = to_vmx(vcpu)->nested.vmcs02.msr_bitmap;
+	/*
+	 * pred_cmd & spec_ctrl are trying to verify two things:
+	 *
+	 * 1. L0 gave a permission to L1 to actually passthrough the MSR. This
+	 *    ensures that we do not accidentally generate an L02 MSR bitmap
+	 *    from the L12 MSR bitmap that is too permissive.
+	 * 2. That L1 or L2s have actually used the MSR. This avoids
+	 *    unnecessarily merging of the bitmap if the MSR is unused. This
+	 *    works properly because we only update the L01 MSR bitmap lazily.
+	 *    So even if L0 should pass L1 these MSRs, the L01 bitmap is only
+	 *    updated to reflect this when L1 (or its L2s) actually write to
+	 *    the MSR.
+	 */
+	bool pred_cmd = !msr_write_intercepted_l01(vcpu, MSR_IA32_PRED_CMD);
+	bool spec_ctrl = !msr_write_intercepted_l01(vcpu, MSR_IA32_SPEC_CTRL);
+
+	/* Nothing to do if the MSR bitmap is not in use.  */
+	if (!cpu_has_vmx_msr_bitmap() ||
+	    !nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
+		return false;
+
+	if (!nested_cpu_has_virt_x2apic_mode(vmcs12) &&
+	    !pred_cmd && !spec_ctrl)
+		return false;
+
+	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->msr_bitmap);
+	if (is_error_page(page))
+		return false;
+
+	msr_bitmap_l1 = (unsigned long *)kmap(page);
+	if (nested_cpu_has_apic_reg_virt(vmcs12)) {
+		/*
+		 * L0 need not intercept reads for MSRs between 0x800 and 0x8ff, it
+		 * just lets the processor take the value from the virtual-APIC page;
+		 * take those 256 bits directly from the L1 bitmap.
+		 */
+		for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
+			unsigned word = msr / BITS_PER_LONG;
+			msr_bitmap_l0[word] = msr_bitmap_l1[word];
+			msr_bitmap_l0[word + (0x800 / sizeof(long))] = ~0;
+		}
+	} else {
+		for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
+			unsigned word = msr / BITS_PER_LONG;
+			msr_bitmap_l0[word] = ~0;
+			msr_bitmap_l0[word + (0x800 / sizeof(long))] = ~0;
+		}
+	}
+
+	nested_vmx_disable_intercept_for_msr(
+		msr_bitmap_l1, msr_bitmap_l0,
+		X2APIC_MSR(APIC_TASKPRI),
+		MSR_TYPE_W);
+
+	if (nested_cpu_has_vid(vmcs12)) {
+		nested_vmx_disable_intercept_for_msr(
+			msr_bitmap_l1, msr_bitmap_l0,
+			X2APIC_MSR(APIC_EOI),
+			MSR_TYPE_W);
+		nested_vmx_disable_intercept_for_msr(
+			msr_bitmap_l1, msr_bitmap_l0,
+			X2APIC_MSR(APIC_SELF_IPI),
+			MSR_TYPE_W);
+	}
+
+	if (spec_ctrl)
+		nested_vmx_disable_intercept_for_msr(
+					msr_bitmap_l1, msr_bitmap_l0,
+					MSR_IA32_SPEC_CTRL,
+					MSR_TYPE_R | MSR_TYPE_W);
+
+	if (pred_cmd)
+		nested_vmx_disable_intercept_for_msr(
+					msr_bitmap_l1, msr_bitmap_l0,
+					MSR_IA32_PRED_CMD,
+					MSR_TYPE_W);
+
+	kunmap(page);
+	kvm_release_page_clean(page);
+
+	return true;
+}
+
+static void nested_cache_shadow_vmcs12(struct kvm_vcpu *vcpu,
+				       struct vmcs12 *vmcs12)
+{
+	struct vmcs12 *shadow;
+	struct page *page;
+
+	if (!nested_cpu_has_shadow_vmcs(vmcs12) ||
+	    vmcs12->vmcs_link_pointer == -1ull)
+		return;
+
+	shadow = get_shadow_vmcs12(vcpu);
+	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->vmcs_link_pointer);
+
+	memcpy(shadow, kmap(page), VMCS12_SIZE);
+
+	kunmap(page);
+	kvm_release_page_clean(page);
+}
+
+static void nested_flush_cached_shadow_vmcs12(struct kvm_vcpu *vcpu,
+					      struct vmcs12 *vmcs12)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!nested_cpu_has_shadow_vmcs(vmcs12) ||
+	    vmcs12->vmcs_link_pointer == -1ull)
+		return;
+
+	kvm_write_guest(vmx->vcpu.kvm, vmcs12->vmcs_link_pointer,
+			get_shadow_vmcs12(vcpu), VMCS12_SIZE);
+}
+
+/*
+ * In nested virtualization, check if L1 has set
+ * VM_EXIT_ACK_INTR_ON_EXIT
+ */
+static bool nested_exit_intr_ack_set(struct kvm_vcpu *vcpu)
+{
+	return get_vmcs12(vcpu)->vm_exit_controls &
+		VM_EXIT_ACK_INTR_ON_EXIT;
+}
+
+static bool nested_exit_on_nmi(struct kvm_vcpu *vcpu)
+{
+	return nested_cpu_has_nmi_exiting(get_vmcs12(vcpu));
+}
+
+static int nested_vmx_check_apic_access_controls(struct kvm_vcpu *vcpu,
+					  struct vmcs12 *vmcs12)
+{
+	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES) &&
+	    !page_address_valid(vcpu, vmcs12->apic_access_addr))
+		return -EINVAL;
+	else
+		return 0;
+}
+
+static int nested_vmx_check_apicv_controls(struct kvm_vcpu *vcpu,
+					   struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has_virt_x2apic_mode(vmcs12) &&
+	    !nested_cpu_has_apic_reg_virt(vmcs12) &&
+	    !nested_cpu_has_vid(vmcs12) &&
+	    !nested_cpu_has_posted_intr(vmcs12))
+		return 0;
+
+	/*
+	 * If virtualize x2apic mode is enabled,
+	 * virtualize apic access must be disabled.
+	 */
+	if (nested_cpu_has_virt_x2apic_mode(vmcs12) &&
+	    nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
+		return -EINVAL;
+
+	/*
+	 * If virtual interrupt delivery is enabled,
+	 * we must exit on external interrupts.
+	 */
+	if (nested_cpu_has_vid(vmcs12) &&
+	   !nested_exit_on_intr(vcpu))
+		return -EINVAL;
+
+	/*
+	 * bits 15:8 should be zero in posted_intr_nv,
+	 * the descriptor address has been already checked
+	 * in nested_get_vmcs12_pages.
+	 *
+	 * bits 5:0 of posted_intr_desc_addr should be zero.
+	 */
+	if (nested_cpu_has_posted_intr(vmcs12) &&
+	   (!nested_cpu_has_vid(vmcs12) ||
+	    !nested_exit_intr_ack_set(vcpu) ||
+	    (vmcs12->posted_intr_nv & 0xff00) ||
+	    (vmcs12->posted_intr_desc_addr & 0x3f) ||
+	    (vmcs12->posted_intr_desc_addr >> cpuid_maxphyaddr(vcpu))))
+		return -EINVAL;
+
+	/* tpr shadow is needed by all apicv features. */
+	if (!nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_msr_switch(struct kvm_vcpu *vcpu,
+				       u32 count, u64 addr)
+{
+	int maxphyaddr;
+
+	if (count == 0)
+		return 0;
+	maxphyaddr = cpuid_maxphyaddr(vcpu);
+	if (!IS_ALIGNED(addr, 16) || addr >> maxphyaddr ||
+	    (addr + count * sizeof(struct vmx_msr_entry) - 1) >> maxphyaddr)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_exit_msr_switch_controls(struct kvm_vcpu *vcpu,
+						     struct vmcs12 *vmcs12)
+{
+	if (nested_vmx_check_msr_switch(vcpu, vmcs12->vm_exit_msr_load_count,
+					vmcs12->vm_exit_msr_load_addr) ||
+	    nested_vmx_check_msr_switch(vcpu, vmcs12->vm_exit_msr_store_count,
+					vmcs12->vm_exit_msr_store_addr))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_entry_msr_switch_controls(struct kvm_vcpu *vcpu,
+                                                      struct vmcs12 *vmcs12)
+{
+	if (nested_vmx_check_msr_switch(vcpu, vmcs12->vm_entry_msr_load_count,
+                                        vmcs12->vm_entry_msr_load_addr))
+                return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_pml_controls(struct kvm_vcpu *vcpu,
+					 struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has_pml(vmcs12))
+		return 0;
+
+	if (!nested_cpu_has_ept(vmcs12) ||
+	    !page_address_valid(vcpu, vmcs12->pml_address))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_unrestricted_guest_controls(struct kvm_vcpu *vcpu,
+							struct vmcs12 *vmcs12)
+{
+	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_UNRESTRICTED_GUEST) &&
+	    !nested_cpu_has_ept(vmcs12))
+		return -EINVAL;
+	return 0;
+}
+
+static int nested_vmx_check_mode_based_ept_exec_controls(struct kvm_vcpu *vcpu,
+							 struct vmcs12 *vmcs12)
+{
+	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_MODE_BASED_EPT_EXEC) &&
+	    !nested_cpu_has_ept(vmcs12))
+		return -EINVAL;
+	return 0;
+}
+
+static int nested_vmx_check_shadow_vmcs_controls(struct kvm_vcpu *vcpu,
+						 struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has_shadow_vmcs(vmcs12))
+		return 0;
+
+	if (!page_address_valid(vcpu, vmcs12->vmread_bitmap) ||
+	    !page_address_valid(vcpu, vmcs12->vmwrite_bitmap))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_msr_check_common(struct kvm_vcpu *vcpu,
+				       struct vmx_msr_entry *e)
+{
+	/* x2APIC MSR accesses are not allowed */
+	if (vcpu->arch.apic_base & X2APIC_ENABLE && e->index >> 8 == 0x8)
+		return -EINVAL;
+	if (e->index == MSR_IA32_UCODE_WRITE || /* SDM Table 35-2 */
+	    e->index == MSR_IA32_UCODE_REV)
+		return -EINVAL;
+	if (e->reserved != 0)
+		return -EINVAL;
+	return 0;
+}
+
+static int nested_vmx_load_msr_check(struct kvm_vcpu *vcpu,
+				     struct vmx_msr_entry *e)
+{
+	if (e->index == MSR_FS_BASE ||
+	    e->index == MSR_GS_BASE ||
+	    e->index == MSR_IA32_SMM_MONITOR_CTL || /* SMM is not supported */
+	    nested_vmx_msr_check_common(vcpu, e))
+		return -EINVAL;
+	return 0;
+}
+
+static int nested_vmx_store_msr_check(struct kvm_vcpu *vcpu,
+				      struct vmx_msr_entry *e)
+{
+	if (e->index == MSR_IA32_SMBASE || /* SMM is not supported */
+	    nested_vmx_msr_check_common(vcpu, e))
+		return -EINVAL;
+	return 0;
+}
+
+/*
+ * Load guest's/host's msr at nested entry/exit.
+ * return 0 for success, entry index for failure.
+ */
+static u32 nested_vmx_load_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
+{
+	u32 i;
+	struct vmx_msr_entry e;
+	struct msr_data msr;
+
+	msr.host_initiated = false;
+	for (i = 0; i < count; i++) {
+		if (kvm_vcpu_read_guest(vcpu, gpa + i * sizeof(e),
+					&e, sizeof(e))) {
+			pr_debug_ratelimited(
+				"%s cannot read MSR entry (%u, 0x%08llx)\n",
+				__func__, i, gpa + i * sizeof(e));
+			goto fail;
+		}
+		if (nested_vmx_load_msr_check(vcpu, &e)) {
+			pr_debug_ratelimited(
+				"%s check failed (%u, 0x%x, 0x%x)\n",
+				__func__, i, e.index, e.reserved);
+			goto fail;
+		}
+		msr.index = e.index;
+		msr.data = e.value;
+		if (kvm_set_msr(vcpu, &msr)) {
+			pr_debug_ratelimited(
+				"%s cannot write MSR (%u, 0x%x, 0x%llx)\n",
+				__func__, i, e.index, e.value);
+			goto fail;
+		}
+	}
+	return 0;
+fail:
+	return i + 1;
+}
+
+static int nested_vmx_store_msr(struct kvm_vcpu *vcpu, u64 gpa, u32 count)
+{
+	u32 i;
+	struct vmx_msr_entry e;
+
+	for (i = 0; i < count; i++) {
+		struct msr_data msr_info;
+		if (kvm_vcpu_read_guest(vcpu,
+					gpa + i * sizeof(e),
+					&e, 2 * sizeof(u32))) {
+			pr_debug_ratelimited(
+				"%s cannot read MSR entry (%u, 0x%08llx)\n",
+				__func__, i, gpa + i * sizeof(e));
+			return -EINVAL;
+		}
+		if (nested_vmx_store_msr_check(vcpu, &e)) {
+			pr_debug_ratelimited(
+				"%s check failed (%u, 0x%x, 0x%x)\n",
+				__func__, i, e.index, e.reserved);
+			return -EINVAL;
+		}
+		msr_info.host_initiated = false;
+		msr_info.index = e.index;
+		if (kvm_get_msr(vcpu, &msr_info)) {
+			pr_debug_ratelimited(
+				"%s cannot read MSR (%u, 0x%x)\n",
+				__func__, i, e.index);
+			return -EINVAL;
+		}
+		if (kvm_vcpu_write_guest(vcpu,
+					 gpa + i * sizeof(e) +
+					     offsetof(struct vmx_msr_entry, value),
+					 &msr_info.data, sizeof(msr_info.data))) {
+			pr_debug_ratelimited(
+				"%s cannot write MSR (%u, 0x%x, 0x%llx)\n",
+				__func__, i, e.index, msr_info.data);
+			return -EINVAL;
+		}
+	}
+	return 0;
+}
+
+static bool nested_cr3_valid(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	unsigned long invalid_mask;
+
+	invalid_mask = (~0ULL) << cpuid_maxphyaddr(vcpu);
+	return (val & invalid_mask) == 0;
+}
+
+/*
+ * Load guest's/host's cr3 at nested entry/exit. nested_ept is true if we are
+ * emulating VM entry into a guest with EPT enabled.
+ * Returns 0 on success, 1 on failure. Invalid state exit qualification code
+ * is assigned to entry_failure_code on failure.
+ */
+static int nested_vmx_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3, bool nested_ept,
+			       u32 *entry_failure_code)
+{
+	if (cr3 != kvm_read_cr3(vcpu) || (!nested_ept && pdptrs_changed(vcpu))) {
+		if (!nested_cr3_valid(vcpu, cr3)) {
+			*entry_failure_code = ENTRY_FAIL_DEFAULT;
+			return 1;
+		}
+
+		/*
+		 * If PAE paging and EPT are both on, CR3 is not used by the CPU and
+		 * must not be dereferenced.
+		 */
+		if (!is_long_mode(vcpu) && is_pae(vcpu) && is_paging(vcpu) &&
+		    !nested_ept) {
+			if (!load_pdptrs(vcpu, vcpu->arch.walk_mmu, cr3)) {
+				*entry_failure_code = ENTRY_FAIL_PDPTE;
+				return 1;
+			}
+		}
+	}
+
+	if (!nested_ept)
+		kvm_mmu_new_cr3(vcpu, cr3, false);
+
+	vcpu->arch.cr3 = cr3;
+	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
+
+	kvm_init_mmu(vcpu, false);
+
+	return 0;
+}
+
+/*
+ * Returns if KVM is able to config CPU to tag TLB entries
+ * populated by L2 differently than TLB entries populated
+ * by L1.
+ *
+ * If L1 uses EPT, then TLB entries are tagged with different EPTP.
+ *
+ * If L1 uses VPID and we allocated a vpid02, TLB entries are tagged
+ * with different VPID (L1 entries are tagged with vmx->vpid
+ * while L2 entries are tagged with vmx->nested.vpid02).
+ */
+static bool nested_has_guest_tlb_tag(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	return nested_cpu_has_ept(vmcs12) ||
+	       (nested_cpu_has_vpid(vmcs12) && to_vmx(vcpu)->nested.vpid02);
+}
+
+static u16 nested_get_vpid02(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	return vmx->nested.vpid02 ? vmx->nested.vpid02 : vmx->vpid;
+}
+
+
+static inline bool vmx_control_verify(u32 control, u32 low, u32 high)
+{
+	return fixed_bits_valid(control, low, high);
+}
+
+static inline u64 vmx_control_msr(u32 low, u32 high)
+{
+	return low | ((u64)high << 32);
+}
+
+static bool is_bitwise_subset(u64 superset, u64 subset, u64 mask)
+{
+	superset &= mask;
+	subset &= mask;
+
+	return (superset | subset) == superset;
+}
+
+static int vmx_restore_vmx_basic(struct vcpu_vmx *vmx, u64 data)
+{
+	const u64 feature_and_reserved =
+		/* feature (except bit 48; see below) */
+		BIT_ULL(49) | BIT_ULL(54) | BIT_ULL(55) |
+		/* reserved */
+		BIT_ULL(31) | GENMASK_ULL(47, 45) | GENMASK_ULL(63, 56);
+	u64 vmx_basic = vmx->nested.msrs.basic;
+
+	if (!is_bitwise_subset(vmx_basic, data, feature_and_reserved))
+		return -EINVAL;
+
+	/*
+	 * KVM does not emulate a version of VMX that constrains physical
+	 * addresses of VMX structures (e.g. VMCS) to 32-bits.
+	 */
+	if (data & BIT_ULL(48))
+		return -EINVAL;
+
+	if (vmx_basic_vmcs_revision_id(vmx_basic) !=
+	    vmx_basic_vmcs_revision_id(data))
+		return -EINVAL;
+
+	if (vmx_basic_vmcs_size(vmx_basic) > vmx_basic_vmcs_size(data))
+		return -EINVAL;
+
+	vmx->nested.msrs.basic = data;
+	return 0;
+}
+
+static int
+vmx_restore_control_msr(struct vcpu_vmx *vmx, u32 msr_index, u64 data)
+{
+	u64 supported;
+	u32 *lowp, *highp;
+
+	switch (msr_index) {
+	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
+		lowp = &vmx->nested.msrs.pinbased_ctls_low;
+		highp = &vmx->nested.msrs.pinbased_ctls_high;
+		break;
+	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
+		lowp = &vmx->nested.msrs.procbased_ctls_low;
+		highp = &vmx->nested.msrs.procbased_ctls_high;
+		break;
+	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
+		lowp = &vmx->nested.msrs.exit_ctls_low;
+		highp = &vmx->nested.msrs.exit_ctls_high;
+		break;
+	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
+		lowp = &vmx->nested.msrs.entry_ctls_low;
+		highp = &vmx->nested.msrs.entry_ctls_high;
+		break;
+	case MSR_IA32_VMX_PROCBASED_CTLS2:
+		lowp = &vmx->nested.msrs.secondary_ctls_low;
+		highp = &vmx->nested.msrs.secondary_ctls_high;
+		break;
+	default:
+		BUG();
+	}
+
+	supported = vmx_control_msr(*lowp, *highp);
+
+	/* Check must-be-1 bits are still 1. */
+	if (!is_bitwise_subset(data, supported, GENMASK_ULL(31, 0)))
+		return -EINVAL;
+
+	/* Check must-be-0 bits are still 0. */
+	if (!is_bitwise_subset(supported, data, GENMASK_ULL(63, 32)))
+		return -EINVAL;
+
+	*lowp = data;
+	*highp = data >> 32;
+	return 0;
+}
+
+static int vmx_restore_vmx_misc(struct vcpu_vmx *vmx, u64 data)
+{
+	const u64 feature_and_reserved_bits =
+		/* feature */
+		BIT_ULL(5) | GENMASK_ULL(8, 6) | BIT_ULL(14) | BIT_ULL(15) |
+		BIT_ULL(28) | BIT_ULL(29) | BIT_ULL(30) |
+		/* reserved */
+		GENMASK_ULL(13, 9) | BIT_ULL(31);
+	u64 vmx_misc;
+
+	vmx_misc = vmx_control_msr(vmx->nested.msrs.misc_low,
+				   vmx->nested.msrs.misc_high);
+
+	if (!is_bitwise_subset(vmx_misc, data, feature_and_reserved_bits))
+		return -EINVAL;
+
+	if ((vmx->nested.msrs.pinbased_ctls_high &
+	     PIN_BASED_VMX_PREEMPTION_TIMER) &&
+	    vmx_misc_preemption_timer_rate(data) !=
+	    vmx_misc_preemption_timer_rate(vmx_misc))
+		return -EINVAL;
+
+	if (vmx_misc_cr3_count(data) > vmx_misc_cr3_count(vmx_misc))
+		return -EINVAL;
+
+	if (vmx_misc_max_msr(data) > vmx_misc_max_msr(vmx_misc))
+		return -EINVAL;
+
+	if (vmx_misc_mseg_revid(data) != vmx_misc_mseg_revid(vmx_misc))
+		return -EINVAL;
+
+	vmx->nested.msrs.misc_low = data;
+	vmx->nested.msrs.misc_high = data >> 32;
+
+	/*
+	 * If L1 has read-only VM-exit information fields, use the
+	 * less permissive vmx_vmwrite_bitmap to specify write
+	 * permissions for the shadow VMCS.
+	 */
+	if (enable_shadow_vmcs && !nested_cpu_has_vmwrite_any_field(&vmx->vcpu))
+		vmcs_write64(VMWRITE_BITMAP, __pa(vmx_vmwrite_bitmap));
+
+	return 0;
+}
+
+static int vmx_restore_vmx_ept_vpid_cap(struct vcpu_vmx *vmx, u64 data)
+{
+	u64 vmx_ept_vpid_cap;
+
+	vmx_ept_vpid_cap = vmx_control_msr(vmx->nested.msrs.ept_caps,
+					   vmx->nested.msrs.vpid_caps);
+
+	/* Every bit is either reserved or a feature bit. */
+	if (!is_bitwise_subset(vmx_ept_vpid_cap, data, -1ULL))
+		return -EINVAL;
+
+	vmx->nested.msrs.ept_caps = data;
+	vmx->nested.msrs.vpid_caps = data >> 32;
+	return 0;
+}
+
+static int vmx_restore_fixed0_msr(struct vcpu_vmx *vmx, u32 msr_index, u64 data)
+{
+	u64 *msr;
+
+	switch (msr_index) {
+	case MSR_IA32_VMX_CR0_FIXED0:
+		msr = &vmx->nested.msrs.cr0_fixed0;
+		break;
+	case MSR_IA32_VMX_CR4_FIXED0:
+		msr = &vmx->nested.msrs.cr4_fixed0;
+		break;
+	default:
+		BUG();
+	}
+
+	/*
+	 * 1 bits (which indicates bits which "must-be-1" during VMX operation)
+	 * must be 1 in the restored value.
+	 */
+	if (!is_bitwise_subset(data, *msr, -1ULL))
+		return -EINVAL;
+
+	*msr = data;
+	return 0;
+}
+
+/*
+ * Called when userspace is restoring VMX MSRs.
+ *
+ * Returns 0 on success, non-0 otherwise.
+ */
+int vmx_set_vmx_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * Don't allow changes to the VMX capability MSRs while the vCPU
+	 * is in VMX operation.
+	 */
+	if (vmx->nested.vmxon)
+		return -EBUSY;
+
+	switch (msr_index) {
+	case MSR_IA32_VMX_BASIC:
+		return vmx_restore_vmx_basic(vmx, data);
+	case MSR_IA32_VMX_PINBASED_CTLS:
+	case MSR_IA32_VMX_PROCBASED_CTLS:
+	case MSR_IA32_VMX_EXIT_CTLS:
+	case MSR_IA32_VMX_ENTRY_CTLS:
+		/*
+		 * The "non-true" VMX capability MSRs are generated from the
+		 * "true" MSRs, so we do not support restoring them directly.
+		 *
+		 * If userspace wants to emulate VMX_BASIC[55]=0, userspace
+		 * should restore the "true" MSRs with the must-be-1 bits
+		 * set according to the SDM Vol 3. A.2 "RESERVED CONTROLS AND
+		 * DEFAULT SETTINGS".
+		 */
+		return -EINVAL;
+	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
+	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
+	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
+	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
+	case MSR_IA32_VMX_PROCBASED_CTLS2:
+		return vmx_restore_control_msr(vmx, msr_index, data);
+	case MSR_IA32_VMX_MISC:
+		return vmx_restore_vmx_misc(vmx, data);
+	case MSR_IA32_VMX_CR0_FIXED0:
+	case MSR_IA32_VMX_CR4_FIXED0:
+		return vmx_restore_fixed0_msr(vmx, msr_index, data);
+	case MSR_IA32_VMX_CR0_FIXED1:
+	case MSR_IA32_VMX_CR4_FIXED1:
+		/*
+		 * These MSRs are generated based on the vCPU's CPUID, so we
+		 * do not support restoring them directly.
+		 */
+		return -EINVAL;
+	case MSR_IA32_VMX_EPT_VPID_CAP:
+		return vmx_restore_vmx_ept_vpid_cap(vmx, data);
+	case MSR_IA32_VMX_VMCS_ENUM:
+		vmx->nested.msrs.vmcs_enum = data;
+		return 0;
+	default:
+		/*
+		 * The rest of the VMX capability MSRs do not support restore.
+		 */
+		return -EINVAL;
+	}
+}
+
+/* Returns 0 on success, non-0 otherwise. */
+int vmx_get_vmx_msr(struct nested_vmx_msrs *msrs, u32 msr_index, u64 *pdata)
+{
+	switch (msr_index) {
+	case MSR_IA32_VMX_BASIC:
+		*pdata = msrs->basic;
+		break;
+	case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
+	case MSR_IA32_VMX_PINBASED_CTLS:
+		*pdata = vmx_control_msr(
+			msrs->pinbased_ctls_low,
+			msrs->pinbased_ctls_high);
+		if (msr_index == MSR_IA32_VMX_PINBASED_CTLS)
+			*pdata |= PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
+		break;
+	case MSR_IA32_VMX_TRUE_PROCBASED_CTLS:
+	case MSR_IA32_VMX_PROCBASED_CTLS:
+		*pdata = vmx_control_msr(
+			msrs->procbased_ctls_low,
+			msrs->procbased_ctls_high);
+		if (msr_index == MSR_IA32_VMX_PROCBASED_CTLS)
+			*pdata |= CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
+		break;
+	case MSR_IA32_VMX_TRUE_EXIT_CTLS:
+	case MSR_IA32_VMX_EXIT_CTLS:
+		*pdata = vmx_control_msr(
+			msrs->exit_ctls_low,
+			msrs->exit_ctls_high);
+		if (msr_index == MSR_IA32_VMX_EXIT_CTLS)
+			*pdata |= VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR;
+		break;
+	case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
+	case MSR_IA32_VMX_ENTRY_CTLS:
+		*pdata = vmx_control_msr(
+			msrs->entry_ctls_low,
+			msrs->entry_ctls_high);
+		if (msr_index == MSR_IA32_VMX_ENTRY_CTLS)
+			*pdata |= VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR;
+		break;
+	case MSR_IA32_VMX_MISC:
+		*pdata = vmx_control_msr(
+			msrs->misc_low,
+			msrs->misc_high);
+		break;
+	case MSR_IA32_VMX_CR0_FIXED0:
+		*pdata = msrs->cr0_fixed0;
+		break;
+	case MSR_IA32_VMX_CR0_FIXED1:
+		*pdata = msrs->cr0_fixed1;
+		break;
+	case MSR_IA32_VMX_CR4_FIXED0:
+		*pdata = msrs->cr4_fixed0;
+		break;
+	case MSR_IA32_VMX_CR4_FIXED1:
+		*pdata = msrs->cr4_fixed1;
+		break;
+	case MSR_IA32_VMX_VMCS_ENUM:
+		*pdata = msrs->vmcs_enum;
+		break;
+	case MSR_IA32_VMX_PROCBASED_CTLS2:
+		*pdata = vmx_control_msr(
+			msrs->secondary_ctls_low,
+			msrs->secondary_ctls_high);
+		break;
+	case MSR_IA32_VMX_EPT_VPID_CAP:
+		*pdata = msrs->ept_caps |
+			((u64)msrs->vpid_caps << 32);
+		break;
+	case MSR_IA32_VMX_VMFUNC:
+		*pdata = msrs->vmfunc_controls;
+		break;
+	default:
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * Copy the writable VMCS shadow fields back to the VMCS12, in case
+ * they have been modified by the L1 guest. Note that the "read-only"
+ * VM-exit information fields are actually writable if the vCPU is
+ * configured to support "VMWRITE to any supported field in the VMCS."
+ */
+static void copy_shadow_to_vmcs12(struct vcpu_vmx *vmx)
+{
+	const u16 *fields[] = {
+		shadow_read_write_fields,
+		shadow_read_only_fields
+	};
+	const int max_fields[] = {
+		max_shadow_read_write_fields,
+		max_shadow_read_only_fields
+	};
+	int i, q;
+	unsigned long field;
+	u64 field_value;
+	struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
+
+	preempt_disable();
+
+	vmcs_load(shadow_vmcs);
+
+	for (q = 0; q < ARRAY_SIZE(fields); q++) {
+		for (i = 0; i < max_fields[q]; i++) {
+			field = fields[q][i];
+			field_value = __vmcs_readl(field);
+			vmcs12_write_any(get_vmcs12(&vmx->vcpu), field, field_value);
+		}
+		/*
+		 * Skip the VM-exit information fields if they are read-only.
+		 */
+		if (!nested_cpu_has_vmwrite_any_field(&vmx->vcpu))
+			break;
+	}
+
+	vmcs_clear(shadow_vmcs);
+	vmcs_load(vmx->loaded_vmcs->vmcs);
+
+	preempt_enable();
+}
+
+static void copy_vmcs12_to_shadow(struct vcpu_vmx *vmx)
+{
+	const u16 *fields[] = {
+		shadow_read_write_fields,
+		shadow_read_only_fields
+	};
+	const int max_fields[] = {
+		max_shadow_read_write_fields,
+		max_shadow_read_only_fields
+	};
+	int i, q;
+	unsigned long field;
+	u64 field_value = 0;
+	struct vmcs *shadow_vmcs = vmx->vmcs01.shadow_vmcs;
+
+	vmcs_load(shadow_vmcs);
+
+	for (q = 0; q < ARRAY_SIZE(fields); q++) {
+		for (i = 0; i < max_fields[q]; i++) {
+			field = fields[q][i];
+			vmcs12_read_any(get_vmcs12(&vmx->vcpu), field, &field_value);
+			__vmcs_writel(field, field_value);
+		}
+	}
+
+	vmcs_clear(shadow_vmcs);
+	vmcs_load(vmx->loaded_vmcs->vmcs);
+}
+
+static int copy_enlightened_to_vmcs12(struct vcpu_vmx *vmx)
+{
+	struct vmcs12 *vmcs12 = vmx->nested.cached_vmcs12;
+	struct hv_enlightened_vmcs *evmcs = vmx->nested.hv_evmcs;
+
+	/* HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE */
+	vmcs12->tpr_threshold = evmcs->tpr_threshold;
+	vmcs12->guest_rip = evmcs->guest_rip;
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC))) {
+		vmcs12->guest_rsp = evmcs->guest_rsp;
+		vmcs12->guest_rflags = evmcs->guest_rflags;
+		vmcs12->guest_interruptibility_info =
+			evmcs->guest_interruptibility_info;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC))) {
+		vmcs12->cpu_based_vm_exec_control =
+			evmcs->cpu_based_vm_exec_control;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC))) {
+		vmcs12->exception_bitmap = evmcs->exception_bitmap;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY))) {
+		vmcs12->vm_entry_controls = evmcs->vm_entry_controls;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT))) {
+		vmcs12->vm_entry_intr_info_field =
+			evmcs->vm_entry_intr_info_field;
+		vmcs12->vm_entry_exception_error_code =
+			evmcs->vm_entry_exception_error_code;
+		vmcs12->vm_entry_instruction_len =
+			evmcs->vm_entry_instruction_len;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1))) {
+		vmcs12->host_ia32_pat = evmcs->host_ia32_pat;
+		vmcs12->host_ia32_efer = evmcs->host_ia32_efer;
+		vmcs12->host_cr0 = evmcs->host_cr0;
+		vmcs12->host_cr3 = evmcs->host_cr3;
+		vmcs12->host_cr4 = evmcs->host_cr4;
+		vmcs12->host_ia32_sysenter_esp = evmcs->host_ia32_sysenter_esp;
+		vmcs12->host_ia32_sysenter_eip = evmcs->host_ia32_sysenter_eip;
+		vmcs12->host_rip = evmcs->host_rip;
+		vmcs12->host_ia32_sysenter_cs = evmcs->host_ia32_sysenter_cs;
+		vmcs12->host_es_selector = evmcs->host_es_selector;
+		vmcs12->host_cs_selector = evmcs->host_cs_selector;
+		vmcs12->host_ss_selector = evmcs->host_ss_selector;
+		vmcs12->host_ds_selector = evmcs->host_ds_selector;
+		vmcs12->host_fs_selector = evmcs->host_fs_selector;
+		vmcs12->host_gs_selector = evmcs->host_gs_selector;
+		vmcs12->host_tr_selector = evmcs->host_tr_selector;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1))) {
+		vmcs12->pin_based_vm_exec_control =
+			evmcs->pin_based_vm_exec_control;
+		vmcs12->vm_exit_controls = evmcs->vm_exit_controls;
+		vmcs12->secondary_vm_exec_control =
+			evmcs->secondary_vm_exec_control;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP))) {
+		vmcs12->io_bitmap_a = evmcs->io_bitmap_a;
+		vmcs12->io_bitmap_b = evmcs->io_bitmap_b;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP))) {
+		vmcs12->msr_bitmap = evmcs->msr_bitmap;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2))) {
+		vmcs12->guest_es_base = evmcs->guest_es_base;
+		vmcs12->guest_cs_base = evmcs->guest_cs_base;
+		vmcs12->guest_ss_base = evmcs->guest_ss_base;
+		vmcs12->guest_ds_base = evmcs->guest_ds_base;
+		vmcs12->guest_fs_base = evmcs->guest_fs_base;
+		vmcs12->guest_gs_base = evmcs->guest_gs_base;
+		vmcs12->guest_ldtr_base = evmcs->guest_ldtr_base;
+		vmcs12->guest_tr_base = evmcs->guest_tr_base;
+		vmcs12->guest_gdtr_base = evmcs->guest_gdtr_base;
+		vmcs12->guest_idtr_base = evmcs->guest_idtr_base;
+		vmcs12->guest_es_limit = evmcs->guest_es_limit;
+		vmcs12->guest_cs_limit = evmcs->guest_cs_limit;
+		vmcs12->guest_ss_limit = evmcs->guest_ss_limit;
+		vmcs12->guest_ds_limit = evmcs->guest_ds_limit;
+		vmcs12->guest_fs_limit = evmcs->guest_fs_limit;
+		vmcs12->guest_gs_limit = evmcs->guest_gs_limit;
+		vmcs12->guest_ldtr_limit = evmcs->guest_ldtr_limit;
+		vmcs12->guest_tr_limit = evmcs->guest_tr_limit;
+		vmcs12->guest_gdtr_limit = evmcs->guest_gdtr_limit;
+		vmcs12->guest_idtr_limit = evmcs->guest_idtr_limit;
+		vmcs12->guest_es_ar_bytes = evmcs->guest_es_ar_bytes;
+		vmcs12->guest_cs_ar_bytes = evmcs->guest_cs_ar_bytes;
+		vmcs12->guest_ss_ar_bytes = evmcs->guest_ss_ar_bytes;
+		vmcs12->guest_ds_ar_bytes = evmcs->guest_ds_ar_bytes;
+		vmcs12->guest_fs_ar_bytes = evmcs->guest_fs_ar_bytes;
+		vmcs12->guest_gs_ar_bytes = evmcs->guest_gs_ar_bytes;
+		vmcs12->guest_ldtr_ar_bytes = evmcs->guest_ldtr_ar_bytes;
+		vmcs12->guest_tr_ar_bytes = evmcs->guest_tr_ar_bytes;
+		vmcs12->guest_es_selector = evmcs->guest_es_selector;
+		vmcs12->guest_cs_selector = evmcs->guest_cs_selector;
+		vmcs12->guest_ss_selector = evmcs->guest_ss_selector;
+		vmcs12->guest_ds_selector = evmcs->guest_ds_selector;
+		vmcs12->guest_fs_selector = evmcs->guest_fs_selector;
+		vmcs12->guest_gs_selector = evmcs->guest_gs_selector;
+		vmcs12->guest_ldtr_selector = evmcs->guest_ldtr_selector;
+		vmcs12->guest_tr_selector = evmcs->guest_tr_selector;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2))) {
+		vmcs12->tsc_offset = evmcs->tsc_offset;
+		vmcs12->virtual_apic_page_addr = evmcs->virtual_apic_page_addr;
+		vmcs12->xss_exit_bitmap = evmcs->xss_exit_bitmap;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR))) {
+		vmcs12->cr0_guest_host_mask = evmcs->cr0_guest_host_mask;
+		vmcs12->cr4_guest_host_mask = evmcs->cr4_guest_host_mask;
+		vmcs12->cr0_read_shadow = evmcs->cr0_read_shadow;
+		vmcs12->cr4_read_shadow = evmcs->cr4_read_shadow;
+		vmcs12->guest_cr0 = evmcs->guest_cr0;
+		vmcs12->guest_cr3 = evmcs->guest_cr3;
+		vmcs12->guest_cr4 = evmcs->guest_cr4;
+		vmcs12->guest_dr7 = evmcs->guest_dr7;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER))) {
+		vmcs12->host_fs_base = evmcs->host_fs_base;
+		vmcs12->host_gs_base = evmcs->host_gs_base;
+		vmcs12->host_tr_base = evmcs->host_tr_base;
+		vmcs12->host_gdtr_base = evmcs->host_gdtr_base;
+		vmcs12->host_idtr_base = evmcs->host_idtr_base;
+		vmcs12->host_rsp = evmcs->host_rsp;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT))) {
+		vmcs12->ept_pointer = evmcs->ept_pointer;
+		vmcs12->virtual_processor_id = evmcs->virtual_processor_id;
+	}
+
+	if (unlikely(!(evmcs->hv_clean_fields &
+		       HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1))) {
+		vmcs12->vmcs_link_pointer = evmcs->vmcs_link_pointer;
+		vmcs12->guest_ia32_debugctl = evmcs->guest_ia32_debugctl;
+		vmcs12->guest_ia32_pat = evmcs->guest_ia32_pat;
+		vmcs12->guest_ia32_efer = evmcs->guest_ia32_efer;
+		vmcs12->guest_pdptr0 = evmcs->guest_pdptr0;
+		vmcs12->guest_pdptr1 = evmcs->guest_pdptr1;
+		vmcs12->guest_pdptr2 = evmcs->guest_pdptr2;
+		vmcs12->guest_pdptr3 = evmcs->guest_pdptr3;
+		vmcs12->guest_pending_dbg_exceptions =
+			evmcs->guest_pending_dbg_exceptions;
+		vmcs12->guest_sysenter_esp = evmcs->guest_sysenter_esp;
+		vmcs12->guest_sysenter_eip = evmcs->guest_sysenter_eip;
+		vmcs12->guest_bndcfgs = evmcs->guest_bndcfgs;
+		vmcs12->guest_activity_state = evmcs->guest_activity_state;
+		vmcs12->guest_sysenter_cs = evmcs->guest_sysenter_cs;
+	}
+
+	/*
+	 * Not used?
+	 * vmcs12->vm_exit_msr_store_addr = evmcs->vm_exit_msr_store_addr;
+	 * vmcs12->vm_exit_msr_load_addr = evmcs->vm_exit_msr_load_addr;
+	 * vmcs12->vm_entry_msr_load_addr = evmcs->vm_entry_msr_load_addr;
+	 * vmcs12->cr3_target_value0 = evmcs->cr3_target_value0;
+	 * vmcs12->cr3_target_value1 = evmcs->cr3_target_value1;
+	 * vmcs12->cr3_target_value2 = evmcs->cr3_target_value2;
+	 * vmcs12->cr3_target_value3 = evmcs->cr3_target_value3;
+	 * vmcs12->page_fault_error_code_mask =
+	 *		evmcs->page_fault_error_code_mask;
+	 * vmcs12->page_fault_error_code_match =
+	 *		evmcs->page_fault_error_code_match;
+	 * vmcs12->cr3_target_count = evmcs->cr3_target_count;
+	 * vmcs12->vm_exit_msr_store_count = evmcs->vm_exit_msr_store_count;
+	 * vmcs12->vm_exit_msr_load_count = evmcs->vm_exit_msr_load_count;
+	 * vmcs12->vm_entry_msr_load_count = evmcs->vm_entry_msr_load_count;
+	 */
+
+	/*
+	 * Read only fields:
+	 * vmcs12->guest_physical_address = evmcs->guest_physical_address;
+	 * vmcs12->vm_instruction_error = evmcs->vm_instruction_error;
+	 * vmcs12->vm_exit_reason = evmcs->vm_exit_reason;
+	 * vmcs12->vm_exit_intr_info = evmcs->vm_exit_intr_info;
+	 * vmcs12->vm_exit_intr_error_code = evmcs->vm_exit_intr_error_code;
+	 * vmcs12->idt_vectoring_info_field = evmcs->idt_vectoring_info_field;
+	 * vmcs12->idt_vectoring_error_code = evmcs->idt_vectoring_error_code;
+	 * vmcs12->vm_exit_instruction_len = evmcs->vm_exit_instruction_len;
+	 * vmcs12->vmx_instruction_info = evmcs->vmx_instruction_info;
+	 * vmcs12->exit_qualification = evmcs->exit_qualification;
+	 * vmcs12->guest_linear_address = evmcs->guest_linear_address;
+	 *
+	 * Not present in struct vmcs12:
+	 * vmcs12->exit_io_instruction_ecx = evmcs->exit_io_instruction_ecx;
+	 * vmcs12->exit_io_instruction_esi = evmcs->exit_io_instruction_esi;
+	 * vmcs12->exit_io_instruction_edi = evmcs->exit_io_instruction_edi;
+	 * vmcs12->exit_io_instruction_eip = evmcs->exit_io_instruction_eip;
+	 */
+
+	return 0;
+}
+
+static int copy_vmcs12_to_enlightened(struct vcpu_vmx *vmx)
+{
+	struct vmcs12 *vmcs12 = vmx->nested.cached_vmcs12;
+	struct hv_enlightened_vmcs *evmcs = vmx->nested.hv_evmcs;
+
+	/*
+	 * Should not be changed by KVM:
+	 *
+	 * evmcs->host_es_selector = vmcs12->host_es_selector;
+	 * evmcs->host_cs_selector = vmcs12->host_cs_selector;
+	 * evmcs->host_ss_selector = vmcs12->host_ss_selector;
+	 * evmcs->host_ds_selector = vmcs12->host_ds_selector;
+	 * evmcs->host_fs_selector = vmcs12->host_fs_selector;
+	 * evmcs->host_gs_selector = vmcs12->host_gs_selector;
+	 * evmcs->host_tr_selector = vmcs12->host_tr_selector;
+	 * evmcs->host_ia32_pat = vmcs12->host_ia32_pat;
+	 * evmcs->host_ia32_efer = vmcs12->host_ia32_efer;
+	 * evmcs->host_cr0 = vmcs12->host_cr0;
+	 * evmcs->host_cr3 = vmcs12->host_cr3;
+	 * evmcs->host_cr4 = vmcs12->host_cr4;
+	 * evmcs->host_ia32_sysenter_esp = vmcs12->host_ia32_sysenter_esp;
+	 * evmcs->host_ia32_sysenter_eip = vmcs12->host_ia32_sysenter_eip;
+	 * evmcs->host_rip = vmcs12->host_rip;
+	 * evmcs->host_ia32_sysenter_cs = vmcs12->host_ia32_sysenter_cs;
+	 * evmcs->host_fs_base = vmcs12->host_fs_base;
+	 * evmcs->host_gs_base = vmcs12->host_gs_base;
+	 * evmcs->host_tr_base = vmcs12->host_tr_base;
+	 * evmcs->host_gdtr_base = vmcs12->host_gdtr_base;
+	 * evmcs->host_idtr_base = vmcs12->host_idtr_base;
+	 * evmcs->host_rsp = vmcs12->host_rsp;
+	 * sync_vmcs12() doesn't read these:
+	 * evmcs->io_bitmap_a = vmcs12->io_bitmap_a;
+	 * evmcs->io_bitmap_b = vmcs12->io_bitmap_b;
+	 * evmcs->msr_bitmap = vmcs12->msr_bitmap;
+	 * evmcs->ept_pointer = vmcs12->ept_pointer;
+	 * evmcs->xss_exit_bitmap = vmcs12->xss_exit_bitmap;
+	 * evmcs->vm_exit_msr_store_addr = vmcs12->vm_exit_msr_store_addr;
+	 * evmcs->vm_exit_msr_load_addr = vmcs12->vm_exit_msr_load_addr;
+	 * evmcs->vm_entry_msr_load_addr = vmcs12->vm_entry_msr_load_addr;
+	 * evmcs->cr3_target_value0 = vmcs12->cr3_target_value0;
+	 * evmcs->cr3_target_value1 = vmcs12->cr3_target_value1;
+	 * evmcs->cr3_target_value2 = vmcs12->cr3_target_value2;
+	 * evmcs->cr3_target_value3 = vmcs12->cr3_target_value3;
+	 * evmcs->tpr_threshold = vmcs12->tpr_threshold;
+	 * evmcs->virtual_processor_id = vmcs12->virtual_processor_id;
+	 * evmcs->exception_bitmap = vmcs12->exception_bitmap;
+	 * evmcs->vmcs_link_pointer = vmcs12->vmcs_link_pointer;
+	 * evmcs->pin_based_vm_exec_control = vmcs12->pin_based_vm_exec_control;
+	 * evmcs->vm_exit_controls = vmcs12->vm_exit_controls;
+	 * evmcs->secondary_vm_exec_control = vmcs12->secondary_vm_exec_control;
+	 * evmcs->page_fault_error_code_mask =
+	 *		vmcs12->page_fault_error_code_mask;
+	 * evmcs->page_fault_error_code_match =
+	 *		vmcs12->page_fault_error_code_match;
+	 * evmcs->cr3_target_count = vmcs12->cr3_target_count;
+	 * evmcs->virtual_apic_page_addr = vmcs12->virtual_apic_page_addr;
+	 * evmcs->tsc_offset = vmcs12->tsc_offset;
+	 * evmcs->guest_ia32_debugctl = vmcs12->guest_ia32_debugctl;
+	 * evmcs->cr0_guest_host_mask = vmcs12->cr0_guest_host_mask;
+	 * evmcs->cr4_guest_host_mask = vmcs12->cr4_guest_host_mask;
+	 * evmcs->cr0_read_shadow = vmcs12->cr0_read_shadow;
+	 * evmcs->cr4_read_shadow = vmcs12->cr4_read_shadow;
+	 * evmcs->vm_exit_msr_store_count = vmcs12->vm_exit_msr_store_count;
+	 * evmcs->vm_exit_msr_load_count = vmcs12->vm_exit_msr_load_count;
+	 * evmcs->vm_entry_msr_load_count = vmcs12->vm_entry_msr_load_count;
+	 *
+	 * Not present in struct vmcs12:
+	 * evmcs->exit_io_instruction_ecx = vmcs12->exit_io_instruction_ecx;
+	 * evmcs->exit_io_instruction_esi = vmcs12->exit_io_instruction_esi;
+	 * evmcs->exit_io_instruction_edi = vmcs12->exit_io_instruction_edi;
+	 * evmcs->exit_io_instruction_eip = vmcs12->exit_io_instruction_eip;
+	 */
+
+	evmcs->guest_es_selector = vmcs12->guest_es_selector;
+	evmcs->guest_cs_selector = vmcs12->guest_cs_selector;
+	evmcs->guest_ss_selector = vmcs12->guest_ss_selector;
+	evmcs->guest_ds_selector = vmcs12->guest_ds_selector;
+	evmcs->guest_fs_selector = vmcs12->guest_fs_selector;
+	evmcs->guest_gs_selector = vmcs12->guest_gs_selector;
+	evmcs->guest_ldtr_selector = vmcs12->guest_ldtr_selector;
+	evmcs->guest_tr_selector = vmcs12->guest_tr_selector;
+
+	evmcs->guest_es_limit = vmcs12->guest_es_limit;
+	evmcs->guest_cs_limit = vmcs12->guest_cs_limit;
+	evmcs->guest_ss_limit = vmcs12->guest_ss_limit;
+	evmcs->guest_ds_limit = vmcs12->guest_ds_limit;
+	evmcs->guest_fs_limit = vmcs12->guest_fs_limit;
+	evmcs->guest_gs_limit = vmcs12->guest_gs_limit;
+	evmcs->guest_ldtr_limit = vmcs12->guest_ldtr_limit;
+	evmcs->guest_tr_limit = vmcs12->guest_tr_limit;
+	evmcs->guest_gdtr_limit = vmcs12->guest_gdtr_limit;
+	evmcs->guest_idtr_limit = vmcs12->guest_idtr_limit;
+
+	evmcs->guest_es_ar_bytes = vmcs12->guest_es_ar_bytes;
+	evmcs->guest_cs_ar_bytes = vmcs12->guest_cs_ar_bytes;
+	evmcs->guest_ss_ar_bytes = vmcs12->guest_ss_ar_bytes;
+	evmcs->guest_ds_ar_bytes = vmcs12->guest_ds_ar_bytes;
+	evmcs->guest_fs_ar_bytes = vmcs12->guest_fs_ar_bytes;
+	evmcs->guest_gs_ar_bytes = vmcs12->guest_gs_ar_bytes;
+	evmcs->guest_ldtr_ar_bytes = vmcs12->guest_ldtr_ar_bytes;
+	evmcs->guest_tr_ar_bytes = vmcs12->guest_tr_ar_bytes;
+
+	evmcs->guest_es_base = vmcs12->guest_es_base;
+	evmcs->guest_cs_base = vmcs12->guest_cs_base;
+	evmcs->guest_ss_base = vmcs12->guest_ss_base;
+	evmcs->guest_ds_base = vmcs12->guest_ds_base;
+	evmcs->guest_fs_base = vmcs12->guest_fs_base;
+	evmcs->guest_gs_base = vmcs12->guest_gs_base;
+	evmcs->guest_ldtr_base = vmcs12->guest_ldtr_base;
+	evmcs->guest_tr_base = vmcs12->guest_tr_base;
+	evmcs->guest_gdtr_base = vmcs12->guest_gdtr_base;
+	evmcs->guest_idtr_base = vmcs12->guest_idtr_base;
+
+	evmcs->guest_ia32_pat = vmcs12->guest_ia32_pat;
+	evmcs->guest_ia32_efer = vmcs12->guest_ia32_efer;
+
+	evmcs->guest_pdptr0 = vmcs12->guest_pdptr0;
+	evmcs->guest_pdptr1 = vmcs12->guest_pdptr1;
+	evmcs->guest_pdptr2 = vmcs12->guest_pdptr2;
+	evmcs->guest_pdptr3 = vmcs12->guest_pdptr3;
+
+	evmcs->guest_pending_dbg_exceptions =
+		vmcs12->guest_pending_dbg_exceptions;
+	evmcs->guest_sysenter_esp = vmcs12->guest_sysenter_esp;
+	evmcs->guest_sysenter_eip = vmcs12->guest_sysenter_eip;
+
+	evmcs->guest_activity_state = vmcs12->guest_activity_state;
+	evmcs->guest_sysenter_cs = vmcs12->guest_sysenter_cs;
+
+	evmcs->guest_cr0 = vmcs12->guest_cr0;
+	evmcs->guest_cr3 = vmcs12->guest_cr3;
+	evmcs->guest_cr4 = vmcs12->guest_cr4;
+	evmcs->guest_dr7 = vmcs12->guest_dr7;
+
+	evmcs->guest_physical_address = vmcs12->guest_physical_address;
+
+	evmcs->vm_instruction_error = vmcs12->vm_instruction_error;
+	evmcs->vm_exit_reason = vmcs12->vm_exit_reason;
+	evmcs->vm_exit_intr_info = vmcs12->vm_exit_intr_info;
+	evmcs->vm_exit_intr_error_code = vmcs12->vm_exit_intr_error_code;
+	evmcs->idt_vectoring_info_field = vmcs12->idt_vectoring_info_field;
+	evmcs->idt_vectoring_error_code = vmcs12->idt_vectoring_error_code;
+	evmcs->vm_exit_instruction_len = vmcs12->vm_exit_instruction_len;
+	evmcs->vmx_instruction_info = vmcs12->vmx_instruction_info;
+
+	evmcs->exit_qualification = vmcs12->exit_qualification;
+
+	evmcs->guest_linear_address = vmcs12->guest_linear_address;
+	evmcs->guest_rsp = vmcs12->guest_rsp;
+	evmcs->guest_rflags = vmcs12->guest_rflags;
+
+	evmcs->guest_interruptibility_info =
+		vmcs12->guest_interruptibility_info;
+	evmcs->cpu_based_vm_exec_control = vmcs12->cpu_based_vm_exec_control;
+	evmcs->vm_entry_controls = vmcs12->vm_entry_controls;
+	evmcs->vm_entry_intr_info_field = vmcs12->vm_entry_intr_info_field;
+	evmcs->vm_entry_exception_error_code =
+		vmcs12->vm_entry_exception_error_code;
+	evmcs->vm_entry_instruction_len = vmcs12->vm_entry_instruction_len;
+
+	evmcs->guest_rip = vmcs12->guest_rip;
+
+	evmcs->guest_bndcfgs = vmcs12->guest_bndcfgs;
+
+	return 0;
+}
+
+/*
+ * This is an equivalent of the nested hypervisor executing the vmptrld
+ * instruction.
+ */
+static int nested_vmx_handle_enlightened_vmptrld(struct kvm_vcpu *vcpu,
+						 bool from_launch)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct hv_vp_assist_page assist_page;
+
+	if (likely(!vmx->nested.enlightened_vmcs_enabled))
+		return 1;
+
+	if (unlikely(!kvm_hv_get_assist_page(vcpu, &assist_page)))
+		return 1;
+
+	if (unlikely(!assist_page.enlighten_vmentry))
+		return 1;
+
+	if (unlikely(assist_page.current_nested_vmcs !=
+		     vmx->nested.hv_evmcs_vmptr)) {
+
+		if (!vmx->nested.hv_evmcs)
+			vmx->nested.current_vmptr = -1ull;
+
+		nested_release_evmcs(vcpu);
+
+		vmx->nested.hv_evmcs_page = kvm_vcpu_gpa_to_page(
+			vcpu, assist_page.current_nested_vmcs);
+
+		if (unlikely(is_error_page(vmx->nested.hv_evmcs_page)))
+			return 0;
+
+		vmx->nested.hv_evmcs = kmap(vmx->nested.hv_evmcs_page);
+
+		/*
+		 * Currently, KVM only supports eVMCS version 1
+		 * (== KVM_EVMCS_VERSION) and thus we expect guest to set this
+		 * value to first u32 field of eVMCS which should specify eVMCS
+		 * VersionNumber.
+		 *
+		 * Guest should be aware of supported eVMCS versions by host by
+		 * examining CPUID.0x4000000A.EAX[0:15]. Host userspace VMM is
+		 * expected to set this CPUID leaf according to the value
+		 * returned in vmcs_version from nested_enable_evmcs().
+		 *
+		 * However, it turns out that Microsoft Hyper-V fails to comply
+		 * to their own invented interface: When Hyper-V use eVMCS, it
+		 * just sets first u32 field of eVMCS to revision_id specified
+		 * in MSR_IA32_VMX_BASIC. Instead of used eVMCS version number
+		 * which is one of the supported versions specified in
+		 * CPUID.0x4000000A.EAX[0:15].
+		 *
+		 * To overcome Hyper-V bug, we accept here either a supported
+		 * eVMCS version or VMCS12 revision_id as valid values for first
+		 * u32 field of eVMCS.
+		 */
+		if ((vmx->nested.hv_evmcs->revision_id != KVM_EVMCS_VERSION) &&
+		    (vmx->nested.hv_evmcs->revision_id != VMCS12_REVISION)) {
+			nested_release_evmcs(vcpu);
+			return 0;
+		}
+
+		vmx->nested.dirty_vmcs12 = true;
+		/*
+		 * As we keep L2 state for one guest only 'hv_clean_fields' mask
+		 * can't be used when we switch between them. Reset it here for
+		 * simplicity.
+		 */
+		vmx->nested.hv_evmcs->hv_clean_fields &=
+			~HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
+		vmx->nested.hv_evmcs_vmptr = assist_page.current_nested_vmcs;
+
+		/*
+		 * Unlike normal vmcs12, enlightened vmcs12 is not fully
+		 * reloaded from guest's memory (read only fields, fields not
+		 * present in struct hv_enlightened_vmcs, ...). Make sure there
+		 * are no leftovers.
+		 */
+		if (from_launch) {
+			struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+			memset(vmcs12, 0, sizeof(*vmcs12));
+			vmcs12->hdr.revision_id = VMCS12_REVISION;
+		}
+
+	}
+	return 1;
+}
+
+void nested_sync_from_vmcs12(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * hv_evmcs may end up being not mapped after migration (when
+	 * L2 was running), map it here to make sure vmcs12 changes are
+	 * properly reflected.
+	 */
+	if (vmx->nested.enlightened_vmcs_enabled && !vmx->nested.hv_evmcs)
+		nested_vmx_handle_enlightened_vmptrld(vcpu, false);
+
+	if (vmx->nested.hv_evmcs) {
+		copy_vmcs12_to_enlightened(vmx);
+		/* All fields are clean */
+		vmx->nested.hv_evmcs->hv_clean_fields |=
+			HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
+	} else {
+		copy_vmcs12_to_shadow(vmx);
+	}
+
+	vmx->nested.need_vmcs12_sync = false;
+}
+
+static enum hrtimer_restart vmx_preemption_timer_fn(struct hrtimer *timer)
+{
+	struct vcpu_vmx *vmx =
+		container_of(timer, struct vcpu_vmx, nested.preemption_timer);
+
+	vmx->nested.preemption_timer_expired = true;
+	kvm_make_request(KVM_REQ_EVENT, &vmx->vcpu);
+	kvm_vcpu_kick(&vmx->vcpu);
+
+	return HRTIMER_NORESTART;
+}
+
+static void vmx_start_preemption_timer(struct kvm_vcpu *vcpu)
+{
+	u64 preemption_timeout = get_vmcs12(vcpu)->vmx_preemption_timer_value;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * A timer value of zero is architecturally guaranteed to cause
+	 * a VMExit prior to executing any instructions in the guest.
+	 */
+	if (preemption_timeout == 0) {
+		vmx_preemption_timer_fn(&vmx->nested.preemption_timer);
+		return;
+	}
+
+	if (vcpu->arch.virtual_tsc_khz == 0)
+		return;
+
+	preemption_timeout <<= VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE;
+	preemption_timeout *= 1000000;
+	do_div(preemption_timeout, vcpu->arch.virtual_tsc_khz);
+	hrtimer_start(&vmx->nested.preemption_timer,
+		      ns_to_ktime(preemption_timeout), HRTIMER_MODE_REL);
+}
+
+static u64 nested_vmx_calc_efer(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
+{
+	if (vmx->nested.nested_run_pending &&
+	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER))
+		return vmcs12->guest_ia32_efer;
+	else if (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE)
+		return vmx->vcpu.arch.efer | (EFER_LMA | EFER_LME);
+	else
+		return vmx->vcpu.arch.efer & ~(EFER_LMA | EFER_LME);
+}
+
+static void prepare_vmcs02_constant_state(struct vcpu_vmx *vmx)
+{
+	/*
+	 * If vmcs02 hasn't been initialized, set the constant vmcs02 state
+	 * according to L0's settings (vmcs12 is irrelevant here).  Host
+	 * fields that come from L0 and are not constant, e.g. HOST_CR3,
+	 * will be set as needed prior to VMLAUNCH/VMRESUME.
+	 */
+	if (vmx->nested.vmcs02_initialized)
+		return;
+	vmx->nested.vmcs02_initialized = true;
+
+	/*
+	 * We don't care what the EPTP value is we just need to guarantee
+	 * it's valid so we don't get a false positive when doing early
+	 * consistency checks.
+	 */
+	if (enable_ept && nested_early_check)
+		vmcs_write64(EPT_POINTER, construct_eptp(&vmx->vcpu, 0));
+
+	/* All VMFUNCs are currently emulated through L0 vmexits.  */
+	if (cpu_has_vmx_vmfunc())
+		vmcs_write64(VM_FUNCTION_CONTROL, 0);
+
+	if (cpu_has_vmx_posted_intr())
+		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_NESTED_VECTOR);
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmcs_write64(MSR_BITMAP, __pa(vmx->nested.vmcs02.msr_bitmap));
+
+	if (enable_pml)
+		vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
+
+	/*
+	 * Set the MSR load/store lists to match L0's settings.  Only the
+	 * addresses are constant (for vmcs02), the counts can change based
+	 * on L2's behavior, e.g. switching to/from long mode.
+	 */
+	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
+	vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
+	vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
+
+	vmx_set_constant_host_state(vmx);
+}
+
+static void prepare_vmcs02_early_full(struct vcpu_vmx *vmx,
+				      struct vmcs12 *vmcs12)
+{
+	prepare_vmcs02_constant_state(vmx);
+
+	vmcs_write64(VMCS_LINK_POINTER, -1ull);
+
+	if (enable_vpid) {
+		if (nested_cpu_has_vpid(vmcs12) && vmx->nested.vpid02)
+			vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->nested.vpid02);
+		else
+			vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
+	}
+}
+
+static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
+{
+	u32 exec_control, vmcs12_exec_ctrl;
+	u64 guest_efer = nested_vmx_calc_efer(vmx, vmcs12);
+
+	if (vmx->nested.dirty_vmcs12 || vmx->nested.hv_evmcs)
+		prepare_vmcs02_early_full(vmx, vmcs12);
+
+	/*
+	 * HOST_RSP is normally set correctly in vmx_vcpu_run() just before
+	 * entry, but only if the current (host) sp changed from the value
+	 * we wrote last (vmx->host_rsp).  This cache is no longer relevant
+	 * if we switch vmcs, and rather than hold a separate cache per vmcs,
+	 * here we just force the write to happen on entry.  host_rsp will
+	 * also be written unconditionally by nested_vmx_check_vmentry_hw()
+	 * if we are doing early consistency checks via hardware.
+	 */
+	vmx->host_rsp = 0;
+
+	/*
+	 * PIN CONTROLS
+	 */
+	exec_control = vmcs12->pin_based_vm_exec_control;
+
+	/* Preemption timer setting is computed directly in vmx_vcpu_run.  */
+	exec_control |= vmcs_config.pin_based_exec_ctrl;
+	exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
+	vmx->loaded_vmcs->hv_timer_armed = false;
+
+	/* Posted interrupts setting is only taken from vmcs12.  */
+	if (nested_cpu_has_posted_intr(vmcs12)) {
+		vmx->nested.posted_intr_nv = vmcs12->posted_intr_nv;
+		vmx->nested.pi_pending = false;
+	} else {
+		exec_control &= ~PIN_BASED_POSTED_INTR;
+	}
+	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control);
+
+	/*
+	 * EXEC CONTROLS
+	 */
+	exec_control = vmx_exec_control(vmx); /* L0's desires */
+	exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
+	exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
+	exec_control &= ~CPU_BASED_TPR_SHADOW;
+	exec_control |= vmcs12->cpu_based_vm_exec_control;
+
+	/*
+	 * Write an illegal value to VIRTUAL_APIC_PAGE_ADDR. Later, if
+	 * nested_get_vmcs12_pages can't fix it up, the illegal value
+	 * will result in a VM entry failure.
+	 */
+	if (exec_control & CPU_BASED_TPR_SHADOW) {
+		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, -1ull);
+		vmcs_write32(TPR_THRESHOLD, vmcs12->tpr_threshold);
+	} else {
+#ifdef CONFIG_X86_64
+		exec_control |= CPU_BASED_CR8_LOAD_EXITING |
+				CPU_BASED_CR8_STORE_EXITING;
+#endif
+	}
+
+	/*
+	 * A vmexit (to either L1 hypervisor or L0 userspace) is always needed
+	 * for I/O port accesses.
+	 */
+	exec_control &= ~CPU_BASED_USE_IO_BITMAPS;
+	exec_control |= CPU_BASED_UNCOND_IO_EXITING;
+	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control);
+
+	/*
+	 * SECONDARY EXEC CONTROLS
+	 */
+	if (cpu_has_secondary_exec_ctrls()) {
+		exec_control = vmx->secondary_exec_control;
+
+		/* Take the following fields only from vmcs12 */
+		exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+				  SECONDARY_EXEC_ENABLE_INVPCID |
+				  SECONDARY_EXEC_RDTSCP |
+				  SECONDARY_EXEC_XSAVES |
+				  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
+				  SECONDARY_EXEC_APIC_REGISTER_VIRT |
+				  SECONDARY_EXEC_ENABLE_VMFUNC);
+		if (nested_cpu_has(vmcs12,
+				   CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)) {
+			vmcs12_exec_ctrl = vmcs12->secondary_vm_exec_control &
+				~SECONDARY_EXEC_ENABLE_PML;
+			exec_control |= vmcs12_exec_ctrl;
+		}
+
+		/* VMCS shadowing for L2 is emulated for now */
+		exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
+
+		if (exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
+			vmcs_write16(GUEST_INTR_STATUS,
+				vmcs12->guest_intr_status);
+
+		/*
+		 * Write an illegal value to APIC_ACCESS_ADDR. Later,
+		 * nested_get_vmcs12_pages will either fix it up or
+		 * remove the VM execution control.
+		 */
+		if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
+			vmcs_write64(APIC_ACCESS_ADDR, -1ull);
+
+		if (exec_control & SECONDARY_EXEC_ENCLS_EXITING)
+			vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
+
+		vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
+	}
+
+	/*
+	 * ENTRY CONTROLS
+	 *
+	 * vmcs12's VM_{ENTRY,EXIT}_LOAD_IA32_EFER and VM_ENTRY_IA32E_MODE
+	 * are emulated by vmx_set_efer() in prepare_vmcs02(), but speculate
+	 * on the related bits (if supported by the CPU) in the hope that
+	 * we can avoid VMWrites during vmx_set_efer().
+	 */
+	exec_control = (vmcs12->vm_entry_controls | vmx_vmentry_ctrl()) &
+			~VM_ENTRY_IA32E_MODE & ~VM_ENTRY_LOAD_IA32_EFER;
+	if (cpu_has_load_ia32_efer()) {
+		if (guest_efer & EFER_LMA)
+			exec_control |= VM_ENTRY_IA32E_MODE;
+		if (guest_efer != host_efer)
+			exec_control |= VM_ENTRY_LOAD_IA32_EFER;
+	}
+	vm_entry_controls_init(vmx, exec_control);
+
+	/*
+	 * EXIT CONTROLS
+	 *
+	 * L2->L1 exit controls are emulated - the hardware exit is to L0 so
+	 * we should use its exit controls. Note that VM_EXIT_LOAD_IA32_EFER
+	 * bits may be modified by vmx_set_efer() in prepare_vmcs02().
+	 */
+	exec_control = vmx_vmexit_ctrl();
+	if (cpu_has_load_ia32_efer() && guest_efer != host_efer)
+		exec_control |= VM_EXIT_LOAD_IA32_EFER;
+	vm_exit_controls_init(vmx, exec_control);
+
+	/*
+	 * Conceptually we want to copy the PML address and index from
+	 * vmcs01 here, and then back to vmcs01 on nested vmexit. But,
+	 * since we always flush the log on each vmexit and never change
+	 * the PML address (once set), this happens to be equivalent to
+	 * simply resetting the index in vmcs02.
+	 */
+	if (enable_pml)
+		vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
+
+	/*
+	 * Interrupt/Exception Fields
+	 */
+	if (vmx->nested.nested_run_pending) {
+		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+			     vmcs12->vm_entry_intr_info_field);
+		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
+			     vmcs12->vm_entry_exception_error_code);
+		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+			     vmcs12->vm_entry_instruction_len);
+		vmcs_write32(GUEST_INTERRUPTIBILITY_INFO,
+			     vmcs12->guest_interruptibility_info);
+		vmx->loaded_vmcs->nmi_known_unmasked =
+			!(vmcs12->guest_interruptibility_info & GUEST_INTR_STATE_NMI);
+	} else {
+		vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
+	}
+}
+
+static void prepare_vmcs02_full(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
+{
+	struct hv_enlightened_vmcs *hv_evmcs = vmx->nested.hv_evmcs;
+
+	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
+			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2)) {
+		vmcs_write16(GUEST_ES_SELECTOR, vmcs12->guest_es_selector);
+		vmcs_write16(GUEST_CS_SELECTOR, vmcs12->guest_cs_selector);
+		vmcs_write16(GUEST_SS_SELECTOR, vmcs12->guest_ss_selector);
+		vmcs_write16(GUEST_DS_SELECTOR, vmcs12->guest_ds_selector);
+		vmcs_write16(GUEST_FS_SELECTOR, vmcs12->guest_fs_selector);
+		vmcs_write16(GUEST_GS_SELECTOR, vmcs12->guest_gs_selector);
+		vmcs_write16(GUEST_LDTR_SELECTOR, vmcs12->guest_ldtr_selector);
+		vmcs_write16(GUEST_TR_SELECTOR, vmcs12->guest_tr_selector);
+		vmcs_write32(GUEST_ES_LIMIT, vmcs12->guest_es_limit);
+		vmcs_write32(GUEST_CS_LIMIT, vmcs12->guest_cs_limit);
+		vmcs_write32(GUEST_SS_LIMIT, vmcs12->guest_ss_limit);
+		vmcs_write32(GUEST_DS_LIMIT, vmcs12->guest_ds_limit);
+		vmcs_write32(GUEST_FS_LIMIT, vmcs12->guest_fs_limit);
+		vmcs_write32(GUEST_GS_LIMIT, vmcs12->guest_gs_limit);
+		vmcs_write32(GUEST_LDTR_LIMIT, vmcs12->guest_ldtr_limit);
+		vmcs_write32(GUEST_TR_LIMIT, vmcs12->guest_tr_limit);
+		vmcs_write32(GUEST_GDTR_LIMIT, vmcs12->guest_gdtr_limit);
+		vmcs_write32(GUEST_IDTR_LIMIT, vmcs12->guest_idtr_limit);
+		vmcs_write32(GUEST_ES_AR_BYTES, vmcs12->guest_es_ar_bytes);
+		vmcs_write32(GUEST_DS_AR_BYTES, vmcs12->guest_ds_ar_bytes);
+		vmcs_write32(GUEST_FS_AR_BYTES, vmcs12->guest_fs_ar_bytes);
+		vmcs_write32(GUEST_GS_AR_BYTES, vmcs12->guest_gs_ar_bytes);
+		vmcs_write32(GUEST_LDTR_AR_BYTES, vmcs12->guest_ldtr_ar_bytes);
+		vmcs_write32(GUEST_TR_AR_BYTES, vmcs12->guest_tr_ar_bytes);
+		vmcs_writel(GUEST_ES_BASE, vmcs12->guest_es_base);
+		vmcs_writel(GUEST_CS_BASE, vmcs12->guest_cs_base);
+		vmcs_writel(GUEST_SS_BASE, vmcs12->guest_ss_base);
+		vmcs_writel(GUEST_DS_BASE, vmcs12->guest_ds_base);
+		vmcs_writel(GUEST_FS_BASE, vmcs12->guest_fs_base);
+		vmcs_writel(GUEST_GS_BASE, vmcs12->guest_gs_base);
+		vmcs_writel(GUEST_LDTR_BASE, vmcs12->guest_ldtr_base);
+		vmcs_writel(GUEST_TR_BASE, vmcs12->guest_tr_base);
+		vmcs_writel(GUEST_GDTR_BASE, vmcs12->guest_gdtr_base);
+		vmcs_writel(GUEST_IDTR_BASE, vmcs12->guest_idtr_base);
+	}
+
+	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
+			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1)) {
+		vmcs_write32(GUEST_SYSENTER_CS, vmcs12->guest_sysenter_cs);
+		vmcs_writel(GUEST_PENDING_DBG_EXCEPTIONS,
+			    vmcs12->guest_pending_dbg_exceptions);
+		vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->guest_sysenter_esp);
+		vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->guest_sysenter_eip);
+
+		/*
+		 * L1 may access the L2's PDPTR, so save them to construct
+		 * vmcs12
+		 */
+		if (enable_ept) {
+			vmcs_write64(GUEST_PDPTR0, vmcs12->guest_pdptr0);
+			vmcs_write64(GUEST_PDPTR1, vmcs12->guest_pdptr1);
+			vmcs_write64(GUEST_PDPTR2, vmcs12->guest_pdptr2);
+			vmcs_write64(GUEST_PDPTR3, vmcs12->guest_pdptr3);
+		}
+	}
+
+	if (nested_cpu_has_xsaves(vmcs12))
+		vmcs_write64(XSS_EXIT_BITMAP, vmcs12->xss_exit_bitmap);
+
+	/*
+	 * Whether page-faults are trapped is determined by a combination of
+	 * 3 settings: PFEC_MASK, PFEC_MATCH and EXCEPTION_BITMAP.PF.
+	 * If enable_ept, L0 doesn't care about page faults and we should
+	 * set all of these to L1's desires. However, if !enable_ept, L0 does
+	 * care about (at least some) page faults, and because it is not easy
+	 * (if at all possible?) to merge L0 and L1's desires, we simply ask
+	 * to exit on each and every L2 page fault. This is done by setting
+	 * MASK=MATCH=0 and (see below) EB.PF=1.
+	 * Note that below we don't need special code to set EB.PF beyond the
+	 * "or"ing of the EB of vmcs01 and vmcs12, because when enable_ept,
+	 * vmcs01's EB.PF is 0 so the "or" will take vmcs12's value, and when
+	 * !enable_ept, EB.PF is 1, so the "or" will always be 1.
+	 */
+	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK,
+		enable_ept ? vmcs12->page_fault_error_code_mask : 0);
+	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH,
+		enable_ept ? vmcs12->page_fault_error_code_match : 0);
+
+	if (cpu_has_vmx_apicv()) {
+		vmcs_write64(EOI_EXIT_BITMAP0, vmcs12->eoi_exit_bitmap0);
+		vmcs_write64(EOI_EXIT_BITMAP1, vmcs12->eoi_exit_bitmap1);
+		vmcs_write64(EOI_EXIT_BITMAP2, vmcs12->eoi_exit_bitmap2);
+		vmcs_write64(EOI_EXIT_BITMAP3, vmcs12->eoi_exit_bitmap3);
+	}
+
+	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
+	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
+
+	set_cr4_guest_host_mask(vmx);
+
+	if (kvm_mpx_supported()) {
+		if (vmx->nested.nested_run_pending &&
+			(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS))
+			vmcs_write64(GUEST_BNDCFGS, vmcs12->guest_bndcfgs);
+		else
+			vmcs_write64(GUEST_BNDCFGS, vmx->nested.vmcs01_guest_bndcfgs);
+	}
+}
+
+/*
+ * prepare_vmcs02 is called when the L1 guest hypervisor runs its nested
+ * L2 guest. L1 has a vmcs for L2 (vmcs12), and this function "merges" it
+ * with L0's requirements for its guest (a.k.a. vmcs01), so we can run the L2
+ * guest in a way that will both be appropriate to L1's requests, and our
+ * needs. In addition to modifying the active vmcs (which is vmcs02), this
+ * function also has additional necessary side-effects, like setting various
+ * vcpu->arch fields.
+ * Returns 0 on success, 1 on failure. Invalid state exit qualification code
+ * is assigned to entry_failure_code on failure.
+ */
+static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
+			  u32 *entry_failure_code)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct hv_enlightened_vmcs *hv_evmcs = vmx->nested.hv_evmcs;
+
+	if (vmx->nested.dirty_vmcs12 || vmx->nested.hv_evmcs) {
+		prepare_vmcs02_full(vmx, vmcs12);
+		vmx->nested.dirty_vmcs12 = false;
+	}
+
+	/*
+	 * First, the fields that are shadowed.  This must be kept in sync
+	 * with vmcs_shadow_fields.h.
+	 */
+	if (!hv_evmcs || !(hv_evmcs->hv_clean_fields &
+			   HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2)) {
+		vmcs_write32(GUEST_CS_AR_BYTES, vmcs12->guest_cs_ar_bytes);
+		vmcs_write32(GUEST_SS_AR_BYTES, vmcs12->guest_ss_ar_bytes);
+	}
+
+	if (vmx->nested.nested_run_pending &&
+	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS)) {
+		kvm_set_dr(vcpu, 7, vmcs12->guest_dr7);
+		vmcs_write64(GUEST_IA32_DEBUGCTL, vmcs12->guest_ia32_debugctl);
+	} else {
+		kvm_set_dr(vcpu, 7, vcpu->arch.dr7);
+		vmcs_write64(GUEST_IA32_DEBUGCTL, vmx->nested.vmcs01_debugctl);
+	}
+	vmx_set_rflags(vcpu, vmcs12->guest_rflags);
+
+	vmx->nested.preemption_timer_expired = false;
+	if (nested_cpu_has_preemption_timer(vmcs12))
+		vmx_start_preemption_timer(vcpu);
+
+	/* EXCEPTION_BITMAP and CR0_GUEST_HOST_MASK should basically be the
+	 * bitwise-or of what L1 wants to trap for L2, and what we want to
+	 * trap. Note that CR0.TS also needs updating - we do this later.
+	 */
+	update_exception_bitmap(vcpu);
+	vcpu->arch.cr0_guest_owned_bits &= ~vmcs12->cr0_guest_host_mask;
+	vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits);
+
+	if (vmx->nested.nested_run_pending &&
+	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_PAT)) {
+		vmcs_write64(GUEST_IA32_PAT, vmcs12->guest_ia32_pat);
+		vcpu->arch.pat = vmcs12->guest_ia32_pat;
+	} else if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
+		vmcs_write64(GUEST_IA32_PAT, vmx->vcpu.arch.pat);
+	}
+
+	vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
+
+	if (kvm_has_tsc_control)
+		decache_tsc_multiplier(vmx);
+
+	if (enable_vpid) {
+		/*
+		 * There is no direct mapping between vpid02 and vpid12, the
+		 * vpid02 is per-vCPU for L0 and reused while the value of
+		 * vpid12 is changed w/ one invvpid during nested vmentry.
+		 * The vpid12 is allocated by L1 for L2, so it will not
+		 * influence global bitmap(for vpid01 and vpid02 allocation)
+		 * even if spawn a lot of nested vCPUs.
+		 */
+		if (nested_cpu_has_vpid(vmcs12) && nested_has_guest_tlb_tag(vcpu)) {
+			if (vmcs12->virtual_processor_id != vmx->nested.last_vpid) {
+				vmx->nested.last_vpid = vmcs12->virtual_processor_id;
+				__vmx_flush_tlb(vcpu, nested_get_vpid02(vcpu), false);
+			}
+		} else {
+			/*
+			 * If L1 use EPT, then L0 needs to execute INVEPT on
+			 * EPTP02 instead of EPTP01. Therefore, delay TLB
+			 * flush until vmcs02->eptp is fully updated by
+			 * KVM_REQ_LOAD_CR3. Note that this assumes
+			 * KVM_REQ_TLB_FLUSH is evaluated after
+			 * KVM_REQ_LOAD_CR3 in vcpu_enter_guest().
+			 */
+			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+		}
+	}
+
+	if (nested_cpu_has_ept(vmcs12))
+		nested_ept_init_mmu_context(vcpu);
+	else if (nested_cpu_has2(vmcs12,
+				 SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
+		vmx_flush_tlb(vcpu, true);
+
+	/*
+	 * This sets GUEST_CR0 to vmcs12->guest_cr0, possibly modifying those
+	 * bits which we consider mandatory enabled.
+	 * The CR0_READ_SHADOW is what L2 should have expected to read given
+	 * the specifications by L1; It's not enough to take
+	 * vmcs12->cr0_read_shadow because on our cr0_guest_host_mask we we
+	 * have more bits than L1 expected.
+	 */
+	vmx_set_cr0(vcpu, vmcs12->guest_cr0);
+	vmcs_writel(CR0_READ_SHADOW, nested_read_cr0(vmcs12));
+
+	vmx_set_cr4(vcpu, vmcs12->guest_cr4);
+	vmcs_writel(CR4_READ_SHADOW, nested_read_cr4(vmcs12));
+
+	vcpu->arch.efer = nested_vmx_calc_efer(vmx, vmcs12);
+	/* Note: may modify VM_ENTRY/EXIT_CONTROLS and GUEST/HOST_IA32_EFER */
+	vmx_set_efer(vcpu, vcpu->arch.efer);
+
+	/*
+	 * Guest state is invalid and unrestricted guest is disabled,
+	 * which means L1 attempted VMEntry to L2 with invalid state.
+	 * Fail the VMEntry.
+	 */
+	if (vmx->emulation_required) {
+		*entry_failure_code = ENTRY_FAIL_DEFAULT;
+		return 1;
+	}
+
+	/* Shadow page tables on either EPT or shadow page tables. */
+	if (nested_vmx_load_cr3(vcpu, vmcs12->guest_cr3, nested_cpu_has_ept(vmcs12),
+				entry_failure_code))
+		return 1;
+
+	if (!enable_ept)
+		vcpu->arch.walk_mmu->inject_page_fault = vmx_inject_page_fault_nested;
+
+	kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->guest_rsp);
+	kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->guest_rip);
+	return 0;
+}
+
+static int nested_vmx_check_nmi_controls(struct vmcs12 *vmcs12)
+{
+	if (!nested_cpu_has_nmi_exiting(vmcs12) &&
+	    nested_cpu_has_virtual_nmis(vmcs12))
+		return -EINVAL;
+
+	if (!nested_cpu_has_virtual_nmis(vmcs12) &&
+	    nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING))
+		return -EINVAL;
+
+	return 0;
+}
+
+static bool valid_ept_address(struct kvm_vcpu *vcpu, u64 address)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int maxphyaddr = cpuid_maxphyaddr(vcpu);
+
+	/* Check for memory type validity */
+	switch (address & VMX_EPTP_MT_MASK) {
+	case VMX_EPTP_MT_UC:
+		if (!(vmx->nested.msrs.ept_caps & VMX_EPTP_UC_BIT))
+			return false;
+		break;
+	case VMX_EPTP_MT_WB:
+		if (!(vmx->nested.msrs.ept_caps & VMX_EPTP_WB_BIT))
+			return false;
+		break;
+	default:
+		return false;
+	}
+
+	/* only 4 levels page-walk length are valid */
+	if ((address & VMX_EPTP_PWL_MASK) != VMX_EPTP_PWL_4)
+		return false;
+
+	/* Reserved bits should not be set */
+	if (address >> maxphyaddr || ((address >> 7) & 0x1f))
+		return false;
+
+	/* AD, if set, should be supported */
+	if (address & VMX_EPTP_AD_ENABLE_BIT) {
+		if (!(vmx->nested.msrs.ept_caps & VMX_EPT_AD_BIT))
+			return false;
+	}
+
+	return true;
+}
+
+/*
+ * Checks related to VM-Execution Control Fields
+ */
+static int nested_check_vm_execution_controls(struct kvm_vcpu *vcpu,
+                                              struct vmcs12 *vmcs12)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!vmx_control_verify(vmcs12->pin_based_vm_exec_control,
+				vmx->nested.msrs.pinbased_ctls_low,
+				vmx->nested.msrs.pinbased_ctls_high) ||
+	    !vmx_control_verify(vmcs12->cpu_based_vm_exec_control,
+				vmx->nested.msrs.procbased_ctls_low,
+				vmx->nested.msrs.procbased_ctls_high))
+		return -EINVAL;
+
+	if (nested_cpu_has(vmcs12, CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) &&
+	    !vmx_control_verify(vmcs12->secondary_vm_exec_control,
+				 vmx->nested.msrs.secondary_ctls_low,
+				 vmx->nested.msrs.secondary_ctls_high))
+		return -EINVAL;
+
+	if (vmcs12->cr3_target_count > nested_cpu_vmx_misc_cr3_count(vcpu) ||
+	    nested_vmx_check_io_bitmap_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_msr_bitmap_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_tpr_shadow_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_apic_access_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_apicv_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_nmi_controls(vmcs12) ||
+	    nested_vmx_check_pml_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_unrestricted_guest_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_mode_based_ept_exec_controls(vcpu, vmcs12) ||
+	    nested_vmx_check_shadow_vmcs_controls(vcpu, vmcs12) ||
+	    (nested_cpu_has_vpid(vmcs12) && !vmcs12->virtual_processor_id))
+		return -EINVAL;
+
+	if (nested_cpu_has_ept(vmcs12) &&
+	    !valid_ept_address(vcpu, vmcs12->ept_pointer))
+		return -EINVAL;
+
+	if (nested_cpu_has_vmfunc(vmcs12)) {
+		if (vmcs12->vm_function_control &
+		    ~vmx->nested.msrs.vmfunc_controls)
+			return -EINVAL;
+
+		if (nested_cpu_has_eptp_switching(vmcs12)) {
+			if (!nested_cpu_has_ept(vmcs12) ||
+			    !page_address_valid(vcpu, vmcs12->eptp_list_address))
+				return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Checks related to VM-Exit Control Fields
+ */
+static int nested_check_vm_exit_controls(struct kvm_vcpu *vcpu,
+                                         struct vmcs12 *vmcs12)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!vmx_control_verify(vmcs12->vm_exit_controls,
+				vmx->nested.msrs.exit_ctls_low,
+				vmx->nested.msrs.exit_ctls_high) ||
+	    nested_vmx_check_exit_msr_switch_controls(vcpu, vmcs12))
+		return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * Checks related to VM-Entry Control Fields
+ */
+static int nested_check_vm_entry_controls(struct kvm_vcpu *vcpu,
+					  struct vmcs12 *vmcs12)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!vmx_control_verify(vmcs12->vm_entry_controls,
+				vmx->nested.msrs.entry_ctls_low,
+				vmx->nested.msrs.entry_ctls_high))
+		return -EINVAL;
+
+	/*
+	 * From the Intel SDM, volume 3:
+	 * Fields relevant to VM-entry event injection must be set properly.
+	 * These fields are the VM-entry interruption-information field, the
+	 * VM-entry exception error code, and the VM-entry instruction length.
+	 */
+	if (vmcs12->vm_entry_intr_info_field & INTR_INFO_VALID_MASK) {
+		u32 intr_info = vmcs12->vm_entry_intr_info_field;
+		u8 vector = intr_info & INTR_INFO_VECTOR_MASK;
+		u32 intr_type = intr_info & INTR_INFO_INTR_TYPE_MASK;
+		bool has_error_code = intr_info & INTR_INFO_DELIVER_CODE_MASK;
+		bool should_have_error_code;
+		bool urg = nested_cpu_has2(vmcs12,
+					   SECONDARY_EXEC_UNRESTRICTED_GUEST);
+		bool prot_mode = !urg || vmcs12->guest_cr0 & X86_CR0_PE;
+
+		/* VM-entry interruption-info field: interruption type */
+		if (intr_type == INTR_TYPE_RESERVED ||
+		    (intr_type == INTR_TYPE_OTHER_EVENT &&
+		     !nested_cpu_supports_monitor_trap_flag(vcpu)))
+			return -EINVAL;
+
+		/* VM-entry interruption-info field: vector */
+		if ((intr_type == INTR_TYPE_NMI_INTR && vector != NMI_VECTOR) ||
+		    (intr_type == INTR_TYPE_HARD_EXCEPTION && vector > 31) ||
+		    (intr_type == INTR_TYPE_OTHER_EVENT && vector != 0))
+			return -EINVAL;
+
+		/* VM-entry interruption-info field: deliver error code */
+		should_have_error_code =
+			intr_type == INTR_TYPE_HARD_EXCEPTION && prot_mode &&
+			x86_exception_has_error_code(vector);
+		if (has_error_code != should_have_error_code)
+			return -EINVAL;
+
+		/* VM-entry exception error code */
+		if (has_error_code &&
+		    vmcs12->vm_entry_exception_error_code & GENMASK(31, 15))
+			return -EINVAL;
+
+		/* VM-entry interruption-info field: reserved bits */
+		if (intr_info & INTR_INFO_RESVD_BITS_MASK)
+			return -EINVAL;
+
+		/* VM-entry instruction length */
+		switch (intr_type) {
+		case INTR_TYPE_SOFT_EXCEPTION:
+		case INTR_TYPE_SOFT_INTR:
+		case INTR_TYPE_PRIV_SW_EXCEPTION:
+			if ((vmcs12->vm_entry_instruction_len > 15) ||
+			    (vmcs12->vm_entry_instruction_len == 0 &&
+			     !nested_cpu_has_zero_length_injection(vcpu)))
+				return -EINVAL;
+		}
+	}
+
+	if (nested_vmx_check_entry_msr_switch_controls(vcpu, vmcs12))
+		return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * Checks related to Host Control Registers and MSRs
+ */
+static int nested_check_host_control_regs(struct kvm_vcpu *vcpu,
+                                          struct vmcs12 *vmcs12)
+{
+	bool ia32e;
+
+	if (!nested_host_cr0_valid(vcpu, vmcs12->host_cr0) ||
+	    !nested_host_cr4_valid(vcpu, vmcs12->host_cr4) ||
+	    !nested_cr3_valid(vcpu, vmcs12->host_cr3))
+		return -EINVAL;
+	/*
+	 * If the load IA32_EFER VM-exit control is 1, bits reserved in the
+	 * IA32_EFER MSR must be 0 in the field for that register. In addition,
+	 * the values of the LMA and LME bits in the field must each be that of
+	 * the host address-space size VM-exit control.
+	 */
+	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_EFER) {
+		ia32e = (vmcs12->vm_exit_controls &
+			 VM_EXIT_HOST_ADDR_SPACE_SIZE) != 0;
+		if (!kvm_valid_efer(vcpu, vmcs12->host_ia32_efer) ||
+		    ia32e != !!(vmcs12->host_ia32_efer & EFER_LMA) ||
+		    ia32e != !!(vmcs12->host_ia32_efer & EFER_LME))
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
+/*
+ * Checks related to Guest Non-register State
+ */
+static int nested_check_guest_non_reg_state(struct vmcs12 *vmcs12)
+{
+	if (vmcs12->guest_activity_state != GUEST_ACTIVITY_ACTIVE &&
+	    vmcs12->guest_activity_state != GUEST_ACTIVITY_HLT)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int nested_vmx_check_vmentry_prereqs(struct kvm_vcpu *vcpu,
+					    struct vmcs12 *vmcs12)
+{
+	if (nested_check_vm_execution_controls(vcpu, vmcs12) ||
+	    nested_check_vm_exit_controls(vcpu, vmcs12) ||
+	    nested_check_vm_entry_controls(vcpu, vmcs12))
+		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
+
+	if (nested_check_host_control_regs(vcpu, vmcs12))
+		return VMXERR_ENTRY_INVALID_HOST_STATE_FIELD;
+
+	if (nested_check_guest_non_reg_state(vmcs12))
+		return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
+
+	return 0;
+}
+
+static int nested_vmx_check_vmcs_link_ptr(struct kvm_vcpu *vcpu,
+					  struct vmcs12 *vmcs12)
+{
+	int r;
+	struct page *page;
+	struct vmcs12 *shadow;
+
+	if (vmcs12->vmcs_link_pointer == -1ull)
+		return 0;
+
+	if (!page_address_valid(vcpu, vmcs12->vmcs_link_pointer))
+		return -EINVAL;
+
+	page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->vmcs_link_pointer);
+	if (is_error_page(page))
+		return -EINVAL;
+
+	r = 0;
+	shadow = kmap(page);
+	if (shadow->hdr.revision_id != VMCS12_REVISION ||
+	    shadow->hdr.shadow_vmcs != nested_cpu_has_shadow_vmcs(vmcs12))
+		r = -EINVAL;
+	kunmap(page);
+	kvm_release_page_clean(page);
+	return r;
+}
+
+static int nested_vmx_check_vmentry_postreqs(struct kvm_vcpu *vcpu,
+					     struct vmcs12 *vmcs12,
+					     u32 *exit_qual)
+{
+	bool ia32e;
+
+	*exit_qual = ENTRY_FAIL_DEFAULT;
+
+	if (!nested_guest_cr0_valid(vcpu, vmcs12->guest_cr0) ||
+	    !nested_guest_cr4_valid(vcpu, vmcs12->guest_cr4))
+		return 1;
+
+	if (nested_vmx_check_vmcs_link_ptr(vcpu, vmcs12)) {
+		*exit_qual = ENTRY_FAIL_VMCS_LINK_PTR;
+		return 1;
+	}
+
+	/*
+	 * If the load IA32_EFER VM-entry control is 1, the following checks
+	 * are performed on the field for the IA32_EFER MSR:
+	 * - Bits reserved in the IA32_EFER MSR must be 0.
+	 * - Bit 10 (corresponding to IA32_EFER.LMA) must equal the value of
+	 *   the IA-32e mode guest VM-exit control. It must also be identical
+	 *   to bit 8 (LME) if bit 31 in the CR0 field (corresponding to
+	 *   CR0.PG) is 1.
+	 */
+	if (to_vmx(vcpu)->nested.nested_run_pending &&
+	    (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER)) {
+		ia32e = (vmcs12->vm_entry_controls & VM_ENTRY_IA32E_MODE) != 0;
+		if (!kvm_valid_efer(vcpu, vmcs12->guest_ia32_efer) ||
+		    ia32e != !!(vmcs12->guest_ia32_efer & EFER_LMA) ||
+		    ((vmcs12->guest_cr0 & X86_CR0_PG) &&
+		     ia32e != !!(vmcs12->guest_ia32_efer & EFER_LME)))
+			return 1;
+	}
+
+	if ((vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS) &&
+		(is_noncanonical_address(vmcs12->guest_bndcfgs & PAGE_MASK, vcpu) ||
+		(vmcs12->guest_bndcfgs & MSR_IA32_BNDCFGS_RSVD)))
+			return 1;
+
+	return 0;
+}
+
+static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long cr3, cr4;
+
+	if (!nested_early_check)
+		return 0;
+
+	if (vmx->msr_autoload.host.nr)
+		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
+	if (vmx->msr_autoload.guest.nr)
+		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
+
+	preempt_disable();
+
+	vmx_prepare_switch_to_guest(vcpu);
+
+	/*
+	 * Induce a consistency check VMExit by clearing bit 1 in GUEST_RFLAGS,
+	 * which is reserved to '1' by hardware.  GUEST_RFLAGS is guaranteed to
+	 * be written (by preparve_vmcs02()) before the "real" VMEnter, i.e.
+	 * there is no need to preserve other bits or save/restore the field.
+	 */
+	vmcs_writel(GUEST_RFLAGS, 0);
+
+	cr3 = __get_current_cr3_fast();
+	if (unlikely(cr3 != vmx->loaded_vmcs->host_state.cr3)) {
+		vmcs_writel(HOST_CR3, cr3);
+		vmx->loaded_vmcs->host_state.cr3 = cr3;
+	}
+
+	cr4 = cr4_read_shadow();
+	if (unlikely(cr4 != vmx->loaded_vmcs->host_state.cr4)) {
+		vmcs_writel(HOST_CR4, cr4);
+		vmx->loaded_vmcs->host_state.cr4 = cr4;
+	}
+
+	vmx->__launched = vmx->loaded_vmcs->launched;
+
+	asm(
+		/* Set HOST_RSP */
+		"sub $%c[wordsize], %%" _ASM_SP "\n\t" /* temporarily adjust RSP for CALL */
+		__ex("vmwrite %%" _ASM_SP ", %%" _ASM_DX) "\n\t"
+		"mov %%" _ASM_SP ", %c[host_rsp](%1)\n\t"
+		"add $%c[wordsize], %%" _ASM_SP "\n\t" /* un-adjust RSP */
+
+		/* Check if vmlaunch or vmresume is needed */
+		"cmpl $0, %c[launched](%% " _ASM_CX")\n\t"
+
+		"call vmx_vmenter\n\t"
+
+		/* Set vmx->fail accordingly */
+		"setbe %c[fail](%% " _ASM_CX")\n\t"
+	      : ASM_CALL_CONSTRAINT
+	      : "c"(vmx), "d"((unsigned long)HOST_RSP),
+		[launched]"i"(offsetof(struct vcpu_vmx, __launched)),
+		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
+		[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)),
+		[wordsize]"i"(sizeof(ulong))
+	      : "rax", "cc", "memory"
+	);
+
+	preempt_enable();
+
+	if (vmx->msr_autoload.host.nr)
+		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
+	if (vmx->msr_autoload.guest.nr)
+		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
+
+	if (vmx->fail) {
+		WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
+			     VMXERR_ENTRY_INVALID_CONTROL_FIELD);
+		vmx->fail = 0;
+		return 1;
+	}
+
+	/*
+	 * VMExit clears RFLAGS.IF and DR7, even on a consistency check.
+	 */
+	local_irq_enable();
+	if (hw_breakpoint_active())
+		set_debugreg(__this_cpu_read(cpu_dr7), 7);
+
+	/*
+	 * A non-failing VMEntry means we somehow entered guest mode with
+	 * an illegal RIP, and that's just the tip of the iceberg.  There
+	 * is no telling what memory has been modified or what state has
+	 * been exposed to unknown code.  Hitting this all but guarantees
+	 * a (very critical) hardware issue.
+	 */
+	WARN_ON(!(vmcs_read32(VM_EXIT_REASON) &
+		VMX_EXIT_REASONS_FAILED_VMENTRY));
+
+	return 0;
+}
+STACK_FRAME_NON_STANDARD(nested_vmx_check_vmentry_hw);
+
+
+static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
+						 struct vmcs12 *vmcs12);
+
+static void nested_get_vmcs12_pages(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct page *page;
+	u64 hpa;
+
+	if (nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) {
+		/*
+		 * Translate L1 physical address to host physical
+		 * address for vmcs02. Keep the page pinned, so this
+		 * physical address remains valid. We keep a reference
+		 * to it so we can release it later.
+		 */
+		if (vmx->nested.apic_access_page) { /* shouldn't happen */
+			kvm_release_page_dirty(vmx->nested.apic_access_page);
+			vmx->nested.apic_access_page = NULL;
+		}
+		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->apic_access_addr);
+		/*
+		 * If translation failed, no matter: This feature asks
+		 * to exit when accessing the given address, and if it
+		 * can never be accessed, this feature won't do
+		 * anything anyway.
+		 */
+		if (!is_error_page(page)) {
+			vmx->nested.apic_access_page = page;
+			hpa = page_to_phys(vmx->nested.apic_access_page);
+			vmcs_write64(APIC_ACCESS_ADDR, hpa);
+		} else {
+			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
+					SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
+		}
+	}
+
+	if (nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW)) {
+		if (vmx->nested.virtual_apic_page) { /* shouldn't happen */
+			kvm_release_page_dirty(vmx->nested.virtual_apic_page);
+			vmx->nested.virtual_apic_page = NULL;
+		}
+		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->virtual_apic_page_addr);
+
+		/*
+		 * If translation failed, VM entry will fail because
+		 * prepare_vmcs02 set VIRTUAL_APIC_PAGE_ADDR to -1ull.
+		 * Failing the vm entry is _not_ what the processor
+		 * does but it's basically the only possibility we
+		 * have.  We could still enter the guest if CR8 load
+		 * exits are enabled, CR8 store exits are enabled, and
+		 * virtualize APIC access is disabled; in this case
+		 * the processor would never use the TPR shadow and we
+		 * could simply clear the bit from the execution
+		 * control.  But such a configuration is useless, so
+		 * let's keep the code simple.
+		 */
+		if (!is_error_page(page)) {
+			vmx->nested.virtual_apic_page = page;
+			hpa = page_to_phys(vmx->nested.virtual_apic_page);
+			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, hpa);
+		}
+	}
+
+	if (nested_cpu_has_posted_intr(vmcs12)) {
+		if (vmx->nested.pi_desc_page) { /* shouldn't happen */
+			kunmap(vmx->nested.pi_desc_page);
+			kvm_release_page_dirty(vmx->nested.pi_desc_page);
+			vmx->nested.pi_desc_page = NULL;
+			vmx->nested.pi_desc = NULL;
+			vmcs_write64(POSTED_INTR_DESC_ADDR, -1ull);
+		}
+		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->posted_intr_desc_addr);
+		if (is_error_page(page))
+			return;
+		vmx->nested.pi_desc_page = page;
+		vmx->nested.pi_desc = kmap(vmx->nested.pi_desc_page);
+		vmx->nested.pi_desc =
+			(struct pi_desc *)((void *)vmx->nested.pi_desc +
+			(unsigned long)(vmcs12->posted_intr_desc_addr &
+			(PAGE_SIZE - 1)));
+		vmcs_write64(POSTED_INTR_DESC_ADDR,
+			page_to_phys(vmx->nested.pi_desc_page) +
+			(unsigned long)(vmcs12->posted_intr_desc_addr &
+			(PAGE_SIZE - 1)));
+	}
+	if (nested_vmx_prepare_msr_bitmap(vcpu, vmcs12))
+		vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
+			      CPU_BASED_USE_MSR_BITMAPS);
+	else
+		vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+				CPU_BASED_USE_MSR_BITMAPS);
+}
+
+/*
+ * Intel's VMX Instruction Reference specifies a common set of prerequisites
+ * for running VMX instructions (except VMXON, whose prerequisites are
+ * slightly different). It also specifies what exception to inject otherwise.
+ * Note that many of these exceptions have priority over VM exits, so they
+ * don't have to be checked again here.
+ */
+static int nested_vmx_check_permission(struct kvm_vcpu *vcpu)
+{
+	if (!to_vmx(vcpu)->nested.vmxon) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 0;
+	}
+
+	if (vmx_get_cpl(vcpu)) {
+		kvm_inject_gp(vcpu, 0);
+		return 0;
+	}
+
+	return 1;
+}
+
+static u8 vmx_has_apicv_interrupt(struct kvm_vcpu *vcpu)
+{
+	u8 rvi = vmx_get_rvi();
+	u8 vppr = kvm_lapic_get_reg(vcpu->arch.apic, APIC_PROCPRI);
+
+	return ((rvi & 0xf0) > (vppr & 0xf0));
+}
+
+static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
+				   struct vmcs12 *vmcs12);
+
+/*
+ * If from_vmentry is false, this is being called from state restore (either RSM
+ * or KVM_SET_NESTED_STATE).  Otherwise it's called from vmlaunch/vmresume.
++ *
++ * Returns:
++ *   0 - success, i.e. proceed with actual VMEnter
++ *   1 - consistency check VMExit
++ *  -1 - consistency check VMFail
+ */
+int nested_vmx_enter_non_root_mode(struct kvm_vcpu *vcpu, bool from_vmentry)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	bool evaluate_pending_interrupts;
+	u32 exit_reason = EXIT_REASON_INVALID_STATE;
+	u32 exit_qual;
+
+	evaluate_pending_interrupts = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) &
+		(CPU_BASED_VIRTUAL_INTR_PENDING | CPU_BASED_VIRTUAL_NMI_PENDING);
+	if (likely(!evaluate_pending_interrupts) && kvm_vcpu_apicv_active(vcpu))
+		evaluate_pending_interrupts |= vmx_has_apicv_interrupt(vcpu);
+
+	if (!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS))
+		vmx->nested.vmcs01_debugctl = vmcs_read64(GUEST_IA32_DEBUGCTL);
+	if (kvm_mpx_supported() &&
+		!(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS))
+		vmx->nested.vmcs01_guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS);
+
+	vmx_switch_vmcs(vcpu, &vmx->nested.vmcs02);
+
+	prepare_vmcs02_early(vmx, vmcs12);
+
+	if (from_vmentry) {
+		nested_get_vmcs12_pages(vcpu);
+
+		if (nested_vmx_check_vmentry_hw(vcpu)) {
+			vmx_switch_vmcs(vcpu, &vmx->vmcs01);
+			return -1;
+		}
+
+		if (nested_vmx_check_vmentry_postreqs(vcpu, vmcs12, &exit_qual))
+			goto vmentry_fail_vmexit;
+	}
+
+	enter_guest_mode(vcpu);
+	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
+		vcpu->arch.tsc_offset += vmcs12->tsc_offset;
+
+	if (prepare_vmcs02(vcpu, vmcs12, &exit_qual))
+		goto vmentry_fail_vmexit_guest_mode;
+
+	if (from_vmentry) {
+		exit_reason = EXIT_REASON_MSR_LOAD_FAIL;
+		exit_qual = nested_vmx_load_msr(vcpu,
+						vmcs12->vm_entry_msr_load_addr,
+						vmcs12->vm_entry_msr_load_count);
+		if (exit_qual)
+			goto vmentry_fail_vmexit_guest_mode;
+	} else {
+		/*
+		 * The MMU is not initialized to point at the right entities yet and
+		 * "get pages" would need to read data from the guest (i.e. we will
+		 * need to perform gpa to hpa translation). Request a call
+		 * to nested_get_vmcs12_pages before the next VM-entry.  The MSRs
+		 * have already been set at vmentry time and should not be reset.
+		 */
+		kvm_make_request(KVM_REQ_GET_VMCS12_PAGES, vcpu);
+	}
+
+	/*
+	 * If L1 had a pending IRQ/NMI until it executed
+	 * VMLAUNCH/VMRESUME which wasn't delivered because it was
+	 * disallowed (e.g. interrupts disabled), L0 needs to
+	 * evaluate if this pending event should cause an exit from L2
+	 * to L1 or delivered directly to L2 (e.g. In case L1 don't
+	 * intercept EXTERNAL_INTERRUPT).
+	 *
+	 * Usually this would be handled by the processor noticing an
+	 * IRQ/NMI window request, or checking RVI during evaluation of
+	 * pending virtual interrupts.  However, this setting was done
+	 * on VMCS01 and now VMCS02 is active instead. Thus, we force L0
+	 * to perform pending event evaluation by requesting a KVM_REQ_EVENT.
+	 */
+	if (unlikely(evaluate_pending_interrupts))
+		kvm_make_request(KVM_REQ_EVENT, vcpu);
+
+	/*
+	 * Note no nested_vmx_succeed or nested_vmx_fail here. At this point
+	 * we are no longer running L1, and VMLAUNCH/VMRESUME has not yet
+	 * returned as far as L1 is concerned. It will only return (and set
+	 * the success flag) when L2 exits (see nested_vmx_vmexit()).
+	 */
+	return 0;
+
+	/*
+	 * A failed consistency check that leads to a VMExit during L1's
+	 * VMEnter to L2 is a variation of a normal VMexit, as explained in
+	 * 26.7 "VM-entry failures during or after loading guest state".
+	 */
+vmentry_fail_vmexit_guest_mode:
+	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
+		vcpu->arch.tsc_offset -= vmcs12->tsc_offset;
+	leave_guest_mode(vcpu);
+
+vmentry_fail_vmexit:
+	vmx_switch_vmcs(vcpu, &vmx->vmcs01);
+
+	if (!from_vmentry)
+		return 1;
+
+	load_vmcs12_host_state(vcpu, vmcs12);
+	vmcs12->vm_exit_reason = exit_reason | VMX_EXIT_REASONS_FAILED_VMENTRY;
+	vmcs12->exit_qualification = exit_qual;
+	if (enable_shadow_vmcs || vmx->nested.hv_evmcs)
+		vmx->nested.need_vmcs12_sync = true;
+	return 1;
+}
+
+/*
+ * nested_vmx_run() handles a nested entry, i.e., a VMLAUNCH or VMRESUME on L1
+ * for running an L2 nested guest.
+ */
+static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
+{
+	struct vmcs12 *vmcs12;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 interrupt_shadow = vmx_get_interrupt_shadow(vcpu);
+	int ret;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (!nested_vmx_handle_enlightened_vmptrld(vcpu, true))
+		return 1;
+
+	if (!vmx->nested.hv_evmcs && vmx->nested.current_vmptr == -1ull)
+		return nested_vmx_failInvalid(vcpu);
+
+	vmcs12 = get_vmcs12(vcpu);
+
+	/*
+	 * Can't VMLAUNCH or VMRESUME a shadow VMCS. Despite the fact
+	 * that there *is* a valid VMCS pointer, RFLAGS.CF is set
+	 * rather than RFLAGS.ZF, and no error number is stored to the
+	 * VM-instruction error field.
+	 */
+	if (vmcs12->hdr.shadow_vmcs)
+		return nested_vmx_failInvalid(vcpu);
+
+	if (vmx->nested.hv_evmcs) {
+		copy_enlightened_to_vmcs12(vmx);
+		/* Enlightened VMCS doesn't have launch state */
+		vmcs12->launch_state = !launch;
+	} else if (enable_shadow_vmcs) {
+		copy_shadow_to_vmcs12(vmx);
+	}
+
+	/*
+	 * The nested entry process starts with enforcing various prerequisites
+	 * on vmcs12 as required by the Intel SDM, and act appropriately when
+	 * they fail: As the SDM explains, some conditions should cause the
+	 * instruction to fail, while others will cause the instruction to seem
+	 * to succeed, but return an EXIT_REASON_INVALID_STATE.
+	 * To speed up the normal (success) code path, we should avoid checking
+	 * for misconfigurations which will anyway be caught by the processor
+	 * when using the merged vmcs02.
+	 */
+	if (interrupt_shadow & KVM_X86_SHADOW_INT_MOV_SS)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_ENTRY_EVENTS_BLOCKED_BY_MOV_SS);
+
+	if (vmcs12->launch_state == launch)
+		return nested_vmx_failValid(vcpu,
+			launch ? VMXERR_VMLAUNCH_NONCLEAR_VMCS
+			       : VMXERR_VMRESUME_NONLAUNCHED_VMCS);
+
+	ret = nested_vmx_check_vmentry_prereqs(vcpu, vmcs12);
+	if (ret)
+		return nested_vmx_failValid(vcpu, ret);
+
+	/*
+	 * We're finally done with prerequisite checking, and can start with
+	 * the nested entry.
+	 */
+	vmx->nested.nested_run_pending = 1;
+	ret = nested_vmx_enter_non_root_mode(vcpu, true);
+	vmx->nested.nested_run_pending = !ret;
+	if (ret > 0)
+		return 1;
+	else if (ret)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_ENTRY_INVALID_CONTROL_FIELD);
+
+	/* Hide L1D cache contents from the nested guest.  */
+	vmx->vcpu.arch.l1tf_flush_l1d = true;
+
+	/*
+	 * Must happen outside of nested_vmx_enter_non_root_mode() as it will
+	 * also be used as part of restoring nVMX state for
+	 * snapshot restore (migration).
+	 *
+	 * In this flow, it is assumed that vmcs12 cache was
+	 * trasferred as part of captured nVMX state and should
+	 * therefore not be read from guest memory (which may not
+	 * exist on destination host yet).
+	 */
+	nested_cache_shadow_vmcs12(vcpu, vmcs12);
+
+	/*
+	 * If we're entering a halted L2 vcpu and the L2 vcpu won't be
+	 * awakened by event injection or by an NMI-window VM-exit or
+	 * by an interrupt-window VM-exit, halt the vcpu.
+	 */
+	if ((vmcs12->guest_activity_state == GUEST_ACTIVITY_HLT) &&
+	    !(vmcs12->vm_entry_intr_info_field & INTR_INFO_VALID_MASK) &&
+	    !(vmcs12->cpu_based_vm_exec_control & CPU_BASED_VIRTUAL_NMI_PENDING) &&
+	    !((vmcs12->cpu_based_vm_exec_control & CPU_BASED_VIRTUAL_INTR_PENDING) &&
+	      (vmcs12->guest_rflags & X86_EFLAGS_IF))) {
+		vmx->nested.nested_run_pending = 0;
+		return kvm_vcpu_halt(vcpu);
+	}
+	return 1;
+}
+
+/*
+ * On a nested exit from L2 to L1, vmcs12.guest_cr0 might not be up-to-date
+ * because L2 may have changed some cr0 bits directly (CRO_GUEST_HOST_MASK).
+ * This function returns the new value we should put in vmcs12.guest_cr0.
+ * It's not enough to just return the vmcs02 GUEST_CR0. Rather,
+ *  1. Bits that neither L0 nor L1 trapped, were set directly by L2 and are now
+ *     available in vmcs02 GUEST_CR0. (Note: It's enough to check that L0
+ *     didn't trap the bit, because if L1 did, so would L0).
+ *  2. Bits that L1 asked to trap (and therefore L0 also did) could not have
+ *     been modified by L2, and L1 knows it. So just leave the old value of
+ *     the bit from vmcs12.guest_cr0. Note that the bit from vmcs02 GUEST_CR0
+ *     isn't relevant, because if L0 traps this bit it can set it to anything.
+ *  3. Bits that L1 didn't trap, but L0 did. L1 believes the guest could have
+ *     changed these bits, and therefore they need to be updated, but L0
+ *     didn't necessarily allow them to be changed in GUEST_CR0 - and rather
+ *     put them in vmcs02 CR0_READ_SHADOW. So take these bits from there.
+ */
+static inline unsigned long
+vmcs12_guest_cr0(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+{
+	return
+	/*1*/	(vmcs_readl(GUEST_CR0) & vcpu->arch.cr0_guest_owned_bits) |
+	/*2*/	(vmcs12->guest_cr0 & vmcs12->cr0_guest_host_mask) |
+	/*3*/	(vmcs_readl(CR0_READ_SHADOW) & ~(vmcs12->cr0_guest_host_mask |
+			vcpu->arch.cr0_guest_owned_bits));
+}
+
+static inline unsigned long
+vmcs12_guest_cr4(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+{
+	return
+	/*1*/	(vmcs_readl(GUEST_CR4) & vcpu->arch.cr4_guest_owned_bits) |
+	/*2*/	(vmcs12->guest_cr4 & vmcs12->cr4_guest_host_mask) |
+	/*3*/	(vmcs_readl(CR4_READ_SHADOW) & ~(vmcs12->cr4_guest_host_mask |
+			vcpu->arch.cr4_guest_owned_bits));
+}
+
+static void vmcs12_save_pending_event(struct kvm_vcpu *vcpu,
+				      struct vmcs12 *vmcs12)
+{
+	u32 idt_vectoring;
+	unsigned int nr;
+
+	if (vcpu->arch.exception.injected) {
+		nr = vcpu->arch.exception.nr;
+		idt_vectoring = nr | VECTORING_INFO_VALID_MASK;
+
+		if (kvm_exception_is_soft(nr)) {
+			vmcs12->vm_exit_instruction_len =
+				vcpu->arch.event_exit_inst_len;
+			idt_vectoring |= INTR_TYPE_SOFT_EXCEPTION;
+		} else
+			idt_vectoring |= INTR_TYPE_HARD_EXCEPTION;
+
+		if (vcpu->arch.exception.has_error_code) {
+			idt_vectoring |= VECTORING_INFO_DELIVER_CODE_MASK;
+			vmcs12->idt_vectoring_error_code =
+				vcpu->arch.exception.error_code;
+		}
+
+		vmcs12->idt_vectoring_info_field = idt_vectoring;
+	} else if (vcpu->arch.nmi_injected) {
+		vmcs12->idt_vectoring_info_field =
+			INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR;
+	} else if (vcpu->arch.interrupt.injected) {
+		nr = vcpu->arch.interrupt.nr;
+		idt_vectoring = nr | VECTORING_INFO_VALID_MASK;
+
+		if (vcpu->arch.interrupt.soft) {
+			idt_vectoring |= INTR_TYPE_SOFT_INTR;
+			vmcs12->vm_entry_instruction_len =
+				vcpu->arch.event_exit_inst_len;
+		} else
+			idt_vectoring |= INTR_TYPE_EXT_INTR;
+
+		vmcs12->idt_vectoring_info_field = idt_vectoring;
+	}
+}
+
+
+static void nested_mark_vmcs12_pages_dirty(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	gfn_t gfn;
+
+	/*
+	 * Don't need to mark the APIC access page dirty; it is never
+	 * written to by the CPU during APIC virtualization.
+	 */
+
+	if (nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW)) {
+		gfn = vmcs12->virtual_apic_page_addr >> PAGE_SHIFT;
+		kvm_vcpu_mark_page_dirty(vcpu, gfn);
+	}
+
+	if (nested_cpu_has_posted_intr(vmcs12)) {
+		gfn = vmcs12->posted_intr_desc_addr >> PAGE_SHIFT;
+		kvm_vcpu_mark_page_dirty(vcpu, gfn);
+	}
+}
+
+static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int max_irr;
+	void *vapic_page;
+	u16 status;
+
+	if (!vmx->nested.pi_desc || !vmx->nested.pi_pending)
+		return;
+
+	vmx->nested.pi_pending = false;
+	if (!pi_test_and_clear_on(vmx->nested.pi_desc))
+		return;
+
+	max_irr = find_last_bit((unsigned long *)vmx->nested.pi_desc->pir, 256);
+	if (max_irr != 256) {
+		vapic_page = kmap(vmx->nested.virtual_apic_page);
+		__kvm_apic_update_irr(vmx->nested.pi_desc->pir,
+			vapic_page, &max_irr);
+		kunmap(vmx->nested.virtual_apic_page);
+
+		status = vmcs_read16(GUEST_INTR_STATUS);
+		if ((u8)max_irr > ((u8)status & 0xff)) {
+			status &= ~0xff;
+			status |= (u8)max_irr;
+			vmcs_write16(GUEST_INTR_STATUS, status);
+		}
+	}
+
+	nested_mark_vmcs12_pages_dirty(vcpu);
+}
+
+static void nested_vmx_inject_exception_vmexit(struct kvm_vcpu *vcpu,
+					       unsigned long exit_qual)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	unsigned int nr = vcpu->arch.exception.nr;
+	u32 intr_info = nr | INTR_INFO_VALID_MASK;
+
+	if (vcpu->arch.exception.has_error_code) {
+		vmcs12->vm_exit_intr_error_code = vcpu->arch.exception.error_code;
+		intr_info |= INTR_INFO_DELIVER_CODE_MASK;
+	}
+
+	if (kvm_exception_is_soft(nr))
+		intr_info |= INTR_TYPE_SOFT_EXCEPTION;
+	else
+		intr_info |= INTR_TYPE_HARD_EXCEPTION;
+
+	if (!(vmcs12->idt_vectoring_info_field & VECTORING_INFO_VALID_MASK) &&
+	    vmx_get_nmi_mask(vcpu))
+		intr_info |= INTR_INFO_UNBLOCK_NMI;
+
+	nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI, intr_info, exit_qual);
+}
+
+static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long exit_qual;
+	bool block_nested_events =
+	    vmx->nested.nested_run_pending || kvm_event_needs_reinjection(vcpu);
+
+	if (vcpu->arch.exception.pending &&
+		nested_vmx_check_exception(vcpu, &exit_qual)) {
+		if (block_nested_events)
+			return -EBUSY;
+		nested_vmx_inject_exception_vmexit(vcpu, exit_qual);
+		return 0;
+	}
+
+	if (nested_cpu_has_preemption_timer(get_vmcs12(vcpu)) &&
+	    vmx->nested.preemption_timer_expired) {
+		if (block_nested_events)
+			return -EBUSY;
+		nested_vmx_vmexit(vcpu, EXIT_REASON_PREEMPTION_TIMER, 0, 0);
+		return 0;
+	}
+
+	if (vcpu->arch.nmi_pending && nested_exit_on_nmi(vcpu)) {
+		if (block_nested_events)
+			return -EBUSY;
+		nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
+				  NMI_VECTOR | INTR_TYPE_NMI_INTR |
+				  INTR_INFO_VALID_MASK, 0);
+		/*
+		 * The NMI-triggered VM exit counts as injection:
+		 * clear this one and block further NMIs.
+		 */
+		vcpu->arch.nmi_pending = 0;
+		vmx_set_nmi_mask(vcpu, true);
+		return 0;
+	}
+
+	if ((kvm_cpu_has_interrupt(vcpu) || external_intr) &&
+	    nested_exit_on_intr(vcpu)) {
+		if (block_nested_events)
+			return -EBUSY;
+		nested_vmx_vmexit(vcpu, EXIT_REASON_EXTERNAL_INTERRUPT, 0, 0);
+		return 0;
+	}
+
+	vmx_complete_nested_posted_interrupt(vcpu);
+	return 0;
+}
+
+static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
+{
+	ktime_t remaining =
+		hrtimer_get_remaining(&to_vmx(vcpu)->nested.preemption_timer);
+	u64 value;
+
+	if (ktime_to_ns(remaining) <= 0)
+		return 0;
+
+	value = ktime_to_ns(remaining) * vcpu->arch.virtual_tsc_khz;
+	do_div(value, 1000000);
+	return value >> VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE;
+}
+
+/*
+ * Update the guest state fields of vmcs12 to reflect changes that
+ * occurred while L2 was running. (The "IA-32e mode guest" bit of the
+ * VM-entry controls is also updated, since this is really a guest
+ * state bit.)
+ */
+static void sync_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+{
+	vmcs12->guest_cr0 = vmcs12_guest_cr0(vcpu, vmcs12);
+	vmcs12->guest_cr4 = vmcs12_guest_cr4(vcpu, vmcs12);
+
+	vmcs12->guest_rsp = kvm_register_read(vcpu, VCPU_REGS_RSP);
+	vmcs12->guest_rip = kvm_register_read(vcpu, VCPU_REGS_RIP);
+	vmcs12->guest_rflags = vmcs_readl(GUEST_RFLAGS);
+
+	vmcs12->guest_es_selector = vmcs_read16(GUEST_ES_SELECTOR);
+	vmcs12->guest_cs_selector = vmcs_read16(GUEST_CS_SELECTOR);
+	vmcs12->guest_ss_selector = vmcs_read16(GUEST_SS_SELECTOR);
+	vmcs12->guest_ds_selector = vmcs_read16(GUEST_DS_SELECTOR);
+	vmcs12->guest_fs_selector = vmcs_read16(GUEST_FS_SELECTOR);
+	vmcs12->guest_gs_selector = vmcs_read16(GUEST_GS_SELECTOR);
+	vmcs12->guest_ldtr_selector = vmcs_read16(GUEST_LDTR_SELECTOR);
+	vmcs12->guest_tr_selector = vmcs_read16(GUEST_TR_SELECTOR);
+	vmcs12->guest_es_limit = vmcs_read32(GUEST_ES_LIMIT);
+	vmcs12->guest_cs_limit = vmcs_read32(GUEST_CS_LIMIT);
+	vmcs12->guest_ss_limit = vmcs_read32(GUEST_SS_LIMIT);
+	vmcs12->guest_ds_limit = vmcs_read32(GUEST_DS_LIMIT);
+	vmcs12->guest_fs_limit = vmcs_read32(GUEST_FS_LIMIT);
+	vmcs12->guest_gs_limit = vmcs_read32(GUEST_GS_LIMIT);
+	vmcs12->guest_ldtr_limit = vmcs_read32(GUEST_LDTR_LIMIT);
+	vmcs12->guest_tr_limit = vmcs_read32(GUEST_TR_LIMIT);
+	vmcs12->guest_gdtr_limit = vmcs_read32(GUEST_GDTR_LIMIT);
+	vmcs12->guest_idtr_limit = vmcs_read32(GUEST_IDTR_LIMIT);
+	vmcs12->guest_es_ar_bytes = vmcs_read32(GUEST_ES_AR_BYTES);
+	vmcs12->guest_cs_ar_bytes = vmcs_read32(GUEST_CS_AR_BYTES);
+	vmcs12->guest_ss_ar_bytes = vmcs_read32(GUEST_SS_AR_BYTES);
+	vmcs12->guest_ds_ar_bytes = vmcs_read32(GUEST_DS_AR_BYTES);
+	vmcs12->guest_fs_ar_bytes = vmcs_read32(GUEST_FS_AR_BYTES);
+	vmcs12->guest_gs_ar_bytes = vmcs_read32(GUEST_GS_AR_BYTES);
+	vmcs12->guest_ldtr_ar_bytes = vmcs_read32(GUEST_LDTR_AR_BYTES);
+	vmcs12->guest_tr_ar_bytes = vmcs_read32(GUEST_TR_AR_BYTES);
+	vmcs12->guest_es_base = vmcs_readl(GUEST_ES_BASE);
+	vmcs12->guest_cs_base = vmcs_readl(GUEST_CS_BASE);
+	vmcs12->guest_ss_base = vmcs_readl(GUEST_SS_BASE);
+	vmcs12->guest_ds_base = vmcs_readl(GUEST_DS_BASE);
+	vmcs12->guest_fs_base = vmcs_readl(GUEST_FS_BASE);
+	vmcs12->guest_gs_base = vmcs_readl(GUEST_GS_BASE);
+	vmcs12->guest_ldtr_base = vmcs_readl(GUEST_LDTR_BASE);
+	vmcs12->guest_tr_base = vmcs_readl(GUEST_TR_BASE);
+	vmcs12->guest_gdtr_base = vmcs_readl(GUEST_GDTR_BASE);
+	vmcs12->guest_idtr_base = vmcs_readl(GUEST_IDTR_BASE);
+
+	vmcs12->guest_interruptibility_info =
+		vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+	vmcs12->guest_pending_dbg_exceptions =
+		vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS);
+	if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
+		vmcs12->guest_activity_state = GUEST_ACTIVITY_HLT;
+	else
+		vmcs12->guest_activity_state = GUEST_ACTIVITY_ACTIVE;
+
+	if (nested_cpu_has_preemption_timer(vmcs12)) {
+		if (vmcs12->vm_exit_controls &
+		    VM_EXIT_SAVE_VMX_PREEMPTION_TIMER)
+			vmcs12->vmx_preemption_timer_value =
+				vmx_get_preemption_timer_value(vcpu);
+		hrtimer_cancel(&to_vmx(vcpu)->nested.preemption_timer);
+	}
+
+	/*
+	 * In some cases (usually, nested EPT), L2 is allowed to change its
+	 * own CR3 without exiting. If it has changed it, we must keep it.
+	 * Of course, if L0 is using shadow page tables, GUEST_CR3 was defined
+	 * by L0, not L1 or L2, so we mustn't unconditionally copy it to vmcs12.
+	 *
+	 * Additionally, restore L2's PDPTR to vmcs12.
+	 */
+	if (enable_ept) {
+		vmcs12->guest_cr3 = vmcs_readl(GUEST_CR3);
+		vmcs12->guest_pdptr0 = vmcs_read64(GUEST_PDPTR0);
+		vmcs12->guest_pdptr1 = vmcs_read64(GUEST_PDPTR1);
+		vmcs12->guest_pdptr2 = vmcs_read64(GUEST_PDPTR2);
+		vmcs12->guest_pdptr3 = vmcs_read64(GUEST_PDPTR3);
+	}
+
+	vmcs12->guest_linear_address = vmcs_readl(GUEST_LINEAR_ADDRESS);
+
+	if (nested_cpu_has_vid(vmcs12))
+		vmcs12->guest_intr_status = vmcs_read16(GUEST_INTR_STATUS);
+
+	vmcs12->vm_entry_controls =
+		(vmcs12->vm_entry_controls & ~VM_ENTRY_IA32E_MODE) |
+		(vm_entry_controls_get(to_vmx(vcpu)) & VM_ENTRY_IA32E_MODE);
+
+	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_DEBUG_CONTROLS) {
+		kvm_get_dr(vcpu, 7, (unsigned long *)&vmcs12->guest_dr7);
+		vmcs12->guest_ia32_debugctl = vmcs_read64(GUEST_IA32_DEBUGCTL);
+	}
+
+	/* TODO: These cannot have changed unless we have MSR bitmaps and
+	 * the relevant bit asks not to trap the change */
+	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_IA32_PAT)
+		vmcs12->guest_ia32_pat = vmcs_read64(GUEST_IA32_PAT);
+	if (vmcs12->vm_exit_controls & VM_EXIT_SAVE_IA32_EFER)
+		vmcs12->guest_ia32_efer = vcpu->arch.efer;
+	vmcs12->guest_sysenter_cs = vmcs_read32(GUEST_SYSENTER_CS);
+	vmcs12->guest_sysenter_esp = vmcs_readl(GUEST_SYSENTER_ESP);
+	vmcs12->guest_sysenter_eip = vmcs_readl(GUEST_SYSENTER_EIP);
+	if (kvm_mpx_supported())
+		vmcs12->guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS);
+}
+
+/*
+ * prepare_vmcs12 is part of what we need to do when the nested L2 guest exits
+ * and we want to prepare to run its L1 parent. L1 keeps a vmcs for L2 (vmcs12),
+ * and this function updates it to reflect the changes to the guest state while
+ * L2 was running (and perhaps made some exits which were handled directly by L0
+ * without going back to L1), and to reflect the exit reason.
+ * Note that we do not have to copy here all VMCS fields, just those that
+ * could have changed by the L2 guest or the exit - i.e., the guest-state and
+ * exit-information fields only. Other fields are modified by L1 with VMWRITE,
+ * which already writes to vmcs12 directly.
+ */
+static void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
+			   u32 exit_reason, u32 exit_intr_info,
+			   unsigned long exit_qualification)
+{
+	/* update guest state fields: */
+	sync_vmcs12(vcpu, vmcs12);
+
+	/* update exit information fields: */
+
+	vmcs12->vm_exit_reason = exit_reason;
+	vmcs12->exit_qualification = exit_qualification;
+	vmcs12->vm_exit_intr_info = exit_intr_info;
+
+	vmcs12->idt_vectoring_info_field = 0;
+	vmcs12->vm_exit_instruction_len = vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+	vmcs12->vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+
+	if (!(vmcs12->vm_exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY)) {
+		vmcs12->launch_state = 1;
+
+		/* vm_entry_intr_info_field is cleared on exit. Emulate this
+		 * instead of reading the real value. */
+		vmcs12->vm_entry_intr_info_field &= ~INTR_INFO_VALID_MASK;
+
+		/*
+		 * Transfer the event that L0 or L1 may wanted to inject into
+		 * L2 to IDT_VECTORING_INFO_FIELD.
+		 */
+		vmcs12_save_pending_event(vcpu, vmcs12);
+
+		/*
+		 * According to spec, there's no need to store the guest's
+		 * MSRs if the exit is due to a VM-entry failure that occurs
+		 * during or after loading the guest state. Since this exit
+		 * does not fall in that category, we need to save the MSRs.
+		 */
+		if (nested_vmx_store_msr(vcpu,
+					 vmcs12->vm_exit_msr_store_addr,
+					 vmcs12->vm_exit_msr_store_count))
+			nested_vmx_abort(vcpu,
+					 VMX_ABORT_SAVE_GUEST_MSR_FAIL);
+	}
+
+	/*
+	 * Drop what we picked up for L2 via vmx_complete_interrupts. It is
+	 * preserved above and would only end up incorrectly in L1.
+	 */
+	vcpu->arch.nmi_injected = false;
+	kvm_clear_exception_queue(vcpu);
+	kvm_clear_interrupt_queue(vcpu);
+}
+
+/*
+ * A part of what we need to when the nested L2 guest exits and we want to
+ * run its L1 parent, is to reset L1's guest state to the host state specified
+ * in vmcs12.
+ * This function is to be called not only on normal nested exit, but also on
+ * a nested entry failure, as explained in Intel's spec, 3B.23.7 ("VM-Entry
+ * Failures During or After Loading Guest State").
+ * This function should be called when the active VMCS is L1's (vmcs01).
+ */
+static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
+				   struct vmcs12 *vmcs12)
+{
+	struct kvm_segment seg;
+	u32 entry_failure_code;
+
+	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_EFER)
+		vcpu->arch.efer = vmcs12->host_ia32_efer;
+	else if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
+		vcpu->arch.efer |= (EFER_LMA | EFER_LME);
+	else
+		vcpu->arch.efer &= ~(EFER_LMA | EFER_LME);
+	vmx_set_efer(vcpu, vcpu->arch.efer);
+
+	kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->host_rsp);
+	kvm_register_write(vcpu, VCPU_REGS_RIP, vmcs12->host_rip);
+	vmx_set_rflags(vcpu, X86_EFLAGS_FIXED);
+	vmx_set_interrupt_shadow(vcpu, 0);
+
+	/*
+	 * Note that calling vmx_set_cr0 is important, even if cr0 hasn't
+	 * actually changed, because vmx_set_cr0 refers to efer set above.
+	 *
+	 * CR0_GUEST_HOST_MASK is already set in the original vmcs01
+	 * (KVM doesn't change it);
+	 */
+	vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS;
+	vmx_set_cr0(vcpu, vmcs12->host_cr0);
+
+	/* Same as above - no reason to call set_cr4_guest_host_mask().  */
+	vcpu->arch.cr4_guest_owned_bits = ~vmcs_readl(CR4_GUEST_HOST_MASK);
+	vmx_set_cr4(vcpu, vmcs12->host_cr4);
+
+	nested_ept_uninit_mmu_context(vcpu);
+
+	/*
+	 * Only PDPTE load can fail as the value of cr3 was checked on entry and
+	 * couldn't have changed.
+	 */
+	if (nested_vmx_load_cr3(vcpu, vmcs12->host_cr3, false, &entry_failure_code))
+		nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_PDPTE_FAIL);
+
+	if (!enable_ept)
+		vcpu->arch.walk_mmu->inject_page_fault = kvm_inject_page_fault;
+
+	/*
+	 * If vmcs01 doesn't use VPID, CPU flushes TLB on every
+	 * VMEntry/VMExit. Thus, no need to flush TLB.
+	 *
+	 * If vmcs12 doesn't use VPID, L1 expects TLB to be
+	 * flushed on every VMEntry/VMExit.
+	 *
+	 * Otherwise, we can preserve TLB entries as long as we are
+	 * able to tag L1 TLB entries differently than L2 TLB entries.
+	 *
+	 * If vmcs12 uses EPT, we need to execute this flush on EPTP01
+	 * and therefore we request the TLB flush to happen only after VMCS EPTP
+	 * has been set by KVM_REQ_LOAD_CR3.
+	 */
+	if (enable_vpid &&
+	    (!nested_cpu_has_vpid(vmcs12) || !nested_has_guest_tlb_tag(vcpu))) {
+		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+	}
+
+	vmcs_write32(GUEST_SYSENTER_CS, vmcs12->host_ia32_sysenter_cs);
+	vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->host_ia32_sysenter_esp);
+	vmcs_writel(GUEST_SYSENTER_EIP, vmcs12->host_ia32_sysenter_eip);
+	vmcs_writel(GUEST_IDTR_BASE, vmcs12->host_idtr_base);
+	vmcs_writel(GUEST_GDTR_BASE, vmcs12->host_gdtr_base);
+	vmcs_write32(GUEST_IDTR_LIMIT, 0xFFFF);
+	vmcs_write32(GUEST_GDTR_LIMIT, 0xFFFF);
+
+	/* If not VM_EXIT_CLEAR_BNDCFGS, the L2 value propagates to L1.  */
+	if (vmcs12->vm_exit_controls & VM_EXIT_CLEAR_BNDCFGS)
+		vmcs_write64(GUEST_BNDCFGS, 0);
+
+	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_PAT) {
+		vmcs_write64(GUEST_IA32_PAT, vmcs12->host_ia32_pat);
+		vcpu->arch.pat = vmcs12->host_ia32_pat;
+	}
+	if (vmcs12->vm_exit_controls & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
+		vmcs_write64(GUEST_IA32_PERF_GLOBAL_CTRL,
+			vmcs12->host_ia32_perf_global_ctrl);
+
+	/* Set L1 segment info according to Intel SDM
+	    27.5.2 Loading Host Segment and Descriptor-Table Registers */
+	seg = (struct kvm_segment) {
+		.base = 0,
+		.limit = 0xFFFFFFFF,
+		.selector = vmcs12->host_cs_selector,
+		.type = 11,
+		.present = 1,
+		.s = 1,
+		.g = 1
+	};
+	if (vmcs12->vm_exit_controls & VM_EXIT_HOST_ADDR_SPACE_SIZE)
+		seg.l = 1;
+	else
+		seg.db = 1;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_CS);
+	seg = (struct kvm_segment) {
+		.base = 0,
+		.limit = 0xFFFFFFFF,
+		.type = 3,
+		.present = 1,
+		.s = 1,
+		.db = 1,
+		.g = 1
+	};
+	seg.selector = vmcs12->host_ds_selector;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_DS);
+	seg.selector = vmcs12->host_es_selector;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_ES);
+	seg.selector = vmcs12->host_ss_selector;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_SS);
+	seg.selector = vmcs12->host_fs_selector;
+	seg.base = vmcs12->host_fs_base;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_FS);
+	seg.selector = vmcs12->host_gs_selector;
+	seg.base = vmcs12->host_gs_base;
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_GS);
+	seg = (struct kvm_segment) {
+		.base = vmcs12->host_tr_base,
+		.limit = 0x67,
+		.selector = vmcs12->host_tr_selector,
+		.type = 11,
+		.present = 1
+	};
+	vmx_set_segment(vcpu, &seg, VCPU_SREG_TR);
+
+	kvm_set_dr(vcpu, 7, 0x400);
+	vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmx_update_msr_bitmap(vcpu);
+
+	if (nested_vmx_load_msr(vcpu, vmcs12->vm_exit_msr_load_addr,
+				vmcs12->vm_exit_msr_load_count))
+		nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_MSR_FAIL);
+}
+
+static inline u64 nested_vmx_get_vmcs01_guest_efer(struct vcpu_vmx *vmx)
+{
+	struct shared_msr_entry *efer_msr;
+	unsigned int i;
+
+	if (vm_entry_controls_get(vmx) & VM_ENTRY_LOAD_IA32_EFER)
+		return vmcs_read64(GUEST_IA32_EFER);
+
+	if (cpu_has_load_ia32_efer())
+		return host_efer;
+
+	for (i = 0; i < vmx->msr_autoload.guest.nr; ++i) {
+		if (vmx->msr_autoload.guest.val[i].index == MSR_EFER)
+			return vmx->msr_autoload.guest.val[i].value;
+	}
+
+	efer_msr = find_msr_entry(vmx, MSR_EFER);
+	if (efer_msr)
+		return efer_msr->data;
+
+	return host_efer;
+}
+
+static void nested_vmx_restore_host_state(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmx_msr_entry g, h;
+	struct msr_data msr;
+	gpa_t gpa;
+	u32 i, j;
+
+	vcpu->arch.pat = vmcs_read64(GUEST_IA32_PAT);
+
+	if (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS) {
+		/*
+		 * L1's host DR7 is lost if KVM_GUESTDBG_USE_HW_BP is set
+		 * as vmcs01.GUEST_DR7 contains a userspace defined value
+		 * and vcpu->arch.dr7 is not squirreled away before the
+		 * nested VMENTER (not worth adding a variable in nested_vmx).
+		 */
+		if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
+			kvm_set_dr(vcpu, 7, DR7_FIXED_1);
+		else
+			WARN_ON(kvm_set_dr(vcpu, 7, vmcs_readl(GUEST_DR7)));
+	}
+
+	/*
+	 * Note that calling vmx_set_{efer,cr0,cr4} is important as they
+	 * handle a variety of side effects to KVM's software model.
+	 */
+	vmx_set_efer(vcpu, nested_vmx_get_vmcs01_guest_efer(vmx));
+
+	vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS;
+	vmx_set_cr0(vcpu, vmcs_readl(CR0_READ_SHADOW));
+
+	vcpu->arch.cr4_guest_owned_bits = ~vmcs_readl(CR4_GUEST_HOST_MASK);
+	vmx_set_cr4(vcpu, vmcs_readl(CR4_READ_SHADOW));
+
+	nested_ept_uninit_mmu_context(vcpu);
+	vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
+	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
+
+	/*
+	 * Use ept_save_pdptrs(vcpu) to load the MMU's cached PDPTRs
+	 * from vmcs01 (if necessary).  The PDPTRs are not loaded on
+	 * VMFail, like everything else we just need to ensure our
+	 * software model is up-to-date.
+	 */
+	ept_save_pdptrs(vcpu);
+
+	kvm_mmu_reset_context(vcpu);
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmx_update_msr_bitmap(vcpu);
+
+	/*
+	 * This nasty bit of open coding is a compromise between blindly
+	 * loading L1's MSRs using the exit load lists (incorrect emulation
+	 * of VMFail), leaving the nested VM's MSRs in the software model
+	 * (incorrect behavior) and snapshotting the modified MSRs (too
+	 * expensive since the lists are unbound by hardware).  For each
+	 * MSR that was (prematurely) loaded from the nested VMEntry load
+	 * list, reload it from the exit load list if it exists and differs
+	 * from the guest value.  The intent is to stuff host state as
+	 * silently as possible, not to fully process the exit load list.
+	 */
+	msr.host_initiated = false;
+	for (i = 0; i < vmcs12->vm_entry_msr_load_count; i++) {
+		gpa = vmcs12->vm_entry_msr_load_addr + (i * sizeof(g));
+		if (kvm_vcpu_read_guest(vcpu, gpa, &g, sizeof(g))) {
+			pr_debug_ratelimited(
+				"%s read MSR index failed (%u, 0x%08llx)\n",
+				__func__, i, gpa);
+			goto vmabort;
+		}
+
+		for (j = 0; j < vmcs12->vm_exit_msr_load_count; j++) {
+			gpa = vmcs12->vm_exit_msr_load_addr + (j * sizeof(h));
+			if (kvm_vcpu_read_guest(vcpu, gpa, &h, sizeof(h))) {
+				pr_debug_ratelimited(
+					"%s read MSR failed (%u, 0x%08llx)\n",
+					__func__, j, gpa);
+				goto vmabort;
+			}
+			if (h.index != g.index)
+				continue;
+			if (h.value == g.value)
+				break;
+
+			if (nested_vmx_load_msr_check(vcpu, &h)) {
+				pr_debug_ratelimited(
+					"%s check failed (%u, 0x%x, 0x%x)\n",
+					__func__, j, h.index, h.reserved);
+				goto vmabort;
+			}
+
+			msr.index = h.index;
+			msr.data = h.value;
+			if (kvm_set_msr(vcpu, &msr)) {
+				pr_debug_ratelimited(
+					"%s WRMSR failed (%u, 0x%x, 0x%llx)\n",
+					__func__, j, h.index, h.value);
+				goto vmabort;
+			}
+		}
+	}
+
+	return;
+
+vmabort:
+	nested_vmx_abort(vcpu, VMX_ABORT_LOAD_HOST_MSR_FAIL);
+}
+
+/*
+ * Emulate an exit from nested guest (L2) to L1, i.e., prepare to run L1
+ * and modify vmcs12 to make it see what it would expect to see there if
+ * L2 was its real guest. Must only be called when in L2 (is_guest_mode())
+ */
+void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
+		       u32 exit_intr_info, unsigned long exit_qualification)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	/* trying to cancel vmlaunch/vmresume is a bug */
+	WARN_ON_ONCE(vmx->nested.nested_run_pending);
+
+	leave_guest_mode(vcpu);
+
+	if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
+		vcpu->arch.tsc_offset -= vmcs12->tsc_offset;
+
+	if (likely(!vmx->fail)) {
+		if (exit_reason == -1)
+			sync_vmcs12(vcpu, vmcs12);
+		else
+			prepare_vmcs12(vcpu, vmcs12, exit_reason, exit_intr_info,
+				       exit_qualification);
+
+		/*
+		 * Must happen outside of sync_vmcs12() as it will
+		 * also be used to capture vmcs12 cache as part of
+		 * capturing nVMX state for snapshot (migration).
+		 *
+		 * Otherwise, this flush will dirty guest memory at a
+		 * point it is already assumed by user-space to be
+		 * immutable.
+		 */
+		nested_flush_cached_shadow_vmcs12(vcpu, vmcs12);
+	} else {
+		/*
+		 * The only expected VM-instruction error is "VM entry with
+		 * invalid control field(s)." Anything else indicates a
+		 * problem with L0.  And we should never get here with a
+		 * VMFail of any type if early consistency checks are enabled.
+		 */
+		WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
+			     VMXERR_ENTRY_INVALID_CONTROL_FIELD);
+		WARN_ON_ONCE(nested_early_check);
+	}
+
+	vmx_switch_vmcs(vcpu, &vmx->vmcs01);
+
+	/* Update any VMCS fields that might have changed while L2 ran */
+	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
+	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
+	vmcs_write64(TSC_OFFSET, vcpu->arch.tsc_offset);
+
+	if (kvm_has_tsc_control)
+		decache_tsc_multiplier(vmx);
+
+	if (vmx->nested.change_vmcs01_virtual_apic_mode) {
+		vmx->nested.change_vmcs01_virtual_apic_mode = false;
+		vmx_set_virtual_apic_mode(vcpu);
+	} else if (!nested_cpu_has_ept(vmcs12) &&
+		   nested_cpu_has2(vmcs12,
+				   SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) {
+		vmx_flush_tlb(vcpu, true);
+	}
+
+	/* This is needed for same reason as it was needed in prepare_vmcs02 */
+	vmx->host_rsp = 0;
+
+	/* Unpin physical memory we referred to in vmcs02 */
+	if (vmx->nested.apic_access_page) {
+		kvm_release_page_dirty(vmx->nested.apic_access_page);
+		vmx->nested.apic_access_page = NULL;
+	}
+	if (vmx->nested.virtual_apic_page) {
+		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
+		vmx->nested.virtual_apic_page = NULL;
+	}
+	if (vmx->nested.pi_desc_page) {
+		kunmap(vmx->nested.pi_desc_page);
+		kvm_release_page_dirty(vmx->nested.pi_desc_page);
+		vmx->nested.pi_desc_page = NULL;
+		vmx->nested.pi_desc = NULL;
+	}
+
+	/*
+	 * We are now running in L2, mmu_notifier will force to reload the
+	 * page's hpa for L2 vmcs. Need to reload it for L1 before entering L1.
+	 */
+	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
+
+	if ((exit_reason != -1) && (enable_shadow_vmcs || vmx->nested.hv_evmcs))
+		vmx->nested.need_vmcs12_sync = true;
+
+	/* in case we halted in L2 */
+	vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
+
+	if (likely(!vmx->fail)) {
+		/*
+		 * TODO: SDM says that with acknowledge interrupt on
+		 * exit, bit 31 of the VM-exit interrupt information
+		 * (valid interrupt) is always set to 1 on
+		 * EXIT_REASON_EXTERNAL_INTERRUPT, so we shouldn't
+		 * need kvm_cpu_has_interrupt().  See the commit
+		 * message for details.
+		 */
+		if (nested_exit_intr_ack_set(vcpu) &&
+		    exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT &&
+		    kvm_cpu_has_interrupt(vcpu)) {
+			int irq = kvm_cpu_get_interrupt(vcpu);
+			WARN_ON(irq < 0);
+			vmcs12->vm_exit_intr_info = irq |
+				INTR_INFO_VALID_MASK | INTR_TYPE_EXT_INTR;
+		}
+
+		if (exit_reason != -1)
+			trace_kvm_nested_vmexit_inject(vmcs12->vm_exit_reason,
+						       vmcs12->exit_qualification,
+						       vmcs12->idt_vectoring_info_field,
+						       vmcs12->vm_exit_intr_info,
+						       vmcs12->vm_exit_intr_error_code,
+						       KVM_ISA_VMX);
+
+		load_vmcs12_host_state(vcpu, vmcs12);
+
+		return;
+	}
+
+	/*
+	 * After an early L2 VM-entry failure, we're now back
+	 * in L1 which thinks it just finished a VMLAUNCH or
+	 * VMRESUME instruction, so we need to set the failure
+	 * flag and the VM-instruction error field of the VMCS
+	 * accordingly, and skip the emulated instruction.
+	 */
+	(void)nested_vmx_failValid(vcpu, VMXERR_ENTRY_INVALID_CONTROL_FIELD);
+
+	/*
+	 * Restore L1's host state to KVM's software model.  We're here
+	 * because a consistency check was caught by hardware, which
+	 * means some amount of guest state has been propagated to KVM's
+	 * model and needs to be unwound to the host's state.
+	 */
+	nested_vmx_restore_host_state(vcpu);
+
+	vmx->fail = 0;
+}
+
+/*
+ * Decode the memory-address operand of a vmx instruction, as recorded on an
+ * exit caused by such an instruction (run by a guest hypervisor).
+ * On success, returns 0. When the operand is invalid, returns 1 and throws
+ * #UD or #GP.
+ */
+int get_vmx_mem_address(struct kvm_vcpu *vcpu, unsigned long exit_qualification,
+			u32 vmx_instruction_info, bool wr, gva_t *ret)
+{
+	gva_t off;
+	bool exn;
+	struct kvm_segment s;
+
+	/*
+	 * According to Vol. 3B, "Information for VM Exits Due to Instruction
+	 * Execution", on an exit, vmx_instruction_info holds most of the
+	 * addressing components of the operand. Only the displacement part
+	 * is put in exit_qualification (see 3B, "Basic VM-Exit Information").
+	 * For how an actual address is calculated from all these components,
+	 * refer to Vol. 1, "Operand Addressing".
+	 */
+	int  scaling = vmx_instruction_info & 3;
+	int  addr_size = (vmx_instruction_info >> 7) & 7;
+	bool is_reg = vmx_instruction_info & (1u << 10);
+	int  seg_reg = (vmx_instruction_info >> 15) & 7;
+	int  index_reg = (vmx_instruction_info >> 18) & 0xf;
+	bool index_is_valid = !(vmx_instruction_info & (1u << 22));
+	int  base_reg       = (vmx_instruction_info >> 23) & 0xf;
+	bool base_is_valid  = !(vmx_instruction_info & (1u << 27));
+
+	if (is_reg) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	/* Addr = segment_base + offset */
+	/* offset = base + [index * scale] + displacement */
+	off = exit_qualification; /* holds the displacement */
+	if (base_is_valid)
+		off += kvm_register_read(vcpu, base_reg);
+	if (index_is_valid)
+		off += kvm_register_read(vcpu, index_reg)<<scaling;
+	vmx_get_segment(vcpu, &s, seg_reg);
+	*ret = s.base + off;
+
+	if (addr_size == 1) /* 32 bit */
+		*ret &= 0xffffffff;
+
+	/* Checks for #GP/#SS exceptions. */
+	exn = false;
+	if (is_long_mode(vcpu)) {
+		/* Long mode: #GP(0)/#SS(0) if the memory address is in a
+		 * non-canonical form. This is the only check on the memory
+		 * destination for long mode!
+		 */
+		exn = is_noncanonical_address(*ret, vcpu);
+	} else if (is_protmode(vcpu)) {
+		/* Protected mode: apply checks for segment validity in the
+		 * following order:
+		 * - segment type check (#GP(0) may be thrown)
+		 * - usability check (#GP(0)/#SS(0))
+		 * - limit check (#GP(0)/#SS(0))
+		 */
+		if (wr)
+			/* #GP(0) if the destination operand is located in a
+			 * read-only data segment or any code segment.
+			 */
+			exn = ((s.type & 0xa) == 0 || (s.type & 8));
+		else
+			/* #GP(0) if the source operand is located in an
+			 * execute-only code segment
+			 */
+			exn = ((s.type & 0xa) == 8);
+		if (exn) {
+			kvm_queue_exception_e(vcpu, GP_VECTOR, 0);
+			return 1;
+		}
+		/* Protected mode: #GP(0)/#SS(0) if the segment is unusable.
+		 */
+		exn = (s.unusable != 0);
+		/* Protected mode: #GP(0)/#SS(0) if the memory
+		 * operand is outside the segment limit.
+		 */
+		exn = exn || (off + sizeof(u64) > s.limit);
+	}
+	if (exn) {
+		kvm_queue_exception_e(vcpu,
+				      seg_reg == VCPU_SREG_SS ?
+						SS_VECTOR : GP_VECTOR,
+				      0);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int nested_vmx_get_vmptr(struct kvm_vcpu *vcpu, gpa_t *vmpointer)
+{
+	gva_t gva;
+	struct x86_exception e;
+
+	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
+			vmcs_read32(VMX_INSTRUCTION_INFO), false, &gva))
+		return 1;
+
+	if (kvm_read_guest_virt(vcpu, gva, vmpointer, sizeof(*vmpointer), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * Allocate a shadow VMCS and associate it with the currently loaded
+ * VMCS, unless such a shadow VMCS already exists. The newly allocated
+ * VMCS is also VMCLEARed, so that it is ready for use.
+ */
+static struct vmcs *alloc_shadow_vmcs(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct loaded_vmcs *loaded_vmcs = vmx->loaded_vmcs;
+
+	/*
+	 * We should allocate a shadow vmcs for vmcs01 only when L1
+	 * executes VMXON and free it when L1 executes VMXOFF.
+	 * As it is invalid to execute VMXON twice, we shouldn't reach
+	 * here when vmcs01 already have an allocated shadow vmcs.
+	 */
+	WARN_ON(loaded_vmcs == &vmx->vmcs01 && loaded_vmcs->shadow_vmcs);
+
+	if (!loaded_vmcs->shadow_vmcs) {
+		loaded_vmcs->shadow_vmcs = alloc_vmcs(true);
+		if (loaded_vmcs->shadow_vmcs)
+			vmcs_clear(loaded_vmcs->shadow_vmcs);
+	}
+	return loaded_vmcs->shadow_vmcs;
+}
+
+static int enter_vmx_operation(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int r;
+
+	r = alloc_loaded_vmcs(&vmx->nested.vmcs02);
+	if (r < 0)
+		goto out_vmcs02;
+
+	vmx->nested.cached_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
+	if (!vmx->nested.cached_vmcs12)
+		goto out_cached_vmcs12;
+
+	vmx->nested.cached_shadow_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
+	if (!vmx->nested.cached_shadow_vmcs12)
+		goto out_cached_shadow_vmcs12;
+
+	if (enable_shadow_vmcs && !alloc_shadow_vmcs(vcpu))
+		goto out_shadow_vmcs;
+
+	hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC,
+		     HRTIMER_MODE_REL_PINNED);
+	vmx->nested.preemption_timer.function = vmx_preemption_timer_fn;
+
+	vmx->nested.vpid02 = allocate_vpid();
+
+	vmx->nested.vmcs02_initialized = false;
+	vmx->nested.vmxon = true;
+
+	if (pt_mode == PT_MODE_HOST_GUEST) {
+		vmx->pt_desc.guest.ctl = 0;
+		pt_update_intercept_for_msr(vmx);
+	}
+
+	return 0;
+
+out_shadow_vmcs:
+	kfree(vmx->nested.cached_shadow_vmcs12);
+
+out_cached_shadow_vmcs12:
+	kfree(vmx->nested.cached_vmcs12);
+
+out_cached_vmcs12:
+	free_loaded_vmcs(&vmx->nested.vmcs02);
+
+out_vmcs02:
+	return -ENOMEM;
+}
+
+/*
+ * Emulate the VMXON instruction.
+ * Currently, we just remember that VMX is active, and do not save or even
+ * inspect the argument to VMXON (the so-called "VMXON pointer") because we
+ * do not currently need to store anything in that guest-allocated memory
+ * region. Consequently, VMCLEAR and VMPTRLD also do not verify that the their
+ * argument is different from the VMXON pointer (which the spec says they do).
+ */
+static int handle_vmon(struct kvm_vcpu *vcpu)
+{
+	int ret;
+	gpa_t vmptr;
+	struct page *page;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	const u64 VMXON_NEEDED_FEATURES = FEATURE_CONTROL_LOCKED
+		| FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
+
+	/*
+	 * The Intel VMX Instruction Reference lists a bunch of bits that are
+	 * prerequisite to running VMXON, most notably cr4.VMXE must be set to
+	 * 1 (see vmx_set_cr4() for when we allow the guest to set this).
+	 * Otherwise, we should fail with #UD.  But most faulting conditions
+	 * have already been checked by hardware, prior to the VM-exit for
+	 * VMXON.  We do test guest cr4.VMXE because processor CR4 always has
+	 * that bit set to 1 in non-root mode.
+	 */
+	if (!kvm_read_cr4_bits(vcpu, X86_CR4_VMXE)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	/* CPL=0 must be checked manually. */
+	if (vmx_get_cpl(vcpu)) {
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	if (vmx->nested.vmxon)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMXON_IN_VMX_ROOT_OPERATION);
+
+	if ((vmx->msr_ia32_feature_control & VMXON_NEEDED_FEATURES)
+			!= VMXON_NEEDED_FEATURES) {
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	if (nested_vmx_get_vmptr(vcpu, &vmptr))
+		return 1;
+
+	/*
+	 * SDM 3: 24.11.5
+	 * The first 4 bytes of VMXON region contain the supported
+	 * VMCS revision identifier
+	 *
+	 * Note - IA32_VMX_BASIC[48] will never be 1 for the nested case;
+	 * which replaces physical address width with 32
+	 */
+	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
+		return nested_vmx_failInvalid(vcpu);
+
+	page = kvm_vcpu_gpa_to_page(vcpu, vmptr);
+	if (is_error_page(page))
+		return nested_vmx_failInvalid(vcpu);
+
+	if (*(u32 *)kmap(page) != VMCS12_REVISION) {
+		kunmap(page);
+		kvm_release_page_clean(page);
+		return nested_vmx_failInvalid(vcpu);
+	}
+	kunmap(page);
+	kvm_release_page_clean(page);
+
+	vmx->nested.vmxon_ptr = vmptr;
+	ret = enter_vmx_operation(vcpu);
+	if (ret)
+		return ret;
+
+	return nested_vmx_succeed(vcpu);
+}
+
+static inline void nested_release_vmcs12(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (vmx->nested.current_vmptr == -1ull)
+		return;
+
+	if (enable_shadow_vmcs) {
+		/* copy to memory all shadowed fields in case
+		   they were modified */
+		copy_shadow_to_vmcs12(vmx);
+		vmx->nested.need_vmcs12_sync = false;
+		vmx_disable_shadow_vmcs(vmx);
+	}
+	vmx->nested.posted_intr_nv = -1;
+
+	/* Flush VMCS12 to guest memory */
+	kvm_vcpu_write_guest_page(vcpu,
+				  vmx->nested.current_vmptr >> PAGE_SHIFT,
+				  vmx->nested.cached_vmcs12, 0, VMCS12_SIZE);
+
+	kvm_mmu_free_roots(vcpu, &vcpu->arch.guest_mmu, KVM_MMU_ROOTS_ALL);
+
+	vmx->nested.current_vmptr = -1ull;
+}
+
+/* Emulate the VMXOFF instruction */
+static int handle_vmoff(struct kvm_vcpu *vcpu)
+{
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+	free_nested(vcpu);
+	return nested_vmx_succeed(vcpu);
+}
+
+/* Emulate the VMCLEAR instruction */
+static int handle_vmclear(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 zero = 0;
+	gpa_t vmptr;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (nested_vmx_get_vmptr(vcpu, &vmptr))
+		return 1;
+
+	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMCLEAR_INVALID_ADDRESS);
+
+	if (vmptr == vmx->nested.vmxon_ptr)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMCLEAR_VMXON_POINTER);
+
+	if (vmx->nested.hv_evmcs_page) {
+		if (vmptr == vmx->nested.hv_evmcs_vmptr)
+			nested_release_evmcs(vcpu);
+	} else {
+		if (vmptr == vmx->nested.current_vmptr)
+			nested_release_vmcs12(vcpu);
+
+		kvm_vcpu_write_guest(vcpu,
+				     vmptr + offsetof(struct vmcs12,
+						      launch_state),
+				     &zero, sizeof(zero));
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch);
+
+/* Emulate the VMLAUNCH instruction */
+static int handle_vmlaunch(struct kvm_vcpu *vcpu)
+{
+	return nested_vmx_run(vcpu, true);
+}
+
+/* Emulate the VMRESUME instruction */
+static int handle_vmresume(struct kvm_vcpu *vcpu)
+{
+
+	return nested_vmx_run(vcpu, false);
+}
+
+static int handle_vmread(struct kvm_vcpu *vcpu)
+{
+	unsigned long field;
+	u64 field_value;
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	gva_t gva = 0;
+	struct vmcs12 *vmcs12;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (to_vmx(vcpu)->nested.current_vmptr == -1ull)
+		return nested_vmx_failInvalid(vcpu);
+
+	if (!is_guest_mode(vcpu))
+		vmcs12 = get_vmcs12(vcpu);
+	else {
+		/*
+		 * When vmcs->vmcs_link_pointer is -1ull, any VMREAD
+		 * to shadowed-field sets the ALU flags for VMfailInvalid.
+		 */
+		if (get_vmcs12(vcpu)->vmcs_link_pointer == -1ull)
+			return nested_vmx_failInvalid(vcpu);
+		vmcs12 = get_shadow_vmcs12(vcpu);
+	}
+
+	/* Decode instruction info and find the field to read */
+	field = kvm_register_readl(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
+	/* Read the field, zero-extended to a u64 field_value */
+	if (vmcs12_read_any(vmcs12, field, &field_value) < 0)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_UNSUPPORTED_VMCS_COMPONENT);
+
+	/*
+	 * Now copy part of this value to register or memory, as requested.
+	 * Note that the number of bits actually copied is 32 or 64 depending
+	 * on the guest's mode (32 or 64 bit), not on the given field's length.
+	 */
+	if (vmx_instruction_info & (1u << 10)) {
+		kvm_register_writel(vcpu, (((vmx_instruction_info) >> 3) & 0xf),
+			field_value);
+	} else {
+		if (get_vmx_mem_address(vcpu, exit_qualification,
+				vmx_instruction_info, true, &gva))
+			return 1;
+		/* _system ok, nested_vmx_check_permission has verified cpl=0 */
+		kvm_write_guest_virt_system(vcpu, gva, &field_value,
+					    (is_long_mode(vcpu) ? 8 : 4), NULL);
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+
+static int handle_vmwrite(struct kvm_vcpu *vcpu)
+{
+	unsigned long field;
+	gva_t gva;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+
+	/* The value to write might be 32 or 64 bits, depending on L1's long
+	 * mode, and eventually we need to write that into a field of several
+	 * possible lengths. The code below first zero-extends the value to 64
+	 * bit (field_value), and then copies only the appropriate number of
+	 * bits into the vmcs12 field.
+	 */
+	u64 field_value = 0;
+	struct x86_exception e;
+	struct vmcs12 *vmcs12;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (vmx->nested.current_vmptr == -1ull)
+		return nested_vmx_failInvalid(vcpu);
+
+	if (vmx_instruction_info & (1u << 10))
+		field_value = kvm_register_readl(vcpu,
+			(((vmx_instruction_info) >> 3) & 0xf));
+	else {
+		if (get_vmx_mem_address(vcpu, exit_qualification,
+				vmx_instruction_info, false, &gva))
+			return 1;
+		if (kvm_read_guest_virt(vcpu, gva, &field_value,
+					(is_64_bit_mode(vcpu) ? 8 : 4), &e)) {
+			kvm_inject_page_fault(vcpu, &e);
+			return 1;
+		}
+	}
+
+
+	field = kvm_register_readl(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
+	/*
+	 * If the vCPU supports "VMWRITE to any supported field in the
+	 * VMCS," then the "read-only" fields are actually read/write.
+	 */
+	if (vmcs_field_readonly(field) &&
+	    !nested_cpu_has_vmwrite_any_field(vcpu))
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMWRITE_READ_ONLY_VMCS_COMPONENT);
+
+	if (!is_guest_mode(vcpu))
+		vmcs12 = get_vmcs12(vcpu);
+	else {
+		/*
+		 * When vmcs->vmcs_link_pointer is -1ull, any VMWRITE
+		 * to shadowed-field sets the ALU flags for VMfailInvalid.
+		 */
+		if (get_vmcs12(vcpu)->vmcs_link_pointer == -1ull)
+			return nested_vmx_failInvalid(vcpu);
+		vmcs12 = get_shadow_vmcs12(vcpu);
+	}
+
+	if (vmcs12_write_any(vmcs12, field, field_value) < 0)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_UNSUPPORTED_VMCS_COMPONENT);
+
+	/*
+	 * Do not track vmcs12 dirty-state if in guest-mode
+	 * as we actually dirty shadow vmcs12 instead of vmcs12.
+	 */
+	if (!is_guest_mode(vcpu)) {
+		switch (field) {
+#define SHADOW_FIELD_RW(x) case x:
+#include "vmcs_shadow_fields.h"
+			/*
+			 * The fields that can be updated by L1 without a vmexit are
+			 * always updated in the vmcs02, the others go down the slow
+			 * path of prepare_vmcs02.
+			 */
+			break;
+		default:
+			vmx->nested.dirty_vmcs12 = true;
+			break;
+		}
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+static void set_current_vmptr(struct vcpu_vmx *vmx, gpa_t vmptr)
+{
+	vmx->nested.current_vmptr = vmptr;
+	if (enable_shadow_vmcs) {
+		vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
+			      SECONDARY_EXEC_SHADOW_VMCS);
+		vmcs_write64(VMCS_LINK_POINTER,
+			     __pa(vmx->vmcs01.shadow_vmcs));
+		vmx->nested.need_vmcs12_sync = true;
+	}
+	vmx->nested.dirty_vmcs12 = true;
+}
+
+/* Emulate the VMPTRLD instruction */
+static int handle_vmptrld(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	gpa_t vmptr;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (nested_vmx_get_vmptr(vcpu, &vmptr))
+		return 1;
+
+	if (!PAGE_ALIGNED(vmptr) || (vmptr >> cpuid_maxphyaddr(vcpu)))
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMPTRLD_INVALID_ADDRESS);
+
+	if (vmptr == vmx->nested.vmxon_ptr)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_VMPTRLD_VMXON_POINTER);
+
+	/* Forbid normal VMPTRLD if Enlightened version was used */
+	if (vmx->nested.hv_evmcs)
+		return 1;
+
+	if (vmx->nested.current_vmptr != vmptr) {
+		struct vmcs12 *new_vmcs12;
+		struct page *page;
+
+		page = kvm_vcpu_gpa_to_page(vcpu, vmptr);
+		if (is_error_page(page)) {
+			/*
+			 * Reads from an unbacked page return all 1s,
+			 * which means that the 32 bits located at the
+			 * given physical address won't match the required
+			 * VMCS12_REVISION identifier.
+			 */
+			nested_vmx_failValid(vcpu,
+				VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID);
+			return kvm_skip_emulated_instruction(vcpu);
+		}
+		new_vmcs12 = kmap(page);
+		if (new_vmcs12->hdr.revision_id != VMCS12_REVISION ||
+		    (new_vmcs12->hdr.shadow_vmcs &&
+		     !nested_cpu_has_vmx_shadow_vmcs(vcpu))) {
+			kunmap(page);
+			kvm_release_page_clean(page);
+			return nested_vmx_failValid(vcpu,
+				VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID);
+		}
+
+		nested_release_vmcs12(vcpu);
+
+		/*
+		 * Load VMCS12 from guest memory since it is not already
+		 * cached.
+		 */
+		memcpy(vmx->nested.cached_vmcs12, new_vmcs12, VMCS12_SIZE);
+		kunmap(page);
+		kvm_release_page_clean(page);
+
+		set_current_vmptr(vmx, vmptr);
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+/* Emulate the VMPTRST instruction */
+static int handle_vmptrst(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qual = vmcs_readl(EXIT_QUALIFICATION);
+	u32 instr_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	gpa_t current_vmptr = to_vmx(vcpu)->nested.current_vmptr;
+	struct x86_exception e;
+	gva_t gva;
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	if (unlikely(to_vmx(vcpu)->nested.hv_evmcs))
+		return 1;
+
+	if (get_vmx_mem_address(vcpu, exit_qual, instr_info, true, &gva))
+		return 1;
+	/* *_system ok, nested_vmx_check_permission has verified cpl=0 */
+	if (kvm_write_guest_virt_system(vcpu, gva, (void *)&current_vmptr,
+					sizeof(gpa_t), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+	return nested_vmx_succeed(vcpu);
+}
+
+/* Emulate the INVEPT instruction */
+static int handle_invept(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 vmx_instruction_info, types;
+	unsigned long type;
+	gva_t gva;
+	struct x86_exception e;
+	struct {
+		u64 eptp, gpa;
+	} operand;
+
+	if (!(vmx->nested.msrs.secondary_ctls_high &
+	      SECONDARY_EXEC_ENABLE_EPT) ||
+	    !(vmx->nested.msrs.ept_caps & VMX_EPT_INVEPT_BIT)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
+
+	types = (vmx->nested.msrs.ept_caps >> VMX_EPT_EXTENT_SHIFT) & 6;
+
+	if (type >= 32 || !(types & (1 << type)))
+		return nested_vmx_failValid(vcpu,
+				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+
+	/* According to the Intel VMX instruction reference, the memory
+	 * operand is read even if it isn't needed (e.g., for type==global)
+	 */
+	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
+			vmx_instruction_info, false, &gva))
+		return 1;
+	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+
+	switch (type) {
+	case VMX_EPT_EXTENT_GLOBAL:
+	/*
+	 * TODO: track mappings and invalidate
+	 * single context requests appropriately
+	 */
+	case VMX_EPT_EXTENT_CONTEXT:
+		kvm_mmu_sync_roots(vcpu);
+		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+		break;
+	default:
+		BUG_ON(1);
+		break;
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+static int handle_invvpid(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 vmx_instruction_info;
+	unsigned long type, types;
+	gva_t gva;
+	struct x86_exception e;
+	struct {
+		u64 vpid;
+		u64 gla;
+	} operand;
+	u16 vpid02;
+
+	if (!(vmx->nested.msrs.secondary_ctls_high &
+	      SECONDARY_EXEC_ENABLE_VPID) ||
+			!(vmx->nested.msrs.vpid_caps & VMX_VPID_INVVPID_BIT)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	if (!nested_vmx_check_permission(vcpu))
+		return 1;
+
+	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
+
+	types = (vmx->nested.msrs.vpid_caps &
+			VMX_VPID_EXTENT_SUPPORTED_MASK) >> 8;
+
+	if (type >= 32 || !(types & (1 << type)))
+		return nested_vmx_failValid(vcpu,
+			VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+
+	/* according to the intel vmx instruction reference, the memory
+	 * operand is read even if it isn't needed (e.g., for type==global)
+	 */
+	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
+			vmx_instruction_info, false, &gva))
+		return 1;
+	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+	if (operand.vpid >> 16)
+		return nested_vmx_failValid(vcpu,
+			VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+
+	vpid02 = nested_get_vpid02(vcpu);
+	switch (type) {
+	case VMX_VPID_EXTENT_INDIVIDUAL_ADDR:
+		if (!operand.vpid ||
+		    is_noncanonical_address(operand.gla, vcpu))
+			return nested_vmx_failValid(vcpu,
+				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+		if (cpu_has_vmx_invvpid_individual_addr()) {
+			__invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR,
+				vpid02, operand.gla);
+		} else
+			__vmx_flush_tlb(vcpu, vpid02, false);
+		break;
+	case VMX_VPID_EXTENT_SINGLE_CONTEXT:
+	case VMX_VPID_EXTENT_SINGLE_NON_GLOBAL:
+		if (!operand.vpid)
+			return nested_vmx_failValid(vcpu,
+				VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+		__vmx_flush_tlb(vcpu, vpid02, false);
+		break;
+	case VMX_VPID_EXTENT_ALL_CONTEXT:
+		__vmx_flush_tlb(vcpu, vpid02, false);
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return kvm_skip_emulated_instruction(vcpu);
+	}
+
+	return nested_vmx_succeed(vcpu);
+}
+
+static int nested_vmx_eptp_switching(struct kvm_vcpu *vcpu,
+				     struct vmcs12 *vmcs12)
+{
+	u32 index = vcpu->arch.regs[VCPU_REGS_RCX];
+	u64 address;
+	bool accessed_dirty;
+	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
+
+	if (!nested_cpu_has_eptp_switching(vmcs12) ||
+	    !nested_cpu_has_ept(vmcs12))
+		return 1;
+
+	if (index >= VMFUNC_EPTP_ENTRIES)
+		return 1;
+
+
+	if (kvm_vcpu_read_guest_page(vcpu, vmcs12->eptp_list_address >> PAGE_SHIFT,
+				     &address, index * 8, 8))
+		return 1;
+
+	accessed_dirty = !!(address & VMX_EPTP_AD_ENABLE_BIT);
+
+	/*
+	 * If the (L2) guest does a vmfunc to the currently
+	 * active ept pointer, we don't have to do anything else
+	 */
+	if (vmcs12->ept_pointer != address) {
+		if (!valid_ept_address(vcpu, address))
+			return 1;
+
+		kvm_mmu_unload(vcpu);
+		mmu->ept_ad = accessed_dirty;
+		mmu->mmu_role.base.ad_disabled = !accessed_dirty;
+		vmcs12->ept_pointer = address;
+		/*
+		 * TODO: Check what's the correct approach in case
+		 * mmu reload fails. Currently, we just let the next
+		 * reload potentially fail
+		 */
+		kvm_mmu_reload(vcpu);
+	}
+
+	return 0;
+}
+
+static int handle_vmfunc(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs12 *vmcs12;
+	u32 function = vcpu->arch.regs[VCPU_REGS_RAX];
+
+	/*
+	 * VMFUNC is only supported for nested guests, but we always enable the
+	 * secondary control for simplicity; for non-nested mode, fake that we
+	 * didn't by injecting #UD.
+	 */
+	if (!is_guest_mode(vcpu)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	vmcs12 = get_vmcs12(vcpu);
+	if ((vmcs12->vm_function_control & (1 << function)) == 0)
+		goto fail;
+
+	switch (function) {
+	case 0:
+		if (nested_vmx_eptp_switching(vcpu, vmcs12))
+			goto fail;
+		break;
+	default:
+		goto fail;
+	}
+	return kvm_skip_emulated_instruction(vcpu);
+
+fail:
+	nested_vmx_vmexit(vcpu, vmx->exit_reason,
+			  vmcs_read32(VM_EXIT_INTR_INFO),
+			  vmcs_readl(EXIT_QUALIFICATION));
+	return 1;
+}
+
+
+static bool nested_vmx_exit_handled_io(struct kvm_vcpu *vcpu,
+				       struct vmcs12 *vmcs12)
+{
+	unsigned long exit_qualification;
+	gpa_t bitmap, last_bitmap;
+	unsigned int port;
+	int size;
+	u8 b;
+
+	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_IO_BITMAPS))
+		return nested_cpu_has(vmcs12, CPU_BASED_UNCOND_IO_EXITING);
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+	port = exit_qualification >> 16;
+	size = (exit_qualification & 7) + 1;
+
+	last_bitmap = (gpa_t)-1;
+	b = -1;
+
+	while (size > 0) {
+		if (port < 0x8000)
+			bitmap = vmcs12->io_bitmap_a;
+		else if (port < 0x10000)
+			bitmap = vmcs12->io_bitmap_b;
+		else
+			return true;
+		bitmap += (port & 0x7fff) / 8;
+
+		if (last_bitmap != bitmap)
+			if (kvm_vcpu_read_guest(vcpu, bitmap, &b, 1))
+				return true;
+		if (b & (1 << (port & 7)))
+			return true;
+
+		port++;
+		size--;
+		last_bitmap = bitmap;
+	}
+
+	return false;
+}
+
+/*
+ * Return 1 if we should exit from L2 to L1 to handle an MSR access access,
+ * rather than handle it ourselves in L0. I.e., check whether L1 expressed
+ * disinterest in the current event (read or write a specific MSR) by using an
+ * MSR bitmap. This may be the case even when L0 doesn't use MSR bitmaps.
+ */
+static bool nested_vmx_exit_handled_msr(struct kvm_vcpu *vcpu,
+	struct vmcs12 *vmcs12, u32 exit_reason)
+{
+	u32 msr_index = vcpu->arch.regs[VCPU_REGS_RCX];
+	gpa_t bitmap;
+
+	if (!nested_cpu_has(vmcs12, CPU_BASED_USE_MSR_BITMAPS))
+		return true;
+
+	/*
+	 * The MSR_BITMAP page is divided into four 1024-byte bitmaps,
+	 * for the four combinations of read/write and low/high MSR numbers.
+	 * First we need to figure out which of the four to use:
+	 */
+	bitmap = vmcs12->msr_bitmap;
+	if (exit_reason == EXIT_REASON_MSR_WRITE)
+		bitmap += 2048;
+	if (msr_index >= 0xc0000000) {
+		msr_index -= 0xc0000000;
+		bitmap += 1024;
+	}
+
+	/* Then read the msr_index'th bit from this bitmap: */
+	if (msr_index < 1024*8) {
+		unsigned char b;
+		if (kvm_vcpu_read_guest(vcpu, bitmap + msr_index/8, &b, 1))
+			return true;
+		return 1 & (b >> (msr_index & 7));
+	} else
+		return true; /* let L1 handle the wrong parameter */
+}
+
+/*
+ * Return 1 if we should exit from L2 to L1 to handle a CR access exit,
+ * rather than handle it ourselves in L0. I.e., check if L1 wanted to
+ * intercept (via guest_host_mask etc.) the current event.
+ */
+static bool nested_vmx_exit_handled_cr(struct kvm_vcpu *vcpu,
+	struct vmcs12 *vmcs12)
+{
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	int cr = exit_qualification & 15;
+	int reg;
+	unsigned long val;
+
+	switch ((exit_qualification >> 4) & 3) {
+	case 0: /* mov to cr */
+		reg = (exit_qualification >> 8) & 15;
+		val = kvm_register_readl(vcpu, reg);
+		switch (cr) {
+		case 0:
+			if (vmcs12->cr0_guest_host_mask &
+			    (val ^ vmcs12->cr0_read_shadow))
+				return true;
+			break;
+		case 3:
+			if ((vmcs12->cr3_target_count >= 1 &&
+					vmcs12->cr3_target_value0 == val) ||
+				(vmcs12->cr3_target_count >= 2 &&
+					vmcs12->cr3_target_value1 == val) ||
+				(vmcs12->cr3_target_count >= 3 &&
+					vmcs12->cr3_target_value2 == val) ||
+				(vmcs12->cr3_target_count >= 4 &&
+					vmcs12->cr3_target_value3 == val))
+				return false;
+			if (nested_cpu_has(vmcs12, CPU_BASED_CR3_LOAD_EXITING))
+				return true;
+			break;
+		case 4:
+			if (vmcs12->cr4_guest_host_mask &
+			    (vmcs12->cr4_read_shadow ^ val))
+				return true;
+			break;
+		case 8:
+			if (nested_cpu_has(vmcs12, CPU_BASED_CR8_LOAD_EXITING))
+				return true;
+			break;
+		}
+		break;
+	case 2: /* clts */
+		if ((vmcs12->cr0_guest_host_mask & X86_CR0_TS) &&
+		    (vmcs12->cr0_read_shadow & X86_CR0_TS))
+			return true;
+		break;
+	case 1: /* mov from cr */
+		switch (cr) {
+		case 3:
+			if (vmcs12->cpu_based_vm_exec_control &
+			    CPU_BASED_CR3_STORE_EXITING)
+				return true;
+			break;
+		case 8:
+			if (vmcs12->cpu_based_vm_exec_control &
+			    CPU_BASED_CR8_STORE_EXITING)
+				return true;
+			break;
+		}
+		break;
+	case 3: /* lmsw */
+		/*
+		 * lmsw can change bits 1..3 of cr0, and only set bit 0 of
+		 * cr0. Other attempted changes are ignored, with no exit.
+		 */
+		val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
+		if (vmcs12->cr0_guest_host_mask & 0xe &
+		    (val ^ vmcs12->cr0_read_shadow))
+			return true;
+		if ((vmcs12->cr0_guest_host_mask & 0x1) &&
+		    !(vmcs12->cr0_read_shadow & 0x1) &&
+		    (val & 0x1))
+			return true;
+		break;
+	}
+	return false;
+}
+
+static bool nested_vmx_exit_handled_vmcs_access(struct kvm_vcpu *vcpu,
+	struct vmcs12 *vmcs12, gpa_t bitmap)
+{
+	u32 vmx_instruction_info;
+	unsigned long field;
+	u8 b;
+
+	if (!nested_cpu_has_shadow_vmcs(vmcs12))
+		return true;
+
+	/* Decode instruction info and find the field to access */
+	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	field = kvm_register_read(vcpu, (((vmx_instruction_info) >> 28) & 0xf));
+
+	/* Out-of-range fields always cause a VM exit from L2 to L1 */
+	if (field >> 15)
+		return true;
+
+	if (kvm_vcpu_read_guest(vcpu, bitmap + field/8, &b, 1))
+		return true;
+
+	return 1 & (b >> (field & 7));
+}
+
+/*
+ * Return 1 if we should exit from L2 to L1 to handle an exit, or 0 if we
+ * should handle it ourselves in L0 (and then continue L2). Only call this
+ * when in is_guest_mode (L2).
+ */
+bool nested_vmx_exit_reflected(struct kvm_vcpu *vcpu, u32 exit_reason)
+{
+	u32 intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	if (vmx->nested.nested_run_pending)
+		return false;
+
+	if (unlikely(vmx->fail)) {
+		pr_info_ratelimited("%s failed vm entry %x\n", __func__,
+				    vmcs_read32(VM_INSTRUCTION_ERROR));
+		return true;
+	}
+
+	/*
+	 * The host physical addresses of some pages of guest memory
+	 * are loaded into the vmcs02 (e.g. vmcs12's Virtual APIC
+	 * Page). The CPU may write to these pages via their host
+	 * physical address while L2 is running, bypassing any
+	 * address-translation-based dirty tracking (e.g. EPT write
+	 * protection).
+	 *
+	 * Mark them dirty on every exit from L2 to prevent them from
+	 * getting out of sync with dirty tracking.
+	 */
+	nested_mark_vmcs12_pages_dirty(vcpu);
+
+	trace_kvm_nested_vmexit(kvm_rip_read(vcpu), exit_reason,
+				vmcs_readl(EXIT_QUALIFICATION),
+				vmx->idt_vectoring_info,
+				intr_info,
+				vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
+				KVM_ISA_VMX);
+
+	switch (exit_reason) {
+	case EXIT_REASON_EXCEPTION_NMI:
+		if (is_nmi(intr_info))
+			return false;
+		else if (is_page_fault(intr_info))
+			return !vmx->vcpu.arch.apf.host_apf_reason && enable_ept;
+		else if (is_debug(intr_info) &&
+			 vcpu->guest_debug &
+			 (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
+			return false;
+		else if (is_breakpoint(intr_info) &&
+			 vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
+			return false;
+		return vmcs12->exception_bitmap &
+				(1u << (intr_info & INTR_INFO_VECTOR_MASK));
+	case EXIT_REASON_EXTERNAL_INTERRUPT:
+		return false;
+	case EXIT_REASON_TRIPLE_FAULT:
+		return true;
+	case EXIT_REASON_PENDING_INTERRUPT:
+		return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_INTR_PENDING);
+	case EXIT_REASON_NMI_WINDOW:
+		return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING);
+	case EXIT_REASON_TASK_SWITCH:
+		return true;
+	case EXIT_REASON_CPUID:
+		return true;
+	case EXIT_REASON_HLT:
+		return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING);
+	case EXIT_REASON_INVD:
+		return true;
+	case EXIT_REASON_INVLPG:
+		return nested_cpu_has(vmcs12, CPU_BASED_INVLPG_EXITING);
+	case EXIT_REASON_RDPMC:
+		return nested_cpu_has(vmcs12, CPU_BASED_RDPMC_EXITING);
+	case EXIT_REASON_RDRAND:
+		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDRAND_EXITING);
+	case EXIT_REASON_RDSEED:
+		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDSEED_EXITING);
+	case EXIT_REASON_RDTSC: case EXIT_REASON_RDTSCP:
+		return nested_cpu_has(vmcs12, CPU_BASED_RDTSC_EXITING);
+	case EXIT_REASON_VMREAD:
+		return nested_vmx_exit_handled_vmcs_access(vcpu, vmcs12,
+			vmcs12->vmread_bitmap);
+	case EXIT_REASON_VMWRITE:
+		return nested_vmx_exit_handled_vmcs_access(vcpu, vmcs12,
+			vmcs12->vmwrite_bitmap);
+	case EXIT_REASON_VMCALL: case EXIT_REASON_VMCLEAR:
+	case EXIT_REASON_VMLAUNCH: case EXIT_REASON_VMPTRLD:
+	case EXIT_REASON_VMPTRST: case EXIT_REASON_VMRESUME:
+	case EXIT_REASON_VMOFF: case EXIT_REASON_VMON:
+	case EXIT_REASON_INVEPT: case EXIT_REASON_INVVPID:
+		/*
+		 * VMX instructions trap unconditionally. This allows L1 to
+		 * emulate them for its L2 guest, i.e., allows 3-level nesting!
+		 */
+		return true;
+	case EXIT_REASON_CR_ACCESS:
+		return nested_vmx_exit_handled_cr(vcpu, vmcs12);
+	case EXIT_REASON_DR_ACCESS:
+		return nested_cpu_has(vmcs12, CPU_BASED_MOV_DR_EXITING);
+	case EXIT_REASON_IO_INSTRUCTION:
+		return nested_vmx_exit_handled_io(vcpu, vmcs12);
+	case EXIT_REASON_GDTR_IDTR: case EXIT_REASON_LDTR_TR:
+		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_DESC);
+	case EXIT_REASON_MSR_READ:
+	case EXIT_REASON_MSR_WRITE:
+		return nested_vmx_exit_handled_msr(vcpu, vmcs12, exit_reason);
+	case EXIT_REASON_INVALID_STATE:
+		return true;
+	case EXIT_REASON_MWAIT_INSTRUCTION:
+		return nested_cpu_has(vmcs12, CPU_BASED_MWAIT_EXITING);
+	case EXIT_REASON_MONITOR_TRAP_FLAG:
+		return nested_cpu_has(vmcs12, CPU_BASED_MONITOR_TRAP_FLAG);
+	case EXIT_REASON_MONITOR_INSTRUCTION:
+		return nested_cpu_has(vmcs12, CPU_BASED_MONITOR_EXITING);
+	case EXIT_REASON_PAUSE_INSTRUCTION:
+		return nested_cpu_has(vmcs12, CPU_BASED_PAUSE_EXITING) ||
+			nested_cpu_has2(vmcs12,
+				SECONDARY_EXEC_PAUSE_LOOP_EXITING);
+	case EXIT_REASON_MCE_DURING_VMENTRY:
+		return false;
+	case EXIT_REASON_TPR_BELOW_THRESHOLD:
+		return nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW);
+	case EXIT_REASON_APIC_ACCESS:
+	case EXIT_REASON_APIC_WRITE:
+	case EXIT_REASON_EOI_INDUCED:
+		/*
+		 * The controls for "virtualize APIC accesses," "APIC-
+		 * register virtualization," and "virtual-interrupt
+		 * delivery" only come from vmcs12.
+		 */
+		return true;
+	case EXIT_REASON_EPT_VIOLATION:
+		/*
+		 * L0 always deals with the EPT violation. If nested EPT is
+		 * used, and the nested mmu code discovers that the address is
+		 * missing in the guest EPT table (EPT12), the EPT violation
+		 * will be injected with nested_ept_inject_page_fault()
+		 */
+		return false;
+	case EXIT_REASON_EPT_MISCONFIG:
+		/*
+		 * L2 never uses directly L1's EPT, but rather L0's own EPT
+		 * table (shadow on EPT) or a merged EPT table that L0 built
+		 * (EPT on EPT). So any problems with the structure of the
+		 * table is L0's fault.
+		 */
+		return false;
+	case EXIT_REASON_INVPCID:
+		return
+			nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_INVPCID) &&
+			nested_cpu_has(vmcs12, CPU_BASED_INVLPG_EXITING);
+	case EXIT_REASON_WBINVD:
+		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_WBINVD_EXITING);
+	case EXIT_REASON_XSETBV:
+		return true;
+	case EXIT_REASON_XSAVES: case EXIT_REASON_XRSTORS:
+		/*
+		 * This should never happen, since it is not possible to
+		 * set XSS to a non-zero value---neither in L1 nor in L2.
+		 * If if it were, XSS would have to be checked against
+		 * the XSS exit bitmap in vmcs12.
+		 */
+		return nested_cpu_has2(vmcs12, SECONDARY_EXEC_XSAVES);
+	case EXIT_REASON_PREEMPTION_TIMER:
+		return false;
+	case EXIT_REASON_PML_FULL:
+		/* We emulate PML support to L1. */
+		return false;
+	case EXIT_REASON_VMFUNC:
+		/* VM functions are emulated through L2->L0 vmexits. */
+		return false;
+	case EXIT_REASON_ENCLS:
+		/* SGX is never exposed to L1 */
+		return false;
+	default:
+		return true;
+	}
+}
+
+
+static int vmx_get_nested_state(struct kvm_vcpu *vcpu,
+				struct kvm_nested_state __user *user_kvm_nested_state,
+				u32 user_data_size)
+{
+	struct vcpu_vmx *vmx;
+	struct vmcs12 *vmcs12;
+	struct kvm_nested_state kvm_state = {
+		.flags = 0,
+		.format = 0,
+		.size = sizeof(kvm_state),
+		.vmx.vmxon_pa = -1ull,
+		.vmx.vmcs_pa = -1ull,
+	};
+
+	if (!vcpu)
+		return kvm_state.size + 2 * VMCS12_SIZE;
+
+	vmx = to_vmx(vcpu);
+	vmcs12 = get_vmcs12(vcpu);
+
+	if (nested_vmx_allowed(vcpu) && vmx->nested.enlightened_vmcs_enabled)
+		kvm_state.flags |= KVM_STATE_NESTED_EVMCS;
+
+	if (nested_vmx_allowed(vcpu) &&
+	    (vmx->nested.vmxon || vmx->nested.smm.vmxon)) {
+		kvm_state.vmx.vmxon_pa = vmx->nested.vmxon_ptr;
+		kvm_state.vmx.vmcs_pa = vmx->nested.current_vmptr;
+
+		if (vmx_has_valid_vmcs12(vcpu)) {
+			kvm_state.size += VMCS12_SIZE;
+
+			if (is_guest_mode(vcpu) &&
+			    nested_cpu_has_shadow_vmcs(vmcs12) &&
+			    vmcs12->vmcs_link_pointer != -1ull)
+				kvm_state.size += VMCS12_SIZE;
+		}
+
+		if (vmx->nested.smm.vmxon)
+			kvm_state.vmx.smm.flags |= KVM_STATE_NESTED_SMM_VMXON;
+
+		if (vmx->nested.smm.guest_mode)
+			kvm_state.vmx.smm.flags |= KVM_STATE_NESTED_SMM_GUEST_MODE;
+
+		if (is_guest_mode(vcpu)) {
+			kvm_state.flags |= KVM_STATE_NESTED_GUEST_MODE;
+
+			if (vmx->nested.nested_run_pending)
+				kvm_state.flags |= KVM_STATE_NESTED_RUN_PENDING;
+		}
+	}
+
+	if (user_data_size < kvm_state.size)
+		goto out;
+
+	if (copy_to_user(user_kvm_nested_state, &kvm_state, sizeof(kvm_state)))
+		return -EFAULT;
+
+	if (!vmx_has_valid_vmcs12(vcpu))
+		goto out;
+
+	/*
+	 * When running L2, the authoritative vmcs12 state is in the
+	 * vmcs02. When running L1, the authoritative vmcs12 state is
+	 * in the shadow or enlightened vmcs linked to vmcs01, unless
+	 * need_vmcs12_sync is set, in which case, the authoritative
+	 * vmcs12 state is in the vmcs12 already.
+	 */
+	if (is_guest_mode(vcpu)) {
+		sync_vmcs12(vcpu, vmcs12);
+	} else if (!vmx->nested.need_vmcs12_sync) {
+		if (vmx->nested.hv_evmcs)
+			copy_enlightened_to_vmcs12(vmx);
+		else if (enable_shadow_vmcs)
+			copy_shadow_to_vmcs12(vmx);
+	}
+
+	if (copy_to_user(user_kvm_nested_state->data, vmcs12, sizeof(*vmcs12)))
+		return -EFAULT;
+
+	if (nested_cpu_has_shadow_vmcs(vmcs12) &&
+	    vmcs12->vmcs_link_pointer != -1ull) {
+		if (copy_to_user(user_kvm_nested_state->data + VMCS12_SIZE,
+				 get_shadow_vmcs12(vcpu), sizeof(*vmcs12)))
+			return -EFAULT;
+	}
+
+out:
+	return kvm_state.size;
+}
+
+/*
+ * Forcibly leave nested mode in order to be able to reset the VCPU later on.
+ */
+void vmx_leave_nested(struct kvm_vcpu *vcpu)
+{
+	if (is_guest_mode(vcpu)) {
+		to_vmx(vcpu)->nested.nested_run_pending = 0;
+		nested_vmx_vmexit(vcpu, -1, 0, 0);
+	}
+	free_nested(vcpu);
+}
+
+static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
+				struct kvm_nested_state __user *user_kvm_nested_state,
+				struct kvm_nested_state *kvm_state)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs12 *vmcs12;
+	u32 exit_qual;
+	int ret;
+
+	if (kvm_state->format != 0)
+		return -EINVAL;
+
+	if (kvm_state->flags & KVM_STATE_NESTED_EVMCS)
+		nested_enable_evmcs(vcpu, NULL);
+
+	if (!nested_vmx_allowed(vcpu))
+		return kvm_state->vmx.vmxon_pa == -1ull ? 0 : -EINVAL;
+
+	if (kvm_state->vmx.vmxon_pa == -1ull) {
+		if (kvm_state->vmx.smm.flags)
+			return -EINVAL;
+
+		if (kvm_state->vmx.vmcs_pa != -1ull)
+			return -EINVAL;
+
+		vmx_leave_nested(vcpu);
+		return 0;
+	}
+
+	if (!page_address_valid(vcpu, kvm_state->vmx.vmxon_pa))
+		return -EINVAL;
+
+	if ((kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE) &&
+	    (kvm_state->flags & KVM_STATE_NESTED_GUEST_MODE))
+		return -EINVAL;
+
+	if (kvm_state->vmx.smm.flags &
+	    ~(KVM_STATE_NESTED_SMM_GUEST_MODE | KVM_STATE_NESTED_SMM_VMXON))
+		return -EINVAL;
+
+	/*
+	 * SMM temporarily disables VMX, so we cannot be in guest mode,
+	 * nor can VMLAUNCH/VMRESUME be pending.  Outside SMM, SMM flags
+	 * must be zero.
+	 */
+	if (is_smm(vcpu) ? kvm_state->flags : kvm_state->vmx.smm.flags)
+		return -EINVAL;
+
+	if ((kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE) &&
+	    !(kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_VMXON))
+		return -EINVAL;
+
+	vmx_leave_nested(vcpu);
+	if (kvm_state->vmx.vmxon_pa == -1ull)
+		return 0;
+
+	vmx->nested.vmxon_ptr = kvm_state->vmx.vmxon_pa;
+	ret = enter_vmx_operation(vcpu);
+	if (ret)
+		return ret;
+
+	/* Empty 'VMXON' state is permitted */
+	if (kvm_state->size < sizeof(kvm_state) + sizeof(*vmcs12))
+		return 0;
+
+	if (kvm_state->vmx.vmcs_pa != -1ull) {
+		if (kvm_state->vmx.vmcs_pa == kvm_state->vmx.vmxon_pa ||
+		    !page_address_valid(vcpu, kvm_state->vmx.vmcs_pa))
+			return -EINVAL;
+
+		set_current_vmptr(vmx, kvm_state->vmx.vmcs_pa);
+	} else if (kvm_state->flags & KVM_STATE_NESTED_EVMCS) {
+		/*
+		 * Sync eVMCS upon entry as we may not have
+		 * HV_X64_MSR_VP_ASSIST_PAGE set up yet.
+		 */
+		vmx->nested.need_vmcs12_sync = true;
+	} else {
+		return -EINVAL;
+	}
+
+	if (kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_VMXON) {
+		vmx->nested.smm.vmxon = true;
+		vmx->nested.vmxon = false;
+
+		if (kvm_state->vmx.smm.flags & KVM_STATE_NESTED_SMM_GUEST_MODE)
+			vmx->nested.smm.guest_mode = true;
+	}
+
+	vmcs12 = get_vmcs12(vcpu);
+	if (copy_from_user(vmcs12, user_kvm_nested_state->data, sizeof(*vmcs12)))
+		return -EFAULT;
+
+	if (vmcs12->hdr.revision_id != VMCS12_REVISION)
+		return -EINVAL;
+
+	if (!(kvm_state->flags & KVM_STATE_NESTED_GUEST_MODE))
+		return 0;
+
+	vmx->nested.nested_run_pending =
+		!!(kvm_state->flags & KVM_STATE_NESTED_RUN_PENDING);
+
+	if (nested_cpu_has_shadow_vmcs(vmcs12) &&
+	    vmcs12->vmcs_link_pointer != -1ull) {
+		struct vmcs12 *shadow_vmcs12 = get_shadow_vmcs12(vcpu);
+
+		if (kvm_state->size < sizeof(kvm_state) + 2 * sizeof(*vmcs12))
+			return -EINVAL;
+
+		if (copy_from_user(shadow_vmcs12,
+				   user_kvm_nested_state->data + VMCS12_SIZE,
+				   sizeof(*vmcs12)))
+			return -EFAULT;
+
+		if (shadow_vmcs12->hdr.revision_id != VMCS12_REVISION ||
+		    !shadow_vmcs12->hdr.shadow_vmcs)
+			return -EINVAL;
+	}
+
+	if (nested_vmx_check_vmentry_prereqs(vcpu, vmcs12) ||
+	    nested_vmx_check_vmentry_postreqs(vcpu, vmcs12, &exit_qual))
+		return -EINVAL;
+
+	vmx->nested.dirty_vmcs12 = true;
+	ret = nested_vmx_enter_non_root_mode(vcpu, false);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
+}
+
+void nested_vmx_vcpu_setup(void)
+{
+	if (enable_shadow_vmcs) {
+		/*
+		 * At vCPU creation, "VMWRITE to any supported field
+		 * in the VMCS" is supported, so use the more
+		 * permissive vmx_vmread_bitmap to specify both read
+		 * and write permissions for the shadow VMCS.
+		 */
+		vmcs_write64(VMREAD_BITMAP, __pa(vmx_vmread_bitmap));
+		vmcs_write64(VMWRITE_BITMAP, __pa(vmx_vmread_bitmap));
+	}
+}
+
+/*
+ * nested_vmx_setup_ctls_msrs() sets up variables containing the values to be
+ * returned for the various VMX controls MSRs when nested VMX is enabled.
+ * The same values should also be used to verify that vmcs12 control fields are
+ * valid during nested entry from L1 to L2.
+ * Each of these control msrs has a low and high 32-bit half: A low bit is on
+ * if the corresponding bit in the (32-bit) control field *must* be on, and a
+ * bit in the high half is on if the corresponding bit in the control field
+ * may be on. See also vmx_control_verify().
+ */
+void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps,
+				bool apicv)
+{
+	/*
+	 * Note that as a general rule, the high half of the MSRs (bits in
+	 * the control fields which may be 1) should be initialized by the
+	 * intersection of the underlying hardware's MSR (i.e., features which
+	 * can be supported) and the list of features we want to expose -
+	 * because they are known to be properly supported in our code.
+	 * Also, usually, the low half of the MSRs (bits which must be 1) can
+	 * be set to 0, meaning that L1 may turn off any of these bits. The
+	 * reason is that if one of these bits is necessary, it will appear
+	 * in vmcs01 and prepare_vmcs02, when it bitwise-or's the control
+	 * fields of vmcs01 and vmcs02, will turn these bits off - and
+	 * nested_vmx_exit_reflected() will not pass related exits to L1.
+	 * These rules have exceptions below.
+	 */
+
+	/* pin-based controls */
+	rdmsr(MSR_IA32_VMX_PINBASED_CTLS,
+		msrs->pinbased_ctls_low,
+		msrs->pinbased_ctls_high);
+	msrs->pinbased_ctls_low |=
+		PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
+	msrs->pinbased_ctls_high &=
+		PIN_BASED_EXT_INTR_MASK |
+		PIN_BASED_NMI_EXITING |
+		PIN_BASED_VIRTUAL_NMIS |
+		(apicv ? PIN_BASED_POSTED_INTR : 0);
+	msrs->pinbased_ctls_high |=
+		PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR |
+		PIN_BASED_VMX_PREEMPTION_TIMER;
+
+	/* exit controls */
+	rdmsr(MSR_IA32_VMX_EXIT_CTLS,
+		msrs->exit_ctls_low,
+		msrs->exit_ctls_high);
+	msrs->exit_ctls_low =
+		VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR;
+
+	msrs->exit_ctls_high &=
+#ifdef CONFIG_X86_64
+		VM_EXIT_HOST_ADDR_SPACE_SIZE |
+#endif
+		VM_EXIT_LOAD_IA32_PAT | VM_EXIT_SAVE_IA32_PAT;
+	msrs->exit_ctls_high |=
+		VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR |
+		VM_EXIT_LOAD_IA32_EFER | VM_EXIT_SAVE_IA32_EFER |
+		VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | VM_EXIT_ACK_INTR_ON_EXIT;
+
+	/* We support free control of debug control saving. */
+	msrs->exit_ctls_low &= ~VM_EXIT_SAVE_DEBUG_CONTROLS;
+
+	/* entry controls */
+	rdmsr(MSR_IA32_VMX_ENTRY_CTLS,
+		msrs->entry_ctls_low,
+		msrs->entry_ctls_high);
+	msrs->entry_ctls_low =
+		VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR;
+	msrs->entry_ctls_high &=
+#ifdef CONFIG_X86_64
+		VM_ENTRY_IA32E_MODE |
+#endif
+		VM_ENTRY_LOAD_IA32_PAT;
+	msrs->entry_ctls_high |=
+		(VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR | VM_ENTRY_LOAD_IA32_EFER);
+
+	/* We support free control of debug control loading. */
+	msrs->entry_ctls_low &= ~VM_ENTRY_LOAD_DEBUG_CONTROLS;
+
+	/* cpu-based controls */
+	rdmsr(MSR_IA32_VMX_PROCBASED_CTLS,
+		msrs->procbased_ctls_low,
+		msrs->procbased_ctls_high);
+	msrs->procbased_ctls_low =
+		CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR;
+	msrs->procbased_ctls_high &=
+		CPU_BASED_VIRTUAL_INTR_PENDING |
+		CPU_BASED_VIRTUAL_NMI_PENDING | CPU_BASED_USE_TSC_OFFSETING |
+		CPU_BASED_HLT_EXITING | CPU_BASED_INVLPG_EXITING |
+		CPU_BASED_MWAIT_EXITING | CPU_BASED_CR3_LOAD_EXITING |
+		CPU_BASED_CR3_STORE_EXITING |
+#ifdef CONFIG_X86_64
+		CPU_BASED_CR8_LOAD_EXITING | CPU_BASED_CR8_STORE_EXITING |
+#endif
+		CPU_BASED_MOV_DR_EXITING | CPU_BASED_UNCOND_IO_EXITING |
+		CPU_BASED_USE_IO_BITMAPS | CPU_BASED_MONITOR_TRAP_FLAG |
+		CPU_BASED_MONITOR_EXITING | CPU_BASED_RDPMC_EXITING |
+		CPU_BASED_RDTSC_EXITING | CPU_BASED_PAUSE_EXITING |
+		CPU_BASED_TPR_SHADOW | CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
+	/*
+	 * We can allow some features even when not supported by the
+	 * hardware. For example, L1 can specify an MSR bitmap - and we
+	 * can use it to avoid exits to L1 - even when L0 runs L2
+	 * without MSR bitmaps.
+	 */
+	msrs->procbased_ctls_high |=
+		CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR |
+		CPU_BASED_USE_MSR_BITMAPS;
+
+	/* We support free control of CR3 access interception. */
+	msrs->procbased_ctls_low &=
+		~(CPU_BASED_CR3_LOAD_EXITING | CPU_BASED_CR3_STORE_EXITING);
+
+	/*
+	 * secondary cpu-based controls.  Do not include those that
+	 * depend on CPUID bits, they are added later by vmx_cpuid_update.
+	 */
+	rdmsr(MSR_IA32_VMX_PROCBASED_CTLS2,
+		msrs->secondary_ctls_low,
+		msrs->secondary_ctls_high);
+	msrs->secondary_ctls_low = 0;
+	msrs->secondary_ctls_high &=
+		SECONDARY_EXEC_DESC |
+		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
+		SECONDARY_EXEC_APIC_REGISTER_VIRT |
+		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
+		SECONDARY_EXEC_WBINVD_EXITING;
+
+	/*
+	 * We can emulate "VMCS shadowing," even if the hardware
+	 * doesn't support it.
+	 */
+	msrs->secondary_ctls_high |=
+		SECONDARY_EXEC_SHADOW_VMCS;
+
+	if (enable_ept) {
+		/* nested EPT: emulate EPT also to L1 */
+		msrs->secondary_ctls_high |=
+			SECONDARY_EXEC_ENABLE_EPT;
+		msrs->ept_caps = VMX_EPT_PAGE_WALK_4_BIT |
+			 VMX_EPTP_WB_BIT | VMX_EPT_INVEPT_BIT;
+		if (cpu_has_vmx_ept_execute_only())
+			msrs->ept_caps |=
+				VMX_EPT_EXECUTE_ONLY_BIT;
+		msrs->ept_caps &= ept_caps;
+		msrs->ept_caps |= VMX_EPT_EXTENT_GLOBAL_BIT |
+			VMX_EPT_EXTENT_CONTEXT_BIT | VMX_EPT_2MB_PAGE_BIT |
+			VMX_EPT_1GB_PAGE_BIT;
+		if (enable_ept_ad_bits) {
+			msrs->secondary_ctls_high |=
+				SECONDARY_EXEC_ENABLE_PML;
+			msrs->ept_caps |= VMX_EPT_AD_BIT;
+		}
+	}
+
+	if (cpu_has_vmx_vmfunc()) {
+		msrs->secondary_ctls_high |=
+			SECONDARY_EXEC_ENABLE_VMFUNC;
+		/*
+		 * Advertise EPTP switching unconditionally
+		 * since we emulate it
+		 */
+		if (enable_ept)
+			msrs->vmfunc_controls =
+				VMX_VMFUNC_EPTP_SWITCHING;
+	}
+
+	/*
+	 * Old versions of KVM use the single-context version without
+	 * checking for support, so declare that it is supported even
+	 * though it is treated as global context.  The alternative is
+	 * not failing the single-context invvpid, and it is worse.
+	 */
+	if (enable_vpid) {
+		msrs->secondary_ctls_high |=
+			SECONDARY_EXEC_ENABLE_VPID;
+		msrs->vpid_caps = VMX_VPID_INVVPID_BIT |
+			VMX_VPID_EXTENT_SUPPORTED_MASK;
+	}
+
+	if (enable_unrestricted_guest)
+		msrs->secondary_ctls_high |=
+			SECONDARY_EXEC_UNRESTRICTED_GUEST;
+
+	if (flexpriority_enabled)
+		msrs->secondary_ctls_high |=
+			SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+
+	/* miscellaneous data */
+	rdmsr(MSR_IA32_VMX_MISC,
+		msrs->misc_low,
+		msrs->misc_high);
+	msrs->misc_low &= VMX_MISC_SAVE_EFER_LMA;
+	msrs->misc_low |=
+		MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS |
+		VMX_MISC_EMULATED_PREEMPTION_TIMER_RATE |
+		VMX_MISC_ACTIVITY_HLT;
+	msrs->misc_high = 0;
+
+	/*
+	 * This MSR reports some information about VMX support. We
+	 * should return information about the VMX we emulate for the
+	 * guest, and the VMCS structure we give it - not about the
+	 * VMX support of the underlying hardware.
+	 */
+	msrs->basic =
+		VMCS12_REVISION |
+		VMX_BASIC_TRUE_CTLS |
+		((u64)VMCS12_SIZE << VMX_BASIC_VMCS_SIZE_SHIFT) |
+		(VMX_BASIC_MEM_TYPE_WB << VMX_BASIC_MEM_TYPE_SHIFT);
+
+	if (cpu_has_vmx_basic_inout())
+		msrs->basic |= VMX_BASIC_INOUT;
+
+	/*
+	 * These MSRs specify bits which the guest must keep fixed on
+	 * while L1 is in VMXON mode (in L1's root mode, or running an L2).
+	 * We picked the standard core2 setting.
+	 */
+#define VMXON_CR0_ALWAYSON     (X86_CR0_PE | X86_CR0_PG | X86_CR0_NE)
+#define VMXON_CR4_ALWAYSON     X86_CR4_VMXE
+	msrs->cr0_fixed0 = VMXON_CR0_ALWAYSON;
+	msrs->cr4_fixed0 = VMXON_CR4_ALWAYSON;
+
+	/* These MSRs specify bits which the guest must keep fixed off. */
+	rdmsrl(MSR_IA32_VMX_CR0_FIXED1, msrs->cr0_fixed1);
+	rdmsrl(MSR_IA32_VMX_CR4_FIXED1, msrs->cr4_fixed1);
+
+	/* highest index: VMX_PREEMPTION_TIMER_VALUE */
+	msrs->vmcs_enum = VMCS12_MAX_FIELD_INDEX << 1;
+}
+
+void nested_vmx_hardware_unsetup(void)
+{
+	int i;
+
+	if (enable_shadow_vmcs) {
+		for (i = 0; i < VMX_BITMAP_NR; i++)
+			free_page((unsigned long)vmx_bitmap[i]);
+	}
+}
+
+__init int nested_vmx_hardware_setup(int (*exit_handlers[])(struct kvm_vcpu *))
+{
+	int i;
+
+	if (!cpu_has_vmx_shadow_vmcs())
+		enable_shadow_vmcs = 0;
+	if (enable_shadow_vmcs) {
+		for (i = 0; i < VMX_BITMAP_NR; i++) {
+			vmx_bitmap[i] = (unsigned long *)
+				__get_free_page(GFP_KERNEL);
+			if (!vmx_bitmap[i]) {
+				nested_vmx_hardware_unsetup();
+				return -ENOMEM;
+			}
+		}
+
+		init_vmcs_shadow_fields();
+	}
+
+	exit_handlers[EXIT_REASON_VMCLEAR]	= handle_vmclear,
+	exit_handlers[EXIT_REASON_VMLAUNCH]	= handle_vmlaunch,
+	exit_handlers[EXIT_REASON_VMPTRLD]	= handle_vmptrld,
+	exit_handlers[EXIT_REASON_VMPTRST]	= handle_vmptrst,
+	exit_handlers[EXIT_REASON_VMREAD]	= handle_vmread,
+	exit_handlers[EXIT_REASON_VMRESUME]	= handle_vmresume,
+	exit_handlers[EXIT_REASON_VMWRITE]	= handle_vmwrite,
+	exit_handlers[EXIT_REASON_VMOFF]	= handle_vmoff,
+	exit_handlers[EXIT_REASON_VMON]		= handle_vmon,
+	exit_handlers[EXIT_REASON_INVEPT]	= handle_invept,
+	exit_handlers[EXIT_REASON_INVVPID]	= handle_invvpid,
+	exit_handlers[EXIT_REASON_VMFUNC]	= handle_vmfunc,
+
+	kvm_x86_ops->check_nested_events = vmx_check_nested_events;
+	kvm_x86_ops->get_nested_state = vmx_get_nested_state;
+	kvm_x86_ops->set_nested_state = vmx_set_nested_state;
+	kvm_x86_ops->get_vmcs12_pages = nested_get_vmcs12_pages,
+	kvm_x86_ops->nested_enable_evmcs = nested_enable_evmcs;
+	kvm_x86_ops->nested_get_evmcs_version = nested_get_evmcs_version;
+
+	return 0;
+}
diff --git a/arch/x86/kvm/vmx/nested.h b/arch/x86/kvm/vmx/nested.h
new file mode 100644
index 000000000000..e847ff1019a2
--- /dev/null
+++ b/arch/x86/kvm/vmx/nested.h
@@ -0,0 +1,282 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_NESTED_H
+#define __KVM_X86_VMX_NESTED_H
+
+#include "kvm_cache_regs.h"
+#include "vmcs12.h"
+#include "vmx.h"
+
+void vmx_leave_nested(struct kvm_vcpu *vcpu);
+void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps,
+				bool apicv);
+void nested_vmx_hardware_unsetup(void);
+__init int nested_vmx_hardware_setup(int (*exit_handlers[])(struct kvm_vcpu *));
+void nested_vmx_vcpu_setup(void);
+void nested_vmx_free_vcpu(struct kvm_vcpu *vcpu);
+int nested_vmx_enter_non_root_mode(struct kvm_vcpu *vcpu, bool from_vmentry);
+bool nested_vmx_exit_reflected(struct kvm_vcpu *vcpu, u32 exit_reason);
+void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
+		       u32 exit_intr_info, unsigned long exit_qualification);
+void nested_sync_from_vmcs12(struct kvm_vcpu *vcpu);
+int vmx_set_vmx_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
+int vmx_get_vmx_msr(struct nested_vmx_msrs *msrs, u32 msr_index, u64 *pdata);
+int get_vmx_mem_address(struct kvm_vcpu *vcpu, unsigned long exit_qualification,
+			u32 vmx_instruction_info, bool wr, gva_t *ret);
+
+static inline struct vmcs12 *get_vmcs12(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.cached_vmcs12;
+}
+
+static inline struct vmcs12 *get_shadow_vmcs12(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.cached_shadow_vmcs12;
+}
+
+static inline int vmx_has_valid_vmcs12(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * In case we do two consecutive get/set_nested_state()s while L2 was
+	 * running hv_evmcs may end up not being mapped (we map it from
+	 * nested_vmx_run()/vmx_vcpu_run()). Check is_guest_mode() as we always
+	 * have vmcs12 if it is true.
+	 */
+	return is_guest_mode(vcpu) || vmx->nested.current_vmptr != -1ull ||
+		vmx->nested.hv_evmcs;
+}
+
+static inline unsigned long nested_ept_get_cr3(struct kvm_vcpu *vcpu)
+{
+	/* return the page table to be shadowed - in our case, EPT12 */
+	return get_vmcs12(vcpu)->ept_pointer;
+}
+
+static inline bool nested_ept_ad_enabled(struct kvm_vcpu *vcpu)
+{
+	return nested_ept_get_cr3(vcpu) & VMX_EPTP_AD_ENABLE_BIT;
+}
+
+/*
+ * Reflect a VM Exit into L1.
+ */
+static inline int nested_vmx_reflect_vmexit(struct kvm_vcpu *vcpu,
+					    u32 exit_reason)
+{
+	u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+
+	/*
+	 * At this point, the exit interruption info in exit_intr_info
+	 * is only valid for EXCEPTION_NMI exits.  For EXTERNAL_INTERRUPT
+	 * we need to query the in-kernel LAPIC.
+	 */
+	WARN_ON(exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT);
+	if ((exit_intr_info &
+	     (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) ==
+	    (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) {
+		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+		vmcs12->vm_exit_intr_error_code =
+			vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
+	}
+
+	nested_vmx_vmexit(vcpu, exit_reason, exit_intr_info,
+			  vmcs_readl(EXIT_QUALIFICATION));
+	return 1;
+}
+
+/*
+ * Return the cr0 value that a nested guest would read. This is a combination
+ * of the real cr0 used to run the guest (guest_cr0), and the bits shadowed by
+ * its hypervisor (cr0_read_shadow).
+ */
+static inline unsigned long nested_read_cr0(struct vmcs12 *fields)
+{
+	return (fields->guest_cr0 & ~fields->cr0_guest_host_mask) |
+		(fields->cr0_read_shadow & fields->cr0_guest_host_mask);
+}
+static inline unsigned long nested_read_cr4(struct vmcs12 *fields)
+{
+	return (fields->guest_cr4 & ~fields->cr4_guest_host_mask) |
+		(fields->cr4_read_shadow & fields->cr4_guest_host_mask);
+}
+
+static inline unsigned nested_cpu_vmx_misc_cr3_count(struct kvm_vcpu *vcpu)
+{
+	return vmx_misc_cr3_count(to_vmx(vcpu)->nested.msrs.misc_low);
+}
+
+/*
+ * Do the virtual VMX capability MSRs specify that L1 can use VMWRITE
+ * to modify any valid field of the VMCS, or are the VM-exit
+ * information fields read-only?
+ */
+static inline bool nested_cpu_has_vmwrite_any_field(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.msrs.misc_low &
+		MSR_IA32_VMX_MISC_VMWRITE_SHADOW_RO_FIELDS;
+}
+
+static inline bool nested_cpu_has_zero_length_injection(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.msrs.misc_low & VMX_MISC_ZERO_LEN_INS;
+}
+
+static inline bool nested_cpu_supports_monitor_trap_flag(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.msrs.procbased_ctls_high &
+			CPU_BASED_MONITOR_TRAP_FLAG;
+}
+
+static inline bool nested_cpu_has_vmx_shadow_vmcs(struct kvm_vcpu *vcpu)
+{
+	return to_vmx(vcpu)->nested.msrs.secondary_ctls_high &
+		SECONDARY_EXEC_SHADOW_VMCS;
+}
+
+static inline bool nested_cpu_has(struct vmcs12 *vmcs12, u32 bit)
+{
+	return vmcs12->cpu_based_vm_exec_control & bit;
+}
+
+static inline bool nested_cpu_has2(struct vmcs12 *vmcs12, u32 bit)
+{
+	return (vmcs12->cpu_based_vm_exec_control &
+			CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) &&
+		(vmcs12->secondary_vm_exec_control & bit);
+}
+
+static inline bool nested_cpu_has_preemption_timer(struct vmcs12 *vmcs12)
+{
+	return vmcs12->pin_based_vm_exec_control &
+		PIN_BASED_VMX_PREEMPTION_TIMER;
+}
+
+static inline bool nested_cpu_has_nmi_exiting(struct vmcs12 *vmcs12)
+{
+	return vmcs12->pin_based_vm_exec_control & PIN_BASED_NMI_EXITING;
+}
+
+static inline bool nested_cpu_has_virtual_nmis(struct vmcs12 *vmcs12)
+{
+	return vmcs12->pin_based_vm_exec_control & PIN_BASED_VIRTUAL_NMIS;
+}
+
+static inline int nested_cpu_has_ept(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_EPT);
+}
+
+static inline bool nested_cpu_has_xsaves(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_XSAVES);
+}
+
+static inline bool nested_cpu_has_pml(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_PML);
+}
+
+static inline bool nested_cpu_has_virt_x2apic_mode(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE);
+}
+
+static inline bool nested_cpu_has_vpid(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_VPID);
+}
+
+static inline bool nested_cpu_has_apic_reg_virt(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_APIC_REGISTER_VIRT);
+}
+
+static inline bool nested_cpu_has_vid(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
+}
+
+static inline bool nested_cpu_has_posted_intr(struct vmcs12 *vmcs12)
+{
+	return vmcs12->pin_based_vm_exec_control & PIN_BASED_POSTED_INTR;
+}
+
+static inline bool nested_cpu_has_vmfunc(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_VMFUNC);
+}
+
+static inline bool nested_cpu_has_eptp_switching(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has_vmfunc(vmcs12) &&
+		(vmcs12->vm_function_control &
+		 VMX_VMFUNC_EPTP_SWITCHING);
+}
+
+static inline bool nested_cpu_has_shadow_vmcs(struct vmcs12 *vmcs12)
+{
+	return nested_cpu_has2(vmcs12, SECONDARY_EXEC_SHADOW_VMCS);
+}
+
+static inline bool nested_cpu_has_save_preemption_timer(struct vmcs12 *vmcs12)
+{
+	return vmcs12->vm_exit_controls &
+	    VM_EXIT_SAVE_VMX_PREEMPTION_TIMER;
+}
+
+/*
+ * In nested virtualization, check if L1 asked to exit on external interrupts.
+ * For most existing hypervisors, this will always return true.
+ */
+static inline bool nested_exit_on_intr(struct kvm_vcpu *vcpu)
+{
+	return get_vmcs12(vcpu)->pin_based_vm_exec_control &
+		PIN_BASED_EXT_INTR_MASK;
+}
+
+/*
+ * if fixed0[i] == 1: val[i] must be 1
+ * if fixed1[i] == 0: val[i] must be 0
+ */
+static inline bool fixed_bits_valid(u64 val, u64 fixed0, u64 fixed1)
+{
+	return ((val & fixed1) | fixed0) == val;
+}
+
+static bool nested_guest_cr0_valid(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr0_fixed0;
+	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr0_fixed1;
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	if (to_vmx(vcpu)->nested.msrs.secondary_ctls_high &
+		SECONDARY_EXEC_UNRESTRICTED_GUEST &&
+	    nested_cpu_has2(vmcs12, SECONDARY_EXEC_UNRESTRICTED_GUEST))
+		fixed0 &= ~(X86_CR0_PE | X86_CR0_PG);
+
+	return fixed_bits_valid(val, fixed0, fixed1);
+}
+
+static bool nested_host_cr0_valid(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr0_fixed0;
+	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr0_fixed1;
+
+	return fixed_bits_valid(val, fixed0, fixed1);
+}
+
+static bool nested_cr4_valid(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr4_fixed0;
+	u64 fixed1 = to_vmx(vcpu)->nested.msrs.cr4_fixed1;
+
+	return fixed_bits_valid(val, fixed0, fixed1);
+}
+
+/* No difference in the restrictions on guest and host CR4 in VMX operation. */
+#define nested_guest_cr4_valid	nested_cr4_valid
+#define nested_host_cr4_valid	nested_cr4_valid
+
+#endif /* __KVM_X86_VMX_NESTED_H */
diff --git a/arch/x86/kvm/vmx/ops.h b/arch/x86/kvm/vmx/ops.h
new file mode 100644
index 000000000000..b8e50f76fefc
--- /dev/null
+++ b/arch/x86/kvm/vmx/ops.h
@@ -0,0 +1,285 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_INSN_H
+#define __KVM_X86_VMX_INSN_H
+
+#include <linux/nospec.h>
+
+#include <asm/kvm_host.h>
+#include <asm/vmx.h>
+
+#include "evmcs.h"
+#include "vmcs.h"
+
+#define __ex(x) __kvm_handle_fault_on_reboot(x)
+#define __ex_clear(x, reg) \
+	____kvm_handle_fault_on_reboot(x, "xor " reg ", " reg)
+
+static __always_inline void vmcs_check16(unsigned long field)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
+			 "16-bit accessor invalid for 64-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
+			 "16-bit accessor invalid for 64-bit high field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
+			 "16-bit accessor invalid for 32-bit high field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
+			 "16-bit accessor invalid for natural width field");
+}
+
+static __always_inline void vmcs_check32(unsigned long field)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
+			 "32-bit accessor invalid for 16-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
+			 "32-bit accessor invalid for natural width field");
+}
+
+static __always_inline void vmcs_check64(unsigned long field)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
+			 "64-bit accessor invalid for 16-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
+			 "64-bit accessor invalid for 64-bit high field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
+			 "64-bit accessor invalid for 32-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
+			 "64-bit accessor invalid for natural width field");
+}
+
+static __always_inline void vmcs_checkl(unsigned long field)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
+			 "Natural width accessor invalid for 16-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
+			 "Natural width accessor invalid for 64-bit field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
+			 "Natural width accessor invalid for 64-bit high field");
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
+			 "Natural width accessor invalid for 32-bit field");
+}
+
+static __always_inline unsigned long __vmcs_readl(unsigned long field)
+{
+	unsigned long value;
+
+	asm volatile (__ex_clear("vmread %1, %0", "%k0")
+		      : "=r"(value) : "r"(field));
+	return value;
+}
+
+static __always_inline u16 vmcs_read16(unsigned long field)
+{
+	vmcs_check16(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_read16(field);
+	return __vmcs_readl(field);
+}
+
+static __always_inline u32 vmcs_read32(unsigned long field)
+{
+	vmcs_check32(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_read32(field);
+	return __vmcs_readl(field);
+}
+
+static __always_inline u64 vmcs_read64(unsigned long field)
+{
+	vmcs_check64(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_read64(field);
+#ifdef CONFIG_X86_64
+	return __vmcs_readl(field);
+#else
+	return __vmcs_readl(field) | ((u64)__vmcs_readl(field+1) << 32);
+#endif
+}
+
+static __always_inline unsigned long vmcs_readl(unsigned long field)
+{
+	vmcs_checkl(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_read64(field);
+	return __vmcs_readl(field);
+}
+
+static noinline void vmwrite_error(unsigned long field, unsigned long value)
+{
+	printk(KERN_ERR "vmwrite error: reg %lx value %lx (err %d)\n",
+	       field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
+	dump_stack();
+}
+
+static __always_inline void __vmcs_writel(unsigned long field, unsigned long value)
+{
+	bool error;
+
+	asm volatile (__ex("vmwrite %2, %1") CC_SET(na)
+		      : CC_OUT(na) (error) : "r"(field), "rm"(value));
+	if (unlikely(error))
+		vmwrite_error(field, value);
+}
+
+static __always_inline void vmcs_write16(unsigned long field, u16 value)
+{
+	vmcs_check16(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write16(field, value);
+
+	__vmcs_writel(field, value);
+}
+
+static __always_inline void vmcs_write32(unsigned long field, u32 value)
+{
+	vmcs_check32(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write32(field, value);
+
+	__vmcs_writel(field, value);
+}
+
+static __always_inline void vmcs_write64(unsigned long field, u64 value)
+{
+	vmcs_check64(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write64(field, value);
+
+	__vmcs_writel(field, value);
+#ifndef CONFIG_X86_64
+	asm volatile ("");
+	__vmcs_writel(field+1, value >> 32);
+#endif
+}
+
+static __always_inline void vmcs_writel(unsigned long field, unsigned long value)
+{
+	vmcs_checkl(field);
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write64(field, value);
+
+	__vmcs_writel(field, value);
+}
+
+static __always_inline void vmcs_clear_bits(unsigned long field, u32 mask)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
+			 "vmcs_clear_bits does not support 64-bit fields");
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write32(field, evmcs_read32(field) & ~mask);
+
+	__vmcs_writel(field, __vmcs_readl(field) & ~mask);
+}
+
+static __always_inline void vmcs_set_bits(unsigned long field, u32 mask)
+{
+	BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x2000,
+			 "vmcs_set_bits does not support 64-bit fields");
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_write32(field, evmcs_read32(field) | mask);
+
+	__vmcs_writel(field, __vmcs_readl(field) | mask);
+}
+
+static inline void vmcs_clear(struct vmcs *vmcs)
+{
+	u64 phys_addr = __pa(vmcs);
+	bool error;
+
+	asm volatile (__ex("vmclear %1") CC_SET(na)
+		      : CC_OUT(na) (error) : "m"(phys_addr));
+	if (unlikely(error))
+		printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
+		       vmcs, phys_addr);
+}
+
+static inline void vmcs_load(struct vmcs *vmcs)
+{
+	u64 phys_addr = __pa(vmcs);
+	bool error;
+
+	if (static_branch_unlikely(&enable_evmcs))
+		return evmcs_load(phys_addr);
+
+	asm volatile (__ex("vmptrld %1") CC_SET(na)
+		      : CC_OUT(na) (error) : "m"(phys_addr));
+	if (unlikely(error))
+		printk(KERN_ERR "kvm: vmptrld %p/%llx failed\n",
+		       vmcs, phys_addr);
+}
+
+static inline void __invvpid(unsigned long ext, u16 vpid, gva_t gva)
+{
+	struct {
+		u64 vpid : 16;
+		u64 rsvd : 48;
+		u64 gva;
+	} operand = { vpid, 0, gva };
+	bool error;
+
+	asm volatile (__ex("invvpid %2, %1") CC_SET(na)
+		      : CC_OUT(na) (error) : "r"(ext), "m"(operand));
+	BUG_ON(error);
+}
+
+static inline void __invept(unsigned long ext, u64 eptp, gpa_t gpa)
+{
+	struct {
+		u64 eptp, gpa;
+	} operand = {eptp, gpa};
+	bool error;
+
+	asm volatile (__ex("invept %2, %1") CC_SET(na)
+		      : CC_OUT(na) (error) : "r"(ext), "m"(operand));
+	BUG_ON(error);
+}
+
+static inline bool vpid_sync_vcpu_addr(int vpid, gva_t addr)
+{
+	if (vpid == 0)
+		return true;
+
+	if (cpu_has_vmx_invvpid_individual_addr()) {
+		__invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR, vpid, addr);
+		return true;
+	}
+
+	return false;
+}
+
+static inline void vpid_sync_vcpu_single(int vpid)
+{
+	if (vpid == 0)
+		return;
+
+	if (cpu_has_vmx_invvpid_single())
+		__invvpid(VMX_VPID_EXTENT_SINGLE_CONTEXT, vpid, 0);
+}
+
+static inline void vpid_sync_vcpu_global(void)
+{
+	if (cpu_has_vmx_invvpid_global())
+		__invvpid(VMX_VPID_EXTENT_ALL_CONTEXT, 0, 0);
+}
+
+static inline void vpid_sync_context(int vpid)
+{
+	if (cpu_has_vmx_invvpid_single())
+		vpid_sync_vcpu_single(vpid);
+	else
+		vpid_sync_vcpu_global();
+}
+
+static inline void ept_sync_global(void)
+{
+	__invept(VMX_EPT_EXTENT_GLOBAL, 0, 0);
+}
+
+static inline void ept_sync_context(u64 eptp)
+{
+	if (cpu_has_vmx_invept_context())
+		__invept(VMX_EPT_EXTENT_CONTEXT, eptp, 0);
+	else
+		ept_sync_global();
+}
+
+#endif /* __KVM_X86_VMX_INSN_H */
diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c
index 5ab4a364348e..5ab4a364348e 100644
--- a/arch/x86/kvm/pmu_intel.c
+++ b/arch/x86/kvm/vmx/pmu_intel.c
diff --git a/arch/x86/kvm/vmx/vmcs.h b/arch/x86/kvm/vmx/vmcs.h
new file mode 100644
index 000000000000..6def3ba88e3b
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmcs.h
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_VMCS_H
+#define __KVM_X86_VMX_VMCS_H
+
+#include <linux/ktime.h>
+#include <linux/list.h>
+#include <linux/nospec.h>
+
+#include <asm/kvm.h>
+#include <asm/vmx.h>
+
+#include "capabilities.h"
+
+struct vmcs_hdr {
+	u32 revision_id:31;
+	u32 shadow_vmcs:1;
+};
+
+struct vmcs {
+	struct vmcs_hdr hdr;
+	u32 abort;
+	char data[0];
+};
+
+DECLARE_PER_CPU(struct vmcs *, current_vmcs);
+
+/*
+ * vmcs_host_state tracks registers that are loaded from the VMCS on VMEXIT
+ * and whose values change infrequently, but are not constant.  I.e. this is
+ * used as a write-through cache of the corresponding VMCS fields.
+ */
+struct vmcs_host_state {
+	unsigned long cr3;	/* May not match real cr3 */
+	unsigned long cr4;	/* May not match real cr4 */
+	unsigned long gs_base;
+	unsigned long fs_base;
+
+	u16           fs_sel, gs_sel, ldt_sel;
+#ifdef CONFIG_X86_64
+	u16           ds_sel, es_sel;
+#endif
+};
+
+/*
+ * Track a VMCS that may be loaded on a certain CPU. If it is (cpu!=-1), also
+ * remember whether it was VMLAUNCHed, and maintain a linked list of all VMCSs
+ * loaded on this CPU (so we can clear them if the CPU goes down).
+ */
+struct loaded_vmcs {
+	struct vmcs *vmcs;
+	struct vmcs *shadow_vmcs;
+	int cpu;
+	bool launched;
+	bool nmi_known_unmasked;
+	bool hv_timer_armed;
+	/* Support for vnmi-less CPUs */
+	int soft_vnmi_blocked;
+	ktime_t entry_time;
+	s64 vnmi_blocked_time;
+	unsigned long *msr_bitmap;
+	struct list_head loaded_vmcss_on_cpu_link;
+	struct vmcs_host_state host_state;
+};
+
+static inline bool is_exception_n(u32 intr_info, u8 vector)
+{
+	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
+			     INTR_INFO_VALID_MASK)) ==
+		(INTR_TYPE_HARD_EXCEPTION | vector | INTR_INFO_VALID_MASK);
+}
+
+static inline bool is_debug(u32 intr_info)
+{
+	return is_exception_n(intr_info, DB_VECTOR);
+}
+
+static inline bool is_breakpoint(u32 intr_info)
+{
+	return is_exception_n(intr_info, BP_VECTOR);
+}
+
+static inline bool is_page_fault(u32 intr_info)
+{
+	return is_exception_n(intr_info, PF_VECTOR);
+}
+
+static inline bool is_invalid_opcode(u32 intr_info)
+{
+	return is_exception_n(intr_info, UD_VECTOR);
+}
+
+static inline bool is_gp_fault(u32 intr_info)
+{
+	return is_exception_n(intr_info, GP_VECTOR);
+}
+
+static inline bool is_machine_check(u32 intr_info)
+{
+	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK |
+			     INTR_INFO_VALID_MASK)) ==
+		(INTR_TYPE_HARD_EXCEPTION | MC_VECTOR | INTR_INFO_VALID_MASK);
+}
+
+/* Undocumented: icebp/int1 */
+static inline bool is_icebp(u32 intr_info)
+{
+	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
+		== (INTR_TYPE_PRIV_SW_EXCEPTION | INTR_INFO_VALID_MASK);
+}
+
+static inline bool is_nmi(u32 intr_info)
+{
+	return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK))
+		== (INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK);
+}
+
+enum vmcs_field_width {
+	VMCS_FIELD_WIDTH_U16 = 0,
+	VMCS_FIELD_WIDTH_U64 = 1,
+	VMCS_FIELD_WIDTH_U32 = 2,
+	VMCS_FIELD_WIDTH_NATURAL_WIDTH = 3
+};
+
+static inline int vmcs_field_width(unsigned long field)
+{
+	if (0x1 & field)	/* the *_HIGH fields are all 32 bit */
+		return VMCS_FIELD_WIDTH_U32;
+	return (field >> 13) & 0x3;
+}
+
+static inline int vmcs_field_readonly(unsigned long field)
+{
+	return (((field >> 10) & 0x3) == 1);
+}
+
+#endif /* __KVM_X86_VMX_VMCS_H */
diff --git a/arch/x86/kvm/vmx/vmcs12.c b/arch/x86/kvm/vmx/vmcs12.c
new file mode 100644
index 000000000000..53dfb401316d
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmcs12.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "vmcs12.h"
+
+#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
+#define VMCS12_OFFSET(x) offsetof(struct vmcs12, x)
+#define FIELD(number, name)	[ROL16(number, 6)] = VMCS12_OFFSET(name)
+#define FIELD64(number, name)						\
+	FIELD(number, name),						\
+	[ROL16(number##_HIGH, 6)] = VMCS12_OFFSET(name) + sizeof(u32)
+
+const unsigned short vmcs_field_to_offset_table[] = {
+	FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id),
+	FIELD(POSTED_INTR_NV, posted_intr_nv),
+	FIELD(GUEST_ES_SELECTOR, guest_es_selector),
+	FIELD(GUEST_CS_SELECTOR, guest_cs_selector),
+	FIELD(GUEST_SS_SELECTOR, guest_ss_selector),
+	FIELD(GUEST_DS_SELECTOR, guest_ds_selector),
+	FIELD(GUEST_FS_SELECTOR, guest_fs_selector),
+	FIELD(GUEST_GS_SELECTOR, guest_gs_selector),
+	FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector),
+	FIELD(GUEST_TR_SELECTOR, guest_tr_selector),
+	FIELD(GUEST_INTR_STATUS, guest_intr_status),
+	FIELD(GUEST_PML_INDEX, guest_pml_index),
+	FIELD(HOST_ES_SELECTOR, host_es_selector),
+	FIELD(HOST_CS_SELECTOR, host_cs_selector),
+	FIELD(HOST_SS_SELECTOR, host_ss_selector),
+	FIELD(HOST_DS_SELECTOR, host_ds_selector),
+	FIELD(HOST_FS_SELECTOR, host_fs_selector),
+	FIELD(HOST_GS_SELECTOR, host_gs_selector),
+	FIELD(HOST_TR_SELECTOR, host_tr_selector),
+	FIELD64(IO_BITMAP_A, io_bitmap_a),
+	FIELD64(IO_BITMAP_B, io_bitmap_b),
+	FIELD64(MSR_BITMAP, msr_bitmap),
+	FIELD64(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr),
+	FIELD64(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr),
+	FIELD64(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr),
+	FIELD64(PML_ADDRESS, pml_address),
+	FIELD64(TSC_OFFSET, tsc_offset),
+	FIELD64(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr),
+	FIELD64(APIC_ACCESS_ADDR, apic_access_addr),
+	FIELD64(POSTED_INTR_DESC_ADDR, posted_intr_desc_addr),
+	FIELD64(VM_FUNCTION_CONTROL, vm_function_control),
+	FIELD64(EPT_POINTER, ept_pointer),
+	FIELD64(EOI_EXIT_BITMAP0, eoi_exit_bitmap0),
+	FIELD64(EOI_EXIT_BITMAP1, eoi_exit_bitmap1),
+	FIELD64(EOI_EXIT_BITMAP2, eoi_exit_bitmap2),
+	FIELD64(EOI_EXIT_BITMAP3, eoi_exit_bitmap3),
+	FIELD64(EPTP_LIST_ADDRESS, eptp_list_address),
+	FIELD64(VMREAD_BITMAP, vmread_bitmap),
+	FIELD64(VMWRITE_BITMAP, vmwrite_bitmap),
+	FIELD64(XSS_EXIT_BITMAP, xss_exit_bitmap),
+	FIELD64(GUEST_PHYSICAL_ADDRESS, guest_physical_address),
+	FIELD64(VMCS_LINK_POINTER, vmcs_link_pointer),
+	FIELD64(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl),
+	FIELD64(GUEST_IA32_PAT, guest_ia32_pat),
+	FIELD64(GUEST_IA32_EFER, guest_ia32_efer),
+	FIELD64(GUEST_IA32_PERF_GLOBAL_CTRL, guest_ia32_perf_global_ctrl),
+	FIELD64(GUEST_PDPTR0, guest_pdptr0),
+	FIELD64(GUEST_PDPTR1, guest_pdptr1),
+	FIELD64(GUEST_PDPTR2, guest_pdptr2),
+	FIELD64(GUEST_PDPTR3, guest_pdptr3),
+	FIELD64(GUEST_BNDCFGS, guest_bndcfgs),
+	FIELD64(HOST_IA32_PAT, host_ia32_pat),
+	FIELD64(HOST_IA32_EFER, host_ia32_efer),
+	FIELD64(HOST_IA32_PERF_GLOBAL_CTRL, host_ia32_perf_global_ctrl),
+	FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control),
+	FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control),
+	FIELD(EXCEPTION_BITMAP, exception_bitmap),
+	FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask),
+	FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match),
+	FIELD(CR3_TARGET_COUNT, cr3_target_count),
+	FIELD(VM_EXIT_CONTROLS, vm_exit_controls),
+	FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count),
+	FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count),
+	FIELD(VM_ENTRY_CONTROLS, vm_entry_controls),
+	FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count),
+	FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field),
+	FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE, vm_entry_exception_error_code),
+	FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len),
+	FIELD(TPR_THRESHOLD, tpr_threshold),
+	FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control),
+	FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error),
+	FIELD(VM_EXIT_REASON, vm_exit_reason),
+	FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info),
+	FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code),
+	FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field),
+	FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code),
+	FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len),
+	FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info),
+	FIELD(GUEST_ES_LIMIT, guest_es_limit),
+	FIELD(GUEST_CS_LIMIT, guest_cs_limit),
+	FIELD(GUEST_SS_LIMIT, guest_ss_limit),
+	FIELD(GUEST_DS_LIMIT, guest_ds_limit),
+	FIELD(GUEST_FS_LIMIT, guest_fs_limit),
+	FIELD(GUEST_GS_LIMIT, guest_gs_limit),
+	FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit),
+	FIELD(GUEST_TR_LIMIT, guest_tr_limit),
+	FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit),
+	FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit),
+	FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes),
+	FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes),
+	FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes),
+	FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes),
+	FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes),
+	FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes),
+	FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes),
+	FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes),
+	FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info),
+	FIELD(GUEST_ACTIVITY_STATE, guest_activity_state),
+	FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs),
+	FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs),
+	FIELD(VMX_PREEMPTION_TIMER_VALUE, vmx_preemption_timer_value),
+	FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask),
+	FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask),
+	FIELD(CR0_READ_SHADOW, cr0_read_shadow),
+	FIELD(CR4_READ_SHADOW, cr4_read_shadow),
+	FIELD(CR3_TARGET_VALUE0, cr3_target_value0),
+	FIELD(CR3_TARGET_VALUE1, cr3_target_value1),
+	FIELD(CR3_TARGET_VALUE2, cr3_target_value2),
+	FIELD(CR3_TARGET_VALUE3, cr3_target_value3),
+	FIELD(EXIT_QUALIFICATION, exit_qualification),
+	FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address),
+	FIELD(GUEST_CR0, guest_cr0),
+	FIELD(GUEST_CR3, guest_cr3),
+	FIELD(GUEST_CR4, guest_cr4),
+	FIELD(GUEST_ES_BASE, guest_es_base),
+	FIELD(GUEST_CS_BASE, guest_cs_base),
+	FIELD(GUEST_SS_BASE, guest_ss_base),
+	FIELD(GUEST_DS_BASE, guest_ds_base),
+	FIELD(GUEST_FS_BASE, guest_fs_base),
+	FIELD(GUEST_GS_BASE, guest_gs_base),
+	FIELD(GUEST_LDTR_BASE, guest_ldtr_base),
+	FIELD(GUEST_TR_BASE, guest_tr_base),
+	FIELD(GUEST_GDTR_BASE, guest_gdtr_base),
+	FIELD(GUEST_IDTR_BASE, guest_idtr_base),
+	FIELD(GUEST_DR7, guest_dr7),
+	FIELD(GUEST_RSP, guest_rsp),
+	FIELD(GUEST_RIP, guest_rip),
+	FIELD(GUEST_RFLAGS, guest_rflags),
+	FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions),
+	FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp),
+	FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip),
+	FIELD(HOST_CR0, host_cr0),
+	FIELD(HOST_CR3, host_cr3),
+	FIELD(HOST_CR4, host_cr4),
+	FIELD(HOST_FS_BASE, host_fs_base),
+	FIELD(HOST_GS_BASE, host_gs_base),
+	FIELD(HOST_TR_BASE, host_tr_base),
+	FIELD(HOST_GDTR_BASE, host_gdtr_base),
+	FIELD(HOST_IDTR_BASE, host_idtr_base),
+	FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp),
+	FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip),
+	FIELD(HOST_RSP, host_rsp),
+	FIELD(HOST_RIP, host_rip),
+};
+const unsigned int nr_vmcs12_fields = ARRAY_SIZE(vmcs_field_to_offset_table);
diff --git a/arch/x86/kvm/vmx/vmcs12.h b/arch/x86/kvm/vmx/vmcs12.h
new file mode 100644
index 000000000000..3a742428ad17
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmcs12.h
@@ -0,0 +1,462 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_VMCS12_H
+#define __KVM_X86_VMX_VMCS12_H
+
+#include <linux/build_bug.h>
+
+#include "vmcs.h"
+
+/*
+ * struct vmcs12 describes the state that our guest hypervisor (L1) keeps for a
+ * single nested guest (L2), hence the name vmcs12. Any VMX implementation has
+ * a VMCS structure, and vmcs12 is our emulated VMX's VMCS. This structure is
+ * stored in guest memory specified by VMPTRLD, but is opaque to the guest,
+ * which must access it using VMREAD/VMWRITE/VMCLEAR instructions.
+ * More than one of these structures may exist, if L1 runs multiple L2 guests.
+ * nested_vmx_run() will use the data here to build the vmcs02: a VMCS for the
+ * underlying hardware which will be used to run L2.
+ * This structure is packed to ensure that its layout is identical across
+ * machines (necessary for live migration).
+ *
+ * IMPORTANT: Changing the layout of existing fields in this structure
+ * will break save/restore compatibility with older kvm releases. When
+ * adding new fields, either use space in the reserved padding* arrays
+ * or add the new fields to the end of the structure.
+ */
+typedef u64 natural_width;
+struct __packed vmcs12 {
+	/* According to the Intel spec, a VMCS region must start with the
+	 * following two fields. Then follow implementation-specific data.
+	 */
+	struct vmcs_hdr hdr;
+	u32 abort;
+
+	u32 launch_state; /* set to 0 by VMCLEAR, to 1 by VMLAUNCH */
+	u32 padding[7]; /* room for future expansion */
+
+	u64 io_bitmap_a;
+	u64 io_bitmap_b;
+	u64 msr_bitmap;
+	u64 vm_exit_msr_store_addr;
+	u64 vm_exit_msr_load_addr;
+	u64 vm_entry_msr_load_addr;
+	u64 tsc_offset;
+	u64 virtual_apic_page_addr;
+	u64 apic_access_addr;
+	u64 posted_intr_desc_addr;
+	u64 ept_pointer;
+	u64 eoi_exit_bitmap0;
+	u64 eoi_exit_bitmap1;
+	u64 eoi_exit_bitmap2;
+	u64 eoi_exit_bitmap3;
+	u64 xss_exit_bitmap;
+	u64 guest_physical_address;
+	u64 vmcs_link_pointer;
+	u64 guest_ia32_debugctl;
+	u64 guest_ia32_pat;
+	u64 guest_ia32_efer;
+	u64 guest_ia32_perf_global_ctrl;
+	u64 guest_pdptr0;
+	u64 guest_pdptr1;
+	u64 guest_pdptr2;
+	u64 guest_pdptr3;
+	u64 guest_bndcfgs;
+	u64 host_ia32_pat;
+	u64 host_ia32_efer;
+	u64 host_ia32_perf_global_ctrl;
+	u64 vmread_bitmap;
+	u64 vmwrite_bitmap;
+	u64 vm_function_control;
+	u64 eptp_list_address;
+	u64 pml_address;
+	u64 padding64[3]; /* room for future expansion */
+	/*
+	 * To allow migration of L1 (complete with its L2 guests) between
+	 * machines of different natural widths (32 or 64 bit), we cannot have
+	 * unsigned long fields with no explicit size. We use u64 (aliased
+	 * natural_width) instead. Luckily, x86 is little-endian.
+	 */
+	natural_width cr0_guest_host_mask;
+	natural_width cr4_guest_host_mask;
+	natural_width cr0_read_shadow;
+	natural_width cr4_read_shadow;
+	natural_width cr3_target_value0;
+	natural_width cr3_target_value1;
+	natural_width cr3_target_value2;
+	natural_width cr3_target_value3;
+	natural_width exit_qualification;
+	natural_width guest_linear_address;
+	natural_width guest_cr0;
+	natural_width guest_cr3;
+	natural_width guest_cr4;
+	natural_width guest_es_base;
+	natural_width guest_cs_base;
+	natural_width guest_ss_base;
+	natural_width guest_ds_base;
+	natural_width guest_fs_base;
+	natural_width guest_gs_base;
+	natural_width guest_ldtr_base;
+	natural_width guest_tr_base;
+	natural_width guest_gdtr_base;
+	natural_width guest_idtr_base;
+	natural_width guest_dr7;
+	natural_width guest_rsp;
+	natural_width guest_rip;
+	natural_width guest_rflags;
+	natural_width guest_pending_dbg_exceptions;
+	natural_width guest_sysenter_esp;
+	natural_width guest_sysenter_eip;
+	natural_width host_cr0;
+	natural_width host_cr3;
+	natural_width host_cr4;
+	natural_width host_fs_base;
+	natural_width host_gs_base;
+	natural_width host_tr_base;
+	natural_width host_gdtr_base;
+	natural_width host_idtr_base;
+	natural_width host_ia32_sysenter_esp;
+	natural_width host_ia32_sysenter_eip;
+	natural_width host_rsp;
+	natural_width host_rip;
+	natural_width paddingl[8]; /* room for future expansion */
+	u32 pin_based_vm_exec_control;
+	u32 cpu_based_vm_exec_control;
+	u32 exception_bitmap;
+	u32 page_fault_error_code_mask;
+	u32 page_fault_error_code_match;
+	u32 cr3_target_count;
+	u32 vm_exit_controls;
+	u32 vm_exit_msr_store_count;
+	u32 vm_exit_msr_load_count;
+	u32 vm_entry_controls;
+	u32 vm_entry_msr_load_count;
+	u32 vm_entry_intr_info_field;
+	u32 vm_entry_exception_error_code;
+	u32 vm_entry_instruction_len;
+	u32 tpr_threshold;
+	u32 secondary_vm_exec_control;
+	u32 vm_instruction_error;
+	u32 vm_exit_reason;
+	u32 vm_exit_intr_info;
+	u32 vm_exit_intr_error_code;
+	u32 idt_vectoring_info_field;
+	u32 idt_vectoring_error_code;
+	u32 vm_exit_instruction_len;
+	u32 vmx_instruction_info;
+	u32 guest_es_limit;
+	u32 guest_cs_limit;
+	u32 guest_ss_limit;
+	u32 guest_ds_limit;
+	u32 guest_fs_limit;
+	u32 guest_gs_limit;
+	u32 guest_ldtr_limit;
+	u32 guest_tr_limit;
+	u32 guest_gdtr_limit;
+	u32 guest_idtr_limit;
+	u32 guest_es_ar_bytes;
+	u32 guest_cs_ar_bytes;
+	u32 guest_ss_ar_bytes;
+	u32 guest_ds_ar_bytes;
+	u32 guest_fs_ar_bytes;
+	u32 guest_gs_ar_bytes;
+	u32 guest_ldtr_ar_bytes;
+	u32 guest_tr_ar_bytes;
+	u32 guest_interruptibility_info;
+	u32 guest_activity_state;
+	u32 guest_sysenter_cs;
+	u32 host_ia32_sysenter_cs;
+	u32 vmx_preemption_timer_value;
+	u32 padding32[7]; /* room for future expansion */
+	u16 virtual_processor_id;
+	u16 posted_intr_nv;
+	u16 guest_es_selector;
+	u16 guest_cs_selector;
+	u16 guest_ss_selector;
+	u16 guest_ds_selector;
+	u16 guest_fs_selector;
+	u16 guest_gs_selector;
+	u16 guest_ldtr_selector;
+	u16 guest_tr_selector;
+	u16 guest_intr_status;
+	u16 host_es_selector;
+	u16 host_cs_selector;
+	u16 host_ss_selector;
+	u16 host_ds_selector;
+	u16 host_fs_selector;
+	u16 host_gs_selector;
+	u16 host_tr_selector;
+	u16 guest_pml_index;
+};
+
+/*
+ * VMCS12_REVISION is an arbitrary id that should be changed if the content or
+ * layout of struct vmcs12 is changed. MSR_IA32_VMX_BASIC returns this id, and
+ * VMPTRLD verifies that the VMCS region that L1 is loading contains this id.
+ *
+ * IMPORTANT: Changing this value will break save/restore compatibility with
+ * older kvm releases.
+ */
+#define VMCS12_REVISION 0x11e57ed0
+
+/*
+ * VMCS12_SIZE is the number of bytes L1 should allocate for the VMXON region
+ * and any VMCS region. Although only sizeof(struct vmcs12) are used by the
+ * current implementation, 4K are reserved to avoid future complications.
+ */
+#define VMCS12_SIZE 0x1000
+
+/*
+ * VMCS12_MAX_FIELD_INDEX is the highest index value used in any
+ * supported VMCS12 field encoding.
+ */
+#define VMCS12_MAX_FIELD_INDEX 0x17
+
+/*
+ * For save/restore compatibility, the vmcs12 field offsets must not change.
+ */
+#define CHECK_OFFSET(field, loc)				\
+	BUILD_BUG_ON_MSG(offsetof(struct vmcs12, field) != (loc),	\
+		"Offset of " #field " in struct vmcs12 has changed.")
+
+static inline void vmx_check_vmcs12_offsets(void)
+{
+	CHECK_OFFSET(hdr, 0);
+	CHECK_OFFSET(abort, 4);
+	CHECK_OFFSET(launch_state, 8);
+	CHECK_OFFSET(io_bitmap_a, 40);
+	CHECK_OFFSET(io_bitmap_b, 48);
+	CHECK_OFFSET(msr_bitmap, 56);
+	CHECK_OFFSET(vm_exit_msr_store_addr, 64);
+	CHECK_OFFSET(vm_exit_msr_load_addr, 72);
+	CHECK_OFFSET(vm_entry_msr_load_addr, 80);
+	CHECK_OFFSET(tsc_offset, 88);
+	CHECK_OFFSET(virtual_apic_page_addr, 96);
+	CHECK_OFFSET(apic_access_addr, 104);
+	CHECK_OFFSET(posted_intr_desc_addr, 112);
+	CHECK_OFFSET(ept_pointer, 120);
+	CHECK_OFFSET(eoi_exit_bitmap0, 128);
+	CHECK_OFFSET(eoi_exit_bitmap1, 136);
+	CHECK_OFFSET(eoi_exit_bitmap2, 144);
+	CHECK_OFFSET(eoi_exit_bitmap3, 152);
+	CHECK_OFFSET(xss_exit_bitmap, 160);
+	CHECK_OFFSET(guest_physical_address, 168);
+	CHECK_OFFSET(vmcs_link_pointer, 176);
+	CHECK_OFFSET(guest_ia32_debugctl, 184);
+	CHECK_OFFSET(guest_ia32_pat, 192);
+	CHECK_OFFSET(guest_ia32_efer, 200);
+	CHECK_OFFSET(guest_ia32_perf_global_ctrl, 208);
+	CHECK_OFFSET(guest_pdptr0, 216);
+	CHECK_OFFSET(guest_pdptr1, 224);
+	CHECK_OFFSET(guest_pdptr2, 232);
+	CHECK_OFFSET(guest_pdptr3, 240);
+	CHECK_OFFSET(guest_bndcfgs, 248);
+	CHECK_OFFSET(host_ia32_pat, 256);
+	CHECK_OFFSET(host_ia32_efer, 264);
+	CHECK_OFFSET(host_ia32_perf_global_ctrl, 272);
+	CHECK_OFFSET(vmread_bitmap, 280);
+	CHECK_OFFSET(vmwrite_bitmap, 288);
+	CHECK_OFFSET(vm_function_control, 296);
+	CHECK_OFFSET(eptp_list_address, 304);
+	CHECK_OFFSET(pml_address, 312);
+	CHECK_OFFSET(cr0_guest_host_mask, 344);
+	CHECK_OFFSET(cr4_guest_host_mask, 352);
+	CHECK_OFFSET(cr0_read_shadow, 360);
+	CHECK_OFFSET(cr4_read_shadow, 368);
+	CHECK_OFFSET(cr3_target_value0, 376);
+	CHECK_OFFSET(cr3_target_value1, 384);
+	CHECK_OFFSET(cr3_target_value2, 392);
+	CHECK_OFFSET(cr3_target_value3, 400);
+	CHECK_OFFSET(exit_qualification, 408);
+	CHECK_OFFSET(guest_linear_address, 416);
+	CHECK_OFFSET(guest_cr0, 424);
+	CHECK_OFFSET(guest_cr3, 432);
+	CHECK_OFFSET(guest_cr4, 440);
+	CHECK_OFFSET(guest_es_base, 448);
+	CHECK_OFFSET(guest_cs_base, 456);
+	CHECK_OFFSET(guest_ss_base, 464);
+	CHECK_OFFSET(guest_ds_base, 472);
+	CHECK_OFFSET(guest_fs_base, 480);
+	CHECK_OFFSET(guest_gs_base, 488);
+	CHECK_OFFSET(guest_ldtr_base, 496);
+	CHECK_OFFSET(guest_tr_base, 504);
+	CHECK_OFFSET(guest_gdtr_base, 512);
+	CHECK_OFFSET(guest_idtr_base, 520);
+	CHECK_OFFSET(guest_dr7, 528);
+	CHECK_OFFSET(guest_rsp, 536);
+	CHECK_OFFSET(guest_rip, 544);
+	CHECK_OFFSET(guest_rflags, 552);
+	CHECK_OFFSET(guest_pending_dbg_exceptions, 560);
+	CHECK_OFFSET(guest_sysenter_esp, 568);
+	CHECK_OFFSET(guest_sysenter_eip, 576);
+	CHECK_OFFSET(host_cr0, 584);
+	CHECK_OFFSET(host_cr3, 592);
+	CHECK_OFFSET(host_cr4, 600);
+	CHECK_OFFSET(host_fs_base, 608);
+	CHECK_OFFSET(host_gs_base, 616);
+	CHECK_OFFSET(host_tr_base, 624);
+	CHECK_OFFSET(host_gdtr_base, 632);
+	CHECK_OFFSET(host_idtr_base, 640);
+	CHECK_OFFSET(host_ia32_sysenter_esp, 648);
+	CHECK_OFFSET(host_ia32_sysenter_eip, 656);
+	CHECK_OFFSET(host_rsp, 664);
+	CHECK_OFFSET(host_rip, 672);
+	CHECK_OFFSET(pin_based_vm_exec_control, 744);
+	CHECK_OFFSET(cpu_based_vm_exec_control, 748);
+	CHECK_OFFSET(exception_bitmap, 752);
+	CHECK_OFFSET(page_fault_error_code_mask, 756);
+	CHECK_OFFSET(page_fault_error_code_match, 760);
+	CHECK_OFFSET(cr3_target_count, 764);
+	CHECK_OFFSET(vm_exit_controls, 768);
+	CHECK_OFFSET(vm_exit_msr_store_count, 772);
+	CHECK_OFFSET(vm_exit_msr_load_count, 776);
+	CHECK_OFFSET(vm_entry_controls, 780);
+	CHECK_OFFSET(vm_entry_msr_load_count, 784);
+	CHECK_OFFSET(vm_entry_intr_info_field, 788);
+	CHECK_OFFSET(vm_entry_exception_error_code, 792);
+	CHECK_OFFSET(vm_entry_instruction_len, 796);
+	CHECK_OFFSET(tpr_threshold, 800);
+	CHECK_OFFSET(secondary_vm_exec_control, 804);
+	CHECK_OFFSET(vm_instruction_error, 808);
+	CHECK_OFFSET(vm_exit_reason, 812);
+	CHECK_OFFSET(vm_exit_intr_info, 816);
+	CHECK_OFFSET(vm_exit_intr_error_code, 820);
+	CHECK_OFFSET(idt_vectoring_info_field, 824);
+	CHECK_OFFSET(idt_vectoring_error_code, 828);
+	CHECK_OFFSET(vm_exit_instruction_len, 832);
+	CHECK_OFFSET(vmx_instruction_info, 836);
+	CHECK_OFFSET(guest_es_limit, 840);
+	CHECK_OFFSET(guest_cs_limit, 844);
+	CHECK_OFFSET(guest_ss_limit, 848);
+	CHECK_OFFSET(guest_ds_limit, 852);
+	CHECK_OFFSET(guest_fs_limit, 856);
+	CHECK_OFFSET(guest_gs_limit, 860);
+	CHECK_OFFSET(guest_ldtr_limit, 864);
+	CHECK_OFFSET(guest_tr_limit, 868);
+	CHECK_OFFSET(guest_gdtr_limit, 872);
+	CHECK_OFFSET(guest_idtr_limit, 876);
+	CHECK_OFFSET(guest_es_ar_bytes, 880);
+	CHECK_OFFSET(guest_cs_ar_bytes, 884);
+	CHECK_OFFSET(guest_ss_ar_bytes, 888);
+	CHECK_OFFSET(guest_ds_ar_bytes, 892);
+	CHECK_OFFSET(guest_fs_ar_bytes, 896);
+	CHECK_OFFSET(guest_gs_ar_bytes, 900);
+	CHECK_OFFSET(guest_ldtr_ar_bytes, 904);
+	CHECK_OFFSET(guest_tr_ar_bytes, 908);
+	CHECK_OFFSET(guest_interruptibility_info, 912);
+	CHECK_OFFSET(guest_activity_state, 916);
+	CHECK_OFFSET(guest_sysenter_cs, 920);
+	CHECK_OFFSET(host_ia32_sysenter_cs, 924);
+	CHECK_OFFSET(vmx_preemption_timer_value, 928);
+	CHECK_OFFSET(virtual_processor_id, 960);
+	CHECK_OFFSET(posted_intr_nv, 962);
+	CHECK_OFFSET(guest_es_selector, 964);
+	CHECK_OFFSET(guest_cs_selector, 966);
+	CHECK_OFFSET(guest_ss_selector, 968);
+	CHECK_OFFSET(guest_ds_selector, 970);
+	CHECK_OFFSET(guest_fs_selector, 972);
+	CHECK_OFFSET(guest_gs_selector, 974);
+	CHECK_OFFSET(guest_ldtr_selector, 976);
+	CHECK_OFFSET(guest_tr_selector, 978);
+	CHECK_OFFSET(guest_intr_status, 980);
+	CHECK_OFFSET(host_es_selector, 982);
+	CHECK_OFFSET(host_cs_selector, 984);
+	CHECK_OFFSET(host_ss_selector, 986);
+	CHECK_OFFSET(host_ds_selector, 988);
+	CHECK_OFFSET(host_fs_selector, 990);
+	CHECK_OFFSET(host_gs_selector, 992);
+	CHECK_OFFSET(host_tr_selector, 994);
+	CHECK_OFFSET(guest_pml_index, 996);
+}
+
+extern const unsigned short vmcs_field_to_offset_table[];
+extern const unsigned int nr_vmcs12_fields;
+
+#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
+
+static inline short vmcs_field_to_offset(unsigned long field)
+{
+	unsigned short offset;
+	unsigned int index;
+
+	if (field >> 15)
+		return -ENOENT;
+
+	index = ROL16(field, 6);
+	if (index >= nr_vmcs12_fields)
+		return -ENOENT;
+
+	index = array_index_nospec(index, nr_vmcs12_fields);
+	offset = vmcs_field_to_offset_table[index];
+	if (offset == 0)
+		return -ENOENT;
+	return offset;
+}
+
+#undef ROL16
+
+/*
+ * Read a vmcs12 field. Since these can have varying lengths and we return
+ * one type, we chose the biggest type (u64) and zero-extend the return value
+ * to that size. Note that the caller, handle_vmread, might need to use only
+ * some of the bits we return here (e.g., on 32-bit guests, only 32 bits of
+ * 64-bit fields are to be returned).
+ */
+static inline int vmcs12_read_any(struct vmcs12 *vmcs12,
+				  unsigned long field, u64 *ret)
+{
+	short offset = vmcs_field_to_offset(field);
+	char *p;
+
+	if (offset < 0)
+		return offset;
+
+	p = (char *)vmcs12 + offset;
+
+	switch (vmcs_field_width(field)) {
+	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
+		*ret = *((natural_width *)p);
+		return 0;
+	case VMCS_FIELD_WIDTH_U16:
+		*ret = *((u16 *)p);
+		return 0;
+	case VMCS_FIELD_WIDTH_U32:
+		*ret = *((u32 *)p);
+		return 0;
+	case VMCS_FIELD_WIDTH_U64:
+		*ret = *((u64 *)p);
+		return 0;
+	default:
+		WARN_ON(1);
+		return -ENOENT;
+	}
+}
+
+static inline int vmcs12_write_any(struct vmcs12 *vmcs12,
+				   unsigned long field, u64 field_value){
+	short offset = vmcs_field_to_offset(field);
+	char *p = (char *)vmcs12 + offset;
+
+	if (offset < 0)
+		return offset;
+
+	switch (vmcs_field_width(field)) {
+	case VMCS_FIELD_WIDTH_U16:
+		*(u16 *)p = field_value;
+		return 0;
+	case VMCS_FIELD_WIDTH_U32:
+		*(u32 *)p = field_value;
+		return 0;
+	case VMCS_FIELD_WIDTH_U64:
+		*(u64 *)p = field_value;
+		return 0;
+	case VMCS_FIELD_WIDTH_NATURAL_WIDTH:
+		*(natural_width *)p = field_value;
+		return 0;
+	default:
+		WARN_ON(1);
+		return -ENOENT;
+	}
+
+}
+
+#endif /* __KVM_X86_VMX_VMCS12_H */
diff --git a/arch/x86/kvm/vmx_shadow_fields.h b/arch/x86/kvm/vmx/vmcs_shadow_fields.h
index 132432f375c2..132432f375c2 100644
--- a/arch/x86/kvm/vmx_shadow_fields.h
+++ b/arch/x86/kvm/vmx/vmcs_shadow_fields.h
diff --git a/arch/x86/kvm/vmx/vmenter.S b/arch/x86/kvm/vmx/vmenter.S
new file mode 100644
index 000000000000..bcef2c7e9bc4
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmenter.S
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/asm.h>
+
+	.text
+
+/**
+ * vmx_vmenter - VM-Enter the current loaded VMCS
+ *
+ * %RFLAGS.ZF:	!VMCS.LAUNCHED, i.e. controls VMLAUNCH vs. VMRESUME
+ *
+ * Returns:
+ *	%RFLAGS.CF is set on VM-Fail Invalid
+ *	%RFLAGS.ZF is set on VM-Fail Valid
+ *	%RFLAGS.{CF,ZF} are cleared on VM-Success, i.e. VM-Exit
+ *
+ * Note that VMRESUME/VMLAUNCH fall-through and return directly if
+ * they VM-Fail, whereas a successful VM-Enter + VM-Exit will jump
+ * to vmx_vmexit.
+ */
+ENTRY(vmx_vmenter)
+	/* EFLAGS.ZF is set if VMCS.LAUNCHED == 0 */
+	je 2f
+
+1:	vmresume
+	ret
+
+2:	vmlaunch
+	ret
+
+3:	cmpb $0, kvm_rebooting
+	jne 4f
+	call kvm_spurious_fault
+4:	ret
+
+	.pushsection .fixup, "ax"
+5:	jmp 3b
+	.popsection
+
+	_ASM_EXTABLE(1b, 5b)
+	_ASM_EXTABLE(2b, 5b)
+
+ENDPROC(vmx_vmenter)
+
+/**
+ * vmx_vmexit - Handle a VMX VM-Exit
+ *
+ * Returns:
+ *	%RFLAGS.{CF,ZF} are cleared on VM-Success, i.e. VM-Exit
+ *
+ * This is vmx_vmenter's partner in crime.  On a VM-Exit, control will jump
+ * here after hardware loads the host's state, i.e. this is the destination
+ * referred to by VMCS.HOST_RIP.
+ */
+ENTRY(vmx_vmexit)
+	ret
+ENDPROC(vmx_vmexit)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
new file mode 100644
index 000000000000..41d6f7081ff7
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -0,0 +1,7935 @@
+/*
+ * Kernel-based Virtual Machine driver for Linux
+ *
+ * This module enables machines with Intel VT-x extensions to run virtual
+ * machines without emulation or binary translation.
+ *
+ * Copyright (C) 2006 Qumranet, Inc.
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
+ *
+ * Authors:
+ *   Avi Kivity   <avi@qumranet.com>
+ *   Yaniv Kamay  <yaniv@qumranet.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include <linux/frame.h>
+#include <linux/highmem.h>
+#include <linux/hrtimer.h>
+#include <linux/kernel.h>
+#include <linux/kvm_host.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/tboot.h>
+#include <linux/trace_events.h>
+
+#include <asm/apic.h>
+#include <asm/asm.h>
+#include <asm/cpu.h>
+#include <asm/debugreg.h>
+#include <asm/desc.h>
+#include <asm/fpu/internal.h>
+#include <asm/io.h>
+#include <asm/irq_remapping.h>
+#include <asm/kexec.h>
+#include <asm/perf_event.h>
+#include <asm/mce.h>
+#include <asm/mmu_context.h>
+#include <asm/mshyperv.h>
+#include <asm/spec-ctrl.h>
+#include <asm/virtext.h>
+#include <asm/vmx.h>
+
+#include "capabilities.h"
+#include "cpuid.h"
+#include "evmcs.h"
+#include "irq.h"
+#include "kvm_cache_regs.h"
+#include "lapic.h"
+#include "mmu.h"
+#include "nested.h"
+#include "ops.h"
+#include "pmu.h"
+#include "trace.h"
+#include "vmcs.h"
+#include "vmcs12.h"
+#include "vmx.h"
+#include "x86.h"
+
+MODULE_AUTHOR("Qumranet");
+MODULE_LICENSE("GPL");
+
+static const struct x86_cpu_id vmx_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_VMX),
+	{}
+};
+MODULE_DEVICE_TABLE(x86cpu, vmx_cpu_id);
+
+bool __read_mostly enable_vpid = 1;
+module_param_named(vpid, enable_vpid, bool, 0444);
+
+static bool __read_mostly enable_vnmi = 1;
+module_param_named(vnmi, enable_vnmi, bool, S_IRUGO);
+
+bool __read_mostly flexpriority_enabled = 1;
+module_param_named(flexpriority, flexpriority_enabled, bool, S_IRUGO);
+
+bool __read_mostly enable_ept = 1;
+module_param_named(ept, enable_ept, bool, S_IRUGO);
+
+bool __read_mostly enable_unrestricted_guest = 1;
+module_param_named(unrestricted_guest,
+			enable_unrestricted_guest, bool, S_IRUGO);
+
+bool __read_mostly enable_ept_ad_bits = 1;
+module_param_named(eptad, enable_ept_ad_bits, bool, S_IRUGO);
+
+static bool __read_mostly emulate_invalid_guest_state = true;
+module_param(emulate_invalid_guest_state, bool, S_IRUGO);
+
+static bool __read_mostly fasteoi = 1;
+module_param(fasteoi, bool, S_IRUGO);
+
+static bool __read_mostly enable_apicv = 1;
+module_param(enable_apicv, bool, S_IRUGO);
+
+/*
+ * If nested=1, nested virtualization is supported, i.e., guests may use
+ * VMX and be a hypervisor for its own guests. If nested=0, guests may not
+ * use VMX instructions.
+ */
+static bool __read_mostly nested = 1;
+module_param(nested, bool, S_IRUGO);
+
+static u64 __read_mostly host_xss;
+
+bool __read_mostly enable_pml = 1;
+module_param_named(pml, enable_pml, bool, S_IRUGO);
+
+#define MSR_BITMAP_MODE_X2APIC		1
+#define MSR_BITMAP_MODE_X2APIC_APICV	2
+
+#define KVM_VMX_TSC_MULTIPLIER_MAX     0xffffffffffffffffULL
+
+/* Guest_tsc -> host_tsc conversion requires 64-bit division.  */
+static int __read_mostly cpu_preemption_timer_multi;
+static bool __read_mostly enable_preemption_timer = 1;
+#ifdef CONFIG_X86_64
+module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
+#endif
+
+#define KVM_VM_CR0_ALWAYS_OFF (X86_CR0_NW | X86_CR0_CD)
+#define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR0_NE
+#define KVM_VM_CR0_ALWAYS_ON				\
+	(KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | 	\
+	 X86_CR0_WP | X86_CR0_PG | X86_CR0_PE)
+#define KVM_CR4_GUEST_OWNED_BITS				      \
+	(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR      \
+	 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_TSD)
+
+#define KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR4_VMXE
+#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
+#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
+
+#define RMODE_GUEST_OWNED_EFLAGS_BITS (~(X86_EFLAGS_IOPL | X86_EFLAGS_VM))
+
+#define MSR_IA32_RTIT_STATUS_MASK (~(RTIT_STATUS_FILTEREN | \
+	RTIT_STATUS_CONTEXTEN | RTIT_STATUS_TRIGGEREN | \
+	RTIT_STATUS_ERROR | RTIT_STATUS_STOPPED | \
+	RTIT_STATUS_BYTECNT))
+
+#define MSR_IA32_RTIT_OUTPUT_BASE_MASK \
+	(~((1UL << cpuid_query_maxphyaddr(vcpu)) - 1) | 0x7f)
+
+/*
+ * These 2 parameters are used to config the controls for Pause-Loop Exiting:
+ * ple_gap:    upper bound on the amount of time between two successive
+ *             executions of PAUSE in a loop. Also indicate if ple enabled.
+ *             According to test, this time is usually smaller than 128 cycles.
+ * ple_window: upper bound on the amount of time a guest is allowed to execute
+ *             in a PAUSE loop. Tests indicate that most spinlocks are held for
+ *             less than 2^12 cycles
+ * Time is measured based on a counter that runs at the same rate as the TSC,
+ * refer SDM volume 3b section 21.6.13 & 22.1.3.
+ */
+static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
+module_param(ple_gap, uint, 0444);
+
+static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
+module_param(ple_window, uint, 0444);
+
+/* Default doubles per-vcpu window every exit. */
+static unsigned int ple_window_grow = KVM_DEFAULT_PLE_WINDOW_GROW;
+module_param(ple_window_grow, uint, 0444);
+
+/* Default resets per-vcpu window every exit to ple_window. */
+static unsigned int ple_window_shrink = KVM_DEFAULT_PLE_WINDOW_SHRINK;
+module_param(ple_window_shrink, uint, 0444);
+
+/* Default is to compute the maximum so we can never overflow. */
+static unsigned int ple_window_max        = KVM_VMX_DEFAULT_PLE_WINDOW_MAX;
+module_param(ple_window_max, uint, 0444);
+
+/* Default is SYSTEM mode, 1 for host-guest mode */
+int __read_mostly pt_mode = PT_MODE_SYSTEM;
+module_param(pt_mode, int, S_IRUGO);
+
+static DEFINE_STATIC_KEY_FALSE(vmx_l1d_should_flush);
+static DEFINE_STATIC_KEY_FALSE(vmx_l1d_flush_cond);
+static DEFINE_MUTEX(vmx_l1d_flush_mutex);
+
+/* Storage for pre module init parameter parsing */
+static enum vmx_l1d_flush_state __read_mostly vmentry_l1d_flush_param = VMENTER_L1D_FLUSH_AUTO;
+
+static const struct {
+	const char *option;
+	bool for_parse;
+} vmentry_l1d_param[] = {
+	[VMENTER_L1D_FLUSH_AUTO]	 = {"auto", true},
+	[VMENTER_L1D_FLUSH_NEVER]	 = {"never", true},
+	[VMENTER_L1D_FLUSH_COND]	 = {"cond", true},
+	[VMENTER_L1D_FLUSH_ALWAYS]	 = {"always", true},
+	[VMENTER_L1D_FLUSH_EPT_DISABLED] = {"EPT disabled", false},
+	[VMENTER_L1D_FLUSH_NOT_REQUIRED] = {"not required", false},
+};
+
+#define L1D_CACHE_ORDER 4
+static void *vmx_l1d_flush_pages;
+
+static int vmx_setup_l1d_flush(enum vmx_l1d_flush_state l1tf)
+{
+	struct page *page;
+	unsigned int i;
+
+	if (!enable_ept) {
+		l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_EPT_DISABLED;
+		return 0;
+	}
+
+	if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES)) {
+		u64 msr;
+
+		rdmsrl(MSR_IA32_ARCH_CAPABILITIES, msr);
+		if (msr & ARCH_CAP_SKIP_VMENTRY_L1DFLUSH) {
+			l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_NOT_REQUIRED;
+			return 0;
+		}
+	}
+
+	/* If set to auto use the default l1tf mitigation method */
+	if (l1tf == VMENTER_L1D_FLUSH_AUTO) {
+		switch (l1tf_mitigation) {
+		case L1TF_MITIGATION_OFF:
+			l1tf = VMENTER_L1D_FLUSH_NEVER;
+			break;
+		case L1TF_MITIGATION_FLUSH_NOWARN:
+		case L1TF_MITIGATION_FLUSH:
+		case L1TF_MITIGATION_FLUSH_NOSMT:
+			l1tf = VMENTER_L1D_FLUSH_COND;
+			break;
+		case L1TF_MITIGATION_FULL:
+		case L1TF_MITIGATION_FULL_FORCE:
+			l1tf = VMENTER_L1D_FLUSH_ALWAYS;
+			break;
+		}
+	} else if (l1tf_mitigation == L1TF_MITIGATION_FULL_FORCE) {
+		l1tf = VMENTER_L1D_FLUSH_ALWAYS;
+	}
+
+	if (l1tf != VMENTER_L1D_FLUSH_NEVER && !vmx_l1d_flush_pages &&
+	    !boot_cpu_has(X86_FEATURE_FLUSH_L1D)) {
+		page = alloc_pages(GFP_KERNEL, L1D_CACHE_ORDER);
+		if (!page)
+			return -ENOMEM;
+		vmx_l1d_flush_pages = page_address(page);
+
+		/*
+		 * Initialize each page with a different pattern in
+		 * order to protect against KSM in the nested
+		 * virtualization case.
+		 */
+		for (i = 0; i < 1u << L1D_CACHE_ORDER; ++i) {
+			memset(vmx_l1d_flush_pages + i * PAGE_SIZE, i + 1,
+			       PAGE_SIZE);
+		}
+	}
+
+	l1tf_vmx_mitigation = l1tf;
+
+	if (l1tf != VMENTER_L1D_FLUSH_NEVER)
+		static_branch_enable(&vmx_l1d_should_flush);
+	else
+		static_branch_disable(&vmx_l1d_should_flush);
+
+	if (l1tf == VMENTER_L1D_FLUSH_COND)
+		static_branch_enable(&vmx_l1d_flush_cond);
+	else
+		static_branch_disable(&vmx_l1d_flush_cond);
+	return 0;
+}
+
+static int vmentry_l1d_flush_parse(const char *s)
+{
+	unsigned int i;
+
+	if (s) {
+		for (i = 0; i < ARRAY_SIZE(vmentry_l1d_param); i++) {
+			if (vmentry_l1d_param[i].for_parse &&
+			    sysfs_streq(s, vmentry_l1d_param[i].option))
+				return i;
+		}
+	}
+	return -EINVAL;
+}
+
+static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp)
+{
+	int l1tf, ret;
+
+	l1tf = vmentry_l1d_flush_parse(s);
+	if (l1tf < 0)
+		return l1tf;
+
+	if (!boot_cpu_has(X86_BUG_L1TF))
+		return 0;
+
+	/*
+	 * Has vmx_init() run already? If not then this is the pre init
+	 * parameter parsing. In that case just store the value and let
+	 * vmx_init() do the proper setup after enable_ept has been
+	 * established.
+	 */
+	if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_AUTO) {
+		vmentry_l1d_flush_param = l1tf;
+		return 0;
+	}
+
+	mutex_lock(&vmx_l1d_flush_mutex);
+	ret = vmx_setup_l1d_flush(l1tf);
+	mutex_unlock(&vmx_l1d_flush_mutex);
+	return ret;
+}
+
+static int vmentry_l1d_flush_get(char *s, const struct kernel_param *kp)
+{
+	if (WARN_ON_ONCE(l1tf_vmx_mitigation >= ARRAY_SIZE(vmentry_l1d_param)))
+		return sprintf(s, "???\n");
+
+	return sprintf(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option);
+}
+
+static const struct kernel_param_ops vmentry_l1d_flush_ops = {
+	.set = vmentry_l1d_flush_set,
+	.get = vmentry_l1d_flush_get,
+};
+module_param_cb(vmentry_l1d_flush, &vmentry_l1d_flush_ops, NULL, 0644);
+
+static bool guest_state_valid(struct kvm_vcpu *vcpu);
+static u32 vmx_segment_access_rights(struct kvm_segment *var);
+static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
+							  u32 msr, int type);
+
+void vmx_vmexit(void);
+
+static DEFINE_PER_CPU(struct vmcs *, vmxarea);
+DEFINE_PER_CPU(struct vmcs *, current_vmcs);
+/*
+ * We maintain a per-CPU linked-list of VMCS loaded on that CPU. This is needed
+ * when a CPU is brought down, and we need to VMCLEAR all VMCSs loaded on it.
+ */
+static DEFINE_PER_CPU(struct list_head, loaded_vmcss_on_cpu);
+
+/*
+ * We maintian a per-CPU linked-list of vCPU, so in wakeup_handler() we
+ * can find which vCPU should be waken up.
+ */
+static DEFINE_PER_CPU(struct list_head, blocked_vcpu_on_cpu);
+static DEFINE_PER_CPU(spinlock_t, blocked_vcpu_on_cpu_lock);
+
+static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS);
+static DEFINE_SPINLOCK(vmx_vpid_lock);
+
+struct vmcs_config vmcs_config;
+struct vmx_capability vmx_capability;
+
+#define VMX_SEGMENT_FIELD(seg)					\
+	[VCPU_SREG_##seg] = {                                   \
+		.selector = GUEST_##seg##_SELECTOR,		\
+		.base = GUEST_##seg##_BASE,		   	\
+		.limit = GUEST_##seg##_LIMIT,		   	\
+		.ar_bytes = GUEST_##seg##_AR_BYTES,	   	\
+	}
+
+static const struct kvm_vmx_segment_field {
+	unsigned selector;
+	unsigned base;
+	unsigned limit;
+	unsigned ar_bytes;
+} kvm_vmx_segment_fields[] = {
+	VMX_SEGMENT_FIELD(CS),
+	VMX_SEGMENT_FIELD(DS),
+	VMX_SEGMENT_FIELD(ES),
+	VMX_SEGMENT_FIELD(FS),
+	VMX_SEGMENT_FIELD(GS),
+	VMX_SEGMENT_FIELD(SS),
+	VMX_SEGMENT_FIELD(TR),
+	VMX_SEGMENT_FIELD(LDTR),
+};
+
+u64 host_efer;
+
+/*
+ * Though SYSCALL is only supported in 64-bit mode on Intel CPUs, kvm
+ * will emulate SYSCALL in legacy mode if the vendor string in guest
+ * CPUID.0:{EBX,ECX,EDX} is "AuthenticAMD" or "AMDisbetter!" To
+ * support this emulation, IA32_STAR must always be included in
+ * vmx_msr_index[], even in i386 builds.
+ */
+const u32 vmx_msr_index[] = {
+#ifdef CONFIG_X86_64
+	MSR_SYSCALL_MASK, MSR_LSTAR, MSR_CSTAR,
+#endif
+	MSR_EFER, MSR_TSC_AUX, MSR_STAR,
+};
+
+#if IS_ENABLED(CONFIG_HYPERV)
+static bool __read_mostly enlightened_vmcs = true;
+module_param(enlightened_vmcs, bool, 0444);
+
+/* check_ept_pointer() should be under protection of ept_pointer_lock. */
+static void check_ept_pointer_match(struct kvm *kvm)
+{
+	struct kvm_vcpu *vcpu;
+	u64 tmp_eptp = INVALID_PAGE;
+	int i;
+
+	kvm_for_each_vcpu(i, vcpu, kvm) {
+		if (!VALID_PAGE(tmp_eptp)) {
+			tmp_eptp = to_vmx(vcpu)->ept_pointer;
+		} else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
+			to_kvm_vmx(kvm)->ept_pointers_match
+				= EPT_POINTERS_MISMATCH;
+			return;
+		}
+	}
+
+	to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
+}
+
+int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush,
+		void *data)
+{
+	struct kvm_tlb_range *range = data;
+
+	return hyperv_fill_flush_guest_mapping_list(flush, range->start_gfn,
+			range->pages);
+}
+
+static inline int __hv_remote_flush_tlb_with_range(struct kvm *kvm,
+		struct kvm_vcpu *vcpu, struct kvm_tlb_range *range)
+{
+	u64 ept_pointer = to_vmx(vcpu)->ept_pointer;
+
+	/*
+	 * FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE hypercall needs address
+	 * of the base of EPT PML4 table, strip off EPT configuration
+	 * information.
+	 */
+	if (range)
+		return hyperv_flush_guest_mapping_range(ept_pointer & PAGE_MASK,
+				kvm_fill_hv_flush_list_func, (void *)range);
+	else
+		return hyperv_flush_guest_mapping(ept_pointer & PAGE_MASK);
+}
+
+static int hv_remote_flush_tlb_with_range(struct kvm *kvm,
+		struct kvm_tlb_range *range)
+{
+	struct kvm_vcpu *vcpu;
+	int ret = -ENOTSUPP, i;
+
+	spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+
+	if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
+		check_ept_pointer_match(kvm);
+
+	if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
+		kvm_for_each_vcpu(i, vcpu, kvm) {
+			/* If ept_pointer is invalid pointer, bypass flush request. */
+			if (VALID_PAGE(to_vmx(vcpu)->ept_pointer))
+				ret |= __hv_remote_flush_tlb_with_range(
+					kvm, vcpu, range);
+		}
+	} else {
+		ret = __hv_remote_flush_tlb_with_range(kvm,
+				kvm_get_vcpu(kvm, 0), range);
+	}
+
+	spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+	return ret;
+}
+static int hv_remote_flush_tlb(struct kvm *kvm)
+{
+	return hv_remote_flush_tlb_with_range(kvm, NULL);
+}
+
+#endif /* IS_ENABLED(CONFIG_HYPERV) */
+
+/*
+ * Comment's format: document - errata name - stepping - processor name.
+ * Refer from
+ * https://www.virtualbox.org/svn/vbox/trunk/src/VBox/VMM/VMMR0/HMR0.cpp
+ */
+static u32 vmx_preemption_cpu_tfms[] = {
+/* 323344.pdf - BA86   - D0 - Xeon 7500 Series */
+0x000206E6,
+/* 323056.pdf - AAX65  - C2 - Xeon L3406 */
+/* 322814.pdf - AAT59  - C2 - i7-600, i5-500, i5-400 and i3-300 Mobile */
+/* 322911.pdf - AAU65  - C2 - i5-600, i3-500 Desktop and Pentium G6950 */
+0x00020652,
+/* 322911.pdf - AAU65  - K0 - i5-600, i3-500 Desktop and Pentium G6950 */
+0x00020655,
+/* 322373.pdf - AAO95  - B1 - Xeon 3400 Series */
+/* 322166.pdf - AAN92  - B1 - i7-800 and i5-700 Desktop */
+/*
+ * 320767.pdf - AAP86  - B1 -
+ * i7-900 Mobile Extreme, i7-800 and i7-700 Mobile
+ */
+0x000106E5,
+/* 321333.pdf - AAM126 - C0 - Xeon 3500 */
+0x000106A0,
+/* 321333.pdf - AAM126 - C1 - Xeon 3500 */
+0x000106A1,
+/* 320836.pdf - AAJ124 - C0 - i7-900 Desktop Extreme and i7-900 Desktop */
+0x000106A4,
+ /* 321333.pdf - AAM126 - D0 - Xeon 3500 */
+ /* 321324.pdf - AAK139 - D0 - Xeon 5500 */
+ /* 320836.pdf - AAJ124 - D0 - i7-900 Extreme and i7-900 Desktop */
+0x000106A5,
+ /* Xeon E3-1220 V2 */
+0x000306A8,
+};
+
+static inline bool cpu_has_broken_vmx_preemption_timer(void)
+{
+	u32 eax = cpuid_eax(0x00000001), i;
+
+	/* Clear the reserved bits */
+	eax &= ~(0x3U << 14 | 0xfU << 28);
+	for (i = 0; i < ARRAY_SIZE(vmx_preemption_cpu_tfms); i++)
+		if (eax == vmx_preemption_cpu_tfms[i])
+			return true;
+
+	return false;
+}
+
+static inline bool cpu_need_virtualize_apic_accesses(struct kvm_vcpu *vcpu)
+{
+	return flexpriority_enabled && lapic_in_kernel(vcpu);
+}
+
+static inline bool report_flexpriority(void)
+{
+	return flexpriority_enabled;
+}
+
+static inline int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
+{
+	int i;
+
+	for (i = 0; i < vmx->nmsrs; ++i)
+		if (vmx_msr_index[vmx->guest_msrs[i].index] == msr)
+			return i;
+	return -1;
+}
+
+struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
+{
+	int i;
+
+	i = __find_msr_index(vmx, msr);
+	if (i >= 0)
+		return &vmx->guest_msrs[i];
+	return NULL;
+}
+
+void loaded_vmcs_init(struct loaded_vmcs *loaded_vmcs)
+{
+	vmcs_clear(loaded_vmcs->vmcs);
+	if (loaded_vmcs->shadow_vmcs && loaded_vmcs->launched)
+		vmcs_clear(loaded_vmcs->shadow_vmcs);
+	loaded_vmcs->cpu = -1;
+	loaded_vmcs->launched = 0;
+}
+
+#ifdef CONFIG_KEXEC_CORE
+/*
+ * This bitmap is used to indicate whether the vmclear
+ * operation is enabled on all cpus. All disabled by
+ * default.
+ */
+static cpumask_t crash_vmclear_enabled_bitmap = CPU_MASK_NONE;
+
+static inline void crash_enable_local_vmclear(int cpu)
+{
+	cpumask_set_cpu(cpu, &crash_vmclear_enabled_bitmap);
+}
+
+static inline void crash_disable_local_vmclear(int cpu)
+{
+	cpumask_clear_cpu(cpu, &crash_vmclear_enabled_bitmap);
+}
+
+static inline int crash_local_vmclear_enabled(int cpu)
+{
+	return cpumask_test_cpu(cpu, &crash_vmclear_enabled_bitmap);
+}
+
+static void crash_vmclear_local_loaded_vmcss(void)
+{
+	int cpu = raw_smp_processor_id();
+	struct loaded_vmcs *v;
+
+	if (!crash_local_vmclear_enabled(cpu))
+		return;
+
+	list_for_each_entry(v, &per_cpu(loaded_vmcss_on_cpu, cpu),
+			    loaded_vmcss_on_cpu_link)
+		vmcs_clear(v->vmcs);
+}
+#else
+static inline void crash_enable_local_vmclear(int cpu) { }
+static inline void crash_disable_local_vmclear(int cpu) { }
+#endif /* CONFIG_KEXEC_CORE */
+
+static void __loaded_vmcs_clear(void *arg)
+{
+	struct loaded_vmcs *loaded_vmcs = arg;
+	int cpu = raw_smp_processor_id();
+
+	if (loaded_vmcs->cpu != cpu)
+		return; /* vcpu migration can race with cpu offline */
+	if (per_cpu(current_vmcs, cpu) == loaded_vmcs->vmcs)
+		per_cpu(current_vmcs, cpu) = NULL;
+	crash_disable_local_vmclear(cpu);
+	list_del(&loaded_vmcs->loaded_vmcss_on_cpu_link);
+
+	/*
+	 * we should ensure updating loaded_vmcs->loaded_vmcss_on_cpu_link
+	 * is before setting loaded_vmcs->vcpu to -1 which is done in
+	 * loaded_vmcs_init. Otherwise, other cpu can see vcpu = -1 fist
+	 * then adds the vmcs into percpu list before it is deleted.
+	 */
+	smp_wmb();
+
+	loaded_vmcs_init(loaded_vmcs);
+	crash_enable_local_vmclear(cpu);
+}
+
+void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs)
+{
+	int cpu = loaded_vmcs->cpu;
+
+	if (cpu != -1)
+		smp_call_function_single(cpu,
+			 __loaded_vmcs_clear, loaded_vmcs, 1);
+}
+
+static bool vmx_segment_cache_test_set(struct vcpu_vmx *vmx, unsigned seg,
+				       unsigned field)
+{
+	bool ret;
+	u32 mask = 1 << (seg * SEG_FIELD_NR + field);
+
+	if (!(vmx->vcpu.arch.regs_avail & (1 << VCPU_EXREG_SEGMENTS))) {
+		vmx->vcpu.arch.regs_avail |= (1 << VCPU_EXREG_SEGMENTS);
+		vmx->segment_cache.bitmask = 0;
+	}
+	ret = vmx->segment_cache.bitmask & mask;
+	vmx->segment_cache.bitmask |= mask;
+	return ret;
+}
+
+static u16 vmx_read_guest_seg_selector(struct vcpu_vmx *vmx, unsigned seg)
+{
+	u16 *p = &vmx->segment_cache.seg[seg].selector;
+
+	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_SEL))
+		*p = vmcs_read16(kvm_vmx_segment_fields[seg].selector);
+	return *p;
+}
+
+static ulong vmx_read_guest_seg_base(struct vcpu_vmx *vmx, unsigned seg)
+{
+	ulong *p = &vmx->segment_cache.seg[seg].base;
+
+	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_BASE))
+		*p = vmcs_readl(kvm_vmx_segment_fields[seg].base);
+	return *p;
+}
+
+static u32 vmx_read_guest_seg_limit(struct vcpu_vmx *vmx, unsigned seg)
+{
+	u32 *p = &vmx->segment_cache.seg[seg].limit;
+
+	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_LIMIT))
+		*p = vmcs_read32(kvm_vmx_segment_fields[seg].limit);
+	return *p;
+}
+
+static u32 vmx_read_guest_seg_ar(struct vcpu_vmx *vmx, unsigned seg)
+{
+	u32 *p = &vmx->segment_cache.seg[seg].ar;
+
+	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_AR))
+		*p = vmcs_read32(kvm_vmx_segment_fields[seg].ar_bytes);
+	return *p;
+}
+
+void update_exception_bitmap(struct kvm_vcpu *vcpu)
+{
+	u32 eb;
+
+	eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) |
+	     (1u << DB_VECTOR) | (1u << AC_VECTOR);
+	/*
+	 * Guest access to VMware backdoor ports could legitimately
+	 * trigger #GP because of TSS I/O permission bitmap.
+	 * We intercept those #GP and allow access to them anyway
+	 * as VMware does.
+	 */
+	if (enable_vmware_backdoor)
+		eb |= (1u << GP_VECTOR);
+	if ((vcpu->guest_debug &
+	     (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) ==
+	    (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP))
+		eb |= 1u << BP_VECTOR;
+	if (to_vmx(vcpu)->rmode.vm86_active)
+		eb = ~0;
+	if (enable_ept)
+		eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
+
+	/* When we are running a nested L2 guest and L1 specified for it a
+	 * certain exception bitmap, we must trap the same exceptions and pass
+	 * them to L1. When running L2, we will only handle the exceptions
+	 * specified above if L1 did not want them.
+	 */
+	if (is_guest_mode(vcpu))
+		eb |= get_vmcs12(vcpu)->exception_bitmap;
+
+	vmcs_write32(EXCEPTION_BITMAP, eb);
+}
+
+/*
+ * Check if MSR is intercepted for currently loaded MSR bitmap.
+ */
+static bool msr_write_intercepted(struct kvm_vcpu *vcpu, u32 msr)
+{
+	unsigned long *msr_bitmap;
+	int f = sizeof(unsigned long);
+
+	if (!cpu_has_vmx_msr_bitmap())
+		return true;
+
+	msr_bitmap = to_vmx(vcpu)->loaded_vmcs->msr_bitmap;
+
+	if (msr <= 0x1fff) {
+		return !!test_bit(msr, msr_bitmap + 0x800 / f);
+	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
+		msr &= 0x1fff;
+		return !!test_bit(msr, msr_bitmap + 0xc00 / f);
+	}
+
+	return true;
+}
+
+static void clear_atomic_switch_msr_special(struct vcpu_vmx *vmx,
+		unsigned long entry, unsigned long exit)
+{
+	vm_entry_controls_clearbit(vmx, entry);
+	vm_exit_controls_clearbit(vmx, exit);
+}
+
+static int find_msr(struct vmx_msrs *m, unsigned int msr)
+{
+	unsigned int i;
+
+	for (i = 0; i < m->nr; ++i) {
+		if (m->val[i].index == msr)
+			return i;
+	}
+	return -ENOENT;
+}
+
+static void clear_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr)
+{
+	int i;
+	struct msr_autoload *m = &vmx->msr_autoload;
+
+	switch (msr) {
+	case MSR_EFER:
+		if (cpu_has_load_ia32_efer()) {
+			clear_atomic_switch_msr_special(vmx,
+					VM_ENTRY_LOAD_IA32_EFER,
+					VM_EXIT_LOAD_IA32_EFER);
+			return;
+		}
+		break;
+	case MSR_CORE_PERF_GLOBAL_CTRL:
+		if (cpu_has_load_perf_global_ctrl()) {
+			clear_atomic_switch_msr_special(vmx,
+					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
+					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL);
+			return;
+		}
+		break;
+	}
+	i = find_msr(&m->guest, msr);
+	if (i < 0)
+		goto skip_guest;
+	--m->guest.nr;
+	m->guest.val[i] = m->guest.val[m->guest.nr];
+	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
+
+skip_guest:
+	i = find_msr(&m->host, msr);
+	if (i < 0)
+		return;
+
+	--m->host.nr;
+	m->host.val[i] = m->host.val[m->host.nr];
+	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
+}
+
+static void add_atomic_switch_msr_special(struct vcpu_vmx *vmx,
+		unsigned long entry, unsigned long exit,
+		unsigned long guest_val_vmcs, unsigned long host_val_vmcs,
+		u64 guest_val, u64 host_val)
+{
+	vmcs_write64(guest_val_vmcs, guest_val);
+	if (host_val_vmcs != HOST_IA32_EFER)
+		vmcs_write64(host_val_vmcs, host_val);
+	vm_entry_controls_setbit(vmx, entry);
+	vm_exit_controls_setbit(vmx, exit);
+}
+
+static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
+				  u64 guest_val, u64 host_val, bool entry_only)
+{
+	int i, j = 0;
+	struct msr_autoload *m = &vmx->msr_autoload;
+
+	switch (msr) {
+	case MSR_EFER:
+		if (cpu_has_load_ia32_efer()) {
+			add_atomic_switch_msr_special(vmx,
+					VM_ENTRY_LOAD_IA32_EFER,
+					VM_EXIT_LOAD_IA32_EFER,
+					GUEST_IA32_EFER,
+					HOST_IA32_EFER,
+					guest_val, host_val);
+			return;
+		}
+		break;
+	case MSR_CORE_PERF_GLOBAL_CTRL:
+		if (cpu_has_load_perf_global_ctrl()) {
+			add_atomic_switch_msr_special(vmx,
+					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
+					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL,
+					GUEST_IA32_PERF_GLOBAL_CTRL,
+					HOST_IA32_PERF_GLOBAL_CTRL,
+					guest_val, host_val);
+			return;
+		}
+		break;
+	case MSR_IA32_PEBS_ENABLE:
+		/* PEBS needs a quiescent period after being disabled (to write
+		 * a record).  Disabling PEBS through VMX MSR swapping doesn't
+		 * provide that period, so a CPU could write host's record into
+		 * guest's memory.
+		 */
+		wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
+	}
+
+	i = find_msr(&m->guest, msr);
+	if (!entry_only)
+		j = find_msr(&m->host, msr);
+
+	if (i == NR_AUTOLOAD_MSRS || j == NR_AUTOLOAD_MSRS) {
+		printk_once(KERN_WARNING "Not enough msr switch entries. "
+				"Can't add msr %x\n", msr);
+		return;
+	}
+	if (i < 0) {
+		i = m->guest.nr++;
+		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
+	}
+	m->guest.val[i].index = msr;
+	m->guest.val[i].value = guest_val;
+
+	if (entry_only)
+		return;
+
+	if (j < 0) {
+		j = m->host.nr++;
+		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
+	}
+	m->host.val[j].index = msr;
+	m->host.val[j].value = host_val;
+}
+
+static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
+{
+	u64 guest_efer = vmx->vcpu.arch.efer;
+	u64 ignore_bits = 0;
+
+	if (!enable_ept) {
+		/*
+		 * NX is needed to handle CR0.WP=1, CR4.SMEP=1.  Testing
+		 * host CPUID is more efficient than testing guest CPUID
+		 * or CR4.  Host SMEP is anyway a requirement for guest SMEP.
+		 */
+		if (boot_cpu_has(X86_FEATURE_SMEP))
+			guest_efer |= EFER_NX;
+		else if (!(guest_efer & EFER_NX))
+			ignore_bits |= EFER_NX;
+	}
+
+	/*
+	 * LMA and LME handled by hardware; SCE meaningless outside long mode.
+	 */
+	ignore_bits |= EFER_SCE;
+#ifdef CONFIG_X86_64
+	ignore_bits |= EFER_LMA | EFER_LME;
+	/* SCE is meaningful only in long mode on Intel */
+	if (guest_efer & EFER_LMA)
+		ignore_bits &= ~(u64)EFER_SCE;
+#endif
+
+	/*
+	 * On EPT, we can't emulate NX, so we must switch EFER atomically.
+	 * On CPUs that support "load IA32_EFER", always switch EFER
+	 * atomically, since it's faster than switching it manually.
+	 */
+	if (cpu_has_load_ia32_efer() ||
+	    (enable_ept && ((vmx->vcpu.arch.efer ^ host_efer) & EFER_NX))) {
+		if (!(guest_efer & EFER_LMA))
+			guest_efer &= ~EFER_LME;
+		if (guest_efer != host_efer)
+			add_atomic_switch_msr(vmx, MSR_EFER,
+					      guest_efer, host_efer, false);
+		else
+			clear_atomic_switch_msr(vmx, MSR_EFER);
+		return false;
+	} else {
+		clear_atomic_switch_msr(vmx, MSR_EFER);
+
+		guest_efer &= ~ignore_bits;
+		guest_efer |= host_efer & ignore_bits;
+
+		vmx->guest_msrs[efer_offset].data = guest_efer;
+		vmx->guest_msrs[efer_offset].mask = ~ignore_bits;
+
+		return true;
+	}
+}
+
+#ifdef CONFIG_X86_32
+/*
+ * On 32-bit kernels, VM exits still load the FS and GS bases from the
+ * VMCS rather than the segment table.  KVM uses this helper to figure
+ * out the current bases to poke them into the VMCS before entry.
+ */
+static unsigned long segment_base(u16 selector)
+{
+	struct desc_struct *table;
+	unsigned long v;
+
+	if (!(selector & ~SEGMENT_RPL_MASK))
+		return 0;
+
+	table = get_current_gdt_ro();
+
+	if ((selector & SEGMENT_TI_MASK) == SEGMENT_LDT) {
+		u16 ldt_selector = kvm_read_ldt();
+
+		if (!(ldt_selector & ~SEGMENT_RPL_MASK))
+			return 0;
+
+		table = (struct desc_struct *)segment_base(ldt_selector);
+	}
+	v = get_desc_base(&table[selector >> 3]);
+	return v;
+}
+#endif
+
+static inline void pt_load_msr(struct pt_ctx *ctx, u32 addr_range)
+{
+	u32 i;
+
+	wrmsrl(MSR_IA32_RTIT_STATUS, ctx->status);
+	wrmsrl(MSR_IA32_RTIT_OUTPUT_BASE, ctx->output_base);
+	wrmsrl(MSR_IA32_RTIT_OUTPUT_MASK, ctx->output_mask);
+	wrmsrl(MSR_IA32_RTIT_CR3_MATCH, ctx->cr3_match);
+	for (i = 0; i < addr_range; i++) {
+		wrmsrl(MSR_IA32_RTIT_ADDR0_A + i * 2, ctx->addr_a[i]);
+		wrmsrl(MSR_IA32_RTIT_ADDR0_B + i * 2, ctx->addr_b[i]);
+	}
+}
+
+static inline void pt_save_msr(struct pt_ctx *ctx, u32 addr_range)
+{
+	u32 i;
+
+	rdmsrl(MSR_IA32_RTIT_STATUS, ctx->status);
+	rdmsrl(MSR_IA32_RTIT_OUTPUT_BASE, ctx->output_base);
+	rdmsrl(MSR_IA32_RTIT_OUTPUT_MASK, ctx->output_mask);
+	rdmsrl(MSR_IA32_RTIT_CR3_MATCH, ctx->cr3_match);
+	for (i = 0; i < addr_range; i++) {
+		rdmsrl(MSR_IA32_RTIT_ADDR0_A + i * 2, ctx->addr_a[i]);
+		rdmsrl(MSR_IA32_RTIT_ADDR0_B + i * 2, ctx->addr_b[i]);
+	}
+}
+
+static void pt_guest_enter(struct vcpu_vmx *vmx)
+{
+	if (pt_mode == PT_MODE_SYSTEM)
+		return;
+
+	/*
+	 * GUEST_IA32_RTIT_CTL is already set in the VMCS.
+	 * Save host state before VM entry.
+	 */
+	rdmsrl(MSR_IA32_RTIT_CTL, vmx->pt_desc.host.ctl);
+	if (vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) {
+		wrmsrl(MSR_IA32_RTIT_CTL, 0);
+		pt_save_msr(&vmx->pt_desc.host, vmx->pt_desc.addr_range);
+		pt_load_msr(&vmx->pt_desc.guest, vmx->pt_desc.addr_range);
+	}
+}
+
+static void pt_guest_exit(struct vcpu_vmx *vmx)
+{
+	if (pt_mode == PT_MODE_SYSTEM)
+		return;
+
+	if (vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) {
+		pt_save_msr(&vmx->pt_desc.guest, vmx->pt_desc.addr_range);
+		pt_load_msr(&vmx->pt_desc.host, vmx->pt_desc.addr_range);
+	}
+
+	/* Reload host state (IA32_RTIT_CTL will be cleared on VM exit). */
+	wrmsrl(MSR_IA32_RTIT_CTL, vmx->pt_desc.host.ctl);
+}
+
+void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct vmcs_host_state *host_state;
+#ifdef CONFIG_X86_64
+	int cpu = raw_smp_processor_id();
+#endif
+	unsigned long fs_base, gs_base;
+	u16 fs_sel, gs_sel;
+	int i;
+
+	vmx->req_immediate_exit = false;
+
+	/*
+	 * Note that guest MSRs to be saved/restored can also be changed
+	 * when guest state is loaded. This happens when guest transitions
+	 * to/from long-mode by setting MSR_EFER.LMA.
+	 */
+	if (!vmx->loaded_cpu_state || vmx->guest_msrs_dirty) {
+		vmx->guest_msrs_dirty = false;
+		for (i = 0; i < vmx->save_nmsrs; ++i)
+			kvm_set_shared_msr(vmx->guest_msrs[i].index,
+					   vmx->guest_msrs[i].data,
+					   vmx->guest_msrs[i].mask);
+
+	}
+
+	if (vmx->loaded_cpu_state)
+		return;
+
+	vmx->loaded_cpu_state = vmx->loaded_vmcs;
+	host_state = &vmx->loaded_cpu_state->host_state;
+
+	/*
+	 * Set host fs and gs selectors.  Unfortunately, 22.2.3 does not
+	 * allow segment selectors with cpl > 0 or ti == 1.
+	 */
+	host_state->ldt_sel = kvm_read_ldt();
+
+#ifdef CONFIG_X86_64
+	savesegment(ds, host_state->ds_sel);
+	savesegment(es, host_state->es_sel);
+
+	gs_base = cpu_kernelmode_gs_base(cpu);
+	if (likely(is_64bit_mm(current->mm))) {
+		save_fsgs_for_kvm();
+		fs_sel = current->thread.fsindex;
+		gs_sel = current->thread.gsindex;
+		fs_base = current->thread.fsbase;
+		vmx->msr_host_kernel_gs_base = current->thread.gsbase;
+	} else {
+		savesegment(fs, fs_sel);
+		savesegment(gs, gs_sel);
+		fs_base = read_msr(MSR_FS_BASE);
+		vmx->msr_host_kernel_gs_base = read_msr(MSR_KERNEL_GS_BASE);
+	}
+
+	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
+#else
+	savesegment(fs, fs_sel);
+	savesegment(gs, gs_sel);
+	fs_base = segment_base(fs_sel);
+	gs_base = segment_base(gs_sel);
+#endif
+
+	if (unlikely(fs_sel != host_state->fs_sel)) {
+		if (!(fs_sel & 7))
+			vmcs_write16(HOST_FS_SELECTOR, fs_sel);
+		else
+			vmcs_write16(HOST_FS_SELECTOR, 0);
+		host_state->fs_sel = fs_sel;
+	}
+	if (unlikely(gs_sel != host_state->gs_sel)) {
+		if (!(gs_sel & 7))
+			vmcs_write16(HOST_GS_SELECTOR, gs_sel);
+		else
+			vmcs_write16(HOST_GS_SELECTOR, 0);
+		host_state->gs_sel = gs_sel;
+	}
+	if (unlikely(fs_base != host_state->fs_base)) {
+		vmcs_writel(HOST_FS_BASE, fs_base);
+		host_state->fs_base = fs_base;
+	}
+	if (unlikely(gs_base != host_state->gs_base)) {
+		vmcs_writel(HOST_GS_BASE, gs_base);
+		host_state->gs_base = gs_base;
+	}
+}
+
+static void vmx_prepare_switch_to_host(struct vcpu_vmx *vmx)
+{
+	struct vmcs_host_state *host_state;
+
+	if (!vmx->loaded_cpu_state)
+		return;
+
+	WARN_ON_ONCE(vmx->loaded_cpu_state != vmx->loaded_vmcs);
+	host_state = &vmx->loaded_cpu_state->host_state;
+
+	++vmx->vcpu.stat.host_state_reload;
+	vmx->loaded_cpu_state = NULL;
+
+#ifdef CONFIG_X86_64
+	rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
+#endif
+	if (host_state->ldt_sel || (host_state->gs_sel & 7)) {
+		kvm_load_ldt(host_state->ldt_sel);
+#ifdef CONFIG_X86_64
+		load_gs_index(host_state->gs_sel);
+#else
+		loadsegment(gs, host_state->gs_sel);
+#endif
+	}
+	if (host_state->fs_sel & 7)
+		loadsegment(fs, host_state->fs_sel);
+#ifdef CONFIG_X86_64
+	if (unlikely(host_state->ds_sel | host_state->es_sel)) {
+		loadsegment(ds, host_state->ds_sel);
+		loadsegment(es, host_state->es_sel);
+	}
+#endif
+	invalidate_tss_limit();
+#ifdef CONFIG_X86_64
+	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_host_kernel_gs_base);
+#endif
+	load_fixmap_gdt(raw_smp_processor_id());
+}
+
+#ifdef CONFIG_X86_64
+static u64 vmx_read_guest_kernel_gs_base(struct vcpu_vmx *vmx)
+{
+	preempt_disable();
+	if (vmx->loaded_cpu_state)
+		rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
+	preempt_enable();
+	return vmx->msr_guest_kernel_gs_base;
+}
+
+static void vmx_write_guest_kernel_gs_base(struct vcpu_vmx *vmx, u64 data)
+{
+	preempt_disable();
+	if (vmx->loaded_cpu_state)
+		wrmsrl(MSR_KERNEL_GS_BASE, data);
+	preempt_enable();
+	vmx->msr_guest_kernel_gs_base = data;
+}
+#endif
+
+static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
+{
+	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
+	struct pi_desc old, new;
+	unsigned int dest;
+
+	/*
+	 * In case of hot-plug or hot-unplug, we may have to undo
+	 * vmx_vcpu_pi_put even if there is no assigned device.  And we
+	 * always keep PI.NDST up to date for simplicity: it makes the
+	 * code easier, and CPU migration is not a fast path.
+	 */
+	if (!pi_test_sn(pi_desc) && vcpu->cpu == cpu)
+		return;
+
+	/*
+	 * First handle the simple case where no cmpxchg is necessary; just
+	 * allow posting non-urgent interrupts.
+	 *
+	 * If the 'nv' field is POSTED_INTR_WAKEUP_VECTOR, do not change
+	 * PI.NDST: pi_post_block will do it for us and the wakeup_handler
+	 * expects the VCPU to be on the blocked_vcpu_list that matches
+	 * PI.NDST.
+	 */
+	if (pi_desc->nv == POSTED_INTR_WAKEUP_VECTOR ||
+	    vcpu->cpu == cpu) {
+		pi_clear_sn(pi_desc);
+		return;
+	}
+
+	/* The full case.  */
+	do {
+		old.control = new.control = pi_desc->control;
+
+		dest = cpu_physical_id(cpu);
+
+		if (x2apic_enabled())
+			new.ndst = dest;
+		else
+			new.ndst = (dest << 8) & 0xFF00;
+
+		new.sn = 0;
+	} while (cmpxchg64(&pi_desc->control, old.control,
+			   new.control) != old.control);
+}
+
+/*
+ * Switches to specified vcpu, until a matching vcpu_put(), but assumes
+ * vcpu mutex is already taken.
+ */
+void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	bool already_loaded = vmx->loaded_vmcs->cpu == cpu;
+
+	if (!already_loaded) {
+		loaded_vmcs_clear(vmx->loaded_vmcs);
+		local_irq_disable();
+		crash_disable_local_vmclear(cpu);
+
+		/*
+		 * Read loaded_vmcs->cpu should be before fetching
+		 * loaded_vmcs->loaded_vmcss_on_cpu_link.
+		 * See the comments in __loaded_vmcs_clear().
+		 */
+		smp_rmb();
+
+		list_add(&vmx->loaded_vmcs->loaded_vmcss_on_cpu_link,
+			 &per_cpu(loaded_vmcss_on_cpu, cpu));
+		crash_enable_local_vmclear(cpu);
+		local_irq_enable();
+	}
+
+	if (per_cpu(current_vmcs, cpu) != vmx->loaded_vmcs->vmcs) {
+		per_cpu(current_vmcs, cpu) = vmx->loaded_vmcs->vmcs;
+		vmcs_load(vmx->loaded_vmcs->vmcs);
+		indirect_branch_prediction_barrier();
+	}
+
+	if (!already_loaded) {
+		void *gdt = get_current_gdt_ro();
+		unsigned long sysenter_esp;
+
+		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+
+		/*
+		 * Linux uses per-cpu TSS and GDT, so set these when switching
+		 * processors.  See 22.2.4.
+		 */
+		vmcs_writel(HOST_TR_BASE,
+			    (unsigned long)&get_cpu_entry_area(cpu)->tss.x86_tss);
+		vmcs_writel(HOST_GDTR_BASE, (unsigned long)gdt);   /* 22.2.4 */
+
+		/*
+		 * VM exits change the host TR limit to 0x67 after a VM
+		 * exit.  This is okay, since 0x67 covers everything except
+		 * the IO bitmap and have have code to handle the IO bitmap
+		 * being lost after a VM exit.
+		 */
+		BUILD_BUG_ON(IO_BITMAP_OFFSET - 1 != 0x67);
+
+		rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
+		vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
+
+		vmx->loaded_vmcs->cpu = cpu;
+	}
+
+	/* Setup TSC multiplier */
+	if (kvm_has_tsc_control &&
+	    vmx->current_tsc_ratio != vcpu->arch.tsc_scaling_ratio)
+		decache_tsc_multiplier(vmx);
+
+	vmx_vcpu_pi_load(vcpu, cpu);
+	vmx->host_pkru = read_pkru();
+	vmx->host_debugctlmsr = get_debugctlmsr();
+}
+
+static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
+{
+	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
+
+	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
+		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
+		!kvm_vcpu_apicv_active(vcpu))
+		return;
+
+	/* Set SN when the vCPU is preempted */
+	if (vcpu->preempted)
+		pi_set_sn(pi_desc);
+}
+
+void vmx_vcpu_put(struct kvm_vcpu *vcpu)
+{
+	vmx_vcpu_pi_put(vcpu);
+
+	vmx_prepare_switch_to_host(to_vmx(vcpu));
+}
+
+static bool emulation_required(struct kvm_vcpu *vcpu)
+{
+	return emulate_invalid_guest_state && !guest_state_valid(vcpu);
+}
+
+static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu);
+
+unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
+{
+	unsigned long rflags, save_rflags;
+
+	if (!test_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail)) {
+		__set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail);
+		rflags = vmcs_readl(GUEST_RFLAGS);
+		if (to_vmx(vcpu)->rmode.vm86_active) {
+			rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
+			save_rflags = to_vmx(vcpu)->rmode.save_rflags;
+			rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
+		}
+		to_vmx(vcpu)->rflags = rflags;
+	}
+	return to_vmx(vcpu)->rflags;
+}
+
+void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
+{
+	unsigned long old_rflags = vmx_get_rflags(vcpu);
+
+	__set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail);
+	to_vmx(vcpu)->rflags = rflags;
+	if (to_vmx(vcpu)->rmode.vm86_active) {
+		to_vmx(vcpu)->rmode.save_rflags = rflags;
+		rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
+	}
+	vmcs_writel(GUEST_RFLAGS, rflags);
+
+	if ((old_rflags ^ to_vmx(vcpu)->rflags) & X86_EFLAGS_VM)
+		to_vmx(vcpu)->emulation_required = emulation_required(vcpu);
+}
+
+u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu)
+{
+	u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+	int ret = 0;
+
+	if (interruptibility & GUEST_INTR_STATE_STI)
+		ret |= KVM_X86_SHADOW_INT_STI;
+	if (interruptibility & GUEST_INTR_STATE_MOV_SS)
+		ret |= KVM_X86_SHADOW_INT_MOV_SS;
+
+	return ret;
+}
+
+void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
+{
+	u32 interruptibility_old = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
+	u32 interruptibility = interruptibility_old;
+
+	interruptibility &= ~(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS);
+
+	if (mask & KVM_X86_SHADOW_INT_MOV_SS)
+		interruptibility |= GUEST_INTR_STATE_MOV_SS;
+	else if (mask & KVM_X86_SHADOW_INT_STI)
+		interruptibility |= GUEST_INTR_STATE_STI;
+
+	if ((interruptibility != interruptibility_old))
+		vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, interruptibility);
+}
+
+static int vmx_rtit_ctl_check(struct kvm_vcpu *vcpu, u64 data)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long value;
+
+	/*
+	 * Any MSR write that attempts to change bits marked reserved will
+	 * case a #GP fault.
+	 */
+	if (data & vmx->pt_desc.ctl_bitmask)
+		return 1;
+
+	/*
+	 * Any attempt to modify IA32_RTIT_CTL while TraceEn is set will
+	 * result in a #GP unless the same write also clears TraceEn.
+	 */
+	if ((vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) &&
+		((vmx->pt_desc.guest.ctl ^ data) & ~RTIT_CTL_TRACEEN))
+		return 1;
+
+	/*
+	 * WRMSR to IA32_RTIT_CTL that sets TraceEn but clears this bit
+	 * and FabricEn would cause #GP, if
+	 * CPUID.(EAX=14H, ECX=0):ECX.SNGLRGNOUT[bit 2] = 0
+	 */
+	if ((data & RTIT_CTL_TRACEEN) && !(data & RTIT_CTL_TOPA) &&
+		!(data & RTIT_CTL_FABRIC_EN) &&
+		!intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_single_range_output))
+		return 1;
+
+	/*
+	 * MTCFreq, CycThresh and PSBFreq encodings check, any MSR write that
+	 * utilize encodings marked reserved will casue a #GP fault.
+	 */
+	value = intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc_periods);
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc) &&
+			!test_bit((data & RTIT_CTL_MTC_RANGE) >>
+			RTIT_CTL_MTC_RANGE_OFFSET, &value))
+		return 1;
+	value = intel_pt_validate_cap(vmx->pt_desc.caps,
+						PT_CAP_cycle_thresholds);
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc) &&
+			!test_bit((data & RTIT_CTL_CYC_THRESH) >>
+			RTIT_CTL_CYC_THRESH_OFFSET, &value))
+		return 1;
+	value = intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_periods);
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc) &&
+			!test_bit((data & RTIT_CTL_PSB_FREQ) >>
+			RTIT_CTL_PSB_FREQ_OFFSET, &value))
+		return 1;
+
+	/*
+	 * If ADDRx_CFG is reserved or the encodings is >2 will
+	 * cause a #GP fault.
+	 */
+	value = (data & RTIT_CTL_ADDR0) >> RTIT_CTL_ADDR0_OFFSET;
+	if ((value && (vmx->pt_desc.addr_range < 1)) || (value > 2))
+		return 1;
+	value = (data & RTIT_CTL_ADDR1) >> RTIT_CTL_ADDR1_OFFSET;
+	if ((value && (vmx->pt_desc.addr_range < 2)) || (value > 2))
+		return 1;
+	value = (data & RTIT_CTL_ADDR2) >> RTIT_CTL_ADDR2_OFFSET;
+	if ((value && (vmx->pt_desc.addr_range < 3)) || (value > 2))
+		return 1;
+	value = (data & RTIT_CTL_ADDR3) >> RTIT_CTL_ADDR3_OFFSET;
+	if ((value && (vmx->pt_desc.addr_range < 4)) || (value > 2))
+		return 1;
+
+	return 0;
+}
+
+
+static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
+{
+	unsigned long rip;
+
+	rip = kvm_rip_read(vcpu);
+	rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+	kvm_rip_write(vcpu, rip);
+
+	/* skipping an emulated instruction also counts */
+	vmx_set_interrupt_shadow(vcpu, 0);
+}
+
+static void vmx_clear_hlt(struct kvm_vcpu *vcpu)
+{
+	/*
+	 * Ensure that we clear the HLT state in the VMCS.  We don't need to
+	 * explicitly skip the instruction because if the HLT state is set,
+	 * then the instruction is already executing and RIP has already been
+	 * advanced.
+	 */
+	if (kvm_hlt_in_guest(vcpu->kvm) &&
+			vmcs_read32(GUEST_ACTIVITY_STATE) == GUEST_ACTIVITY_HLT)
+		vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
+}
+
+static void vmx_queue_exception(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned nr = vcpu->arch.exception.nr;
+	bool has_error_code = vcpu->arch.exception.has_error_code;
+	u32 error_code = vcpu->arch.exception.error_code;
+	u32 intr_info = nr | INTR_INFO_VALID_MASK;
+
+	kvm_deliver_exception_payload(vcpu);
+
+	if (has_error_code) {
+		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
+		intr_info |= INTR_INFO_DELIVER_CODE_MASK;
+	}
+
+	if (vmx->rmode.vm86_active) {
+		int inc_eip = 0;
+		if (kvm_exception_is_soft(nr))
+			inc_eip = vcpu->arch.event_exit_inst_len;
+		if (kvm_inject_realmode_interrupt(vcpu, nr, inc_eip) != EMULATE_DONE)
+			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
+		return;
+	}
+
+	WARN_ON_ONCE(vmx->emulation_required);
+
+	if (kvm_exception_is_soft(nr)) {
+		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+			     vmx->vcpu.arch.event_exit_inst_len);
+		intr_info |= INTR_TYPE_SOFT_EXCEPTION;
+	} else
+		intr_info |= INTR_TYPE_HARD_EXCEPTION;
+
+	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
+
+	vmx_clear_hlt(vcpu);
+}
+
+static bool vmx_rdtscp_supported(void)
+{
+	return cpu_has_vmx_rdtscp();
+}
+
+static bool vmx_invpcid_supported(void)
+{
+	return cpu_has_vmx_invpcid();
+}
+
+/*
+ * Swap MSR entry in host/guest MSR entry array.
+ */
+static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
+{
+	struct shared_msr_entry tmp;
+
+	tmp = vmx->guest_msrs[to];
+	vmx->guest_msrs[to] = vmx->guest_msrs[from];
+	vmx->guest_msrs[from] = tmp;
+}
+
+/*
+ * Set up the vmcs to automatically save and restore system
+ * msrs.  Don't touch the 64-bit msrs if the guest is in legacy
+ * mode, as fiddling with msrs is very expensive.
+ */
+static void setup_msrs(struct vcpu_vmx *vmx)
+{
+	int save_nmsrs, index;
+
+	save_nmsrs = 0;
+#ifdef CONFIG_X86_64
+	/*
+	 * The SYSCALL MSRs are only needed on long mode guests, and only
+	 * when EFER.SCE is set.
+	 */
+	if (is_long_mode(&vmx->vcpu) && (vmx->vcpu.arch.efer & EFER_SCE)) {
+		index = __find_msr_index(vmx, MSR_STAR);
+		if (index >= 0)
+			move_msr_up(vmx, index, save_nmsrs++);
+		index = __find_msr_index(vmx, MSR_LSTAR);
+		if (index >= 0)
+			move_msr_up(vmx, index, save_nmsrs++);
+		index = __find_msr_index(vmx, MSR_SYSCALL_MASK);
+		if (index >= 0)
+			move_msr_up(vmx, index, save_nmsrs++);
+	}
+#endif
+	index = __find_msr_index(vmx, MSR_EFER);
+	if (index >= 0 && update_transition_efer(vmx, index))
+		move_msr_up(vmx, index, save_nmsrs++);
+	index = __find_msr_index(vmx, MSR_TSC_AUX);
+	if (index >= 0 && guest_cpuid_has(&vmx->vcpu, X86_FEATURE_RDTSCP))
+		move_msr_up(vmx, index, save_nmsrs++);
+
+	vmx->save_nmsrs = save_nmsrs;
+	vmx->guest_msrs_dirty = true;
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmx_update_msr_bitmap(&vmx->vcpu);
+}
+
+static u64 vmx_read_l1_tsc_offset(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	if (is_guest_mode(vcpu) &&
+	    (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING))
+		return vcpu->arch.tsc_offset - vmcs12->tsc_offset;
+
+	return vcpu->arch.tsc_offset;
+}
+
+static u64 vmx_write_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	u64 g_tsc_offset = 0;
+
+	/*
+	 * We're here if L1 chose not to trap WRMSR to TSC. According
+	 * to the spec, this should set L1's TSC; The offset that L1
+	 * set for L2 remains unchanged, and still needs to be added
+	 * to the newly set TSC to get L2's TSC.
+	 */
+	if (is_guest_mode(vcpu) &&
+	    (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING))
+		g_tsc_offset = vmcs12->tsc_offset;
+
+	trace_kvm_write_tsc_offset(vcpu->vcpu_id,
+				   vcpu->arch.tsc_offset - g_tsc_offset,
+				   offset);
+	vmcs_write64(TSC_OFFSET, offset + g_tsc_offset);
+	return offset + g_tsc_offset;
+}
+
+/*
+ * nested_vmx_allowed() checks whether a guest should be allowed to use VMX
+ * instructions and MSRs (i.e., nested VMX). Nested VMX is disabled for
+ * all guests if the "nested" module option is off, and can also be disabled
+ * for a single guest by disabling its VMX cpuid bit.
+ */
+bool nested_vmx_allowed(struct kvm_vcpu *vcpu)
+{
+	return nested && guest_cpuid_has(vcpu, X86_FEATURE_VMX);
+}
+
+static inline bool vmx_feature_control_msr_valid(struct kvm_vcpu *vcpu,
+						 uint64_t val)
+{
+	uint64_t valid_bits = to_vmx(vcpu)->msr_ia32_feature_control_valid_bits;
+
+	return !(val & ~valid_bits);
+}
+
+static int vmx_get_msr_feature(struct kvm_msr_entry *msr)
+{
+	switch (msr->index) {
+	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
+		if (!nested)
+			return 1;
+		return vmx_get_vmx_msr(&vmcs_config.nested, msr->index, &msr->data);
+	default:
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * Reads an msr value (of 'msr_index') into 'pdata'.
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct shared_msr_entry *msr;
+	u32 index;
+
+	switch (msr_info->index) {
+#ifdef CONFIG_X86_64
+	case MSR_FS_BASE:
+		msr_info->data = vmcs_readl(GUEST_FS_BASE);
+		break;
+	case MSR_GS_BASE:
+		msr_info->data = vmcs_readl(GUEST_GS_BASE);
+		break;
+	case MSR_KERNEL_GS_BASE:
+		msr_info->data = vmx_read_guest_kernel_gs_base(vmx);
+		break;
+#endif
+	case MSR_EFER:
+		return kvm_get_msr_common(vcpu, msr_info);
+	case MSR_IA32_SPEC_CTRL:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+			return 1;
+
+		msr_info->data = to_vmx(vcpu)->spec_ctrl;
+		break;
+	case MSR_IA32_ARCH_CAPABILITIES:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_ARCH_CAPABILITIES))
+			return 1;
+		msr_info->data = to_vmx(vcpu)->arch_capabilities;
+		break;
+	case MSR_IA32_SYSENTER_CS:
+		msr_info->data = vmcs_read32(GUEST_SYSENTER_CS);
+		break;
+	case MSR_IA32_SYSENTER_EIP:
+		msr_info->data = vmcs_readl(GUEST_SYSENTER_EIP);
+		break;
+	case MSR_IA32_SYSENTER_ESP:
+		msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP);
+		break;
+	case MSR_IA32_BNDCFGS:
+		if (!kvm_mpx_supported() ||
+		    (!msr_info->host_initiated &&
+		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
+			return 1;
+		msr_info->data = vmcs_read64(GUEST_BNDCFGS);
+		break;
+	case MSR_IA32_MCG_EXT_CTL:
+		if (!msr_info->host_initiated &&
+		    !(vmx->msr_ia32_feature_control &
+		      FEATURE_CONTROL_LMCE))
+			return 1;
+		msr_info->data = vcpu->arch.mcg_ext_ctl;
+		break;
+	case MSR_IA32_FEATURE_CONTROL:
+		msr_info->data = vmx->msr_ia32_feature_control;
+		break;
+	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
+		if (!nested_vmx_allowed(vcpu))
+			return 1;
+		return vmx_get_vmx_msr(&vmx->nested.msrs, msr_info->index,
+				       &msr_info->data);
+	case MSR_IA32_XSS:
+		if (!vmx_xsaves_supported())
+			return 1;
+		msr_info->data = vcpu->arch.ia32_xss;
+		break;
+	case MSR_IA32_RTIT_CTL:
+		if (pt_mode != PT_MODE_HOST_GUEST)
+			return 1;
+		msr_info->data = vmx->pt_desc.guest.ctl;
+		break;
+	case MSR_IA32_RTIT_STATUS:
+		if (pt_mode != PT_MODE_HOST_GUEST)
+			return 1;
+		msr_info->data = vmx->pt_desc.guest.status;
+		break;
+	case MSR_IA32_RTIT_CR3_MATCH:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			!intel_pt_validate_cap(vmx->pt_desc.caps,
+						PT_CAP_cr3_filtering))
+			return 1;
+		msr_info->data = vmx->pt_desc.guest.cr3_match;
+		break;
+	case MSR_IA32_RTIT_OUTPUT_BASE:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(!intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_topa_output) &&
+			 !intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_single_range_output)))
+			return 1;
+		msr_info->data = vmx->pt_desc.guest.output_base;
+		break;
+	case MSR_IA32_RTIT_OUTPUT_MASK:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(!intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_topa_output) &&
+			 !intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_single_range_output)))
+			return 1;
+		msr_info->data = vmx->pt_desc.guest.output_mask;
+		break;
+	case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B:
+		index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_num_address_ranges)))
+			return 1;
+		if (index % 2)
+			msr_info->data = vmx->pt_desc.guest.addr_b[index / 2];
+		else
+			msr_info->data = vmx->pt_desc.guest.addr_a[index / 2];
+		break;
+	case MSR_TSC_AUX:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
+			return 1;
+		/* Otherwise falls through */
+	default:
+		msr = find_msr_entry(vmx, msr_info->index);
+		if (msr) {
+			msr_info->data = msr->data;
+			break;
+		}
+		return kvm_get_msr_common(vcpu, msr_info);
+	}
+
+	return 0;
+}
+
+/*
+ * Writes msr value into into the appropriate "register".
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct shared_msr_entry *msr;
+	int ret = 0;
+	u32 msr_index = msr_info->index;
+	u64 data = msr_info->data;
+	u32 index;
+
+	switch (msr_index) {
+	case MSR_EFER:
+		ret = kvm_set_msr_common(vcpu, msr_info);
+		break;
+#ifdef CONFIG_X86_64
+	case MSR_FS_BASE:
+		vmx_segment_cache_clear(vmx);
+		vmcs_writel(GUEST_FS_BASE, data);
+		break;
+	case MSR_GS_BASE:
+		vmx_segment_cache_clear(vmx);
+		vmcs_writel(GUEST_GS_BASE, data);
+		break;
+	case MSR_KERNEL_GS_BASE:
+		vmx_write_guest_kernel_gs_base(vmx, data);
+		break;
+#endif
+	case MSR_IA32_SYSENTER_CS:
+		vmcs_write32(GUEST_SYSENTER_CS, data);
+		break;
+	case MSR_IA32_SYSENTER_EIP:
+		vmcs_writel(GUEST_SYSENTER_EIP, data);
+		break;
+	case MSR_IA32_SYSENTER_ESP:
+		vmcs_writel(GUEST_SYSENTER_ESP, data);
+		break;
+	case MSR_IA32_BNDCFGS:
+		if (!kvm_mpx_supported() ||
+		    (!msr_info->host_initiated &&
+		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
+			return 1;
+		if (is_noncanonical_address(data & PAGE_MASK, vcpu) ||
+		    (data & MSR_IA32_BNDCFGS_RSVD))
+			return 1;
+		vmcs_write64(GUEST_BNDCFGS, data);
+		break;
+	case MSR_IA32_SPEC_CTRL:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+			return 1;
+
+		/* The STIBP bit doesn't fault even if it's not advertised */
+		if (data & ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD))
+			return 1;
+
+		vmx->spec_ctrl = data;
+
+		if (!data)
+			break;
+
+		/*
+		 * For non-nested:
+		 * When it's written (to non-zero) for the first time, pass
+		 * it through.
+		 *
+		 * For nested:
+		 * The handling of the MSR bitmap for L2 guests is done in
+		 * nested_vmx_merge_msr_bitmap. We should not touch the
+		 * vmcs02.msr_bitmap here since it gets completely overwritten
+		 * in the merging. We update the vmcs01 here for L1 as well
+		 * since it will end up touching the MSR anyway now.
+		 */
+		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap,
+					      MSR_IA32_SPEC_CTRL,
+					      MSR_TYPE_RW);
+		break;
+	case MSR_IA32_PRED_CMD:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+			return 1;
+
+		if (data & ~PRED_CMD_IBPB)
+			return 1;
+
+		if (!data)
+			break;
+
+		wrmsrl(MSR_IA32_PRED_CMD, PRED_CMD_IBPB);
+
+		/*
+		 * For non-nested:
+		 * When it's written (to non-zero) for the first time, pass
+		 * it through.
+		 *
+		 * For nested:
+		 * The handling of the MSR bitmap for L2 guests is done in
+		 * nested_vmx_merge_msr_bitmap. We should not touch the
+		 * vmcs02.msr_bitmap here since it gets completely overwritten
+		 * in the merging.
+		 */
+		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap, MSR_IA32_PRED_CMD,
+					      MSR_TYPE_W);
+		break;
+	case MSR_IA32_ARCH_CAPABILITIES:
+		if (!msr_info->host_initiated)
+			return 1;
+		vmx->arch_capabilities = data;
+		break;
+	case MSR_IA32_CR_PAT:
+		if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
+			if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
+				return 1;
+			vmcs_write64(GUEST_IA32_PAT, data);
+			vcpu->arch.pat = data;
+			break;
+		}
+		ret = kvm_set_msr_common(vcpu, msr_info);
+		break;
+	case MSR_IA32_TSC_ADJUST:
+		ret = kvm_set_msr_common(vcpu, msr_info);
+		break;
+	case MSR_IA32_MCG_EXT_CTL:
+		if ((!msr_info->host_initiated &&
+		     !(to_vmx(vcpu)->msr_ia32_feature_control &
+		       FEATURE_CONTROL_LMCE)) ||
+		    (data & ~MCG_EXT_CTL_LMCE_EN))
+			return 1;
+		vcpu->arch.mcg_ext_ctl = data;
+		break;
+	case MSR_IA32_FEATURE_CONTROL:
+		if (!vmx_feature_control_msr_valid(vcpu, data) ||
+		    (to_vmx(vcpu)->msr_ia32_feature_control &
+		     FEATURE_CONTROL_LOCKED && !msr_info->host_initiated))
+			return 1;
+		vmx->msr_ia32_feature_control = data;
+		if (msr_info->host_initiated && data == 0)
+			vmx_leave_nested(vcpu);
+		break;
+	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
+		if (!msr_info->host_initiated)
+			return 1; /* they are read-only */
+		if (!nested_vmx_allowed(vcpu))
+			return 1;
+		return vmx_set_vmx_msr(vcpu, msr_index, data);
+	case MSR_IA32_XSS:
+		if (!vmx_xsaves_supported())
+			return 1;
+		/*
+		 * The only supported bit as of Skylake is bit 8, but
+		 * it is not supported on KVM.
+		 */
+		if (data != 0)
+			return 1;
+		vcpu->arch.ia32_xss = data;
+		if (vcpu->arch.ia32_xss != host_xss)
+			add_atomic_switch_msr(vmx, MSR_IA32_XSS,
+				vcpu->arch.ia32_xss, host_xss, false);
+		else
+			clear_atomic_switch_msr(vmx, MSR_IA32_XSS);
+		break;
+	case MSR_IA32_RTIT_CTL:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			vmx_rtit_ctl_check(vcpu, data) ||
+			vmx->nested.vmxon)
+			return 1;
+		vmcs_write64(GUEST_IA32_RTIT_CTL, data);
+		vmx->pt_desc.guest.ctl = data;
+		pt_update_intercept_for_msr(vmx);
+		break;
+	case MSR_IA32_RTIT_STATUS:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
+			(data & MSR_IA32_RTIT_STATUS_MASK))
+			return 1;
+		vmx->pt_desc.guest.status = data;
+		break;
+	case MSR_IA32_RTIT_CR3_MATCH:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
+			!intel_pt_validate_cap(vmx->pt_desc.caps,
+						PT_CAP_cr3_filtering))
+			return 1;
+		vmx->pt_desc.guest.cr3_match = data;
+		break;
+	case MSR_IA32_RTIT_OUTPUT_BASE:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
+			(!intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_topa_output) &&
+			 !intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_single_range_output)) ||
+			(data & MSR_IA32_RTIT_OUTPUT_BASE_MASK))
+			return 1;
+		vmx->pt_desc.guest.output_base = data;
+		break;
+	case MSR_IA32_RTIT_OUTPUT_MASK:
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
+			(!intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_topa_output) &&
+			 !intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_single_range_output)))
+			return 1;
+		vmx->pt_desc.guest.output_mask = data;
+		break;
+	case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B:
+		index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
+		if ((pt_mode != PT_MODE_HOST_GUEST) ||
+			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
+			(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
+					PT_CAP_num_address_ranges)))
+			return 1;
+		if (index % 2)
+			vmx->pt_desc.guest.addr_b[index / 2] = data;
+		else
+			vmx->pt_desc.guest.addr_a[index / 2] = data;
+		break;
+	case MSR_TSC_AUX:
+		if (!msr_info->host_initiated &&
+		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
+			return 1;
+		/* Check reserved bit, higher 32 bits should be zero */
+		if ((data >> 32) != 0)
+			return 1;
+		/* Otherwise falls through */
+	default:
+		msr = find_msr_entry(vmx, msr_index);
+		if (msr) {
+			u64 old_msr_data = msr->data;
+			msr->data = data;
+			if (msr - vmx->guest_msrs < vmx->save_nmsrs) {
+				preempt_disable();
+				ret = kvm_set_shared_msr(msr->index, msr->data,
+							 msr->mask);
+				preempt_enable();
+				if (ret)
+					msr->data = old_msr_data;
+			}
+			break;
+		}
+		ret = kvm_set_msr_common(vcpu, msr_info);
+	}
+
+	return ret;
+}
+
+static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
+{
+	__set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
+	switch (reg) {
+	case VCPU_REGS_RSP:
+		vcpu->arch.regs[VCPU_REGS_RSP] = vmcs_readl(GUEST_RSP);
+		break;
+	case VCPU_REGS_RIP:
+		vcpu->arch.regs[VCPU_REGS_RIP] = vmcs_readl(GUEST_RIP);
+		break;
+	case VCPU_EXREG_PDPTR:
+		if (enable_ept)
+			ept_save_pdptrs(vcpu);
+		break;
+	default:
+		break;
+	}
+}
+
+static __init int cpu_has_kvm_support(void)
+{
+	return cpu_has_vmx();
+}
+
+static __init int vmx_disabled_by_bios(void)
+{
+	u64 msr;
+
+	rdmsrl(MSR_IA32_FEATURE_CONTROL, msr);
+	if (msr & FEATURE_CONTROL_LOCKED) {
+		/* launched w/ TXT and VMX disabled */
+		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
+			&& tboot_enabled())
+			return 1;
+		/* launched w/o TXT and VMX only enabled w/ TXT */
+		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
+			&& (msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
+			&& !tboot_enabled()) {
+			printk(KERN_WARNING "kvm: disable TXT in the BIOS or "
+				"activate TXT before enabling KVM\n");
+			return 1;
+		}
+		/* launched w/o TXT and VMX disabled */
+		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
+			&& !tboot_enabled())
+			return 1;
+	}
+
+	return 0;
+}
+
+static void kvm_cpu_vmxon(u64 addr)
+{
+	cr4_set_bits(X86_CR4_VMXE);
+	intel_pt_handle_vmx(1);
+
+	asm volatile ("vmxon %0" : : "m"(addr));
+}
+
+static int hardware_enable(void)
+{
+	int cpu = raw_smp_processor_id();
+	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
+	u64 old, test_bits;
+
+	if (cr4_read_shadow() & X86_CR4_VMXE)
+		return -EBUSY;
+
+	/*
+	 * This can happen if we hot-added a CPU but failed to allocate
+	 * VP assist page for it.
+	 */
+	if (static_branch_unlikely(&enable_evmcs) &&
+	    !hv_get_vp_assist_page(cpu))
+		return -EFAULT;
+
+	INIT_LIST_HEAD(&per_cpu(loaded_vmcss_on_cpu, cpu));
+	INIT_LIST_HEAD(&per_cpu(blocked_vcpu_on_cpu, cpu));
+	spin_lock_init(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
+
+	/*
+	 * Now we can enable the vmclear operation in kdump
+	 * since the loaded_vmcss_on_cpu list on this cpu
+	 * has been initialized.
+	 *
+	 * Though the cpu is not in VMX operation now, there
+	 * is no problem to enable the vmclear operation
+	 * for the loaded_vmcss_on_cpu list is empty!
+	 */
+	crash_enable_local_vmclear(cpu);
+
+	rdmsrl(MSR_IA32_FEATURE_CONTROL, old);
+
+	test_bits = FEATURE_CONTROL_LOCKED;
+	test_bits |= FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
+	if (tboot_enabled())
+		test_bits |= FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX;
+
+	if ((old & test_bits) != test_bits) {
+		/* enable and lock */
+		wrmsrl(MSR_IA32_FEATURE_CONTROL, old | test_bits);
+	}
+	kvm_cpu_vmxon(phys_addr);
+	if (enable_ept)
+		ept_sync_global();
+
+	return 0;
+}
+
+static void vmclear_local_loaded_vmcss(void)
+{
+	int cpu = raw_smp_processor_id();
+	struct loaded_vmcs *v, *n;
+
+	list_for_each_entry_safe(v, n, &per_cpu(loaded_vmcss_on_cpu, cpu),
+				 loaded_vmcss_on_cpu_link)
+		__loaded_vmcs_clear(v);
+}
+
+
+/* Just like cpu_vmxoff(), but with the __kvm_handle_fault_on_reboot()
+ * tricks.
+ */
+static void kvm_cpu_vmxoff(void)
+{
+	asm volatile (__ex("vmxoff"));
+
+	intel_pt_handle_vmx(0);
+	cr4_clear_bits(X86_CR4_VMXE);
+}
+
+static void hardware_disable(void)
+{
+	vmclear_local_loaded_vmcss();
+	kvm_cpu_vmxoff();
+}
+
+static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
+				      u32 msr, u32 *result)
+{
+	u32 vmx_msr_low, vmx_msr_high;
+	u32 ctl = ctl_min | ctl_opt;
+
+	rdmsr(msr, vmx_msr_low, vmx_msr_high);
+
+	ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */
+	ctl |= vmx_msr_low;  /* bit == 1 in low word  ==> must be one  */
+
+	/* Ensure minimum (required) set of control bits are supported. */
+	if (ctl_min & ~ctl)
+		return -EIO;
+
+	*result = ctl;
+	return 0;
+}
+
+static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
+				    struct vmx_capability *vmx_cap)
+{
+	u32 vmx_msr_low, vmx_msr_high;
+	u32 min, opt, min2, opt2;
+	u32 _pin_based_exec_control = 0;
+	u32 _cpu_based_exec_control = 0;
+	u32 _cpu_based_2nd_exec_control = 0;
+	u32 _vmexit_control = 0;
+	u32 _vmentry_control = 0;
+
+	memset(vmcs_conf, 0, sizeof(*vmcs_conf));
+	min = CPU_BASED_HLT_EXITING |
+#ifdef CONFIG_X86_64
+	      CPU_BASED_CR8_LOAD_EXITING |
+	      CPU_BASED_CR8_STORE_EXITING |
+#endif
+	      CPU_BASED_CR3_LOAD_EXITING |
+	      CPU_BASED_CR3_STORE_EXITING |
+	      CPU_BASED_UNCOND_IO_EXITING |
+	      CPU_BASED_MOV_DR_EXITING |
+	      CPU_BASED_USE_TSC_OFFSETING |
+	      CPU_BASED_MWAIT_EXITING |
+	      CPU_BASED_MONITOR_EXITING |
+	      CPU_BASED_INVLPG_EXITING |
+	      CPU_BASED_RDPMC_EXITING;
+
+	opt = CPU_BASED_TPR_SHADOW |
+	      CPU_BASED_USE_MSR_BITMAPS |
+	      CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
+	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS,
+				&_cpu_based_exec_control) < 0)
+		return -EIO;
+#ifdef CONFIG_X86_64
+	if ((_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
+		_cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
+					   ~CPU_BASED_CR8_STORE_EXITING;
+#endif
+	if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
+		min2 = 0;
+		opt2 = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+			SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
+			SECONDARY_EXEC_WBINVD_EXITING |
+			SECONDARY_EXEC_ENABLE_VPID |
+			SECONDARY_EXEC_ENABLE_EPT |
+			SECONDARY_EXEC_UNRESTRICTED_GUEST |
+			SECONDARY_EXEC_PAUSE_LOOP_EXITING |
+			SECONDARY_EXEC_DESC |
+			SECONDARY_EXEC_RDTSCP |
+			SECONDARY_EXEC_ENABLE_INVPCID |
+			SECONDARY_EXEC_APIC_REGISTER_VIRT |
+			SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
+			SECONDARY_EXEC_SHADOW_VMCS |
+			SECONDARY_EXEC_XSAVES |
+			SECONDARY_EXEC_RDSEED_EXITING |
+			SECONDARY_EXEC_RDRAND_EXITING |
+			SECONDARY_EXEC_ENABLE_PML |
+			SECONDARY_EXEC_TSC_SCALING |
+			SECONDARY_EXEC_PT_USE_GPA |
+			SECONDARY_EXEC_PT_CONCEAL_VMX |
+			SECONDARY_EXEC_ENABLE_VMFUNC |
+			SECONDARY_EXEC_ENCLS_EXITING;
+		if (adjust_vmx_controls(min2, opt2,
+					MSR_IA32_VMX_PROCBASED_CTLS2,
+					&_cpu_based_2nd_exec_control) < 0)
+			return -EIO;
+	}
+#ifndef CONFIG_X86_64
+	if (!(_cpu_based_2nd_exec_control &
+				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
+		_cpu_based_exec_control &= ~CPU_BASED_TPR_SHADOW;
+#endif
+
+	if (!(_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
+		_cpu_based_2nd_exec_control &= ~(
+				SECONDARY_EXEC_APIC_REGISTER_VIRT |
+				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
+				SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
+
+	rdmsr_safe(MSR_IA32_VMX_EPT_VPID_CAP,
+		&vmx_cap->ept, &vmx_cap->vpid);
+
+	if (_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_EPT) {
+		/* CR3 accesses and invlpg don't need to cause VM Exits when EPT
+		   enabled */
+		_cpu_based_exec_control &= ~(CPU_BASED_CR3_LOAD_EXITING |
+					     CPU_BASED_CR3_STORE_EXITING |
+					     CPU_BASED_INVLPG_EXITING);
+	} else if (vmx_cap->ept) {
+		vmx_cap->ept = 0;
+		pr_warn_once("EPT CAP should not exist if not support "
+				"1-setting enable EPT VM-execution control\n");
+	}
+	if (!(_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_VPID) &&
+		vmx_cap->vpid) {
+		vmx_cap->vpid = 0;
+		pr_warn_once("VPID CAP should not exist if not support "
+				"1-setting enable VPID VM-execution control\n");
+	}
+
+	min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT;
+#ifdef CONFIG_X86_64
+	min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
+#endif
+	opt = VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |
+	      VM_EXIT_SAVE_IA32_PAT |
+	      VM_EXIT_LOAD_IA32_PAT |
+	      VM_EXIT_LOAD_IA32_EFER |
+	      VM_EXIT_CLEAR_BNDCFGS |
+	      VM_EXIT_PT_CONCEAL_PIP |
+	      VM_EXIT_CLEAR_IA32_RTIT_CTL;
+	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS,
+				&_vmexit_control) < 0)
+		return -EIO;
+
+	min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING;
+	opt = PIN_BASED_VIRTUAL_NMIS | PIN_BASED_POSTED_INTR |
+		 PIN_BASED_VMX_PREEMPTION_TIMER;
+	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS,
+				&_pin_based_exec_control) < 0)
+		return -EIO;
+
+	if (cpu_has_broken_vmx_preemption_timer())
+		_pin_based_exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
+	if (!(_cpu_based_2nd_exec_control &
+		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY))
+		_pin_based_exec_control &= ~PIN_BASED_POSTED_INTR;
+
+	min = VM_ENTRY_LOAD_DEBUG_CONTROLS;
+	opt = VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |
+	      VM_ENTRY_LOAD_IA32_PAT |
+	      VM_ENTRY_LOAD_IA32_EFER |
+	      VM_ENTRY_LOAD_BNDCFGS |
+	      VM_ENTRY_PT_CONCEAL_PIP |
+	      VM_ENTRY_LOAD_IA32_RTIT_CTL;
+	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS,
+				&_vmentry_control) < 0)
+		return -EIO;
+
+	/*
+	 * Some cpus support VM_{ENTRY,EXIT}_IA32_PERF_GLOBAL_CTRL but they
+	 * can't be used due to an errata where VM Exit may incorrectly clear
+	 * IA32_PERF_GLOBAL_CTRL[34:32].  Workaround the errata by using the
+	 * MSR load mechanism to switch IA32_PERF_GLOBAL_CTRL.
+	 */
+	if (boot_cpu_data.x86 == 0x6) {
+		switch (boot_cpu_data.x86_model) {
+		case 26: /* AAK155 */
+		case 30: /* AAP115 */
+		case 37: /* AAT100 */
+		case 44: /* BC86,AAY89,BD102 */
+		case 46: /* BA97 */
+			_vmexit_control &= ~VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL;
+			_vmexit_control &= ~VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL;
+			pr_warn_once("kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL "
+					"does not work properly. Using workaround\n");
+			break;
+		default:
+			break;
+		}
+	}
+
+
+	rdmsr(MSR_IA32_VMX_BASIC, vmx_msr_low, vmx_msr_high);
+
+	/* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */
+	if ((vmx_msr_high & 0x1fff) > PAGE_SIZE)
+		return -EIO;
+
+#ifdef CONFIG_X86_64
+	/* IA-32 SDM Vol 3B: 64-bit CPUs always have VMX_BASIC_MSR[48]==0. */
+	if (vmx_msr_high & (1u<<16))
+		return -EIO;
+#endif
+
+	/* Require Write-Back (WB) memory type for VMCS accesses. */
+	if (((vmx_msr_high >> 18) & 15) != 6)
+		return -EIO;
+
+	vmcs_conf->size = vmx_msr_high & 0x1fff;
+	vmcs_conf->order = get_order(vmcs_conf->size);
+	vmcs_conf->basic_cap = vmx_msr_high & ~0x1fff;
+
+	vmcs_conf->revision_id = vmx_msr_low;
+
+	vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control;
+	vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control;
+	vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control;
+	vmcs_conf->vmexit_ctrl         = _vmexit_control;
+	vmcs_conf->vmentry_ctrl        = _vmentry_control;
+
+	if (static_branch_unlikely(&enable_evmcs))
+		evmcs_sanitize_exec_ctrls(vmcs_conf);
+
+	return 0;
+}
+
+struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu)
+{
+	int node = cpu_to_node(cpu);
+	struct page *pages;
+	struct vmcs *vmcs;
+
+	pages = __alloc_pages_node(node, GFP_KERNEL, vmcs_config.order);
+	if (!pages)
+		return NULL;
+	vmcs = page_address(pages);
+	memset(vmcs, 0, vmcs_config.size);
+
+	/* KVM supports Enlightened VMCS v1 only */
+	if (static_branch_unlikely(&enable_evmcs))
+		vmcs->hdr.revision_id = KVM_EVMCS_VERSION;
+	else
+		vmcs->hdr.revision_id = vmcs_config.revision_id;
+
+	if (shadow)
+		vmcs->hdr.shadow_vmcs = 1;
+	return vmcs;
+}
+
+void free_vmcs(struct vmcs *vmcs)
+{
+	free_pages((unsigned long)vmcs, vmcs_config.order);
+}
+
+/*
+ * Free a VMCS, but before that VMCLEAR it on the CPU where it was last loaded
+ */
+void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
+{
+	if (!loaded_vmcs->vmcs)
+		return;
+	loaded_vmcs_clear(loaded_vmcs);
+	free_vmcs(loaded_vmcs->vmcs);
+	loaded_vmcs->vmcs = NULL;
+	if (loaded_vmcs->msr_bitmap)
+		free_page((unsigned long)loaded_vmcs->msr_bitmap);
+	WARN_ON(loaded_vmcs->shadow_vmcs != NULL);
+}
+
+int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
+{
+	loaded_vmcs->vmcs = alloc_vmcs(false);
+	if (!loaded_vmcs->vmcs)
+		return -ENOMEM;
+
+	loaded_vmcs->shadow_vmcs = NULL;
+	loaded_vmcs_init(loaded_vmcs);
+
+	if (cpu_has_vmx_msr_bitmap()) {
+		loaded_vmcs->msr_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
+		if (!loaded_vmcs->msr_bitmap)
+			goto out_vmcs;
+		memset(loaded_vmcs->msr_bitmap, 0xff, PAGE_SIZE);
+
+		if (IS_ENABLED(CONFIG_HYPERV) &&
+		    static_branch_unlikely(&enable_evmcs) &&
+		    (ms_hyperv.nested_features & HV_X64_NESTED_MSR_BITMAP)) {
+			struct hv_enlightened_vmcs *evmcs =
+				(struct hv_enlightened_vmcs *)loaded_vmcs->vmcs;
+
+			evmcs->hv_enlightenments_control.msr_bitmap = 1;
+		}
+	}
+
+	memset(&loaded_vmcs->host_state, 0, sizeof(struct vmcs_host_state));
+
+	return 0;
+
+out_vmcs:
+	free_loaded_vmcs(loaded_vmcs);
+	return -ENOMEM;
+}
+
+static void free_kvm_area(void)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		free_vmcs(per_cpu(vmxarea, cpu));
+		per_cpu(vmxarea, cpu) = NULL;
+	}
+}
+
+static __init int alloc_kvm_area(void)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		struct vmcs *vmcs;
+
+		vmcs = alloc_vmcs_cpu(false, cpu);
+		if (!vmcs) {
+			free_kvm_area();
+			return -ENOMEM;
+		}
+
+		/*
+		 * When eVMCS is enabled, alloc_vmcs_cpu() sets
+		 * vmcs->revision_id to KVM_EVMCS_VERSION instead of
+		 * revision_id reported by MSR_IA32_VMX_BASIC.
+		 *
+		 * However, even though not explictly documented by
+		 * TLFS, VMXArea passed as VMXON argument should
+		 * still be marked with revision_id reported by
+		 * physical CPU.
+		 */
+		if (static_branch_unlikely(&enable_evmcs))
+			vmcs->hdr.revision_id = vmcs_config.revision_id;
+
+		per_cpu(vmxarea, cpu) = vmcs;
+	}
+	return 0;
+}
+
+static void fix_pmode_seg(struct kvm_vcpu *vcpu, int seg,
+		struct kvm_segment *save)
+{
+	if (!emulate_invalid_guest_state) {
+		/*
+		 * CS and SS RPL should be equal during guest entry according
+		 * to VMX spec, but in reality it is not always so. Since vcpu
+		 * is in the middle of the transition from real mode to
+		 * protected mode it is safe to assume that RPL 0 is a good
+		 * default value.
+		 */
+		if (seg == VCPU_SREG_CS || seg == VCPU_SREG_SS)
+			save->selector &= ~SEGMENT_RPL_MASK;
+		save->dpl = save->selector & SEGMENT_RPL_MASK;
+		save->s = 1;
+	}
+	vmx_set_segment(vcpu, save, seg);
+}
+
+static void enter_pmode(struct kvm_vcpu *vcpu)
+{
+	unsigned long flags;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	/*
+	 * Update real mode segment cache. It may be not up-to-date if sement
+	 * register was written while vcpu was in a guest mode.
+	 */
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
+
+	vmx->rmode.vm86_active = 0;
+
+	vmx_segment_cache_clear(vmx);
+
+	vmx_set_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
+
+	flags = vmcs_readl(GUEST_RFLAGS);
+	flags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
+	flags |= vmx->rmode.save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
+	vmcs_writel(GUEST_RFLAGS, flags);
+
+	vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) |
+			(vmcs_readl(CR4_READ_SHADOW) & X86_CR4_VME));
+
+	update_exception_bitmap(vcpu);
+
+	fix_pmode_seg(vcpu, VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
+	fix_pmode_seg(vcpu, VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
+	fix_pmode_seg(vcpu, VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
+	fix_pmode_seg(vcpu, VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
+	fix_pmode_seg(vcpu, VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
+	fix_pmode_seg(vcpu, VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
+}
+
+static void fix_rmode_seg(int seg, struct kvm_segment *save)
+{
+	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
+	struct kvm_segment var = *save;
+
+	var.dpl = 0x3;
+	if (seg == VCPU_SREG_CS)
+		var.type = 0x3;
+
+	if (!emulate_invalid_guest_state) {
+		var.selector = var.base >> 4;
+		var.base = var.base & 0xffff0;
+		var.limit = 0xffff;
+		var.g = 0;
+		var.db = 0;
+		var.present = 1;
+		var.s = 1;
+		var.l = 0;
+		var.unusable = 0;
+		var.type = 0x3;
+		var.avl = 0;
+		if (save->base & 0xf)
+			printk_once(KERN_WARNING "kvm: segment base is not "
+					"paragraph aligned when entering "
+					"protected mode (seg=%d)", seg);
+	}
+
+	vmcs_write16(sf->selector, var.selector);
+	vmcs_writel(sf->base, var.base);
+	vmcs_write32(sf->limit, var.limit);
+	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
+}
+
+static void enter_rmode(struct kvm_vcpu *vcpu)
+{
+	unsigned long flags;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct kvm_vmx *kvm_vmx = to_kvm_vmx(vcpu->kvm);
+
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
+	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
+
+	vmx->rmode.vm86_active = 1;
+
+	/*
+	 * Very old userspace does not call KVM_SET_TSS_ADDR before entering
+	 * vcpu. Warn the user that an update is overdue.
+	 */
+	if (!kvm_vmx->tss_addr)
+		printk_once(KERN_WARNING "kvm: KVM_SET_TSS_ADDR need to be "
+			     "called before entering vcpu\n");
+
+	vmx_segment_cache_clear(vmx);
+
+	vmcs_writel(GUEST_TR_BASE, kvm_vmx->tss_addr);
+	vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
+	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
+
+	flags = vmcs_readl(GUEST_RFLAGS);
+	vmx->rmode.save_rflags = flags;
+
+	flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
+
+	vmcs_writel(GUEST_RFLAGS, flags);
+	vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME);
+	update_exception_bitmap(vcpu);
+
+	fix_rmode_seg(VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
+	fix_rmode_seg(VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
+	fix_rmode_seg(VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
+	fix_rmode_seg(VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
+	fix_rmode_seg(VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
+	fix_rmode_seg(VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
+
+	kvm_mmu_reset_context(vcpu);
+}
+
+void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER);
+
+	if (!msr)
+		return;
+
+	vcpu->arch.efer = efer;
+	if (efer & EFER_LMA) {
+		vm_entry_controls_setbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
+		msr->data = efer;
+	} else {
+		vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
+
+		msr->data = efer & ~EFER_LME;
+	}
+	setup_msrs(vmx);
+}
+
+#ifdef CONFIG_X86_64
+
+static void enter_lmode(struct kvm_vcpu *vcpu)
+{
+	u32 guest_tr_ar;
+
+	vmx_segment_cache_clear(to_vmx(vcpu));
+
+	guest_tr_ar = vmcs_read32(GUEST_TR_AR_BYTES);
+	if ((guest_tr_ar & VMX_AR_TYPE_MASK) != VMX_AR_TYPE_BUSY_64_TSS) {
+		pr_debug_ratelimited("%s: tss fixup for long mode. \n",
+				     __func__);
+		vmcs_write32(GUEST_TR_AR_BYTES,
+			     (guest_tr_ar & ~VMX_AR_TYPE_MASK)
+			     | VMX_AR_TYPE_BUSY_64_TSS);
+	}
+	vmx_set_efer(vcpu, vcpu->arch.efer | EFER_LMA);
+}
+
+static void exit_lmode(struct kvm_vcpu *vcpu)
+{
+	vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
+	vmx_set_efer(vcpu, vcpu->arch.efer & ~EFER_LMA);
+}
+
+#endif
+
+static void vmx_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t addr)
+{
+	int vpid = to_vmx(vcpu)->vpid;
+
+	if (!vpid_sync_vcpu_addr(vpid, addr))
+		vpid_sync_context(vpid);
+
+	/*
+	 * If VPIDs are not supported or enabled, then the above is a no-op.
+	 * But we don't really need a TLB flush in that case anyway, because
+	 * each VM entry/exit includes an implicit flush when VPID is 0.
+	 */
+}
+
+static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu)
+{
+	ulong cr0_guest_owned_bits = vcpu->arch.cr0_guest_owned_bits;
+
+	vcpu->arch.cr0 &= ~cr0_guest_owned_bits;
+	vcpu->arch.cr0 |= vmcs_readl(GUEST_CR0) & cr0_guest_owned_bits;
+}
+
+static void vmx_decache_cr3(struct kvm_vcpu *vcpu)
+{
+	if (enable_unrestricted_guest || (enable_ept && is_paging(vcpu)))
+		vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
+	__set_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail);
+}
+
+static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
+{
+	ulong cr4_guest_owned_bits = vcpu->arch.cr4_guest_owned_bits;
+
+	vcpu->arch.cr4 &= ~cr4_guest_owned_bits;
+	vcpu->arch.cr4 |= vmcs_readl(GUEST_CR4) & cr4_guest_owned_bits;
+}
+
+static void ept_load_pdptrs(struct kvm_vcpu *vcpu)
+{
+	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
+
+	if (!test_bit(VCPU_EXREG_PDPTR,
+		      (unsigned long *)&vcpu->arch.regs_dirty))
+		return;
+
+	if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
+		vmcs_write64(GUEST_PDPTR0, mmu->pdptrs[0]);
+		vmcs_write64(GUEST_PDPTR1, mmu->pdptrs[1]);
+		vmcs_write64(GUEST_PDPTR2, mmu->pdptrs[2]);
+		vmcs_write64(GUEST_PDPTR3, mmu->pdptrs[3]);
+	}
+}
+
+void ept_save_pdptrs(struct kvm_vcpu *vcpu)
+{
+	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
+
+	if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
+		mmu->pdptrs[0] = vmcs_read64(GUEST_PDPTR0);
+		mmu->pdptrs[1] = vmcs_read64(GUEST_PDPTR1);
+		mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
+		mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
+	}
+
+	__set_bit(VCPU_EXREG_PDPTR,
+		  (unsigned long *)&vcpu->arch.regs_avail);
+	__set_bit(VCPU_EXREG_PDPTR,
+		  (unsigned long *)&vcpu->arch.regs_dirty);
+}
+
+static void ept_update_paging_mode_cr0(unsigned long *hw_cr0,
+					unsigned long cr0,
+					struct kvm_vcpu *vcpu)
+{
+	if (!test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail))
+		vmx_decache_cr3(vcpu);
+	if (!(cr0 & X86_CR0_PG)) {
+		/* From paging/starting to nonpaging */
+		vmcs_write32(CPU_BASED_VM_EXEC_CONTROL,
+			     vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) |
+			     (CPU_BASED_CR3_LOAD_EXITING |
+			      CPU_BASED_CR3_STORE_EXITING));
+		vcpu->arch.cr0 = cr0;
+		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
+	} else if (!is_paging(vcpu)) {
+		/* From nonpaging to paging */
+		vmcs_write32(CPU_BASED_VM_EXEC_CONTROL,
+			     vmcs_read32(CPU_BASED_VM_EXEC_CONTROL) &
+			     ~(CPU_BASED_CR3_LOAD_EXITING |
+			       CPU_BASED_CR3_STORE_EXITING));
+		vcpu->arch.cr0 = cr0;
+		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
+	}
+
+	if (!(cr0 & X86_CR0_WP))
+		*hw_cr0 &= ~X86_CR0_WP;
+}
+
+void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long hw_cr0;
+
+	hw_cr0 = (cr0 & ~KVM_VM_CR0_ALWAYS_OFF);
+	if (enable_unrestricted_guest)
+		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST;
+	else {
+		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON;
+
+		if (vmx->rmode.vm86_active && (cr0 & X86_CR0_PE))
+			enter_pmode(vcpu);
+
+		if (!vmx->rmode.vm86_active && !(cr0 & X86_CR0_PE))
+			enter_rmode(vcpu);
+	}
+
+#ifdef CONFIG_X86_64
+	if (vcpu->arch.efer & EFER_LME) {
+		if (!is_paging(vcpu) && (cr0 & X86_CR0_PG))
+			enter_lmode(vcpu);
+		if (is_paging(vcpu) && !(cr0 & X86_CR0_PG))
+			exit_lmode(vcpu);
+	}
+#endif
+
+	if (enable_ept && !enable_unrestricted_guest)
+		ept_update_paging_mode_cr0(&hw_cr0, cr0, vcpu);
+
+	vmcs_writel(CR0_READ_SHADOW, cr0);
+	vmcs_writel(GUEST_CR0, hw_cr0);
+	vcpu->arch.cr0 = cr0;
+
+	/* depends on vcpu->arch.cr0 to be set to a new value */
+	vmx->emulation_required = emulation_required(vcpu);
+}
+
+static int get_ept_level(struct kvm_vcpu *vcpu)
+{
+	if (cpu_has_vmx_ept_5levels() && (cpuid_maxphyaddr(vcpu) > 48))
+		return 5;
+	return 4;
+}
+
+u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa)
+{
+	u64 eptp = VMX_EPTP_MT_WB;
+
+	eptp |= (get_ept_level(vcpu) == 5) ? VMX_EPTP_PWL_5 : VMX_EPTP_PWL_4;
+
+	if (enable_ept_ad_bits &&
+	    (!is_guest_mode(vcpu) || nested_ept_ad_enabled(vcpu)))
+		eptp |= VMX_EPTP_AD_ENABLE_BIT;
+	eptp |= (root_hpa & PAGE_MASK);
+
+	return eptp;
+}
+
+void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
+{
+	struct kvm *kvm = vcpu->kvm;
+	unsigned long guest_cr3;
+	u64 eptp;
+
+	guest_cr3 = cr3;
+	if (enable_ept) {
+		eptp = construct_eptp(vcpu, cr3);
+		vmcs_write64(EPT_POINTER, eptp);
+
+		if (kvm_x86_ops->tlb_remote_flush) {
+			spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+			to_vmx(vcpu)->ept_pointer = eptp;
+			to_kvm_vmx(kvm)->ept_pointers_match
+				= EPT_POINTERS_CHECK;
+			spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+		}
+
+		if (enable_unrestricted_guest || is_paging(vcpu) ||
+		    is_guest_mode(vcpu))
+			guest_cr3 = kvm_read_cr3(vcpu);
+		else
+			guest_cr3 = to_kvm_vmx(kvm)->ept_identity_map_addr;
+		ept_load_pdptrs(vcpu);
+	}
+
+	vmcs_writel(GUEST_CR3, guest_cr3);
+}
+
+int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+	/*
+	 * Pass through host's Machine Check Enable value to hw_cr4, which
+	 * is in force while we are in guest mode.  Do not let guests control
+	 * this bit, even if host CR4.MCE == 0.
+	 */
+	unsigned long hw_cr4;
+
+	hw_cr4 = (cr4_read_shadow() & X86_CR4_MCE) | (cr4 & ~X86_CR4_MCE);
+	if (enable_unrestricted_guest)
+		hw_cr4 |= KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST;
+	else if (to_vmx(vcpu)->rmode.vm86_active)
+		hw_cr4 |= KVM_RMODE_VM_CR4_ALWAYS_ON;
+	else
+		hw_cr4 |= KVM_PMODE_VM_CR4_ALWAYS_ON;
+
+	if (!boot_cpu_has(X86_FEATURE_UMIP) && vmx_umip_emulated()) {
+		if (cr4 & X86_CR4_UMIP) {
+			vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
+				SECONDARY_EXEC_DESC);
+			hw_cr4 &= ~X86_CR4_UMIP;
+		} else if (!is_guest_mode(vcpu) ||
+			!nested_cpu_has2(get_vmcs12(vcpu), SECONDARY_EXEC_DESC))
+			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
+					SECONDARY_EXEC_DESC);
+	}
+
+	if (cr4 & X86_CR4_VMXE) {
+		/*
+		 * To use VMXON (and later other VMX instructions), a guest
+		 * must first be able to turn on cr4.VMXE (see handle_vmon()).
+		 * So basically the check on whether to allow nested VMX
+		 * is here.  We operate under the default treatment of SMM,
+		 * so VMX cannot be enabled under SMM.
+		 */
+		if (!nested_vmx_allowed(vcpu) || is_smm(vcpu))
+			return 1;
+	}
+
+	if (to_vmx(vcpu)->nested.vmxon && !nested_cr4_valid(vcpu, cr4))
+		return 1;
+
+	vcpu->arch.cr4 = cr4;
+
+	if (!enable_unrestricted_guest) {
+		if (enable_ept) {
+			if (!is_paging(vcpu)) {
+				hw_cr4 &= ~X86_CR4_PAE;
+				hw_cr4 |= X86_CR4_PSE;
+			} else if (!(cr4 & X86_CR4_PAE)) {
+				hw_cr4 &= ~X86_CR4_PAE;
+			}
+		}
+
+		/*
+		 * SMEP/SMAP/PKU is disabled if CPU is in non-paging mode in
+		 * hardware.  To emulate this behavior, SMEP/SMAP/PKU needs
+		 * to be manually disabled when guest switches to non-paging
+		 * mode.
+		 *
+		 * If !enable_unrestricted_guest, the CPU is always running
+		 * with CR0.PG=1 and CR4 needs to be modified.
+		 * If enable_unrestricted_guest, the CPU automatically
+		 * disables SMEP/SMAP/PKU when the guest sets CR0.PG=0.
+		 */
+		if (!is_paging(vcpu))
+			hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE);
+	}
+
+	vmcs_writel(CR4_READ_SHADOW, cr4);
+	vmcs_writel(GUEST_CR4, hw_cr4);
+	return 0;
+}
+
+void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 ar;
+
+	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
+		*var = vmx->rmode.segs[seg];
+		if (seg == VCPU_SREG_TR
+		    || var->selector == vmx_read_guest_seg_selector(vmx, seg))
+			return;
+		var->base = vmx_read_guest_seg_base(vmx, seg);
+		var->selector = vmx_read_guest_seg_selector(vmx, seg);
+		return;
+	}
+	var->base = vmx_read_guest_seg_base(vmx, seg);
+	var->limit = vmx_read_guest_seg_limit(vmx, seg);
+	var->selector = vmx_read_guest_seg_selector(vmx, seg);
+	ar = vmx_read_guest_seg_ar(vmx, seg);
+	var->unusable = (ar >> 16) & 1;
+	var->type = ar & 15;
+	var->s = (ar >> 4) & 1;
+	var->dpl = (ar >> 5) & 3;
+	/*
+	 * Some userspaces do not preserve unusable property. Since usable
+	 * segment has to be present according to VMX spec we can use present
+	 * property to amend userspace bug by making unusable segment always
+	 * nonpresent. vmx_segment_access_rights() already marks nonpresent
+	 * segment as unusable.
+	 */
+	var->present = !var->unusable;
+	var->avl = (ar >> 12) & 1;
+	var->l = (ar >> 13) & 1;
+	var->db = (ar >> 14) & 1;
+	var->g = (ar >> 15) & 1;
+}
+
+static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
+{
+	struct kvm_segment s;
+
+	if (to_vmx(vcpu)->rmode.vm86_active) {
+		vmx_get_segment(vcpu, &s, seg);
+		return s.base;
+	}
+	return vmx_read_guest_seg_base(to_vmx(vcpu), seg);
+}
+
+int vmx_get_cpl(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (unlikely(vmx->rmode.vm86_active))
+		return 0;
+	else {
+		int ar = vmx_read_guest_seg_ar(vmx, VCPU_SREG_SS);
+		return VMX_AR_DPL(ar);
+	}
+}
+
+static u32 vmx_segment_access_rights(struct kvm_segment *var)
+{
+	u32 ar;
+
+	if (var->unusable || !var->present)
+		ar = 1 << 16;
+	else {
+		ar = var->type & 15;
+		ar |= (var->s & 1) << 4;
+		ar |= (var->dpl & 3) << 5;
+		ar |= (var->present & 1) << 7;
+		ar |= (var->avl & 1) << 12;
+		ar |= (var->l & 1) << 13;
+		ar |= (var->db & 1) << 14;
+		ar |= (var->g & 1) << 15;
+	}
+
+	return ar;
+}
+
+void vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
+
+	vmx_segment_cache_clear(vmx);
+
+	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
+		vmx->rmode.segs[seg] = *var;
+		if (seg == VCPU_SREG_TR)
+			vmcs_write16(sf->selector, var->selector);
+		else if (var->s)
+			fix_rmode_seg(seg, &vmx->rmode.segs[seg]);
+		goto out;
+	}
+
+	vmcs_writel(sf->base, var->base);
+	vmcs_write32(sf->limit, var->limit);
+	vmcs_write16(sf->selector, var->selector);
+
+	/*
+	 *   Fix the "Accessed" bit in AR field of segment registers for older
+	 * qemu binaries.
+	 *   IA32 arch specifies that at the time of processor reset the
+	 * "Accessed" bit in the AR field of segment registers is 1. And qemu
+	 * is setting it to 0 in the userland code. This causes invalid guest
+	 * state vmexit when "unrestricted guest" mode is turned on.
+	 *    Fix for this setup issue in cpu_reset is being pushed in the qemu
+	 * tree. Newer qemu binaries with that qemu fix would not need this
+	 * kvm hack.
+	 */
+	if (enable_unrestricted_guest && (seg != VCPU_SREG_LDTR))
+		var->type |= 0x1; /* Accessed */
+
+	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(var));
+
+out:
+	vmx->emulation_required = emulation_required(vcpu);
+}
+
+static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
+{
+	u32 ar = vmx_read_guest_seg_ar(to_vmx(vcpu), VCPU_SREG_CS);
+
+	*db = (ar >> 14) & 1;
+	*l = (ar >> 13) & 1;
+}
+
+static void vmx_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	dt->size = vmcs_read32(GUEST_IDTR_LIMIT);
+	dt->address = vmcs_readl(GUEST_IDTR_BASE);
+}
+
+static void vmx_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	vmcs_write32(GUEST_IDTR_LIMIT, dt->size);
+	vmcs_writel(GUEST_IDTR_BASE, dt->address);
+}
+
+static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	dt->size = vmcs_read32(GUEST_GDTR_LIMIT);
+	dt->address = vmcs_readl(GUEST_GDTR_BASE);
+}
+
+static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+	vmcs_write32(GUEST_GDTR_LIMIT, dt->size);
+	vmcs_writel(GUEST_GDTR_BASE, dt->address);
+}
+
+static bool rmode_segment_valid(struct kvm_vcpu *vcpu, int seg)
+{
+	struct kvm_segment var;
+	u32 ar;
+
+	vmx_get_segment(vcpu, &var, seg);
+	var.dpl = 0x3;
+	if (seg == VCPU_SREG_CS)
+		var.type = 0x3;
+	ar = vmx_segment_access_rights(&var);
+
+	if (var.base != (var.selector << 4))
+		return false;
+	if (var.limit != 0xffff)
+		return false;
+	if (ar != 0xf3)
+		return false;
+
+	return true;
+}
+
+static bool code_segment_valid(struct kvm_vcpu *vcpu)
+{
+	struct kvm_segment cs;
+	unsigned int cs_rpl;
+
+	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
+	cs_rpl = cs.selector & SEGMENT_RPL_MASK;
+
+	if (cs.unusable)
+		return false;
+	if (~cs.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_ACCESSES_MASK))
+		return false;
+	if (!cs.s)
+		return false;
+	if (cs.type & VMX_AR_TYPE_WRITEABLE_MASK) {
+		if (cs.dpl > cs_rpl)
+			return false;
+	} else {
+		if (cs.dpl != cs_rpl)
+			return false;
+	}
+	if (!cs.present)
+		return false;
+
+	/* TODO: Add Reserved field check, this'll require a new member in the kvm_segment_field structure */
+	return true;
+}
+
+static bool stack_segment_valid(struct kvm_vcpu *vcpu)
+{
+	struct kvm_segment ss;
+	unsigned int ss_rpl;
+
+	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
+	ss_rpl = ss.selector & SEGMENT_RPL_MASK;
+
+	if (ss.unusable)
+		return true;
+	if (ss.type != 3 && ss.type != 7)
+		return false;
+	if (!ss.s)
+		return false;
+	if (ss.dpl != ss_rpl) /* DPL != RPL */
+		return false;
+	if (!ss.present)
+		return false;
+
+	return true;
+}
+
+static bool data_segment_valid(struct kvm_vcpu *vcpu, int seg)
+{
+	struct kvm_segment var;
+	unsigned int rpl;
+
+	vmx_get_segment(vcpu, &var, seg);
+	rpl = var.selector & SEGMENT_RPL_MASK;
+
+	if (var.unusable)
+		return true;
+	if (!var.s)
+		return false;
+	if (!var.present)
+		return false;
+	if (~var.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_WRITEABLE_MASK)) {
+		if (var.dpl < rpl) /* DPL < RPL */
+			return false;
+	}
+
+	/* TODO: Add other members to kvm_segment_field to allow checking for other access
+	 * rights flags
+	 */
+	return true;
+}
+
+static bool tr_valid(struct kvm_vcpu *vcpu)
+{
+	struct kvm_segment tr;
+
+	vmx_get_segment(vcpu, &tr, VCPU_SREG_TR);
+
+	if (tr.unusable)
+		return false;
+	if (tr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
+		return false;
+	if (tr.type != 3 && tr.type != 11) /* TODO: Check if guest is in IA32e mode */
+		return false;
+	if (!tr.present)
+		return false;
+
+	return true;
+}
+
+static bool ldtr_valid(struct kvm_vcpu *vcpu)
+{
+	struct kvm_segment ldtr;
+
+	vmx_get_segment(vcpu, &ldtr, VCPU_SREG_LDTR);
+
+	if (ldtr.unusable)
+		return true;
+	if (ldtr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
+		return false;
+	if (ldtr.type != 2)
+		return false;
+	if (!ldtr.present)
+		return false;
+
+	return true;
+}
+
+static bool cs_ss_rpl_check(struct kvm_vcpu *vcpu)
+{
+	struct kvm_segment cs, ss;
+
+	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
+	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
+
+	return ((cs.selector & SEGMENT_RPL_MASK) ==
+		 (ss.selector & SEGMENT_RPL_MASK));
+}
+
+/*
+ * Check if guest state is valid. Returns true if valid, false if
+ * not.
+ * We assume that registers are always usable
+ */
+static bool guest_state_valid(struct kvm_vcpu *vcpu)
+{
+	if (enable_unrestricted_guest)
+		return true;
+
+	/* real mode guest state checks */
+	if (!is_protmode(vcpu) || (vmx_get_rflags(vcpu) & X86_EFLAGS_VM)) {
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_CS))
+			return false;
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_SS))
+			return false;
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_DS))
+			return false;
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_ES))
+			return false;
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_FS))
+			return false;
+		if (!rmode_segment_valid(vcpu, VCPU_SREG_GS))
+			return false;
+	} else {
+	/* protected mode guest state checks */
+		if (!cs_ss_rpl_check(vcpu))
+			return false;
+		if (!code_segment_valid(vcpu))
+			return false;
+		if (!stack_segment_valid(vcpu))
+			return false;
+		if (!data_segment_valid(vcpu, VCPU_SREG_DS))
+			return false;
+		if (!data_segment_valid(vcpu, VCPU_SREG_ES))
+			return false;
+		if (!data_segment_valid(vcpu, VCPU_SREG_FS))
+			return false;
+		if (!data_segment_valid(vcpu, VCPU_SREG_GS))
+			return false;
+		if (!tr_valid(vcpu))
+			return false;
+		if (!ldtr_valid(vcpu))
+			return false;
+	}
+	/* TODO:
+	 * - Add checks on RIP
+	 * - Add checks on RFLAGS
+	 */
+
+	return true;
+}
+
+static int init_rmode_tss(struct kvm *kvm)
+{
+	gfn_t fn;
+	u16 data = 0;
+	int idx, r;
+
+	idx = srcu_read_lock(&kvm->srcu);
+	fn = to_kvm_vmx(kvm)->tss_addr >> PAGE_SHIFT;
+	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
+	if (r < 0)
+		goto out;
+	data = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE;
+	r = kvm_write_guest_page(kvm, fn++, &data,
+			TSS_IOPB_BASE_OFFSET, sizeof(u16));
+	if (r < 0)
+		goto out;
+	r = kvm_clear_guest_page(kvm, fn++, 0, PAGE_SIZE);
+	if (r < 0)
+		goto out;
+	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
+	if (r < 0)
+		goto out;
+	data = ~0;
+	r = kvm_write_guest_page(kvm, fn, &data,
+				 RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1,
+				 sizeof(u8));
+out:
+	srcu_read_unlock(&kvm->srcu, idx);
+	return r;
+}
+
+static int init_rmode_identity_map(struct kvm *kvm)
+{
+	struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
+	int i, idx, r = 0;
+	kvm_pfn_t identity_map_pfn;
+	u32 tmp;
+
+	/* Protect kvm_vmx->ept_identity_pagetable_done. */
+	mutex_lock(&kvm->slots_lock);
+
+	if (likely(kvm_vmx->ept_identity_pagetable_done))
+		goto out2;
+
+	if (!kvm_vmx->ept_identity_map_addr)
+		kvm_vmx->ept_identity_map_addr = VMX_EPT_IDENTITY_PAGETABLE_ADDR;
+	identity_map_pfn = kvm_vmx->ept_identity_map_addr >> PAGE_SHIFT;
+
+	r = __x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT,
+				    kvm_vmx->ept_identity_map_addr, PAGE_SIZE);
+	if (r < 0)
+		goto out2;
+
+	idx = srcu_read_lock(&kvm->srcu);
+	r = kvm_clear_guest_page(kvm, identity_map_pfn, 0, PAGE_SIZE);
+	if (r < 0)
+		goto out;
+	/* Set up identity-mapping pagetable for EPT in real mode */
+	for (i = 0; i < PT32_ENT_PER_PAGE; i++) {
+		tmp = (i << 22) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
+			_PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_PSE);
+		r = kvm_write_guest_page(kvm, identity_map_pfn,
+				&tmp, i * sizeof(tmp), sizeof(tmp));
+		if (r < 0)
+			goto out;
+	}
+	kvm_vmx->ept_identity_pagetable_done = true;
+
+out:
+	srcu_read_unlock(&kvm->srcu, idx);
+
+out2:
+	mutex_unlock(&kvm->slots_lock);
+	return r;
+}
+
+static void seg_setup(int seg)
+{
+	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
+	unsigned int ar;
+
+	vmcs_write16(sf->selector, 0);
+	vmcs_writel(sf->base, 0);
+	vmcs_write32(sf->limit, 0xffff);
+	ar = 0x93;
+	if (seg == VCPU_SREG_CS)
+		ar |= 0x08; /* code segment */
+
+	vmcs_write32(sf->ar_bytes, ar);
+}
+
+static int alloc_apic_access_page(struct kvm *kvm)
+{
+	struct page *page;
+	int r = 0;
+
+	mutex_lock(&kvm->slots_lock);
+	if (kvm->arch.apic_access_page_done)
+		goto out;
+	r = __x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT,
+				    APIC_DEFAULT_PHYS_BASE, PAGE_SIZE);
+	if (r)
+		goto out;
+
+	page = gfn_to_page(kvm, APIC_DEFAULT_PHYS_BASE >> PAGE_SHIFT);
+	if (is_error_page(page)) {
+		r = -EFAULT;
+		goto out;
+	}
+
+	/*
+	 * Do not pin the page in memory, so that memory hot-unplug
+	 * is able to migrate it.
+	 */
+	put_page(page);
+	kvm->arch.apic_access_page_done = true;
+out:
+	mutex_unlock(&kvm->slots_lock);
+	return r;
+}
+
+int allocate_vpid(void)
+{
+	int vpid;
+
+	if (!enable_vpid)
+		return 0;
+	spin_lock(&vmx_vpid_lock);
+	vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
+	if (vpid < VMX_NR_VPIDS)
+		__set_bit(vpid, vmx_vpid_bitmap);
+	else
+		vpid = 0;
+	spin_unlock(&vmx_vpid_lock);
+	return vpid;
+}
+
+void free_vpid(int vpid)
+{
+	if (!enable_vpid || vpid == 0)
+		return;
+	spin_lock(&vmx_vpid_lock);
+	__clear_bit(vpid, vmx_vpid_bitmap);
+	spin_unlock(&vmx_vpid_lock);
+}
+
+static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
+							  u32 msr, int type)
+{
+	int f = sizeof(unsigned long);
+
+	if (!cpu_has_vmx_msr_bitmap())
+		return;
+
+	if (static_branch_unlikely(&enable_evmcs))
+		evmcs_touch_msr_bitmap();
+
+	/*
+	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
+	 * have the write-low and read-high bitmap offsets the wrong way round.
+	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
+	 */
+	if (msr <= 0x1fff) {
+		if (type & MSR_TYPE_R)
+			/* read-low */
+			__clear_bit(msr, msr_bitmap + 0x000 / f);
+
+		if (type & MSR_TYPE_W)
+			/* write-low */
+			__clear_bit(msr, msr_bitmap + 0x800 / f);
+
+	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
+		msr &= 0x1fff;
+		if (type & MSR_TYPE_R)
+			/* read-high */
+			__clear_bit(msr, msr_bitmap + 0x400 / f);
+
+		if (type & MSR_TYPE_W)
+			/* write-high */
+			__clear_bit(msr, msr_bitmap + 0xc00 / f);
+
+	}
+}
+
+static __always_inline void vmx_enable_intercept_for_msr(unsigned long *msr_bitmap,
+							 u32 msr, int type)
+{
+	int f = sizeof(unsigned long);
+
+	if (!cpu_has_vmx_msr_bitmap())
+		return;
+
+	if (static_branch_unlikely(&enable_evmcs))
+		evmcs_touch_msr_bitmap();
+
+	/*
+	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
+	 * have the write-low and read-high bitmap offsets the wrong way round.
+	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
+	 */
+	if (msr <= 0x1fff) {
+		if (type & MSR_TYPE_R)
+			/* read-low */
+			__set_bit(msr, msr_bitmap + 0x000 / f);
+
+		if (type & MSR_TYPE_W)
+			/* write-low */
+			__set_bit(msr, msr_bitmap + 0x800 / f);
+
+	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
+		msr &= 0x1fff;
+		if (type & MSR_TYPE_R)
+			/* read-high */
+			__set_bit(msr, msr_bitmap + 0x400 / f);
+
+		if (type & MSR_TYPE_W)
+			/* write-high */
+			__set_bit(msr, msr_bitmap + 0xc00 / f);
+
+	}
+}
+
+static __always_inline void vmx_set_intercept_for_msr(unsigned long *msr_bitmap,
+			     			      u32 msr, int type, bool value)
+{
+	if (value)
+		vmx_enable_intercept_for_msr(msr_bitmap, msr, type);
+	else
+		vmx_disable_intercept_for_msr(msr_bitmap, msr, type);
+}
+
+static u8 vmx_msr_bitmap_mode(struct kvm_vcpu *vcpu)
+{
+	u8 mode = 0;
+
+	if (cpu_has_secondary_exec_ctrls() &&
+	    (vmcs_read32(SECONDARY_VM_EXEC_CONTROL) &
+	     SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE)) {
+		mode |= MSR_BITMAP_MODE_X2APIC;
+		if (enable_apicv && kvm_vcpu_apicv_active(vcpu))
+			mode |= MSR_BITMAP_MODE_X2APIC_APICV;
+	}
+
+	return mode;
+}
+
+static void vmx_update_msr_bitmap_x2apic(unsigned long *msr_bitmap,
+					 u8 mode)
+{
+	int msr;
+
+	for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
+		unsigned word = msr / BITS_PER_LONG;
+		msr_bitmap[word] = (mode & MSR_BITMAP_MODE_X2APIC_APICV) ? 0 : ~0;
+		msr_bitmap[word + (0x800 / sizeof(long))] = ~0;
+	}
+
+	if (mode & MSR_BITMAP_MODE_X2APIC) {
+		/*
+		 * TPR reads and writes can be virtualized even if virtual interrupt
+		 * delivery is not in use.
+		 */
+		vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TASKPRI), MSR_TYPE_RW);
+		if (mode & MSR_BITMAP_MODE_X2APIC_APICV) {
+			vmx_enable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TMCCT), MSR_TYPE_R);
+			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_EOI), MSR_TYPE_W);
+			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_SELF_IPI), MSR_TYPE_W);
+		}
+	}
+}
+
+void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
+	u8 mode = vmx_msr_bitmap_mode(vcpu);
+	u8 changed = mode ^ vmx->msr_bitmap_mode;
+
+	if (!changed)
+		return;
+
+	if (changed & (MSR_BITMAP_MODE_X2APIC | MSR_BITMAP_MODE_X2APIC_APICV))
+		vmx_update_msr_bitmap_x2apic(msr_bitmap, mode);
+
+	vmx->msr_bitmap_mode = mode;
+}
+
+void pt_update_intercept_for_msr(struct vcpu_vmx *vmx)
+{
+	unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
+	bool flag = !(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN);
+	u32 i;
+
+	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_STATUS,
+							MSR_TYPE_RW, flag);
+	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_OUTPUT_BASE,
+							MSR_TYPE_RW, flag);
+	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_OUTPUT_MASK,
+							MSR_TYPE_RW, flag);
+	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_CR3_MATCH,
+							MSR_TYPE_RW, flag);
+	for (i = 0; i < vmx->pt_desc.addr_range; i++) {
+		vmx_set_intercept_for_msr(msr_bitmap,
+			MSR_IA32_RTIT_ADDR0_A + i * 2, MSR_TYPE_RW, flag);
+		vmx_set_intercept_for_msr(msr_bitmap,
+			MSR_IA32_RTIT_ADDR0_B + i * 2, MSR_TYPE_RW, flag);
+	}
+}
+
+static bool vmx_get_enable_apicv(struct kvm_vcpu *vcpu)
+{
+	return enable_apicv;
+}
+
+static bool vmx_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	void *vapic_page;
+	u32 vppr;
+	int rvi;
+
+	if (WARN_ON_ONCE(!is_guest_mode(vcpu)) ||
+		!nested_cpu_has_vid(get_vmcs12(vcpu)) ||
+		WARN_ON_ONCE(!vmx->nested.virtual_apic_page))
+		return false;
+
+	rvi = vmx_get_rvi();
+
+	vapic_page = kmap(vmx->nested.virtual_apic_page);
+	vppr = *((u32 *)(vapic_page + APIC_PROCPRI));
+	kunmap(vmx->nested.virtual_apic_page);
+
+	return ((rvi & 0xf0) > (vppr & 0xf0));
+}
+
+static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
+						     bool nested)
+{
+#ifdef CONFIG_SMP
+	int pi_vec = nested ? POSTED_INTR_NESTED_VECTOR : POSTED_INTR_VECTOR;
+
+	if (vcpu->mode == IN_GUEST_MODE) {
+		/*
+		 * The vector of interrupt to be delivered to vcpu had
+		 * been set in PIR before this function.
+		 *
+		 * Following cases will be reached in this block, and
+		 * we always send a notification event in all cases as
+		 * explained below.
+		 *
+		 * Case 1: vcpu keeps in non-root mode. Sending a
+		 * notification event posts the interrupt to vcpu.
+		 *
+		 * Case 2: vcpu exits to root mode and is still
+		 * runnable. PIR will be synced to vIRR before the
+		 * next vcpu entry. Sending a notification event in
+		 * this case has no effect, as vcpu is not in root
+		 * mode.
+		 *
+		 * Case 3: vcpu exits to root mode and is blocked.
+		 * vcpu_block() has already synced PIR to vIRR and
+		 * never blocks vcpu if vIRR is not cleared. Therefore,
+		 * a blocked vcpu here does not wait for any requested
+		 * interrupts in PIR, and sending a notification event
+		 * which has no effect is safe here.
+		 */
+
+		apic->send_IPI_mask(get_cpu_mask(vcpu->cpu), pi_vec);
+		return true;
+	}
+#endif
+	return false;
+}
+
+static int vmx_deliver_nested_posted_interrupt(struct kvm_vcpu *vcpu,
+						int vector)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (is_guest_mode(vcpu) &&
+	    vector == vmx->nested.posted_intr_nv) {
+		/*
+		 * If a posted intr is not recognized by hardware,
+		 * we will accomplish it in the next vmentry.
+		 */
+		vmx->nested.pi_pending = true;
+		kvm_make_request(KVM_REQ_EVENT, vcpu);
+		/* the PIR and ON have been set by L1. */
+		if (!kvm_vcpu_trigger_posted_interrupt(vcpu, true))
+			kvm_vcpu_kick(vcpu);
+		return 0;
+	}
+	return -1;
+}
+/*
+ * Send interrupt to vcpu via posted interrupt way.
+ * 1. If target vcpu is running(non-root mode), send posted interrupt
+ * notification to vcpu and hardware will sync PIR to vIRR atomically.
+ * 2. If target vcpu isn't running(root mode), kick it to pick up the
+ * interrupt from PIR in next vmentry.
+ */
+static void vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int r;
+
+	r = vmx_deliver_nested_posted_interrupt(vcpu, vector);
+	if (!r)
+		return;
+
+	if (pi_test_and_set_pir(vector, &vmx->pi_desc))
+		return;
+
+	/* If a previous notification has sent the IPI, nothing to do.  */
+	if (pi_test_and_set_on(&vmx->pi_desc))
+		return;
+
+	if (!kvm_vcpu_trigger_posted_interrupt(vcpu, false))
+		kvm_vcpu_kick(vcpu);
+}
+
+/*
+ * Set up the vmcs's constant host-state fields, i.e., host-state fields that
+ * will not change in the lifetime of the guest.
+ * Note that host-state that does change is set elsewhere. E.g., host-state
+ * that is set differently for each CPU is set in vmx_vcpu_load(), not here.
+ */
+void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
+{
+	u32 low32, high32;
+	unsigned long tmpl;
+	struct desc_ptr dt;
+	unsigned long cr0, cr3, cr4;
+
+	cr0 = read_cr0();
+	WARN_ON(cr0 & X86_CR0_TS);
+	vmcs_writel(HOST_CR0, cr0);  /* 22.2.3 */
+
+	/*
+	 * Save the most likely value for this task's CR3 in the VMCS.
+	 * We can't use __get_current_cr3_fast() because we're not atomic.
+	 */
+	cr3 = __read_cr3();
+	vmcs_writel(HOST_CR3, cr3);		/* 22.2.3  FIXME: shadow tables */
+	vmx->loaded_vmcs->host_state.cr3 = cr3;
+
+	/* Save the most likely value for this task's CR4 in the VMCS. */
+	cr4 = cr4_read_shadow();
+	vmcs_writel(HOST_CR4, cr4);			/* 22.2.3, 22.2.5 */
+	vmx->loaded_vmcs->host_state.cr4 = cr4;
+
+	vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS);  /* 22.2.4 */
+#ifdef CONFIG_X86_64
+	/*
+	 * Load null selectors, so we can avoid reloading them in
+	 * vmx_prepare_switch_to_host(), in case userspace uses
+	 * the null selectors too (the expected case).
+	 */
+	vmcs_write16(HOST_DS_SELECTOR, 0);
+	vmcs_write16(HOST_ES_SELECTOR, 0);
+#else
+	vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
+	vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
+#endif
+	vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
+	vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8);  /* 22.2.4 */
+
+	store_idt(&dt);
+	vmcs_writel(HOST_IDTR_BASE, dt.address);   /* 22.2.4 */
+	vmx->host_idt_base = dt.address;
+
+	vmcs_writel(HOST_RIP, (unsigned long)vmx_vmexit); /* 22.2.5 */
+
+	rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
+	vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
+	rdmsrl(MSR_IA32_SYSENTER_EIP, tmpl);
+	vmcs_writel(HOST_IA32_SYSENTER_EIP, tmpl);   /* 22.2.3 */
+
+	if (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT) {
+		rdmsr(MSR_IA32_CR_PAT, low32, high32);
+		vmcs_write64(HOST_IA32_PAT, low32 | ((u64) high32 << 32));
+	}
+
+	if (cpu_has_load_ia32_efer())
+		vmcs_write64(HOST_IA32_EFER, host_efer);
+}
+
+void set_cr4_guest_host_mask(struct vcpu_vmx *vmx)
+{
+	vmx->vcpu.arch.cr4_guest_owned_bits = KVM_CR4_GUEST_OWNED_BITS;
+	if (enable_ept)
+		vmx->vcpu.arch.cr4_guest_owned_bits |= X86_CR4_PGE;
+	if (is_guest_mode(&vmx->vcpu))
+		vmx->vcpu.arch.cr4_guest_owned_bits &=
+			~get_vmcs12(&vmx->vcpu)->cr4_guest_host_mask;
+	vmcs_writel(CR4_GUEST_HOST_MASK, ~vmx->vcpu.arch.cr4_guest_owned_bits);
+}
+
+static u32 vmx_pin_based_exec_ctrl(struct vcpu_vmx *vmx)
+{
+	u32 pin_based_exec_ctrl = vmcs_config.pin_based_exec_ctrl;
+
+	if (!kvm_vcpu_apicv_active(&vmx->vcpu))
+		pin_based_exec_ctrl &= ~PIN_BASED_POSTED_INTR;
+
+	if (!enable_vnmi)
+		pin_based_exec_ctrl &= ~PIN_BASED_VIRTUAL_NMIS;
+
+	/* Enable the preemption timer dynamically */
+	pin_based_exec_ctrl &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
+	return pin_based_exec_ctrl;
+}
+
+static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx));
+	if (cpu_has_secondary_exec_ctrls()) {
+		if (kvm_vcpu_apicv_active(vcpu))
+			vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
+				      SECONDARY_EXEC_APIC_REGISTER_VIRT |
+				      SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
+		else
+			vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
+					SECONDARY_EXEC_APIC_REGISTER_VIRT |
+					SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
+	}
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmx_update_msr_bitmap(vcpu);
+}
+
+u32 vmx_exec_control(struct vcpu_vmx *vmx)
+{
+	u32 exec_control = vmcs_config.cpu_based_exec_ctrl;
+
+	if (vmx->vcpu.arch.switch_db_regs & KVM_DEBUGREG_WONT_EXIT)
+		exec_control &= ~CPU_BASED_MOV_DR_EXITING;
+
+	if (!cpu_need_tpr_shadow(&vmx->vcpu)) {
+		exec_control &= ~CPU_BASED_TPR_SHADOW;
+#ifdef CONFIG_X86_64
+		exec_control |= CPU_BASED_CR8_STORE_EXITING |
+				CPU_BASED_CR8_LOAD_EXITING;
+#endif
+	}
+	if (!enable_ept)
+		exec_control |= CPU_BASED_CR3_STORE_EXITING |
+				CPU_BASED_CR3_LOAD_EXITING  |
+				CPU_BASED_INVLPG_EXITING;
+	if (kvm_mwait_in_guest(vmx->vcpu.kvm))
+		exec_control &= ~(CPU_BASED_MWAIT_EXITING |
+				CPU_BASED_MONITOR_EXITING);
+	if (kvm_hlt_in_guest(vmx->vcpu.kvm))
+		exec_control &= ~CPU_BASED_HLT_EXITING;
+	return exec_control;
+}
+
+
+static void vmx_compute_secondary_exec_control(struct vcpu_vmx *vmx)
+{
+	struct kvm_vcpu *vcpu = &vmx->vcpu;
+
+	u32 exec_control = vmcs_config.cpu_based_2nd_exec_ctrl;
+
+	if (pt_mode == PT_MODE_SYSTEM)
+		exec_control &= ~(SECONDARY_EXEC_PT_USE_GPA | SECONDARY_EXEC_PT_CONCEAL_VMX);
+	if (!cpu_need_virtualize_apic_accesses(vcpu))
+		exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+	if (vmx->vpid == 0)
+		exec_control &= ~SECONDARY_EXEC_ENABLE_VPID;
+	if (!enable_ept) {
+		exec_control &= ~SECONDARY_EXEC_ENABLE_EPT;
+		enable_unrestricted_guest = 0;
+	}
+	if (!enable_unrestricted_guest)
+		exec_control &= ~SECONDARY_EXEC_UNRESTRICTED_GUEST;
+	if (kvm_pause_in_guest(vmx->vcpu.kvm))
+		exec_control &= ~SECONDARY_EXEC_PAUSE_LOOP_EXITING;
+	if (!kvm_vcpu_apicv_active(vcpu))
+		exec_control &= ~(SECONDARY_EXEC_APIC_REGISTER_VIRT |
+				  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
+	exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
+
+	/* SECONDARY_EXEC_DESC is enabled/disabled on writes to CR4.UMIP,
+	 * in vmx_set_cr4.  */
+	exec_control &= ~SECONDARY_EXEC_DESC;
+
+	/* SECONDARY_EXEC_SHADOW_VMCS is enabled when L1 executes VMPTRLD
+	   (handle_vmptrld).
+	   We can NOT enable shadow_vmcs here because we don't have yet
+	   a current VMCS12
+	*/
+	exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
+
+	if (!enable_pml)
+		exec_control &= ~SECONDARY_EXEC_ENABLE_PML;
+
+	if (vmx_xsaves_supported()) {
+		/* Exposing XSAVES only when XSAVE is exposed */
+		bool xsaves_enabled =
+			guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) &&
+			guest_cpuid_has(vcpu, X86_FEATURE_XSAVES);
+
+		if (!xsaves_enabled)
+			exec_control &= ~SECONDARY_EXEC_XSAVES;
+
+		if (nested) {
+			if (xsaves_enabled)
+				vmx->nested.msrs.secondary_ctls_high |=
+					SECONDARY_EXEC_XSAVES;
+			else
+				vmx->nested.msrs.secondary_ctls_high &=
+					~SECONDARY_EXEC_XSAVES;
+		}
+	}
+
+	if (vmx_rdtscp_supported()) {
+		bool rdtscp_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP);
+		if (!rdtscp_enabled)
+			exec_control &= ~SECONDARY_EXEC_RDTSCP;
+
+		if (nested) {
+			if (rdtscp_enabled)
+				vmx->nested.msrs.secondary_ctls_high |=
+					SECONDARY_EXEC_RDTSCP;
+			else
+				vmx->nested.msrs.secondary_ctls_high &=
+					~SECONDARY_EXEC_RDTSCP;
+		}
+	}
+
+	if (vmx_invpcid_supported()) {
+		/* Exposing INVPCID only when PCID is exposed */
+		bool invpcid_enabled =
+			guest_cpuid_has(vcpu, X86_FEATURE_INVPCID) &&
+			guest_cpuid_has(vcpu, X86_FEATURE_PCID);
+
+		if (!invpcid_enabled) {
+			exec_control &= ~SECONDARY_EXEC_ENABLE_INVPCID;
+			guest_cpuid_clear(vcpu, X86_FEATURE_INVPCID);
+		}
+
+		if (nested) {
+			if (invpcid_enabled)
+				vmx->nested.msrs.secondary_ctls_high |=
+					SECONDARY_EXEC_ENABLE_INVPCID;
+			else
+				vmx->nested.msrs.secondary_ctls_high &=
+					~SECONDARY_EXEC_ENABLE_INVPCID;
+		}
+	}
+
+	if (vmx_rdrand_supported()) {
+		bool rdrand_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDRAND);
+		if (rdrand_enabled)
+			exec_control &= ~SECONDARY_EXEC_RDRAND_EXITING;
+
+		if (nested) {
+			if (rdrand_enabled)
+				vmx->nested.msrs.secondary_ctls_high |=
+					SECONDARY_EXEC_RDRAND_EXITING;
+			else
+				vmx->nested.msrs.secondary_ctls_high &=
+					~SECONDARY_EXEC_RDRAND_EXITING;
+		}
+	}
+
+	if (vmx_rdseed_supported()) {
+		bool rdseed_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDSEED);
+		if (rdseed_enabled)
+			exec_control &= ~SECONDARY_EXEC_RDSEED_EXITING;
+
+		if (nested) {
+			if (rdseed_enabled)
+				vmx->nested.msrs.secondary_ctls_high |=
+					SECONDARY_EXEC_RDSEED_EXITING;
+			else
+				vmx->nested.msrs.secondary_ctls_high &=
+					~SECONDARY_EXEC_RDSEED_EXITING;
+		}
+	}
+
+	vmx->secondary_exec_control = exec_control;
+}
+
+static void ept_set_mmio_spte_mask(void)
+{
+	/*
+	 * EPT Misconfigurations can be generated if the value of bits 2:0
+	 * of an EPT paging-structure entry is 110b (write/execute).
+	 */
+	kvm_mmu_set_mmio_spte_mask(VMX_EPT_RWX_MASK,
+				   VMX_EPT_MISCONFIG_WX_VALUE);
+}
+
+#define VMX_XSS_EXIT_BITMAP 0
+
+/*
+ * Sets up the vmcs for emulated real mode.
+ */
+static void vmx_vcpu_setup(struct vcpu_vmx *vmx)
+{
+	int i;
+
+	if (nested)
+		nested_vmx_vcpu_setup();
+
+	if (cpu_has_vmx_msr_bitmap())
+		vmcs_write64(MSR_BITMAP, __pa(vmx->vmcs01.msr_bitmap));
+
+	vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */
+
+	/* Control */
+	vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, vmx_pin_based_exec_ctrl(vmx));
+	vmx->hv_deadline_tsc = -1;
+
+	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, vmx_exec_control(vmx));
+
+	if (cpu_has_secondary_exec_ctrls()) {
+		vmx_compute_secondary_exec_control(vmx);
+		vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
+			     vmx->secondary_exec_control);
+	}
+
+	if (kvm_vcpu_apicv_active(&vmx->vcpu)) {
+		vmcs_write64(EOI_EXIT_BITMAP0, 0);
+		vmcs_write64(EOI_EXIT_BITMAP1, 0);
+		vmcs_write64(EOI_EXIT_BITMAP2, 0);
+		vmcs_write64(EOI_EXIT_BITMAP3, 0);
+
+		vmcs_write16(GUEST_INTR_STATUS, 0);
+
+		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);
+		vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc)));
+	}
+
+	if (!kvm_pause_in_guest(vmx->vcpu.kvm)) {
+		vmcs_write32(PLE_GAP, ple_gap);
+		vmx->ple_window = ple_window;
+		vmx->ple_window_dirty = true;
+	}
+
+	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, 0);
+	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, 0);
+	vmcs_write32(CR3_TARGET_COUNT, 0);           /* 22.2.1 */
+
+	vmcs_write16(HOST_FS_SELECTOR, 0);            /* 22.2.4 */
+	vmcs_write16(HOST_GS_SELECTOR, 0);            /* 22.2.4 */
+	vmx_set_constant_host_state(vmx);
+	vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */
+	vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */
+
+	if (cpu_has_vmx_vmfunc())
+		vmcs_write64(VM_FUNCTION_CONTROL, 0);
+
+	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
+	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
+	vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
+	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
+	vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
+
+	if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT)
+		vmcs_write64(GUEST_IA32_PAT, vmx->vcpu.arch.pat);
+
+	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) {
+		u32 index = vmx_msr_index[i];
+		u32 data_low, data_high;
+		int j = vmx->nmsrs;
+
+		if (rdmsr_safe(index, &data_low, &data_high) < 0)
+			continue;
+		if (wrmsr_safe(index, data_low, data_high) < 0)
+			continue;
+		vmx->guest_msrs[j].index = i;
+		vmx->guest_msrs[j].data = 0;
+		vmx->guest_msrs[j].mask = -1ull;
+		++vmx->nmsrs;
+	}
+
+	vmx->arch_capabilities = kvm_get_arch_capabilities();
+
+	vm_exit_controls_init(vmx, vmx_vmexit_ctrl());
+
+	/* 22.2.1, 20.8.1 */
+	vm_entry_controls_init(vmx, vmx_vmentry_ctrl());
+
+	vmx->vcpu.arch.cr0_guest_owned_bits = X86_CR0_TS;
+	vmcs_writel(CR0_GUEST_HOST_MASK, ~X86_CR0_TS);
+
+	set_cr4_guest_host_mask(vmx);
+
+	if (vmx_xsaves_supported())
+		vmcs_write64(XSS_EXIT_BITMAP, VMX_XSS_EXIT_BITMAP);
+
+	if (enable_pml) {
+		vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
+		vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
+	}
+
+	if (cpu_has_vmx_encls_vmexit())
+		vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
+
+	if (pt_mode == PT_MODE_HOST_GUEST) {
+		memset(&vmx->pt_desc, 0, sizeof(vmx->pt_desc));
+		/* Bit[6~0] are forced to 1, writes are ignored. */
+		vmx->pt_desc.guest.output_mask = 0x7F;
+		vmcs_write64(GUEST_IA32_RTIT_CTL, 0);
+	}
+}
+
+static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct msr_data apic_base_msr;
+	u64 cr0;
+
+	vmx->rmode.vm86_active = 0;
+	vmx->spec_ctrl = 0;
+
+	vcpu->arch.microcode_version = 0x100000000ULL;
+	vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val();
+	kvm_set_cr8(vcpu, 0);
+
+	if (!init_event) {
+		apic_base_msr.data = APIC_DEFAULT_PHYS_BASE |
+				     MSR_IA32_APICBASE_ENABLE;
+		if (kvm_vcpu_is_reset_bsp(vcpu))
+			apic_base_msr.data |= MSR_IA32_APICBASE_BSP;
+		apic_base_msr.host_initiated = true;
+		kvm_set_apic_base(vcpu, &apic_base_msr);
+	}
+
+	vmx_segment_cache_clear(vmx);
+
+	seg_setup(VCPU_SREG_CS);
+	vmcs_write16(GUEST_CS_SELECTOR, 0xf000);
+	vmcs_writel(GUEST_CS_BASE, 0xffff0000ul);
+
+	seg_setup(VCPU_SREG_DS);
+	seg_setup(VCPU_SREG_ES);
+	seg_setup(VCPU_SREG_FS);
+	seg_setup(VCPU_SREG_GS);
+	seg_setup(VCPU_SREG_SS);
+
+	vmcs_write16(GUEST_TR_SELECTOR, 0);
+	vmcs_writel(GUEST_TR_BASE, 0);
+	vmcs_write32(GUEST_TR_LIMIT, 0xffff);
+	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
+
+	vmcs_write16(GUEST_LDTR_SELECTOR, 0);
+	vmcs_writel(GUEST_LDTR_BASE, 0);
+	vmcs_write32(GUEST_LDTR_LIMIT, 0xffff);
+	vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082);
+
+	if (!init_event) {
+		vmcs_write32(GUEST_SYSENTER_CS, 0);
+		vmcs_writel(GUEST_SYSENTER_ESP, 0);
+		vmcs_writel(GUEST_SYSENTER_EIP, 0);
+		vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
+	}
+
+	kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);
+	kvm_rip_write(vcpu, 0xfff0);
+
+	vmcs_writel(GUEST_GDTR_BASE, 0);
+	vmcs_write32(GUEST_GDTR_LIMIT, 0xffff);
+
+	vmcs_writel(GUEST_IDTR_BASE, 0);
+	vmcs_write32(GUEST_IDTR_LIMIT, 0xffff);
+
+	vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
+	vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, 0);
+	vmcs_writel(GUEST_PENDING_DBG_EXCEPTIONS, 0);
+	if (kvm_mpx_supported())
+		vmcs_write64(GUEST_BNDCFGS, 0);
+
+	setup_msrs(vmx);
+
+	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);  /* 22.2.1 */
+
+	if (cpu_has_vmx_tpr_shadow() && !init_event) {
+		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, 0);
+		if (cpu_need_tpr_shadow(vcpu))
+			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR,
+				     __pa(vcpu->arch.apic->regs));
+		vmcs_write32(TPR_THRESHOLD, 0);
+	}
+
+	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
+
+	if (vmx->vpid != 0)
+		vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
+
+	cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;
+	vmx->vcpu.arch.cr0 = cr0;
+	vmx_set_cr0(vcpu, cr0); /* enter rmode */
+	vmx_set_cr4(vcpu, 0);
+	vmx_set_efer(vcpu, 0);
+
+	update_exception_bitmap(vcpu);
+
+	vpid_sync_context(vmx->vpid);
+	if (init_event)
+		vmx_clear_hlt(vcpu);
+}
+
+static void enable_irq_window(struct kvm_vcpu *vcpu)
+{
+	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
+		      CPU_BASED_VIRTUAL_INTR_PENDING);
+}
+
+static void enable_nmi_window(struct kvm_vcpu *vcpu)
+{
+	if (!enable_vnmi ||
+	    vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_STI) {
+		enable_irq_window(vcpu);
+		return;
+	}
+
+	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
+		      CPU_BASED_VIRTUAL_NMI_PENDING);
+}
+
+static void vmx_inject_irq(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	uint32_t intr;
+	int irq = vcpu->arch.interrupt.nr;
+
+	trace_kvm_inj_virq(irq);
+
+	++vcpu->stat.irq_injections;
+	if (vmx->rmode.vm86_active) {
+		int inc_eip = 0;
+		if (vcpu->arch.interrupt.soft)
+			inc_eip = vcpu->arch.event_exit_inst_len;
+		if (kvm_inject_realmode_interrupt(vcpu, irq, inc_eip) != EMULATE_DONE)
+			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
+		return;
+	}
+	intr = irq | INTR_INFO_VALID_MASK;
+	if (vcpu->arch.interrupt.soft) {
+		intr |= INTR_TYPE_SOFT_INTR;
+		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+			     vmx->vcpu.arch.event_exit_inst_len);
+	} else
+		intr |= INTR_TYPE_EXT_INTR;
+	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr);
+
+	vmx_clear_hlt(vcpu);
+}
+
+static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!enable_vnmi) {
+		/*
+		 * Tracking the NMI-blocked state in software is built upon
+		 * finding the next open IRQ window. This, in turn, depends on
+		 * well-behaving guests: They have to keep IRQs disabled at
+		 * least as long as the NMI handler runs. Otherwise we may
+		 * cause NMI nesting, maybe breaking the guest. But as this is
+		 * highly unlikely, we can live with the residual risk.
+		 */
+		vmx->loaded_vmcs->soft_vnmi_blocked = 1;
+		vmx->loaded_vmcs->vnmi_blocked_time = 0;
+	}
+
+	++vcpu->stat.nmi_injections;
+	vmx->loaded_vmcs->nmi_known_unmasked = false;
+
+	if (vmx->rmode.vm86_active) {
+		if (kvm_inject_realmode_interrupt(vcpu, NMI_VECTOR, 0) != EMULATE_DONE)
+			kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
+		return;
+	}
+
+	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+			INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR);
+
+	vmx_clear_hlt(vcpu);
+}
+
+bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	bool masked;
+
+	if (!enable_vnmi)
+		return vmx->loaded_vmcs->soft_vnmi_blocked;
+	if (vmx->loaded_vmcs->nmi_known_unmasked)
+		return false;
+	masked = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_NMI;
+	vmx->loaded_vmcs->nmi_known_unmasked = !masked;
+	return masked;
+}
+
+void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (!enable_vnmi) {
+		if (vmx->loaded_vmcs->soft_vnmi_blocked != masked) {
+			vmx->loaded_vmcs->soft_vnmi_blocked = masked;
+			vmx->loaded_vmcs->vnmi_blocked_time = 0;
+		}
+	} else {
+		vmx->loaded_vmcs->nmi_known_unmasked = !masked;
+		if (masked)
+			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
+				      GUEST_INTR_STATE_NMI);
+		else
+			vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
+					GUEST_INTR_STATE_NMI);
+	}
+}
+
+static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
+{
+	if (to_vmx(vcpu)->nested.nested_run_pending)
+		return 0;
+
+	if (!enable_vnmi &&
+	    to_vmx(vcpu)->loaded_vmcs->soft_vnmi_blocked)
+		return 0;
+
+	return	!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
+		  (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI
+		   | GUEST_INTR_STATE_NMI));
+}
+
+static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu)
+{
+	return (!to_vmx(vcpu)->nested.nested_run_pending &&
+		vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
+		!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
+			(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS));
+}
+
+static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
+{
+	int ret;
+
+	if (enable_unrestricted_guest)
+		return 0;
+
+	ret = x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, addr,
+				    PAGE_SIZE * 3);
+	if (ret)
+		return ret;
+	to_kvm_vmx(kvm)->tss_addr = addr;
+	return init_rmode_tss(kvm);
+}
+
+static int vmx_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
+{
+	to_kvm_vmx(kvm)->ept_identity_map_addr = ident_addr;
+	return 0;
+}
+
+static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
+{
+	switch (vec) {
+	case BP_VECTOR:
+		/*
+		 * Update instruction length as we may reinject the exception
+		 * from user space while in guest debugging mode.
+		 */
+		to_vmx(vcpu)->vcpu.arch.event_exit_inst_len =
+			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+		if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
+			return false;
+		/* fall through */
+	case DB_VECTOR:
+		if (vcpu->guest_debug &
+			(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
+			return false;
+		/* fall through */
+	case DE_VECTOR:
+	case OF_VECTOR:
+	case BR_VECTOR:
+	case UD_VECTOR:
+	case DF_VECTOR:
+	case SS_VECTOR:
+	case GP_VECTOR:
+	case MF_VECTOR:
+		return true;
+	break;
+	}
+	return false;
+}
+
+static int handle_rmode_exception(struct kvm_vcpu *vcpu,
+				  int vec, u32 err_code)
+{
+	/*
+	 * Instruction with address size override prefix opcode 0x67
+	 * Cause the #SS fault with 0 error code in VM86 mode.
+	 */
+	if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) {
+		if (kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE) {
+			if (vcpu->arch.halt_request) {
+				vcpu->arch.halt_request = 0;
+				return kvm_vcpu_halt(vcpu);
+			}
+			return 1;
+		}
+		return 0;
+	}
+
+	/*
+	 * Forward all other exceptions that are valid in real mode.
+	 * FIXME: Breaks guest debugging in real mode, needs to be fixed with
+	 *        the required debugging infrastructure rework.
+	 */
+	kvm_queue_exception(vcpu, vec);
+	return 1;
+}
+
+/*
+ * Trigger machine check on the host. We assume all the MSRs are already set up
+ * by the CPU and that we still run on the same CPU as the MCE occurred on.
+ * We pass a fake environment to the machine check handler because we want
+ * the guest to be always treated like user space, no matter what context
+ * it used internally.
+ */
+static void kvm_machine_check(void)
+{
+#if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_64)
+	struct pt_regs regs = {
+		.cs = 3, /* Fake ring 3 no matter what the guest ran on */
+		.flags = X86_EFLAGS_IF,
+	};
+
+	do_machine_check(&regs, 0);
+#endif
+}
+
+static int handle_machine_check(struct kvm_vcpu *vcpu)
+{
+	/* already handled by vcpu_run */
+	return 1;
+}
+
+static int handle_exception(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct kvm_run *kvm_run = vcpu->run;
+	u32 intr_info, ex_no, error_code;
+	unsigned long cr2, rip, dr6;
+	u32 vect_info;
+	enum emulation_result er;
+
+	vect_info = vmx->idt_vectoring_info;
+	intr_info = vmx->exit_intr_info;
+
+	if (is_machine_check(intr_info))
+		return handle_machine_check(vcpu);
+
+	if (is_nmi(intr_info))
+		return 1;  /* already handled by vmx_vcpu_run() */
+
+	if (is_invalid_opcode(intr_info))
+		return handle_ud(vcpu);
+
+	error_code = 0;
+	if (intr_info & INTR_INFO_DELIVER_CODE_MASK)
+		error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
+
+	if (!vmx->rmode.vm86_active && is_gp_fault(intr_info)) {
+		WARN_ON_ONCE(!enable_vmware_backdoor);
+		er = kvm_emulate_instruction(vcpu,
+			EMULTYPE_VMWARE | EMULTYPE_NO_UD_ON_FAIL);
+		if (er == EMULATE_USER_EXIT)
+			return 0;
+		else if (er != EMULATE_DONE)
+			kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
+		return 1;
+	}
+
+	/*
+	 * The #PF with PFEC.RSVD = 1 indicates the guest is accessing
+	 * MMIO, it is better to report an internal error.
+	 * See the comments in vmx_handle_exit.
+	 */
+	if ((vect_info & VECTORING_INFO_VALID_MASK) &&
+	    !(is_page_fault(intr_info) && !(error_code & PFERR_RSVD_MASK))) {
+		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_SIMUL_EX;
+		vcpu->run->internal.ndata = 3;
+		vcpu->run->internal.data[0] = vect_info;
+		vcpu->run->internal.data[1] = intr_info;
+		vcpu->run->internal.data[2] = error_code;
+		return 0;
+	}
+
+	if (is_page_fault(intr_info)) {
+		cr2 = vmcs_readl(EXIT_QUALIFICATION);
+		/* EPT won't cause page fault directly */
+		WARN_ON_ONCE(!vcpu->arch.apf.host_apf_reason && enable_ept);
+		return kvm_handle_page_fault(vcpu, error_code, cr2, NULL, 0);
+	}
+
+	ex_no = intr_info & INTR_INFO_VECTOR_MASK;
+
+	if (vmx->rmode.vm86_active && rmode_exception(vcpu, ex_no))
+		return handle_rmode_exception(vcpu, ex_no, error_code);
+
+	switch (ex_no) {
+	case AC_VECTOR:
+		kvm_queue_exception_e(vcpu, AC_VECTOR, error_code);
+		return 1;
+	case DB_VECTOR:
+		dr6 = vmcs_readl(EXIT_QUALIFICATION);
+		if (!(vcpu->guest_debug &
+		      (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
+			vcpu->arch.dr6 &= ~15;
+			vcpu->arch.dr6 |= dr6 | DR6_RTM;
+			if (is_icebp(intr_info))
+				skip_emulated_instruction(vcpu);
+
+			kvm_queue_exception(vcpu, DB_VECTOR);
+			return 1;
+		}
+		kvm_run->debug.arch.dr6 = dr6 | DR6_FIXED_1;
+		kvm_run->debug.arch.dr7 = vmcs_readl(GUEST_DR7);
+		/* fall through */
+	case BP_VECTOR:
+		/*
+		 * Update instruction length as we may reinject #BP from
+		 * user space while in guest debugging mode. Reading it for
+		 * #DB as well causes no harm, it is not used in that case.
+		 */
+		vmx->vcpu.arch.event_exit_inst_len =
+			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
+		kvm_run->exit_reason = KVM_EXIT_DEBUG;
+		rip = kvm_rip_read(vcpu);
+		kvm_run->debug.arch.pc = vmcs_readl(GUEST_CS_BASE) + rip;
+		kvm_run->debug.arch.exception = ex_no;
+		break;
+	default:
+		kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
+		kvm_run->ex.exception = ex_no;
+		kvm_run->ex.error_code = error_code;
+		break;
+	}
+	return 0;
+}
+
+static int handle_external_interrupt(struct kvm_vcpu *vcpu)
+{
+	++vcpu->stat.irq_exits;
+	return 1;
+}
+
+static int handle_triple_fault(struct kvm_vcpu *vcpu)
+{
+	vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN;
+	vcpu->mmio_needed = 0;
+	return 0;
+}
+
+static int handle_io(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification;
+	int size, in, string;
+	unsigned port;
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	string = (exit_qualification & 16) != 0;
+
+	++vcpu->stat.io_exits;
+
+	if (string)
+		return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
+
+	port = exit_qualification >> 16;
+	size = (exit_qualification & 7) + 1;
+	in = (exit_qualification & 8) != 0;
+
+	return kvm_fast_pio(vcpu, size, port, in);
+}
+
+static void
+vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
+{
+	/*
+	 * Patch in the VMCALL instruction:
+	 */
+	hypercall[0] = 0x0f;
+	hypercall[1] = 0x01;
+	hypercall[2] = 0xc1;
+}
+
+/* called to set cr0 as appropriate for a mov-to-cr0 exit. */
+static int handle_set_cr0(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	if (is_guest_mode(vcpu)) {
+		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+		unsigned long orig_val = val;
+
+		/*
+		 * We get here when L2 changed cr0 in a way that did not change
+		 * any of L1's shadowed bits (see nested_vmx_exit_handled_cr),
+		 * but did change L0 shadowed bits. So we first calculate the
+		 * effective cr0 value that L1 would like to write into the
+		 * hardware. It consists of the L2-owned bits from the new
+		 * value combined with the L1-owned bits from L1's guest_cr0.
+		 */
+		val = (val & ~vmcs12->cr0_guest_host_mask) |
+			(vmcs12->guest_cr0 & vmcs12->cr0_guest_host_mask);
+
+		if (!nested_guest_cr0_valid(vcpu, val))
+			return 1;
+
+		if (kvm_set_cr0(vcpu, val))
+			return 1;
+		vmcs_writel(CR0_READ_SHADOW, orig_val);
+		return 0;
+	} else {
+		if (to_vmx(vcpu)->nested.vmxon &&
+		    !nested_host_cr0_valid(vcpu, val))
+			return 1;
+
+		return kvm_set_cr0(vcpu, val);
+	}
+}
+
+static int handle_set_cr4(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	if (is_guest_mode(vcpu)) {
+		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+		unsigned long orig_val = val;
+
+		/* analogously to handle_set_cr0 */
+		val = (val & ~vmcs12->cr4_guest_host_mask) |
+			(vmcs12->guest_cr4 & vmcs12->cr4_guest_host_mask);
+		if (kvm_set_cr4(vcpu, val))
+			return 1;
+		vmcs_writel(CR4_READ_SHADOW, orig_val);
+		return 0;
+	} else
+		return kvm_set_cr4(vcpu, val);
+}
+
+static int handle_desc(struct kvm_vcpu *vcpu)
+{
+	WARN_ON(!(vcpu->arch.cr4 & X86_CR4_UMIP));
+	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
+}
+
+static int handle_cr(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification, val;
+	int cr;
+	int reg;
+	int err;
+	int ret;
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	cr = exit_qualification & 15;
+	reg = (exit_qualification >> 8) & 15;
+	switch ((exit_qualification >> 4) & 3) {
+	case 0: /* mov to cr */
+		val = kvm_register_readl(vcpu, reg);
+		trace_kvm_cr_write(cr, val);
+		switch (cr) {
+		case 0:
+			err = handle_set_cr0(vcpu, val);
+			return kvm_complete_insn_gp(vcpu, err);
+		case 3:
+			WARN_ON_ONCE(enable_unrestricted_guest);
+			err = kvm_set_cr3(vcpu, val);
+			return kvm_complete_insn_gp(vcpu, err);
+		case 4:
+			err = handle_set_cr4(vcpu, val);
+			return kvm_complete_insn_gp(vcpu, err);
+		case 8: {
+				u8 cr8_prev = kvm_get_cr8(vcpu);
+				u8 cr8 = (u8)val;
+				err = kvm_set_cr8(vcpu, cr8);
+				ret = kvm_complete_insn_gp(vcpu, err);
+				if (lapic_in_kernel(vcpu))
+					return ret;
+				if (cr8_prev <= cr8)
+					return ret;
+				/*
+				 * TODO: we might be squashing a
+				 * KVM_GUESTDBG_SINGLESTEP-triggered
+				 * KVM_EXIT_DEBUG here.
+				 */
+				vcpu->run->exit_reason = KVM_EXIT_SET_TPR;
+				return 0;
+			}
+		}
+		break;
+	case 2: /* clts */
+		WARN_ONCE(1, "Guest should always own CR0.TS");
+		vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS));
+		trace_kvm_cr_write(0, kvm_read_cr0(vcpu));
+		return kvm_skip_emulated_instruction(vcpu);
+	case 1: /*mov from cr*/
+		switch (cr) {
+		case 3:
+			WARN_ON_ONCE(enable_unrestricted_guest);
+			val = kvm_read_cr3(vcpu);
+			kvm_register_write(vcpu, reg, val);
+			trace_kvm_cr_read(cr, val);
+			return kvm_skip_emulated_instruction(vcpu);
+		case 8:
+			val = kvm_get_cr8(vcpu);
+			kvm_register_write(vcpu, reg, val);
+			trace_kvm_cr_read(cr, val);
+			return kvm_skip_emulated_instruction(vcpu);
+		}
+		break;
+	case 3: /* lmsw */
+		val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
+		trace_kvm_cr_write(0, (kvm_read_cr0(vcpu) & ~0xful) | val);
+		kvm_lmsw(vcpu, val);
+
+		return kvm_skip_emulated_instruction(vcpu);
+	default:
+		break;
+	}
+	vcpu->run->exit_reason = 0;
+	vcpu_unimpl(vcpu, "unhandled control register: op %d cr %d\n",
+	       (int)(exit_qualification >> 4) & 3, cr);
+	return 0;
+}
+
+static int handle_dr(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification;
+	int dr, dr7, reg;
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	dr = exit_qualification & DEBUG_REG_ACCESS_NUM;
+
+	/* First, if DR does not exist, trigger UD */
+	if (!kvm_require_dr(vcpu, dr))
+		return 1;
+
+	/* Do not handle if the CPL > 0, will trigger GP on re-entry */
+	if (!kvm_require_cpl(vcpu, 0))
+		return 1;
+	dr7 = vmcs_readl(GUEST_DR7);
+	if (dr7 & DR7_GD) {
+		/*
+		 * As the vm-exit takes precedence over the debug trap, we
+		 * need to emulate the latter, either for the host or the
+		 * guest debugging itself.
+		 */
+		if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) {
+			vcpu->run->debug.arch.dr6 = vcpu->arch.dr6;
+			vcpu->run->debug.arch.dr7 = dr7;
+			vcpu->run->debug.arch.pc = kvm_get_linear_rip(vcpu);
+			vcpu->run->debug.arch.exception = DB_VECTOR;
+			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
+			return 0;
+		} else {
+			vcpu->arch.dr6 &= ~15;
+			vcpu->arch.dr6 |= DR6_BD | DR6_RTM;
+			kvm_queue_exception(vcpu, DB_VECTOR);
+			return 1;
+		}
+	}
+
+	if (vcpu->guest_debug == 0) {
+		vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+				CPU_BASED_MOV_DR_EXITING);
+
+		/*
+		 * No more DR vmexits; force a reload of the debug registers
+		 * and reenter on this instruction.  The next vmexit will
+		 * retrieve the full state of the debug registers.
+		 */
+		vcpu->arch.switch_db_regs |= KVM_DEBUGREG_WONT_EXIT;
+		return 1;
+	}
+
+	reg = DEBUG_REG_ACCESS_REG(exit_qualification);
+	if (exit_qualification & TYPE_MOV_FROM_DR) {
+		unsigned long val;
+
+		if (kvm_get_dr(vcpu, dr, &val))
+			return 1;
+		kvm_register_write(vcpu, reg, val);
+	} else
+		if (kvm_set_dr(vcpu, dr, kvm_register_readl(vcpu, reg)))
+			return 1;
+
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static u64 vmx_get_dr6(struct kvm_vcpu *vcpu)
+{
+	return vcpu->arch.dr6;
+}
+
+static void vmx_set_dr6(struct kvm_vcpu *vcpu, unsigned long val)
+{
+}
+
+static void vmx_sync_dirty_debug_regs(struct kvm_vcpu *vcpu)
+{
+	get_debugreg(vcpu->arch.db[0], 0);
+	get_debugreg(vcpu->arch.db[1], 1);
+	get_debugreg(vcpu->arch.db[2], 2);
+	get_debugreg(vcpu->arch.db[3], 3);
+	get_debugreg(vcpu->arch.dr6, 6);
+	vcpu->arch.dr7 = vmcs_readl(GUEST_DR7);
+
+	vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_WONT_EXIT;
+	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL, CPU_BASED_MOV_DR_EXITING);
+}
+
+static void vmx_set_dr7(struct kvm_vcpu *vcpu, unsigned long val)
+{
+	vmcs_writel(GUEST_DR7, val);
+}
+
+static int handle_cpuid(struct kvm_vcpu *vcpu)
+{
+	return kvm_emulate_cpuid(vcpu);
+}
+
+static int handle_rdmsr(struct kvm_vcpu *vcpu)
+{
+	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
+	struct msr_data msr_info;
+
+	msr_info.index = ecx;
+	msr_info.host_initiated = false;
+	if (vmx_get_msr(vcpu, &msr_info)) {
+		trace_kvm_msr_read_ex(ecx);
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	trace_kvm_msr_read(ecx, msr_info.data);
+
+	/* FIXME: handling of bits 32:63 of rax, rdx */
+	vcpu->arch.regs[VCPU_REGS_RAX] = msr_info.data & -1u;
+	vcpu->arch.regs[VCPU_REGS_RDX] = (msr_info.data >> 32) & -1u;
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int handle_wrmsr(struct kvm_vcpu *vcpu)
+{
+	struct msr_data msr;
+	u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
+	u64 data = (vcpu->arch.regs[VCPU_REGS_RAX] & -1u)
+		| ((u64)(vcpu->arch.regs[VCPU_REGS_RDX] & -1u) << 32);
+
+	msr.data = data;
+	msr.index = ecx;
+	msr.host_initiated = false;
+	if (kvm_set_msr(vcpu, &msr) != 0) {
+		trace_kvm_msr_write_ex(ecx, data);
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	trace_kvm_msr_write(ecx, data);
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu)
+{
+	kvm_apic_update_ppr(vcpu);
+	return 1;
+}
+
+static int handle_interrupt_window(struct kvm_vcpu *vcpu)
+{
+	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+			CPU_BASED_VIRTUAL_INTR_PENDING);
+
+	kvm_make_request(KVM_REQ_EVENT, vcpu);
+
+	++vcpu->stat.irq_window_exits;
+	return 1;
+}
+
+static int handle_halt(struct kvm_vcpu *vcpu)
+{
+	return kvm_emulate_halt(vcpu);
+}
+
+static int handle_vmcall(struct kvm_vcpu *vcpu)
+{
+	return kvm_emulate_hypercall(vcpu);
+}
+
+static int handle_invd(struct kvm_vcpu *vcpu)
+{
+	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
+}
+
+static int handle_invlpg(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+	kvm_mmu_invlpg(vcpu, exit_qualification);
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int handle_rdpmc(struct kvm_vcpu *vcpu)
+{
+	int err;
+
+	err = kvm_rdpmc(vcpu);
+	return kvm_complete_insn_gp(vcpu, err);
+}
+
+static int handle_wbinvd(struct kvm_vcpu *vcpu)
+{
+	return kvm_emulate_wbinvd(vcpu);
+}
+
+static int handle_xsetbv(struct kvm_vcpu *vcpu)
+{
+	u64 new_bv = kvm_read_edx_eax(vcpu);
+	u32 index = kvm_register_read(vcpu, VCPU_REGS_RCX);
+
+	if (kvm_set_xcr(vcpu, index, new_bv) == 0)
+		return kvm_skip_emulated_instruction(vcpu);
+	return 1;
+}
+
+static int handle_xsaves(struct kvm_vcpu *vcpu)
+{
+	kvm_skip_emulated_instruction(vcpu);
+	WARN(1, "this should never happen\n");
+	return 1;
+}
+
+static int handle_xrstors(struct kvm_vcpu *vcpu)
+{
+	kvm_skip_emulated_instruction(vcpu);
+	WARN(1, "this should never happen\n");
+	return 1;
+}
+
+static int handle_apic_access(struct kvm_vcpu *vcpu)
+{
+	if (likely(fasteoi)) {
+		unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+		int access_type, offset;
+
+		access_type = exit_qualification & APIC_ACCESS_TYPE;
+		offset = exit_qualification & APIC_ACCESS_OFFSET;
+		/*
+		 * Sane guest uses MOV to write EOI, with written value
+		 * not cared. So make a short-circuit here by avoiding
+		 * heavy instruction emulation.
+		 */
+		if ((access_type == TYPE_LINEAR_APIC_INST_WRITE) &&
+		    (offset == APIC_EOI)) {
+			kvm_lapic_set_eoi(vcpu);
+			return kvm_skip_emulated_instruction(vcpu);
+		}
+	}
+	return kvm_emulate_instruction(vcpu, 0) == EMULATE_DONE;
+}
+
+static int handle_apic_eoi_induced(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	int vector = exit_qualification & 0xff;
+
+	/* EOI-induced VM exit is trap-like and thus no need to adjust IP */
+	kvm_apic_set_eoi_accelerated(vcpu, vector);
+	return 1;
+}
+
+static int handle_apic_write(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+	u32 offset = exit_qualification & 0xfff;
+
+	/* APIC-write VM exit is trap-like and thus no need to adjust IP */
+	kvm_apic_write_nodecode(vcpu, offset);
+	return 1;
+}
+
+static int handle_task_switch(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long exit_qualification;
+	bool has_error_code = false;
+	u32 error_code = 0;
+	u16 tss_selector;
+	int reason, type, idt_v, idt_index;
+
+	idt_v = (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
+	idt_index = (vmx->idt_vectoring_info & VECTORING_INFO_VECTOR_MASK);
+	type = (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK);
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+	reason = (u32)exit_qualification >> 30;
+	if (reason == TASK_SWITCH_GATE && idt_v) {
+		switch (type) {
+		case INTR_TYPE_NMI_INTR:
+			vcpu->arch.nmi_injected = false;
+			vmx_set_nmi_mask(vcpu, true);
+			break;
+		case INTR_TYPE_EXT_INTR:
+		case INTR_TYPE_SOFT_INTR:
+			kvm_clear_interrupt_queue(vcpu);
+			break;
+		case INTR_TYPE_HARD_EXCEPTION:
+			if (vmx->idt_vectoring_info &
+			    VECTORING_INFO_DELIVER_CODE_MASK) {
+				has_error_code = true;
+				error_code =
+					vmcs_read32(IDT_VECTORING_ERROR_CODE);
+			}
+			/* fall through */
+		case INTR_TYPE_SOFT_EXCEPTION:
+			kvm_clear_exception_queue(vcpu);
+			break;
+		default:
+			break;
+		}
+	}
+	tss_selector = exit_qualification;
+
+	if (!idt_v || (type != INTR_TYPE_HARD_EXCEPTION &&
+		       type != INTR_TYPE_EXT_INTR &&
+		       type != INTR_TYPE_NMI_INTR))
+		skip_emulated_instruction(vcpu);
+
+	if (kvm_task_switch(vcpu, tss_selector,
+			    type == INTR_TYPE_SOFT_INTR ? idt_index : -1, reason,
+			    has_error_code, error_code) == EMULATE_FAIL) {
+		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+		vcpu->run->internal.ndata = 0;
+		return 0;
+	}
+
+	/*
+	 * TODO: What about debug traps on tss switch?
+	 *       Are we supposed to inject them and update dr6?
+	 */
+
+	return 1;
+}
+
+static int handle_ept_violation(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification;
+	gpa_t gpa;
+	u64 error_code;
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+	/*
+	 * EPT violation happened while executing iret from NMI,
+	 * "blocked by NMI" bit has to be set before next VM entry.
+	 * There are errata that may cause this bit to not be set:
+	 * AAK134, BY25.
+	 */
+	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
+			enable_vnmi &&
+			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
+		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI);
+
+	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
+	trace_kvm_page_fault(gpa, exit_qualification);
+
+	/* Is it a read fault? */
+	error_code = (exit_qualification & EPT_VIOLATION_ACC_READ)
+		     ? PFERR_USER_MASK : 0;
+	/* Is it a write fault? */
+	error_code |= (exit_qualification & EPT_VIOLATION_ACC_WRITE)
+		      ? PFERR_WRITE_MASK : 0;
+	/* Is it a fetch fault? */
+	error_code |= (exit_qualification & EPT_VIOLATION_ACC_INSTR)
+		      ? PFERR_FETCH_MASK : 0;
+	/* ept page table entry is present? */
+	error_code |= (exit_qualification &
+		       (EPT_VIOLATION_READABLE | EPT_VIOLATION_WRITABLE |
+			EPT_VIOLATION_EXECUTABLE))
+		      ? PFERR_PRESENT_MASK : 0;
+
+	error_code |= (exit_qualification & 0x100) != 0 ?
+	       PFERR_GUEST_FINAL_MASK : PFERR_GUEST_PAGE_MASK;
+
+	vcpu->arch.exit_qualification = exit_qualification;
+	return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);
+}
+
+static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
+{
+	gpa_t gpa;
+
+	/*
+	 * A nested guest cannot optimize MMIO vmexits, because we have an
+	 * nGPA here instead of the required GPA.
+	 */
+	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
+	if (!is_guest_mode(vcpu) &&
+	    !kvm_io_bus_write(vcpu, KVM_FAST_MMIO_BUS, gpa, 0, NULL)) {
+		trace_kvm_fast_mmio(gpa);
+		/*
+		 * Doing kvm_skip_emulated_instruction() depends on undefined
+		 * behavior: Intel's manual doesn't mandate
+		 * VM_EXIT_INSTRUCTION_LEN to be set in VMCS when EPT MISCONFIG
+		 * occurs and while on real hardware it was observed to be set,
+		 * other hypervisors (namely Hyper-V) don't set it, we end up
+		 * advancing IP with some random value. Disable fast mmio when
+		 * running nested and keep it for real hardware in hope that
+		 * VM_EXIT_INSTRUCTION_LEN will always be set correctly.
+		 */
+		if (!static_cpu_has(X86_FEATURE_HYPERVISOR))
+			return kvm_skip_emulated_instruction(vcpu);
+		else
+			return kvm_emulate_instruction(vcpu, EMULTYPE_SKIP) ==
+								EMULATE_DONE;
+	}
+
+	return kvm_mmu_page_fault(vcpu, gpa, PFERR_RSVD_MASK, NULL, 0);
+}
+
+static int handle_nmi_window(struct kvm_vcpu *vcpu)
+{
+	WARN_ON_ONCE(!enable_vnmi);
+	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+			CPU_BASED_VIRTUAL_NMI_PENDING);
+	++vcpu->stat.nmi_window_exits;
+	kvm_make_request(KVM_REQ_EVENT, vcpu);
+
+	return 1;
+}
+
+static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	enum emulation_result err = EMULATE_DONE;
+	int ret = 1;
+	u32 cpu_exec_ctrl;
+	bool intr_window_requested;
+	unsigned count = 130;
+
+	/*
+	 * We should never reach the point where we are emulating L2
+	 * due to invalid guest state as that means we incorrectly
+	 * allowed a nested VMEntry with an invalid vmcs12.
+	 */
+	WARN_ON_ONCE(vmx->emulation_required && vmx->nested.nested_run_pending);
+
+	cpu_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
+	intr_window_requested = cpu_exec_ctrl & CPU_BASED_VIRTUAL_INTR_PENDING;
+
+	while (vmx->emulation_required && count-- != 0) {
+		if (intr_window_requested && vmx_interrupt_allowed(vcpu))
+			return handle_interrupt_window(&vmx->vcpu);
+
+		if (kvm_test_request(KVM_REQ_EVENT, vcpu))
+			return 1;
+
+		err = kvm_emulate_instruction(vcpu, 0);
+
+		if (err == EMULATE_USER_EXIT) {
+			++vcpu->stat.mmio_exits;
+			ret = 0;
+			goto out;
+		}
+
+		if (err != EMULATE_DONE)
+			goto emulation_error;
+
+		if (vmx->emulation_required && !vmx->rmode.vm86_active &&
+		    vcpu->arch.exception.pending)
+			goto emulation_error;
+
+		if (vcpu->arch.halt_request) {
+			vcpu->arch.halt_request = 0;
+			ret = kvm_vcpu_halt(vcpu);
+			goto out;
+		}
+
+		if (signal_pending(current))
+			goto out;
+		if (need_resched())
+			schedule();
+	}
+
+out:
+	return ret;
+
+emulation_error:
+	vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+	vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+	vcpu->run->internal.ndata = 0;
+	return 0;
+}
+
+static void grow_ple_window(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int old = vmx->ple_window;
+
+	vmx->ple_window = __grow_ple_window(old, ple_window,
+					    ple_window_grow,
+					    ple_window_max);
+
+	if (vmx->ple_window != old)
+		vmx->ple_window_dirty = true;
+
+	trace_kvm_ple_window_grow(vcpu->vcpu_id, vmx->ple_window, old);
+}
+
+static void shrink_ple_window(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int old = vmx->ple_window;
+
+	vmx->ple_window = __shrink_ple_window(old, ple_window,
+					      ple_window_shrink,
+					      ple_window);
+
+	if (vmx->ple_window != old)
+		vmx->ple_window_dirty = true;
+
+	trace_kvm_ple_window_shrink(vcpu->vcpu_id, vmx->ple_window, old);
+}
+
+/*
+ * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
+ */
+static void wakeup_handler(void)
+{
+	struct kvm_vcpu *vcpu;
+	int cpu = smp_processor_id();
+
+	spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
+	list_for_each_entry(vcpu, &per_cpu(blocked_vcpu_on_cpu, cpu),
+			blocked_vcpu_list) {
+		struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
+
+		if (pi_test_on(pi_desc) == 1)
+			kvm_vcpu_kick(vcpu);
+	}
+	spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
+}
+
+static void vmx_enable_tdp(void)
+{
+	kvm_mmu_set_mask_ptes(VMX_EPT_READABLE_MASK,
+		enable_ept_ad_bits ? VMX_EPT_ACCESS_BIT : 0ull,
+		enable_ept_ad_bits ? VMX_EPT_DIRTY_BIT : 0ull,
+		0ull, VMX_EPT_EXECUTABLE_MASK,
+		cpu_has_vmx_ept_execute_only() ? 0ull : VMX_EPT_READABLE_MASK,
+		VMX_EPT_RWX_MASK, 0ull);
+
+	ept_set_mmio_spte_mask();
+	kvm_enable_tdp();
+}
+
+/*
+ * Indicate a busy-waiting vcpu in spinlock. We do not enable the PAUSE
+ * exiting, so only get here on cpu with PAUSE-Loop-Exiting.
+ */
+static int handle_pause(struct kvm_vcpu *vcpu)
+{
+	if (!kvm_pause_in_guest(vcpu->kvm))
+		grow_ple_window(vcpu);
+
+	/*
+	 * Intel sdm vol3 ch-25.1.3 says: The "PAUSE-loop exiting"
+	 * VM-execution control is ignored if CPL > 0. OTOH, KVM
+	 * never set PAUSE_EXITING and just set PLE if supported,
+	 * so the vcpu must be CPL=0 if it gets a PAUSE exit.
+	 */
+	kvm_vcpu_on_spin(vcpu, true);
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int handle_nop(struct kvm_vcpu *vcpu)
+{
+	return kvm_skip_emulated_instruction(vcpu);
+}
+
+static int handle_mwait(struct kvm_vcpu *vcpu)
+{
+	printk_once(KERN_WARNING "kvm: MWAIT instruction emulated as NOP!\n");
+	return handle_nop(vcpu);
+}
+
+static int handle_invalid_op(struct kvm_vcpu *vcpu)
+{
+	kvm_queue_exception(vcpu, UD_VECTOR);
+	return 1;
+}
+
+static int handle_monitor_trap(struct kvm_vcpu *vcpu)
+{
+	return 1;
+}
+
+static int handle_monitor(struct kvm_vcpu *vcpu)
+{
+	printk_once(KERN_WARNING "kvm: MONITOR instruction emulated as NOP!\n");
+	return handle_nop(vcpu);
+}
+
+static int handle_invpcid(struct kvm_vcpu *vcpu)
+{
+	u32 vmx_instruction_info;
+	unsigned long type;
+	bool pcid_enabled;
+	gva_t gva;
+	struct x86_exception e;
+	unsigned i;
+	unsigned long roots_to_free = 0;
+	struct {
+		u64 pcid;
+		u64 gla;
+	} operand;
+
+	if (!guest_cpuid_has(vcpu, X86_FEATURE_INVPCID)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+
+	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
+
+	if (type > 3) {
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	/* According to the Intel instruction reference, the memory operand
+	 * is read even if it isn't needed (e.g., for type==all)
+	 */
+	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
+				vmx_instruction_info, false, &gva))
+		return 1;
+
+	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
+		kvm_inject_page_fault(vcpu, &e);
+		return 1;
+	}
+
+	if (operand.pcid >> 12 != 0) {
+		kvm_inject_gp(vcpu, 0);
+		return 1;
+	}
+
+	pcid_enabled = kvm_read_cr4_bits(vcpu, X86_CR4_PCIDE);
+
+	switch (type) {
+	case INVPCID_TYPE_INDIV_ADDR:
+		if ((!pcid_enabled && (operand.pcid != 0)) ||
+		    is_noncanonical_address(operand.gla, vcpu)) {
+			kvm_inject_gp(vcpu, 0);
+			return 1;
+		}
+		kvm_mmu_invpcid_gva(vcpu, operand.gla, operand.pcid);
+		return kvm_skip_emulated_instruction(vcpu);
+
+	case INVPCID_TYPE_SINGLE_CTXT:
+		if (!pcid_enabled && (operand.pcid != 0)) {
+			kvm_inject_gp(vcpu, 0);
+			return 1;
+		}
+
+		if (kvm_get_active_pcid(vcpu) == operand.pcid) {
+			kvm_mmu_sync_roots(vcpu);
+			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
+		}
+
+		for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
+			if (kvm_get_pcid(vcpu, vcpu->arch.mmu->prev_roots[i].cr3)
+			    == operand.pcid)
+				roots_to_free |= KVM_MMU_ROOT_PREVIOUS(i);
+
+		kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, roots_to_free);
+		/*
+		 * If neither the current cr3 nor any of the prev_roots use the
+		 * given PCID, then nothing needs to be done here because a
+		 * resync will happen anyway before switching to any other CR3.
+		 */
+
+		return kvm_skip_emulated_instruction(vcpu);
+
+	case INVPCID_TYPE_ALL_NON_GLOBAL:
+		/*
+		 * Currently, KVM doesn't mark global entries in the shadow
+		 * page tables, so a non-global flush just degenerates to a
+		 * global flush. If needed, we could optimize this later by
+		 * keeping track of global entries in shadow page tables.
+		 */
+
+		/* fall-through */
+	case INVPCID_TYPE_ALL_INCL_GLOBAL:
+		kvm_mmu_unload(vcpu);
+		return kvm_skip_emulated_instruction(vcpu);
+
+	default:
+		BUG(); /* We have already checked above that type <= 3 */
+	}
+}
+
+static int handle_pml_full(struct kvm_vcpu *vcpu)
+{
+	unsigned long exit_qualification;
+
+	trace_kvm_pml_full(vcpu->vcpu_id);
+
+	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+
+	/*
+	 * PML buffer FULL happened while executing iret from NMI,
+	 * "blocked by NMI" bit has to be set before next VM entry.
+	 */
+	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
+			enable_vnmi &&
+			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
+		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
+				GUEST_INTR_STATE_NMI);
+
+	/*
+	 * PML buffer already flushed at beginning of VMEXIT. Nothing to do
+	 * here.., and there's no userspace involvement needed for PML.
+	 */
+	return 1;
+}
+
+static int handle_preemption_timer(struct kvm_vcpu *vcpu)
+{
+	if (!to_vmx(vcpu)->req_immediate_exit)
+		kvm_lapic_expired_hv_timer(vcpu);
+	return 1;
+}
+
+/*
+ * When nested=0, all VMX instruction VM Exits filter here.  The handlers
+ * are overwritten by nested_vmx_setup() when nested=1.
+ */
+static int handle_vmx_instruction(struct kvm_vcpu *vcpu)
+{
+	kvm_queue_exception(vcpu, UD_VECTOR);
+	return 1;
+}
+
+static int handle_encls(struct kvm_vcpu *vcpu)
+{
+	/*
+	 * SGX virtualization is not yet supported.  There is no software
+	 * enable bit for SGX, so we have to trap ENCLS and inject a #UD
+	 * to prevent the guest from executing ENCLS.
+	 */
+	kvm_queue_exception(vcpu, UD_VECTOR);
+	return 1;
+}
+
+/*
+ * The exit handlers return 1 if the exit was handled fully and guest execution
+ * may resume.  Otherwise they set the kvm_run parameter to indicate what needs
+ * to be done to userspace and return 0.
+ */
+static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
+	[EXIT_REASON_EXCEPTION_NMI]           = handle_exception,
+	[EXIT_REASON_EXTERNAL_INTERRUPT]      = handle_external_interrupt,
+	[EXIT_REASON_TRIPLE_FAULT]            = handle_triple_fault,
+	[EXIT_REASON_NMI_WINDOW]	      = handle_nmi_window,
+	[EXIT_REASON_IO_INSTRUCTION]          = handle_io,
+	[EXIT_REASON_CR_ACCESS]               = handle_cr,
+	[EXIT_REASON_DR_ACCESS]               = handle_dr,
+	[EXIT_REASON_CPUID]                   = handle_cpuid,
+	[EXIT_REASON_MSR_READ]                = handle_rdmsr,
+	[EXIT_REASON_MSR_WRITE]               = handle_wrmsr,
+	[EXIT_REASON_PENDING_INTERRUPT]       = handle_interrupt_window,
+	[EXIT_REASON_HLT]                     = handle_halt,
+	[EXIT_REASON_INVD]		      = handle_invd,
+	[EXIT_REASON_INVLPG]		      = handle_invlpg,
+	[EXIT_REASON_RDPMC]                   = handle_rdpmc,
+	[EXIT_REASON_VMCALL]                  = handle_vmcall,
+	[EXIT_REASON_VMCLEAR]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMLAUNCH]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMPTRLD]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMPTRST]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMREAD]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMRESUME]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMWRITE]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMOFF]		      = handle_vmx_instruction,
+	[EXIT_REASON_VMON]		      = handle_vmx_instruction,
+	[EXIT_REASON_TPR_BELOW_THRESHOLD]     = handle_tpr_below_threshold,
+	[EXIT_REASON_APIC_ACCESS]             = handle_apic_access,
+	[EXIT_REASON_APIC_WRITE]              = handle_apic_write,
+	[EXIT_REASON_EOI_INDUCED]             = handle_apic_eoi_induced,
+	[EXIT_REASON_WBINVD]                  = handle_wbinvd,
+	[EXIT_REASON_XSETBV]                  = handle_xsetbv,
+	[EXIT_REASON_TASK_SWITCH]             = handle_task_switch,
+	[EXIT_REASON_MCE_DURING_VMENTRY]      = handle_machine_check,
+	[EXIT_REASON_GDTR_IDTR]		      = handle_desc,
+	[EXIT_REASON_LDTR_TR]		      = handle_desc,
+	[EXIT_REASON_EPT_VIOLATION]	      = handle_ept_violation,
+	[EXIT_REASON_EPT_MISCONFIG]           = handle_ept_misconfig,
+	[EXIT_REASON_PAUSE_INSTRUCTION]       = handle_pause,
+	[EXIT_REASON_MWAIT_INSTRUCTION]	      = handle_mwait,
+	[EXIT_REASON_MONITOR_TRAP_FLAG]       = handle_monitor_trap,
+	[EXIT_REASON_MONITOR_INSTRUCTION]     = handle_monitor,
+	[EXIT_REASON_INVEPT]                  = handle_vmx_instruction,
+	[EXIT_REASON_INVVPID]                 = handle_vmx_instruction,
+	[EXIT_REASON_RDRAND]                  = handle_invalid_op,
+	[EXIT_REASON_RDSEED]                  = handle_invalid_op,
+	[EXIT_REASON_XSAVES]                  = handle_xsaves,
+	[EXIT_REASON_XRSTORS]                 = handle_xrstors,
+	[EXIT_REASON_PML_FULL]		      = handle_pml_full,
+	[EXIT_REASON_INVPCID]                 = handle_invpcid,
+	[EXIT_REASON_VMFUNC]		      = handle_vmx_instruction,
+	[EXIT_REASON_PREEMPTION_TIMER]	      = handle_preemption_timer,
+	[EXIT_REASON_ENCLS]		      = handle_encls,
+};
+
+static const int kvm_vmx_max_exit_handlers =
+	ARRAY_SIZE(kvm_vmx_exit_handlers);
+
+static void vmx_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2)
+{
+	*info1 = vmcs_readl(EXIT_QUALIFICATION);
+	*info2 = vmcs_read32(VM_EXIT_INTR_INFO);
+}
+
+static void vmx_destroy_pml_buffer(struct vcpu_vmx *vmx)
+{
+	if (vmx->pml_pg) {
+		__free_page(vmx->pml_pg);
+		vmx->pml_pg = NULL;
+	}
+}
+
+static void vmx_flush_pml_buffer(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u64 *pml_buf;
+	u16 pml_idx;
+
+	pml_idx = vmcs_read16(GUEST_PML_INDEX);
+
+	/* Do nothing if PML buffer is empty */
+	if (pml_idx == (PML_ENTITY_NUM - 1))
+		return;
+
+	/* PML index always points to next available PML buffer entity */
+	if (pml_idx >= PML_ENTITY_NUM)
+		pml_idx = 0;
+	else
+		pml_idx++;
+
+	pml_buf = page_address(vmx->pml_pg);
+	for (; pml_idx < PML_ENTITY_NUM; pml_idx++) {
+		u64 gpa;
+
+		gpa = pml_buf[pml_idx];
+		WARN_ON(gpa & (PAGE_SIZE - 1));
+		kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
+	}
+
+	/* reset PML index */
+	vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
+}
+
+/*
+ * Flush all vcpus' PML buffer and update logged GPAs to dirty_bitmap.
+ * Called before reporting dirty_bitmap to userspace.
+ */
+static void kvm_flush_pml_buffers(struct kvm *kvm)
+{
+	int i;
+	struct kvm_vcpu *vcpu;
+	/*
+	 * We only need to kick vcpu out of guest mode here, as PML buffer
+	 * is flushed at beginning of all VMEXITs, and it's obvious that only
+	 * vcpus running in guest are possible to have unflushed GPAs in PML
+	 * buffer.
+	 */
+	kvm_for_each_vcpu(i, vcpu, kvm)
+		kvm_vcpu_kick(vcpu);
+}
+
+static void vmx_dump_sel(char *name, uint32_t sel)
+{
+	pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n",
+	       name, vmcs_read16(sel),
+	       vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR),
+	       vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR),
+	       vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR));
+}
+
+static void vmx_dump_dtsel(char *name, uint32_t limit)
+{
+	pr_err("%s                           limit=0x%08x, base=0x%016lx\n",
+	       name, vmcs_read32(limit),
+	       vmcs_readl(limit + GUEST_GDTR_BASE - GUEST_GDTR_LIMIT));
+}
+
+static void dump_vmcs(void)
+{
+	u32 vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
+	u32 vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
+	u32 cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
+	u32 pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
+	u32 secondary_exec_control = 0;
+	unsigned long cr4 = vmcs_readl(GUEST_CR4);
+	u64 efer = vmcs_read64(GUEST_IA32_EFER);
+	int i, n;
+
+	if (cpu_has_secondary_exec_ctrls())
+		secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
+
+	pr_err("*** Guest State ***\n");
+	pr_err("CR0: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
+	       vmcs_readl(GUEST_CR0), vmcs_readl(CR0_READ_SHADOW),
+	       vmcs_readl(CR0_GUEST_HOST_MASK));
+	pr_err("CR4: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
+	       cr4, vmcs_readl(CR4_READ_SHADOW), vmcs_readl(CR4_GUEST_HOST_MASK));
+	pr_err("CR3 = 0x%016lx\n", vmcs_readl(GUEST_CR3));
+	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT) &&
+	    (cr4 & X86_CR4_PAE) && !(efer & EFER_LMA))
+	{
+		pr_err("PDPTR0 = 0x%016llx  PDPTR1 = 0x%016llx\n",
+		       vmcs_read64(GUEST_PDPTR0), vmcs_read64(GUEST_PDPTR1));
+		pr_err("PDPTR2 = 0x%016llx  PDPTR3 = 0x%016llx\n",
+		       vmcs_read64(GUEST_PDPTR2), vmcs_read64(GUEST_PDPTR3));
+	}
+	pr_err("RSP = 0x%016lx  RIP = 0x%016lx\n",
+	       vmcs_readl(GUEST_RSP), vmcs_readl(GUEST_RIP));
+	pr_err("RFLAGS=0x%08lx         DR7 = 0x%016lx\n",
+	       vmcs_readl(GUEST_RFLAGS), vmcs_readl(GUEST_DR7));
+	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
+	       vmcs_readl(GUEST_SYSENTER_ESP),
+	       vmcs_read32(GUEST_SYSENTER_CS), vmcs_readl(GUEST_SYSENTER_EIP));
+	vmx_dump_sel("CS:  ", GUEST_CS_SELECTOR);
+	vmx_dump_sel("DS:  ", GUEST_DS_SELECTOR);
+	vmx_dump_sel("SS:  ", GUEST_SS_SELECTOR);
+	vmx_dump_sel("ES:  ", GUEST_ES_SELECTOR);
+	vmx_dump_sel("FS:  ", GUEST_FS_SELECTOR);
+	vmx_dump_sel("GS:  ", GUEST_GS_SELECTOR);
+	vmx_dump_dtsel("GDTR:", GUEST_GDTR_LIMIT);
+	vmx_dump_sel("LDTR:", GUEST_LDTR_SELECTOR);
+	vmx_dump_dtsel("IDTR:", GUEST_IDTR_LIMIT);
+	vmx_dump_sel("TR:  ", GUEST_TR_SELECTOR);
+	if ((vmexit_ctl & (VM_EXIT_SAVE_IA32_PAT | VM_EXIT_SAVE_IA32_EFER)) ||
+	    (vmentry_ctl & (VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_LOAD_IA32_EFER)))
+		pr_err("EFER =     0x%016llx  PAT = 0x%016llx\n",
+		       efer, vmcs_read64(GUEST_IA32_PAT));
+	pr_err("DebugCtl = 0x%016llx  DebugExceptions = 0x%016lx\n",
+	       vmcs_read64(GUEST_IA32_DEBUGCTL),
+	       vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS));
+	if (cpu_has_load_perf_global_ctrl() &&
+	    vmentry_ctl & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
+		pr_err("PerfGlobCtl = 0x%016llx\n",
+		       vmcs_read64(GUEST_IA32_PERF_GLOBAL_CTRL));
+	if (vmentry_ctl & VM_ENTRY_LOAD_BNDCFGS)
+		pr_err("BndCfgS = 0x%016llx\n", vmcs_read64(GUEST_BNDCFGS));
+	pr_err("Interruptibility = %08x  ActivityState = %08x\n",
+	       vmcs_read32(GUEST_INTERRUPTIBILITY_INFO),
+	       vmcs_read32(GUEST_ACTIVITY_STATE));
+	if (secondary_exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
+		pr_err("InterruptStatus = %04x\n",
+		       vmcs_read16(GUEST_INTR_STATUS));
+
+	pr_err("*** Host State ***\n");
+	pr_err("RIP = 0x%016lx  RSP = 0x%016lx\n",
+	       vmcs_readl(HOST_RIP), vmcs_readl(HOST_RSP));
+	pr_err("CS=%04x SS=%04x DS=%04x ES=%04x FS=%04x GS=%04x TR=%04x\n",
+	       vmcs_read16(HOST_CS_SELECTOR), vmcs_read16(HOST_SS_SELECTOR),
+	       vmcs_read16(HOST_DS_SELECTOR), vmcs_read16(HOST_ES_SELECTOR),
+	       vmcs_read16(HOST_FS_SELECTOR), vmcs_read16(HOST_GS_SELECTOR),
+	       vmcs_read16(HOST_TR_SELECTOR));
+	pr_err("FSBase=%016lx GSBase=%016lx TRBase=%016lx\n",
+	       vmcs_readl(HOST_FS_BASE), vmcs_readl(HOST_GS_BASE),
+	       vmcs_readl(HOST_TR_BASE));
+	pr_err("GDTBase=%016lx IDTBase=%016lx\n",
+	       vmcs_readl(HOST_GDTR_BASE), vmcs_readl(HOST_IDTR_BASE));
+	pr_err("CR0=%016lx CR3=%016lx CR4=%016lx\n",
+	       vmcs_readl(HOST_CR0), vmcs_readl(HOST_CR3),
+	       vmcs_readl(HOST_CR4));
+	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
+	       vmcs_readl(HOST_IA32_SYSENTER_ESP),
+	       vmcs_read32(HOST_IA32_SYSENTER_CS),
+	       vmcs_readl(HOST_IA32_SYSENTER_EIP));
+	if (vmexit_ctl & (VM_EXIT_LOAD_IA32_PAT | VM_EXIT_LOAD_IA32_EFER))
+		pr_err("EFER = 0x%016llx  PAT = 0x%016llx\n",
+		       vmcs_read64(HOST_IA32_EFER),
+		       vmcs_read64(HOST_IA32_PAT));
+	if (cpu_has_load_perf_global_ctrl() &&
+	    vmexit_ctl & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
+		pr_err("PerfGlobCtl = 0x%016llx\n",
+		       vmcs_read64(HOST_IA32_PERF_GLOBAL_CTRL));
+
+	pr_err("*** Control State ***\n");
+	pr_err("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n",
+	       pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control);
+	pr_err("EntryControls=%08x ExitControls=%08x\n", vmentry_ctl, vmexit_ctl);
+	pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%08x\n",
+	       vmcs_read32(EXCEPTION_BITMAP),
+	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MASK),
+	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MATCH));
+	pr_err("VMEntry: intr_info=%08x errcode=%08x ilen=%08x\n",
+	       vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
+	       vmcs_read32(VM_ENTRY_EXCEPTION_ERROR_CODE),
+	       vmcs_read32(VM_ENTRY_INSTRUCTION_LEN));
+	pr_err("VMExit: intr_info=%08x errcode=%08x ilen=%08x\n",
+	       vmcs_read32(VM_EXIT_INTR_INFO),
+	       vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
+	       vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
+	pr_err("        reason=%08x qualification=%016lx\n",
+	       vmcs_read32(VM_EXIT_REASON), vmcs_readl(EXIT_QUALIFICATION));
+	pr_err("IDTVectoring: info=%08x errcode=%08x\n",
+	       vmcs_read32(IDT_VECTORING_INFO_FIELD),
+	       vmcs_read32(IDT_VECTORING_ERROR_CODE));
+	pr_err("TSC Offset = 0x%016llx\n", vmcs_read64(TSC_OFFSET));
+	if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING)
+		pr_err("TSC Multiplier = 0x%016llx\n",
+		       vmcs_read64(TSC_MULTIPLIER));
+	if (cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW)
+		pr_err("TPR Threshold = 0x%02x\n", vmcs_read32(TPR_THRESHOLD));
+	if (pin_based_exec_ctrl & PIN_BASED_POSTED_INTR)
+		pr_err("PostedIntrVec = 0x%02x\n", vmcs_read16(POSTED_INTR_NV));
+	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT))
+		pr_err("EPT pointer = 0x%016llx\n", vmcs_read64(EPT_POINTER));
+	n = vmcs_read32(CR3_TARGET_COUNT);
+	for (i = 0; i + 1 < n; i += 4)
+		pr_err("CR3 target%u=%016lx target%u=%016lx\n",
+		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2),
+		       i + 1, vmcs_readl(CR3_TARGET_VALUE0 + i * 2 + 2));
+	if (i < n)
+		pr_err("CR3 target%u=%016lx\n",
+		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2));
+	if (secondary_exec_control & SECONDARY_EXEC_PAUSE_LOOP_EXITING)
+		pr_err("PLE Gap=%08x Window=%08x\n",
+		       vmcs_read32(PLE_GAP), vmcs_read32(PLE_WINDOW));
+	if (secondary_exec_control & SECONDARY_EXEC_ENABLE_VPID)
+		pr_err("Virtual processor ID = 0x%04x\n",
+		       vmcs_read16(VIRTUAL_PROCESSOR_ID));
+}
+
+/*
+ * The guest has exited.  See if we can fix it or if we need userspace
+ * assistance.
+ */
+static int vmx_handle_exit(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u32 exit_reason = vmx->exit_reason;
+	u32 vectoring_info = vmx->idt_vectoring_info;
+
+	trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX);
+
+	/*
+	 * Flush logged GPAs PML buffer, this will make dirty_bitmap more
+	 * updated. Another good is, in kvm_vm_ioctl_get_dirty_log, before
+	 * querying dirty_bitmap, we only need to kick all vcpus out of guest
+	 * mode as if vcpus is in root mode, the PML buffer must has been
+	 * flushed already.
+	 */
+	if (enable_pml)
+		vmx_flush_pml_buffer(vcpu);
+
+	/* If guest state is invalid, start emulating */
+	if (vmx->emulation_required)
+		return handle_invalid_guest_state(vcpu);
+
+	if (is_guest_mode(vcpu) && nested_vmx_exit_reflected(vcpu, exit_reason))
+		return nested_vmx_reflect_vmexit(vcpu, exit_reason);
+
+	if (exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY) {
+		dump_vmcs();
+		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+		vcpu->run->fail_entry.hardware_entry_failure_reason
+			= exit_reason;
+		return 0;
+	}
+
+	if (unlikely(vmx->fail)) {
+		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+		vcpu->run->fail_entry.hardware_entry_failure_reason
+			= vmcs_read32(VM_INSTRUCTION_ERROR);
+		return 0;
+	}
+
+	/*
+	 * Note:
+	 * Do not try to fix EXIT_REASON_EPT_MISCONFIG if it caused by
+	 * delivery event since it indicates guest is accessing MMIO.
+	 * The vm-exit can be triggered again after return to guest that
+	 * will cause infinite loop.
+	 */
+	if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
+			(exit_reason != EXIT_REASON_EXCEPTION_NMI &&
+			exit_reason != EXIT_REASON_EPT_VIOLATION &&
+			exit_reason != EXIT_REASON_PML_FULL &&
+			exit_reason != EXIT_REASON_TASK_SWITCH)) {
+		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
+		vcpu->run->internal.ndata = 3;
+		vcpu->run->internal.data[0] = vectoring_info;
+		vcpu->run->internal.data[1] = exit_reason;
+		vcpu->run->internal.data[2] = vcpu->arch.exit_qualification;
+		if (exit_reason == EXIT_REASON_EPT_MISCONFIG) {
+			vcpu->run->internal.ndata++;
+			vcpu->run->internal.data[3] =
+				vmcs_read64(GUEST_PHYSICAL_ADDRESS);
+		}
+		return 0;
+	}
+
+	if (unlikely(!enable_vnmi &&
+		     vmx->loaded_vmcs->soft_vnmi_blocked)) {
+		if (vmx_interrupt_allowed(vcpu)) {
+			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
+		} else if (vmx->loaded_vmcs->vnmi_blocked_time > 1000000000LL &&
+			   vcpu->arch.nmi_pending) {
+			/*
+			 * This CPU don't support us in finding the end of an
+			 * NMI-blocked window if the guest runs with IRQs
+			 * disabled. So we pull the trigger after 1 s of
+			 * futile waiting, but inform the user about this.
+			 */
+			printk(KERN_WARNING "%s: Breaking out of NMI-blocked "
+			       "state on VCPU %d after 1 s timeout\n",
+			       __func__, vcpu->vcpu_id);
+			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
+		}
+	}
+
+	if (exit_reason < kvm_vmx_max_exit_handlers
+	    && kvm_vmx_exit_handlers[exit_reason])
+		return kvm_vmx_exit_handlers[exit_reason](vcpu);
+	else {
+		vcpu_unimpl(vcpu, "vmx: unexpected exit reason 0x%x\n",
+				exit_reason);
+		kvm_queue_exception(vcpu, UD_VECTOR);
+		return 1;
+	}
+}
+
+/*
+ * Software based L1D cache flush which is used when microcode providing
+ * the cache control MSR is not loaded.
+ *
+ * The L1D cache is 32 KiB on Nehalem and later microarchitectures, but to
+ * flush it is required to read in 64 KiB because the replacement algorithm
+ * is not exactly LRU. This could be sized at runtime via topology
+ * information but as all relevant affected CPUs have 32KiB L1D cache size
+ * there is no point in doing so.
+ */
+static void vmx_l1d_flush(struct kvm_vcpu *vcpu)
+{
+	int size = PAGE_SIZE << L1D_CACHE_ORDER;
+
+	/*
+	 * This code is only executed when the the flush mode is 'cond' or
+	 * 'always'
+	 */
+	if (static_branch_likely(&vmx_l1d_flush_cond)) {
+		bool flush_l1d;
+
+		/*
+		 * Clear the per-vcpu flush bit, it gets set again
+		 * either from vcpu_run() or from one of the unsafe
+		 * VMEXIT handlers.
+		 */
+		flush_l1d = vcpu->arch.l1tf_flush_l1d;
+		vcpu->arch.l1tf_flush_l1d = false;
+
+		/*
+		 * Clear the per-cpu flush bit, it gets set again from
+		 * the interrupt handlers.
+		 */
+		flush_l1d |= kvm_get_cpu_l1tf_flush_l1d();
+		kvm_clear_cpu_l1tf_flush_l1d();
+
+		if (!flush_l1d)
+			return;
+	}
+
+	vcpu->stat.l1d_flush++;
+
+	if (static_cpu_has(X86_FEATURE_FLUSH_L1D)) {
+		wrmsrl(MSR_IA32_FLUSH_CMD, L1D_FLUSH);
+		return;
+	}
+
+	asm volatile(
+		/* First ensure the pages are in the TLB */
+		"xorl	%%eax, %%eax\n"
+		".Lpopulate_tlb:\n\t"
+		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
+		"addl	$4096, %%eax\n\t"
+		"cmpl	%%eax, %[size]\n\t"
+		"jne	.Lpopulate_tlb\n\t"
+		"xorl	%%eax, %%eax\n\t"
+		"cpuid\n\t"
+		/* Now fill the cache */
+		"xorl	%%eax, %%eax\n"
+		".Lfill_cache:\n"
+		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
+		"addl	$64, %%eax\n\t"
+		"cmpl	%%eax, %[size]\n\t"
+		"jne	.Lfill_cache\n\t"
+		"lfence\n"
+		:: [flush_pages] "r" (vmx_l1d_flush_pages),
+		    [size] "r" (size)
+		: "eax", "ebx", "ecx", "edx");
+}
+
+static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+	if (is_guest_mode(vcpu) &&
+		nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
+		return;
+
+	if (irr == -1 || tpr < irr) {
+		vmcs_write32(TPR_THRESHOLD, 0);
+		return;
+	}
+
+	vmcs_write32(TPR_THRESHOLD, irr);
+}
+
+void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
+{
+	u32 sec_exec_control;
+
+	if (!lapic_in_kernel(vcpu))
+		return;
+
+	if (!flexpriority_enabled &&
+	    !cpu_has_vmx_virtualize_x2apic_mode())
+		return;
+
+	/* Postpone execution until vmcs01 is the current VMCS. */
+	if (is_guest_mode(vcpu)) {
+		to_vmx(vcpu)->nested.change_vmcs01_virtual_apic_mode = true;
+		return;
+	}
+
+	sec_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
+	sec_exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+			      SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE);
+
+	switch (kvm_get_apic_mode(vcpu)) {
+	case LAPIC_MODE_INVALID:
+		WARN_ONCE(true, "Invalid local APIC state");
+	case LAPIC_MODE_DISABLED:
+		break;
+	case LAPIC_MODE_XAPIC:
+		if (flexpriority_enabled) {
+			sec_exec_control |=
+				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+			vmx_flush_tlb(vcpu, true);
+		}
+		break;
+	case LAPIC_MODE_X2APIC:
+		if (cpu_has_vmx_virtualize_x2apic_mode())
+			sec_exec_control |=
+				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
+		break;
+	}
+	vmcs_write32(SECONDARY_VM_EXEC_CONTROL, sec_exec_control);
+
+	vmx_update_msr_bitmap(vcpu);
+}
+
+static void vmx_set_apic_access_page_addr(struct kvm_vcpu *vcpu, hpa_t hpa)
+{
+	if (!is_guest_mode(vcpu)) {
+		vmcs_write64(APIC_ACCESS_ADDR, hpa);
+		vmx_flush_tlb(vcpu, true);
+	}
+}
+
+static void vmx_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
+{
+	u16 status;
+	u8 old;
+
+	if (max_isr == -1)
+		max_isr = 0;
+
+	status = vmcs_read16(GUEST_INTR_STATUS);
+	old = status >> 8;
+	if (max_isr != old) {
+		status &= 0xff;
+		status |= max_isr << 8;
+		vmcs_write16(GUEST_INTR_STATUS, status);
+	}
+}
+
+static void vmx_set_rvi(int vector)
+{
+	u16 status;
+	u8 old;
+
+	if (vector == -1)
+		vector = 0;
+
+	status = vmcs_read16(GUEST_INTR_STATUS);
+	old = (u8)status & 0xff;
+	if ((u8)vector != old) {
+		status &= ~0xff;
+		status |= (u8)vector;
+		vmcs_write16(GUEST_INTR_STATUS, status);
+	}
+}
+
+static void vmx_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)
+{
+	/*
+	 * When running L2, updating RVI is only relevant when
+	 * vmcs12 virtual-interrupt-delivery enabled.
+	 * However, it can be enabled only when L1 also
+	 * intercepts external-interrupts and in that case
+	 * we should not update vmcs02 RVI but instead intercept
+	 * interrupt. Therefore, do nothing when running L2.
+	 */
+	if (!is_guest_mode(vcpu))
+		vmx_set_rvi(max_irr);
+}
+
+static int vmx_sync_pir_to_irr(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int max_irr;
+	bool max_irr_updated;
+
+	WARN_ON(!vcpu->arch.apicv_active);
+	if (pi_test_on(&vmx->pi_desc)) {
+		pi_clear_on(&vmx->pi_desc);
+		/*
+		 * IOMMU can write to PIR.ON, so the barrier matters even on UP.
+		 * But on x86 this is just a compiler barrier anyway.
+		 */
+		smp_mb__after_atomic();
+		max_irr_updated =
+			kvm_apic_update_irr(vcpu, vmx->pi_desc.pir, &max_irr);
+
+		/*
+		 * If we are running L2 and L1 has a new pending interrupt
+		 * which can be injected, we should re-evaluate
+		 * what should be done with this new L1 interrupt.
+		 * If L1 intercepts external-interrupts, we should
+		 * exit from L2 to L1. Otherwise, interrupt should be
+		 * delivered directly to L2.
+		 */
+		if (is_guest_mode(vcpu) && max_irr_updated) {
+			if (nested_exit_on_intr(vcpu))
+				kvm_vcpu_exiting_guest_mode(vcpu);
+			else
+				kvm_make_request(KVM_REQ_EVENT, vcpu);
+		}
+	} else {
+		max_irr = kvm_lapic_find_highest_irr(vcpu);
+	}
+	vmx_hwapic_irr_update(vcpu, max_irr);
+	return max_irr;
+}
+
+static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
+{
+	if (!kvm_vcpu_apicv_active(vcpu))
+		return;
+
+	vmcs_write64(EOI_EXIT_BITMAP0, eoi_exit_bitmap[0]);
+	vmcs_write64(EOI_EXIT_BITMAP1, eoi_exit_bitmap[1]);
+	vmcs_write64(EOI_EXIT_BITMAP2, eoi_exit_bitmap[2]);
+	vmcs_write64(EOI_EXIT_BITMAP3, eoi_exit_bitmap[3]);
+}
+
+static void vmx_apicv_post_state_restore(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	pi_clear_on(&vmx->pi_desc);
+	memset(vmx->pi_desc.pir, 0, sizeof(vmx->pi_desc.pir));
+}
+
+static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
+{
+	u32 exit_intr_info = 0;
+	u16 basic_exit_reason = (u16)vmx->exit_reason;
+
+	if (!(basic_exit_reason == EXIT_REASON_MCE_DURING_VMENTRY
+	      || basic_exit_reason == EXIT_REASON_EXCEPTION_NMI))
+		return;
+
+	if (!(vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
+		exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+	vmx->exit_intr_info = exit_intr_info;
+
+	/* if exit due to PF check for async PF */
+	if (is_page_fault(exit_intr_info))
+		vmx->vcpu.arch.apf.host_apf_reason = kvm_read_and_reset_pf_reason();
+
+	/* Handle machine checks before interrupts are enabled */
+	if (basic_exit_reason == EXIT_REASON_MCE_DURING_VMENTRY ||
+	    is_machine_check(exit_intr_info))
+		kvm_machine_check();
+
+	/* We need to handle NMIs before interrupts are enabled */
+	if (is_nmi(exit_intr_info)) {
+		kvm_before_interrupt(&vmx->vcpu);
+		asm("int $2");
+		kvm_after_interrupt(&vmx->vcpu);
+	}
+}
+
+static void vmx_handle_external_intr(struct kvm_vcpu *vcpu)
+{
+	u32 exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+
+	if ((exit_intr_info & (INTR_INFO_VALID_MASK | INTR_INFO_INTR_TYPE_MASK))
+			== (INTR_INFO_VALID_MASK | INTR_TYPE_EXT_INTR)) {
+		unsigned int vector;
+		unsigned long entry;
+		gate_desc *desc;
+		struct vcpu_vmx *vmx = to_vmx(vcpu);
+#ifdef CONFIG_X86_64
+		unsigned long tmp;
+#endif
+
+		vector =  exit_intr_info & INTR_INFO_VECTOR_MASK;
+		desc = (gate_desc *)vmx->host_idt_base + vector;
+		entry = gate_offset(desc);
+		asm volatile(
+#ifdef CONFIG_X86_64
+			"mov %%" _ASM_SP ", %[sp]\n\t"
+			"and $0xfffffffffffffff0, %%" _ASM_SP "\n\t"
+			"push $%c[ss]\n\t"
+			"push %[sp]\n\t"
+#endif
+			"pushf\n\t"
+			__ASM_SIZE(push) " $%c[cs]\n\t"
+			CALL_NOSPEC
+			:
+#ifdef CONFIG_X86_64
+			[sp]"=&r"(tmp),
+#endif
+			ASM_CALL_CONSTRAINT
+			:
+			THUNK_TARGET(entry),
+			[ss]"i"(__KERNEL_DS),
+			[cs]"i"(__KERNEL_CS)
+			);
+	}
+}
+STACK_FRAME_NON_STANDARD(vmx_handle_external_intr);
+
+static bool vmx_has_emulated_msr(int index)
+{
+	switch (index) {
+	case MSR_IA32_SMBASE:
+		/*
+		 * We cannot do SMM unless we can run the guest in big
+		 * real mode.
+		 */
+		return enable_unrestricted_guest || emulate_invalid_guest_state;
+	case MSR_AMD64_VIRT_SPEC_CTRL:
+		/* This is AMD only.  */
+		return false;
+	default:
+		return true;
+	}
+}
+
+static bool vmx_pt_supported(void)
+{
+	return pt_mode == PT_MODE_HOST_GUEST;
+}
+
+static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
+{
+	u32 exit_intr_info;
+	bool unblock_nmi;
+	u8 vector;
+	bool idtv_info_valid;
+
+	idtv_info_valid = vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK;
+
+	if (enable_vnmi) {
+		if (vmx->loaded_vmcs->nmi_known_unmasked)
+			return;
+		/*
+		 * Can't use vmx->exit_intr_info since we're not sure what
+		 * the exit reason is.
+		 */
+		exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
+		unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0;
+		vector = exit_intr_info & INTR_INFO_VECTOR_MASK;
+		/*
+		 * SDM 3: 27.7.1.2 (September 2008)
+		 * Re-set bit "block by NMI" before VM entry if vmexit caused by
+		 * a guest IRET fault.
+		 * SDM 3: 23.2.2 (September 2008)
+		 * Bit 12 is undefined in any of the following cases:
+		 *  If the VM exit sets the valid bit in the IDT-vectoring
+		 *   information field.
+		 *  If the VM exit is due to a double fault.
+		 */
+		if ((exit_intr_info & INTR_INFO_VALID_MASK) && unblock_nmi &&
+		    vector != DF_VECTOR && !idtv_info_valid)
+			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
+				      GUEST_INTR_STATE_NMI);
+		else
+			vmx->loaded_vmcs->nmi_known_unmasked =
+				!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO)
+				  & GUEST_INTR_STATE_NMI);
+	} else if (unlikely(vmx->loaded_vmcs->soft_vnmi_blocked))
+		vmx->loaded_vmcs->vnmi_blocked_time +=
+			ktime_to_ns(ktime_sub(ktime_get(),
+					      vmx->loaded_vmcs->entry_time));
+}
+
+static void __vmx_complete_interrupts(struct kvm_vcpu *vcpu,
+				      u32 idt_vectoring_info,
+				      int instr_len_field,
+				      int error_code_field)
+{
+	u8 vector;
+	int type;
+	bool idtv_info_valid;
+
+	idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK;
+
+	vcpu->arch.nmi_injected = false;
+	kvm_clear_exception_queue(vcpu);
+	kvm_clear_interrupt_queue(vcpu);
+
+	if (!idtv_info_valid)
+		return;
+
+	kvm_make_request(KVM_REQ_EVENT, vcpu);
+
+	vector = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK;
+	type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK;
+
+	switch (type) {
+	case INTR_TYPE_NMI_INTR:
+		vcpu->arch.nmi_injected = true;
+		/*
+		 * SDM 3: 27.7.1.2 (September 2008)
+		 * Clear bit "block by NMI" before VM entry if a NMI
+		 * delivery faulted.
+		 */
+		vmx_set_nmi_mask(vcpu, false);
+		break;
+	case INTR_TYPE_SOFT_EXCEPTION:
+		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
+		/* fall through */
+	case INTR_TYPE_HARD_EXCEPTION:
+		if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) {
+			u32 err = vmcs_read32(error_code_field);
+			kvm_requeue_exception_e(vcpu, vector, err);
+		} else
+			kvm_requeue_exception(vcpu, vector);
+		break;
+	case INTR_TYPE_SOFT_INTR:
+		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
+		/* fall through */
+	case INTR_TYPE_EXT_INTR:
+		kvm_queue_interrupt(vcpu, vector, type == INTR_TYPE_SOFT_INTR);
+		break;
+	default:
+		break;
+	}
+}
+
+static void vmx_complete_interrupts(struct vcpu_vmx *vmx)
+{
+	__vmx_complete_interrupts(&vmx->vcpu, vmx->idt_vectoring_info,
+				  VM_EXIT_INSTRUCTION_LEN,
+				  IDT_VECTORING_ERROR_CODE);
+}
+
+static void vmx_cancel_injection(struct kvm_vcpu *vcpu)
+{
+	__vmx_complete_interrupts(vcpu,
+				  vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
+				  VM_ENTRY_INSTRUCTION_LEN,
+				  VM_ENTRY_EXCEPTION_ERROR_CODE);
+
+	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
+}
+
+static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
+{
+	int i, nr_msrs;
+	struct perf_guest_switch_msr *msrs;
+
+	msrs = perf_guest_get_msrs(&nr_msrs);
+
+	if (!msrs)
+		return;
+
+	for (i = 0; i < nr_msrs; i++)
+		if (msrs[i].host == msrs[i].guest)
+			clear_atomic_switch_msr(vmx, msrs[i].msr);
+		else
+			add_atomic_switch_msr(vmx, msrs[i].msr, msrs[i].guest,
+					msrs[i].host, false);
+}
+
+static void vmx_arm_hv_timer(struct vcpu_vmx *vmx, u32 val)
+{
+	vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, val);
+	if (!vmx->loaded_vmcs->hv_timer_armed)
+		vmcs_set_bits(PIN_BASED_VM_EXEC_CONTROL,
+			      PIN_BASED_VMX_PREEMPTION_TIMER);
+	vmx->loaded_vmcs->hv_timer_armed = true;
+}
+
+static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	u64 tscl;
+	u32 delta_tsc;
+
+	if (vmx->req_immediate_exit) {
+		vmx_arm_hv_timer(vmx, 0);
+		return;
+	}
+
+	if (vmx->hv_deadline_tsc != -1) {
+		tscl = rdtsc();
+		if (vmx->hv_deadline_tsc > tscl)
+			/* set_hv_timer ensures the delta fits in 32-bits */
+			delta_tsc = (u32)((vmx->hv_deadline_tsc - tscl) >>
+				cpu_preemption_timer_multi);
+		else
+			delta_tsc = 0;
+
+		vmx_arm_hv_timer(vmx, delta_tsc);
+		return;
+	}
+
+	if (vmx->loaded_vmcs->hv_timer_armed)
+		vmcs_clear_bits(PIN_BASED_VM_EXEC_CONTROL,
+				PIN_BASED_VMX_PREEMPTION_TIMER);
+	vmx->loaded_vmcs->hv_timer_armed = false;
+}
+
+static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	unsigned long cr3, cr4, evmcs_rsp;
+
+	/* Record the guest's net vcpu time for enforced NMI injections. */
+	if (unlikely(!enable_vnmi &&
+		     vmx->loaded_vmcs->soft_vnmi_blocked))
+		vmx->loaded_vmcs->entry_time = ktime_get();
+
+	/* Don't enter VMX if guest state is invalid, let the exit handler
+	   start emulation until we arrive back to a valid state */
+	if (vmx->emulation_required)
+		return;
+
+	if (vmx->ple_window_dirty) {
+		vmx->ple_window_dirty = false;
+		vmcs_write32(PLE_WINDOW, vmx->ple_window);
+	}
+
+	if (vmx->nested.need_vmcs12_sync)
+		nested_sync_from_vmcs12(vcpu);
+
+	if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty))
+		vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
+	if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty))
+		vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
+
+	cr3 = __get_current_cr3_fast();
+	if (unlikely(cr3 != vmx->loaded_vmcs->host_state.cr3)) {
+		vmcs_writel(HOST_CR3, cr3);
+		vmx->loaded_vmcs->host_state.cr3 = cr3;
+	}
+
+	cr4 = cr4_read_shadow();
+	if (unlikely(cr4 != vmx->loaded_vmcs->host_state.cr4)) {
+		vmcs_writel(HOST_CR4, cr4);
+		vmx->loaded_vmcs->host_state.cr4 = cr4;
+	}
+
+	/* When single-stepping over STI and MOV SS, we must clear the
+	 * corresponding interruptibility bits in the guest state. Otherwise
+	 * vmentry fails as it then expects bit 14 (BS) in pending debug
+	 * exceptions being set, but that's not correct for the guest debugging
+	 * case. */
+	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
+		vmx_set_interrupt_shadow(vcpu, 0);
+
+	if (static_cpu_has(X86_FEATURE_PKU) &&
+	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE) &&
+	    vcpu->arch.pkru != vmx->host_pkru)
+		__write_pkru(vcpu->arch.pkru);
+
+	pt_guest_enter(vmx);
+
+	atomic_switch_perf_msrs(vmx);
+
+	vmx_update_hv_timer(vcpu);
+
+	/*
+	 * If this vCPU has touched SPEC_CTRL, restore the guest's value if
+	 * it's non-zero. Since vmentry is serialising on affected CPUs, there
+	 * is no need to worry about the conditional branch over the wrmsr
+	 * being speculatively taken.
+	 */
+	x86_spec_ctrl_set_guest(vmx->spec_ctrl, 0);
+
+	vmx->__launched = vmx->loaded_vmcs->launched;
+
+	evmcs_rsp = static_branch_unlikely(&enable_evmcs) ?
+		(unsigned long)&current_evmcs->host_rsp : 0;
+
+	if (static_branch_unlikely(&vmx_l1d_should_flush))
+		vmx_l1d_flush(vcpu);
+
+	asm(
+		/* Store host registers */
+		"push %%" _ASM_DX "; push %%" _ASM_BP ";"
+		"push %%" _ASM_CX " \n\t" /* placeholder for guest rcx */
+		"push %%" _ASM_CX " \n\t"
+		"sub $%c[wordsize], %%" _ASM_SP "\n\t" /* temporarily adjust RSP for CALL */
+		"cmp %%" _ASM_SP ", %c[host_rsp](%%" _ASM_CX ") \n\t"
+		"je 1f \n\t"
+		"mov %%" _ASM_SP ", %c[host_rsp](%%" _ASM_CX ") \n\t"
+		/* Avoid VMWRITE when Enlightened VMCS is in use */
+		"test %%" _ASM_SI ", %%" _ASM_SI " \n\t"
+		"jz 2f \n\t"
+		"mov %%" _ASM_SP ", (%%" _ASM_SI ") \n\t"
+		"jmp 1f \n\t"
+		"2: \n\t"
+		__ex("vmwrite %%" _ASM_SP ", %%" _ASM_DX) "\n\t"
+		"1: \n\t"
+		"add $%c[wordsize], %%" _ASM_SP "\n\t" /* un-adjust RSP */
+
+		/* Reload cr2 if changed */
+		"mov %c[cr2](%%" _ASM_CX "), %%" _ASM_AX " \n\t"
+		"mov %%cr2, %%" _ASM_DX " \n\t"
+		"cmp %%" _ASM_AX ", %%" _ASM_DX " \n\t"
+		"je 3f \n\t"
+		"mov %%" _ASM_AX", %%cr2 \n\t"
+		"3: \n\t"
+		/* Check if vmlaunch or vmresume is needed */
+		"cmpl $0, %c[launched](%%" _ASM_CX ") \n\t"
+		/* Load guest registers.  Don't clobber flags. */
+		"mov %c[rax](%%" _ASM_CX "), %%" _ASM_AX " \n\t"
+		"mov %c[rbx](%%" _ASM_CX "), %%" _ASM_BX " \n\t"
+		"mov %c[rdx](%%" _ASM_CX "), %%" _ASM_DX " \n\t"
+		"mov %c[rsi](%%" _ASM_CX "), %%" _ASM_SI " \n\t"
+		"mov %c[rdi](%%" _ASM_CX "), %%" _ASM_DI " \n\t"
+		"mov %c[rbp](%%" _ASM_CX "), %%" _ASM_BP " \n\t"
+#ifdef CONFIG_X86_64
+		"mov %c[r8](%%" _ASM_CX "),  %%r8  \n\t"
+		"mov %c[r9](%%" _ASM_CX "),  %%r9  \n\t"
+		"mov %c[r10](%%" _ASM_CX "), %%r10 \n\t"
+		"mov %c[r11](%%" _ASM_CX "), %%r11 \n\t"
+		"mov %c[r12](%%" _ASM_CX "), %%r12 \n\t"
+		"mov %c[r13](%%" _ASM_CX "), %%r13 \n\t"
+		"mov %c[r14](%%" _ASM_CX "), %%r14 \n\t"
+		"mov %c[r15](%%" _ASM_CX "), %%r15 \n\t"
+#endif
+		/* Load guest RCX.  This kills the vmx_vcpu pointer! */
+		"mov %c[rcx](%%" _ASM_CX "), %%" _ASM_CX " \n\t"
+
+		/* Enter guest mode */
+		"call vmx_vmenter\n\t"
+
+		/* Save guest's RCX to the stack placeholder (see above) */
+		"mov %%" _ASM_CX ", %c[wordsize](%%" _ASM_SP ") \n\t"
+
+		/* Load host's RCX, i.e. the vmx_vcpu pointer */
+		"pop %%" _ASM_CX " \n\t"
+
+		/* Set vmx->fail based on EFLAGS.{CF,ZF} */
+		"setbe %c[fail](%%" _ASM_CX ")\n\t"
+
+		/* Save all guest registers, including RCX from the stack */
+		"mov %%" _ASM_AX ", %c[rax](%%" _ASM_CX ") \n\t"
+		"mov %%" _ASM_BX ", %c[rbx](%%" _ASM_CX ") \n\t"
+		__ASM_SIZE(pop) " %c[rcx](%%" _ASM_CX ") \n\t"
+		"mov %%" _ASM_DX ", %c[rdx](%%" _ASM_CX ") \n\t"
+		"mov %%" _ASM_SI ", %c[rsi](%%" _ASM_CX ") \n\t"
+		"mov %%" _ASM_DI ", %c[rdi](%%" _ASM_CX ") \n\t"
+		"mov %%" _ASM_BP ", %c[rbp](%%" _ASM_CX ") \n\t"
+#ifdef CONFIG_X86_64
+		"mov %%r8,  %c[r8](%%" _ASM_CX ") \n\t"
+		"mov %%r9,  %c[r9](%%" _ASM_CX ") \n\t"
+		"mov %%r10, %c[r10](%%" _ASM_CX ") \n\t"
+		"mov %%r11, %c[r11](%%" _ASM_CX ") \n\t"
+		"mov %%r12, %c[r12](%%" _ASM_CX ") \n\t"
+		"mov %%r13, %c[r13](%%" _ASM_CX ") \n\t"
+		"mov %%r14, %c[r14](%%" _ASM_CX ") \n\t"
+		"mov %%r15, %c[r15](%%" _ASM_CX ") \n\t"
+		/*
+		* Clear host registers marked as clobbered to prevent
+		* speculative use.
+		*/
+		"xor %%r8d,  %%r8d \n\t"
+		"xor %%r9d,  %%r9d \n\t"
+		"xor %%r10d, %%r10d \n\t"
+		"xor %%r11d, %%r11d \n\t"
+		"xor %%r12d, %%r12d \n\t"
+		"xor %%r13d, %%r13d \n\t"
+		"xor %%r14d, %%r14d \n\t"
+		"xor %%r15d, %%r15d \n\t"
+#endif
+		"mov %%cr2, %%" _ASM_AX "   \n\t"
+		"mov %%" _ASM_AX ", %c[cr2](%%" _ASM_CX ") \n\t"
+
+		"xor %%eax, %%eax \n\t"
+		"xor %%ebx, %%ebx \n\t"
+		"xor %%esi, %%esi \n\t"
+		"xor %%edi, %%edi \n\t"
+		"pop  %%" _ASM_BP "; pop  %%" _ASM_DX " \n\t"
+	      : ASM_CALL_CONSTRAINT
+	      : "c"(vmx), "d"((unsigned long)HOST_RSP), "S"(evmcs_rsp),
+		[launched]"i"(offsetof(struct vcpu_vmx, __launched)),
+		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
+		[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)),
+		[rax]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RAX])),
+		[rbx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBX])),
+		[rcx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RCX])),
+		[rdx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDX])),
+		[rsi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RSI])),
+		[rdi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDI])),
+		[rbp]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBP])),
+#ifdef CONFIG_X86_64
+		[r8]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R8])),
+		[r9]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R9])),
+		[r10]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R10])),
+		[r11]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R11])),
+		[r12]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R12])),
+		[r13]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R13])),
+		[r14]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R14])),
+		[r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])),
+#endif
+		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
+		[wordsize]"i"(sizeof(ulong))
+	      : "cc", "memory"
+#ifdef CONFIG_X86_64
+		, "rax", "rbx", "rdi"
+		, "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
+#else
+		, "eax", "ebx", "edi"
+#endif
+	      );
+
+	/*
+	 * We do not use IBRS in the kernel. If this vCPU has used the
+	 * SPEC_CTRL MSR it may have left it on; save the value and
+	 * turn it off. This is much more efficient than blindly adding
+	 * it to the atomic save/restore list. Especially as the former
+	 * (Saving guest MSRs on vmexit) doesn't even exist in KVM.
+	 *
+	 * For non-nested case:
+	 * If the L01 MSR bitmap does not intercept the MSR, then we need to
+	 * save it.
+	 *
+	 * For nested case:
+	 * If the L02 MSR bitmap does not intercept the MSR, then we need to
+	 * save it.
+	 */
+	if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
+		vmx->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);
+
+	x86_spec_ctrl_restore_host(vmx->spec_ctrl, 0);
+
+	/* Eliminate branch target predictions from guest mode */
+	vmexit_fill_RSB();
+
+	/* All fields are clean at this point */
+	if (static_branch_unlikely(&enable_evmcs))
+		current_evmcs->hv_clean_fields |=
+			HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
+
+	/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
+	if (vmx->host_debugctlmsr)
+		update_debugctlmsr(vmx->host_debugctlmsr);
+
+#ifndef CONFIG_X86_64
+	/*
+	 * The sysexit path does not restore ds/es, so we must set them to
+	 * a reasonable value ourselves.
+	 *
+	 * We can't defer this to vmx_prepare_switch_to_host() since that
+	 * function may be executed in interrupt context, which saves and
+	 * restore segments around it, nullifying its effect.
+	 */
+	loadsegment(ds, __USER_DS);
+	loadsegment(es, __USER_DS);
+#endif
+
+	vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
+				  | (1 << VCPU_EXREG_RFLAGS)
+				  | (1 << VCPU_EXREG_PDPTR)
+				  | (1 << VCPU_EXREG_SEGMENTS)
+				  | (1 << VCPU_EXREG_CR3));
+	vcpu->arch.regs_dirty = 0;
+
+	pt_guest_exit(vmx);
+
+	/*
+	 * eager fpu is enabled if PKEY is supported and CR4 is switched
+	 * back on host, so it is safe to read guest PKRU from current
+	 * XSAVE.
+	 */
+	if (static_cpu_has(X86_FEATURE_PKU) &&
+	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE)) {
+		vcpu->arch.pkru = __read_pkru();
+		if (vcpu->arch.pkru != vmx->host_pkru)
+			__write_pkru(vmx->host_pkru);
+	}
+
+	vmx->nested.nested_run_pending = 0;
+	vmx->idt_vectoring_info = 0;
+
+	vmx->exit_reason = vmx->fail ? 0xdead : vmcs_read32(VM_EXIT_REASON);
+	if (vmx->fail || (vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
+		return;
+
+	vmx->loaded_vmcs->launched = 1;
+	vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
+
+	vmx_complete_atomic_exit(vmx);
+	vmx_recover_nmi_blocking(vmx);
+	vmx_complete_interrupts(vmx);
+}
+STACK_FRAME_NON_STANDARD(vmx_vcpu_run);
+
+static struct kvm *vmx_vm_alloc(void)
+{
+	struct kvm_vmx *kvm_vmx = vzalloc(sizeof(struct kvm_vmx));
+	return &kvm_vmx->kvm;
+}
+
+static void vmx_vm_free(struct kvm *kvm)
+{
+	vfree(to_kvm_vmx(kvm));
+}
+
+static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (enable_pml)
+		vmx_destroy_pml_buffer(vmx);
+	free_vpid(vmx->vpid);
+	leave_guest_mode(vcpu);
+	nested_vmx_free_vcpu(vcpu);
+	free_loaded_vmcs(vmx->loaded_vmcs);
+	kfree(vmx->guest_msrs);
+	kvm_vcpu_uninit(vcpu);
+	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.guest_fpu);
+	kmem_cache_free(kvm_vcpu_cache, vmx);
+}
+
+static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
+{
+	int err;
+	struct vcpu_vmx *vmx = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
+	unsigned long *msr_bitmap;
+	int cpu;
+
+	if (!vmx)
+		return ERR_PTR(-ENOMEM);
+
+	vmx->vcpu.arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache, GFP_KERNEL);
+	if (!vmx->vcpu.arch.guest_fpu) {
+		printk(KERN_ERR "kvm: failed to allocate vcpu's fpu\n");
+		err = -ENOMEM;
+		goto free_partial_vcpu;
+	}
+
+	vmx->vpid = allocate_vpid();
+
+	err = kvm_vcpu_init(&vmx->vcpu, kvm, id);
+	if (err)
+		goto free_vcpu;
+
+	err = -ENOMEM;
+
+	/*
+	 * If PML is turned on, failure on enabling PML just results in failure
+	 * of creating the vcpu, therefore we can simplify PML logic (by
+	 * avoiding dealing with cases, such as enabling PML partially on vcpus
+	 * for the guest, etc.
+	 */
+	if (enable_pml) {
+		vmx->pml_pg = alloc_page(GFP_KERNEL | __GFP_ZERO);
+		if (!vmx->pml_pg)
+			goto uninit_vcpu;
+	}
+
+	vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) * sizeof(vmx->guest_msrs[0])
+		     > PAGE_SIZE);
+
+	if (!vmx->guest_msrs)
+		goto free_pml;
+
+	err = alloc_loaded_vmcs(&vmx->vmcs01);
+	if (err < 0)
+		goto free_msrs;
+
+	msr_bitmap = vmx->vmcs01.msr_bitmap;
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_TSC, MSR_TYPE_R);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_FS_BASE, MSR_TYPE_RW);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_GS_BASE, MSR_TYPE_RW);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_KERNEL_GS_BASE, MSR_TYPE_RW);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_CS, MSR_TYPE_RW);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_ESP, MSR_TYPE_RW);
+	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_EIP, MSR_TYPE_RW);
+	vmx->msr_bitmap_mode = 0;
+
+	vmx->loaded_vmcs = &vmx->vmcs01;
+	cpu = get_cpu();
+	vmx_vcpu_load(&vmx->vcpu, cpu);
+	vmx->vcpu.cpu = cpu;
+	vmx_vcpu_setup(vmx);
+	vmx_vcpu_put(&vmx->vcpu);
+	put_cpu();
+	if (cpu_need_virtualize_apic_accesses(&vmx->vcpu)) {
+		err = alloc_apic_access_page(kvm);
+		if (err)
+			goto free_vmcs;
+	}
+
+	if (enable_ept && !enable_unrestricted_guest) {
+		err = init_rmode_identity_map(kvm);
+		if (err)
+			goto free_vmcs;
+	}
+
+	if (nested)
+		nested_vmx_setup_ctls_msrs(&vmx->nested.msrs,
+					   vmx_capability.ept,
+					   kvm_vcpu_apicv_active(&vmx->vcpu));
+	else
+		memset(&vmx->nested.msrs, 0, sizeof(vmx->nested.msrs));
+
+	vmx->nested.posted_intr_nv = -1;
+	vmx->nested.current_vmptr = -1ull;
+
+	vmx->msr_ia32_feature_control_valid_bits = FEATURE_CONTROL_LOCKED;
+
+	/*
+	 * Enforce invariant: pi_desc.nv is always either POSTED_INTR_VECTOR
+	 * or POSTED_INTR_WAKEUP_VECTOR.
+	 */
+	vmx->pi_desc.nv = POSTED_INTR_VECTOR;
+	vmx->pi_desc.sn = 1;
+
+	vmx->ept_pointer = INVALID_PAGE;
+
+	return &vmx->vcpu;
+
+free_vmcs:
+	free_loaded_vmcs(vmx->loaded_vmcs);
+free_msrs:
+	kfree(vmx->guest_msrs);
+free_pml:
+	vmx_destroy_pml_buffer(vmx);
+uninit_vcpu:
+	kvm_vcpu_uninit(&vmx->vcpu);
+free_vcpu:
+	free_vpid(vmx->vpid);
+	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.guest_fpu);
+free_partial_vcpu:
+	kmem_cache_free(kvm_vcpu_cache, vmx);
+	return ERR_PTR(err);
+}
+
+#define L1TF_MSG_SMT "L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
+#define L1TF_MSG_L1D "L1TF CPU bug present and virtualization mitigation disabled, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
+
+static int vmx_vm_init(struct kvm *kvm)
+{
+	spin_lock_init(&to_kvm_vmx(kvm)->ept_pointer_lock);
+
+	if (!ple_gap)
+		kvm->arch.pause_in_guest = true;
+
+	if (boot_cpu_has(X86_BUG_L1TF) && enable_ept) {
+		switch (l1tf_mitigation) {
+		case L1TF_MITIGATION_OFF:
+		case L1TF_MITIGATION_FLUSH_NOWARN:
+			/* 'I explicitly don't care' is set */
+			break;
+		case L1TF_MITIGATION_FLUSH:
+		case L1TF_MITIGATION_FLUSH_NOSMT:
+		case L1TF_MITIGATION_FULL:
+			/*
+			 * Warn upon starting the first VM in a potentially
+			 * insecure environment.
+			 */
+			if (cpu_smt_control == CPU_SMT_ENABLED)
+				pr_warn_once(L1TF_MSG_SMT);
+			if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_NEVER)
+				pr_warn_once(L1TF_MSG_L1D);
+			break;
+		case L1TF_MITIGATION_FULL_FORCE:
+			/* Flush is enforced */
+			break;
+		}
+	}
+	return 0;
+}
+
+static void __init vmx_check_processor_compat(void *rtn)
+{
+	struct vmcs_config vmcs_conf;
+	struct vmx_capability vmx_cap;
+
+	*(int *)rtn = 0;
+	if (setup_vmcs_config(&vmcs_conf, &vmx_cap) < 0)
+		*(int *)rtn = -EIO;
+	if (nested)
+		nested_vmx_setup_ctls_msrs(&vmcs_conf.nested, vmx_cap.ept,
+					   enable_apicv);
+	if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) {
+		printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n",
+				smp_processor_id());
+		*(int *)rtn = -EIO;
+	}
+}
+
+static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
+{
+	u8 cache;
+	u64 ipat = 0;
+
+	/* For VT-d and EPT combination
+	 * 1. MMIO: always map as UC
+	 * 2. EPT with VT-d:
+	 *   a. VT-d without snooping control feature: can't guarantee the
+	 *	result, try to trust guest.
+	 *   b. VT-d with snooping control feature: snooping control feature of
+	 *	VT-d engine can guarantee the cache correctness. Just set it
+	 *	to WB to keep consistent with host. So the same as item 3.
+	 * 3. EPT without VT-d: always map as WB and set IPAT=1 to keep
+	 *    consistent with host MTRR
+	 */
+	if (is_mmio) {
+		cache = MTRR_TYPE_UNCACHABLE;
+		goto exit;
+	}
+
+	if (!kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
+		ipat = VMX_EPT_IPAT_BIT;
+		cache = MTRR_TYPE_WRBACK;
+		goto exit;
+	}
+
+	if (kvm_read_cr0(vcpu) & X86_CR0_CD) {
+		ipat = VMX_EPT_IPAT_BIT;
+		if (kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_CD_NW_CLEARED))
+			cache = MTRR_TYPE_WRBACK;
+		else
+			cache = MTRR_TYPE_UNCACHABLE;
+		goto exit;
+	}
+
+	cache = kvm_mtrr_get_guest_memory_type(vcpu, gfn);
+
+exit:
+	return (cache << VMX_EPT_MT_EPTE_SHIFT) | ipat;
+}
+
+static int vmx_get_lpage_level(void)
+{
+	if (enable_ept && !cpu_has_vmx_ept_1g_page())
+		return PT_DIRECTORY_LEVEL;
+	else
+		/* For shadow and EPT supported 1GB page */
+		return PT_PDPE_LEVEL;
+}
+
+static void vmcs_set_secondary_exec_control(u32 new_ctl)
+{
+	/*
+	 * These bits in the secondary execution controls field
+	 * are dynamic, the others are mostly based on the hypervisor
+	 * architecture and the guest's CPUID.  Do not touch the
+	 * dynamic bits.
+	 */
+	u32 mask =
+		SECONDARY_EXEC_SHADOW_VMCS |
+		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
+		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+		SECONDARY_EXEC_DESC;
+
+	u32 cur_ctl = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
+
+	vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
+		     (new_ctl & ~mask) | (cur_ctl & mask));
+}
+
+/*
+ * Generate MSR_IA32_VMX_CR{0,4}_FIXED1 according to CPUID. Only set bits
+ * (indicating "allowed-1") if they are supported in the guest's CPUID.
+ */
+static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct kvm_cpuid_entry2 *entry;
+
+	vmx->nested.msrs.cr0_fixed1 = 0xffffffff;
+	vmx->nested.msrs.cr4_fixed1 = X86_CR4_PCE;
+
+#define cr4_fixed1_update(_cr4_mask, _reg, _cpuid_mask) do {		\
+	if (entry && (entry->_reg & (_cpuid_mask)))			\
+		vmx->nested.msrs.cr4_fixed1 |= (_cr4_mask);	\
+} while (0)
+
+	entry = kvm_find_cpuid_entry(vcpu, 0x1, 0);
+	cr4_fixed1_update(X86_CR4_VME,        edx, bit(X86_FEATURE_VME));
+	cr4_fixed1_update(X86_CR4_PVI,        edx, bit(X86_FEATURE_VME));
+	cr4_fixed1_update(X86_CR4_TSD,        edx, bit(X86_FEATURE_TSC));
+	cr4_fixed1_update(X86_CR4_DE,         edx, bit(X86_FEATURE_DE));
+	cr4_fixed1_update(X86_CR4_PSE,        edx, bit(X86_FEATURE_PSE));
+	cr4_fixed1_update(X86_CR4_PAE,        edx, bit(X86_FEATURE_PAE));
+	cr4_fixed1_update(X86_CR4_MCE,        edx, bit(X86_FEATURE_MCE));
+	cr4_fixed1_update(X86_CR4_PGE,        edx, bit(X86_FEATURE_PGE));
+	cr4_fixed1_update(X86_CR4_OSFXSR,     edx, bit(X86_FEATURE_FXSR));
+	cr4_fixed1_update(X86_CR4_OSXMMEXCPT, edx, bit(X86_FEATURE_XMM));
+	cr4_fixed1_update(X86_CR4_VMXE,       ecx, bit(X86_FEATURE_VMX));
+	cr4_fixed1_update(X86_CR4_SMXE,       ecx, bit(X86_FEATURE_SMX));
+	cr4_fixed1_update(X86_CR4_PCIDE,      ecx, bit(X86_FEATURE_PCID));
+	cr4_fixed1_update(X86_CR4_OSXSAVE,    ecx, bit(X86_FEATURE_XSAVE));
+
+	entry = kvm_find_cpuid_entry(vcpu, 0x7, 0);
+	cr4_fixed1_update(X86_CR4_FSGSBASE,   ebx, bit(X86_FEATURE_FSGSBASE));
+	cr4_fixed1_update(X86_CR4_SMEP,       ebx, bit(X86_FEATURE_SMEP));
+	cr4_fixed1_update(X86_CR4_SMAP,       ebx, bit(X86_FEATURE_SMAP));
+	cr4_fixed1_update(X86_CR4_PKE,        ecx, bit(X86_FEATURE_PKU));
+	cr4_fixed1_update(X86_CR4_UMIP,       ecx, bit(X86_FEATURE_UMIP));
+
+#undef cr4_fixed1_update
+}
+
+static void nested_vmx_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (kvm_mpx_supported()) {
+		bool mpx_enabled = guest_cpuid_has(vcpu, X86_FEATURE_MPX);
+
+		if (mpx_enabled) {
+			vmx->nested.msrs.entry_ctls_high |= VM_ENTRY_LOAD_BNDCFGS;
+			vmx->nested.msrs.exit_ctls_high |= VM_EXIT_CLEAR_BNDCFGS;
+		} else {
+			vmx->nested.msrs.entry_ctls_high &= ~VM_ENTRY_LOAD_BNDCFGS;
+			vmx->nested.msrs.exit_ctls_high &= ~VM_EXIT_CLEAR_BNDCFGS;
+		}
+	}
+}
+
+static void update_intel_pt_cfg(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	struct kvm_cpuid_entry2 *best = NULL;
+	int i;
+
+	for (i = 0; i < PT_CPUID_LEAVES; i++) {
+		best = kvm_find_cpuid_entry(vcpu, 0x14, i);
+		if (!best)
+			return;
+		vmx->pt_desc.caps[CPUID_EAX + i*PT_CPUID_REGS_NUM] = best->eax;
+		vmx->pt_desc.caps[CPUID_EBX + i*PT_CPUID_REGS_NUM] = best->ebx;
+		vmx->pt_desc.caps[CPUID_ECX + i*PT_CPUID_REGS_NUM] = best->ecx;
+		vmx->pt_desc.caps[CPUID_EDX + i*PT_CPUID_REGS_NUM] = best->edx;
+	}
+
+	/* Get the number of configurable Address Ranges for filtering */
+	vmx->pt_desc.addr_range = intel_pt_validate_cap(vmx->pt_desc.caps,
+						PT_CAP_num_address_ranges);
+
+	/* Initialize and clear the no dependency bits */
+	vmx->pt_desc.ctl_bitmask = ~(RTIT_CTL_TRACEEN | RTIT_CTL_OS |
+			RTIT_CTL_USR | RTIT_CTL_TSC_EN | RTIT_CTL_DISRETC);
+
+	/*
+	 * If CPUID.(EAX=14H,ECX=0):EBX[0]=1 CR3Filter can be set otherwise
+	 * will inject an #GP
+	 */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_cr3_filtering))
+		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_CR3EN;
+
+	/*
+	 * If CPUID.(EAX=14H,ECX=0):EBX[1]=1 CYCEn, CycThresh and
+	 * PSBFreq can be set
+	 */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc))
+		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_CYCLEACC |
+				RTIT_CTL_CYC_THRESH | RTIT_CTL_PSB_FREQ);
+
+	/*
+	 * If CPUID.(EAX=14H,ECX=0):EBX[3]=1 MTCEn BranchEn and
+	 * MTCFreq can be set
+	 */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc))
+		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_MTC_EN |
+				RTIT_CTL_BRANCH_EN | RTIT_CTL_MTC_RANGE);
+
+	/* If CPUID.(EAX=14H,ECX=0):EBX[4]=1 FUPonPTW and PTWEn can be set */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_ptwrite))
+		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_FUP_ON_PTW |
+							RTIT_CTL_PTW_EN);
+
+	/* If CPUID.(EAX=14H,ECX=0):EBX[5]=1 PwrEvEn can be set */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_power_event_trace))
+		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_PWR_EVT_EN;
+
+	/* If CPUID.(EAX=14H,ECX=0):ECX[0]=1 ToPA can be set */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_topa_output))
+		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_TOPA;
+
+	/* If CPUID.(EAX=14H,ECX=0):ECX[3]=1 FabircEn can be set */
+	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_output_subsys))
+		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_FABRIC_EN;
+
+	/* unmask address range configure area */
+	for (i = 0; i < vmx->pt_desc.addr_range; i++)
+		vmx->pt_desc.ctl_bitmask &= ~(0xf << (32 + i * 4));
+}
+
+static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	if (cpu_has_secondary_exec_ctrls()) {
+		vmx_compute_secondary_exec_control(vmx);
+		vmcs_set_secondary_exec_control(vmx->secondary_exec_control);
+	}
+
+	if (nested_vmx_allowed(vcpu))
+		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
+			FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
+	else
+		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
+			~FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
+
+	if (nested_vmx_allowed(vcpu)) {
+		nested_vmx_cr_fixed1_bits_update(vcpu);
+		nested_vmx_entry_exit_ctls_update(vcpu);
+	}
+
+	if (boot_cpu_has(X86_FEATURE_INTEL_PT) &&
+			guest_cpuid_has(vcpu, X86_FEATURE_INTEL_PT))
+		update_intel_pt_cfg(vcpu);
+}
+
+static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
+{
+	if (func == 1 && nested)
+		entry->ecx |= bit(X86_FEATURE_VMX);
+}
+
+static void vmx_request_immediate_exit(struct kvm_vcpu *vcpu)
+{
+	to_vmx(vcpu)->req_immediate_exit = true;
+}
+
+static int vmx_check_intercept(struct kvm_vcpu *vcpu,
+			       struct x86_instruction_info *info,
+			       enum x86_intercept_stage stage)
+{
+	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+	struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
+
+	/*
+	 * RDPID causes #UD if disabled through secondary execution controls.
+	 * Because it is marked as EmulateOnUD, we need to intercept it here.
+	 */
+	if (info->intercept == x86_intercept_rdtscp &&
+	    !nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
+		ctxt->exception.vector = UD_VECTOR;
+		ctxt->exception.error_code_valid = false;
+		return X86EMUL_PROPAGATE_FAULT;
+	}
+
+	/* TODO: check more intercepts... */
+	return X86EMUL_CONTINUE;
+}
+
+#ifdef CONFIG_X86_64
+/* (a << shift) / divisor, return 1 if overflow otherwise 0 */
+static inline int u64_shl_div_u64(u64 a, unsigned int shift,
+				  u64 divisor, u64 *result)
+{
+	u64 low = a << shift, high = a >> (64 - shift);
+
+	/* To avoid the overflow on divq */
+	if (high >= divisor)
+		return 1;
+
+	/* Low hold the result, high hold rem which is discarded */
+	asm("divq %2\n\t" : "=a" (low), "=d" (high) :
+	    "rm" (divisor), "0" (low), "1" (high));
+	*result = low;
+
+	return 0;
+}
+
+static int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc)
+{
+	struct vcpu_vmx *vmx;
+	u64 tscl, guest_tscl, delta_tsc, lapic_timer_advance_cycles;
+
+	if (kvm_mwait_in_guest(vcpu->kvm))
+		return -EOPNOTSUPP;
+
+	vmx = to_vmx(vcpu);
+	tscl = rdtsc();
+	guest_tscl = kvm_read_l1_tsc(vcpu, tscl);
+	delta_tsc = max(guest_deadline_tsc, guest_tscl) - guest_tscl;
+	lapic_timer_advance_cycles = nsec_to_cycles(vcpu, lapic_timer_advance_ns);
+
+	if (delta_tsc > lapic_timer_advance_cycles)
+		delta_tsc -= lapic_timer_advance_cycles;
+	else
+		delta_tsc = 0;
+
+	/* Convert to host delta tsc if tsc scaling is enabled */
+	if (vcpu->arch.tsc_scaling_ratio != kvm_default_tsc_scaling_ratio &&
+			u64_shl_div_u64(delta_tsc,
+				kvm_tsc_scaling_ratio_frac_bits,
+				vcpu->arch.tsc_scaling_ratio,
+				&delta_tsc))
+		return -ERANGE;
+
+	/*
+	 * If the delta tsc can't fit in the 32 bit after the multi shift,
+	 * we can't use the preemption timer.
+	 * It's possible that it fits on later vmentries, but checking
+	 * on every vmentry is costly so we just use an hrtimer.
+	 */
+	if (delta_tsc >> (cpu_preemption_timer_multi + 32))
+		return -ERANGE;
+
+	vmx->hv_deadline_tsc = tscl + delta_tsc;
+	return delta_tsc == 0;
+}
+
+static void vmx_cancel_hv_timer(struct kvm_vcpu *vcpu)
+{
+	to_vmx(vcpu)->hv_deadline_tsc = -1;
+}
+#endif
+
+static void vmx_sched_in(struct kvm_vcpu *vcpu, int cpu)
+{
+	if (!kvm_pause_in_guest(vcpu->kvm))
+		shrink_ple_window(vcpu);
+}
+
+static void vmx_slot_enable_log_dirty(struct kvm *kvm,
+				     struct kvm_memory_slot *slot)
+{
+	kvm_mmu_slot_leaf_clear_dirty(kvm, slot);
+	kvm_mmu_slot_largepage_remove_write_access(kvm, slot);
+}
+
+static void vmx_slot_disable_log_dirty(struct kvm *kvm,
+				       struct kvm_memory_slot *slot)
+{
+	kvm_mmu_slot_set_dirty(kvm, slot);
+}
+
+static void vmx_flush_log_dirty(struct kvm *kvm)
+{
+	kvm_flush_pml_buffers(kvm);
+}
+
+static int vmx_write_pml_buffer(struct kvm_vcpu *vcpu)
+{
+	struct vmcs12 *vmcs12;
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	gpa_t gpa;
+	struct page *page = NULL;
+	u64 *pml_address;
+
+	if (is_guest_mode(vcpu)) {
+		WARN_ON_ONCE(vmx->nested.pml_full);
+
+		/*
+		 * Check if PML is enabled for the nested guest.
+		 * Whether eptp bit 6 is set is already checked
+		 * as part of A/D emulation.
+		 */
+		vmcs12 = get_vmcs12(vcpu);
+		if (!nested_cpu_has_pml(vmcs12))
+			return 0;
+
+		if (vmcs12->guest_pml_index >= PML_ENTITY_NUM) {
+			vmx->nested.pml_full = true;
+			return 1;
+		}
+
+		gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS) & ~0xFFFull;
+
+		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->pml_address);
+		if (is_error_page(page))
+			return 0;
+
+		pml_address = kmap(page);
+		pml_address[vmcs12->guest_pml_index--] = gpa;
+		kunmap(page);
+		kvm_release_page_clean(page);
+	}
+
+	return 0;
+}
+
+static void vmx_enable_log_dirty_pt_masked(struct kvm *kvm,
+					   struct kvm_memory_slot *memslot,
+					   gfn_t offset, unsigned long mask)
+{
+	kvm_mmu_clear_dirty_pt_masked(kvm, memslot, offset, mask);
+}
+
+static void __pi_post_block(struct kvm_vcpu *vcpu)
+{
+	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
+	struct pi_desc old, new;
+	unsigned int dest;
+
+	do {
+		old.control = new.control = pi_desc->control;
+		WARN(old.nv != POSTED_INTR_WAKEUP_VECTOR,
+		     "Wakeup handler not enabled while the VCPU is blocked\n");
+
+		dest = cpu_physical_id(vcpu->cpu);
+
+		if (x2apic_enabled())
+			new.ndst = dest;
+		else
+			new.ndst = (dest << 8) & 0xFF00;
+
+		/* set 'NV' to 'notification vector' */
+		new.nv = POSTED_INTR_VECTOR;
+	} while (cmpxchg64(&pi_desc->control, old.control,
+			   new.control) != old.control);
+
+	if (!WARN_ON_ONCE(vcpu->pre_pcpu == -1)) {
+		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
+		list_del(&vcpu->blocked_vcpu_list);
+		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
+		vcpu->pre_pcpu = -1;
+	}
+}
+
+/*
+ * This routine does the following things for vCPU which is going
+ * to be blocked if VT-d PI is enabled.
+ * - Store the vCPU to the wakeup list, so when interrupts happen
+ *   we can find the right vCPU to wake up.
+ * - Change the Posted-interrupt descriptor as below:
+ *      'NDST' <-- vcpu->pre_pcpu
+ *      'NV' <-- POSTED_INTR_WAKEUP_VECTOR
+ * - If 'ON' is set during this process, which means at least one
+ *   interrupt is posted for this vCPU, we cannot block it, in
+ *   this case, return 1, otherwise, return 0.
+ *
+ */
+static int pi_pre_block(struct kvm_vcpu *vcpu)
+{
+	unsigned int dest;
+	struct pi_desc old, new;
+	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
+
+	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
+		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
+		!kvm_vcpu_apicv_active(vcpu))
+		return 0;
+
+	WARN_ON(irqs_disabled());
+	local_irq_disable();
+	if (!WARN_ON_ONCE(vcpu->pre_pcpu != -1)) {
+		vcpu->pre_pcpu = vcpu->cpu;
+		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
+		list_add_tail(&vcpu->blocked_vcpu_list,
+			      &per_cpu(blocked_vcpu_on_cpu,
+				       vcpu->pre_pcpu));
+		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
+	}
+
+	do {
+		old.control = new.control = pi_desc->control;
+
+		WARN((pi_desc->sn == 1),
+		     "Warning: SN field of posted-interrupts "
+		     "is set before blocking\n");
+
+		/*
+		 * Since vCPU can be preempted during this process,
+		 * vcpu->cpu could be different with pre_pcpu, we
+		 * need to set pre_pcpu as the destination of wakeup
+		 * notification event, then we can find the right vCPU
+		 * to wakeup in wakeup handler if interrupts happen
+		 * when the vCPU is in blocked state.
+		 */
+		dest = cpu_physical_id(vcpu->pre_pcpu);
+
+		if (x2apic_enabled())
+			new.ndst = dest;
+		else
+			new.ndst = (dest << 8) & 0xFF00;
+
+		/* set 'NV' to 'wakeup vector' */
+		new.nv = POSTED_INTR_WAKEUP_VECTOR;
+	} while (cmpxchg64(&pi_desc->control, old.control,
+			   new.control) != old.control);
+
+	/* We should not block the vCPU if an interrupt is posted for it.  */
+	if (pi_test_on(pi_desc) == 1)
+		__pi_post_block(vcpu);
+
+	local_irq_enable();
+	return (vcpu->pre_pcpu == -1);
+}
+
+static int vmx_pre_block(struct kvm_vcpu *vcpu)
+{
+	if (pi_pre_block(vcpu))
+		return 1;
+
+	if (kvm_lapic_hv_timer_in_use(vcpu))
+		kvm_lapic_switch_to_sw_timer(vcpu);
+
+	return 0;
+}
+
+static void pi_post_block(struct kvm_vcpu *vcpu)
+{
+	if (vcpu->pre_pcpu == -1)
+		return;
+
+	WARN_ON(irqs_disabled());
+	local_irq_disable();
+	__pi_post_block(vcpu);
+	local_irq_enable();
+}
+
+static void vmx_post_block(struct kvm_vcpu *vcpu)
+{
+	if (kvm_x86_ops->set_hv_timer)
+		kvm_lapic_switch_to_hv_timer(vcpu);
+
+	pi_post_block(vcpu);
+}
+
+/*
+ * vmx_update_pi_irte - set IRTE for Posted-Interrupts
+ *
+ * @kvm: kvm
+ * @host_irq: host irq of the interrupt
+ * @guest_irq: gsi of the interrupt
+ * @set: set or unset PI
+ * returns 0 on success, < 0 on failure
+ */
+static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
+			      uint32_t guest_irq, bool set)
+{
+	struct kvm_kernel_irq_routing_entry *e;
+	struct kvm_irq_routing_table *irq_rt;
+	struct kvm_lapic_irq irq;
+	struct kvm_vcpu *vcpu;
+	struct vcpu_data vcpu_info;
+	int idx, ret = 0;
+
+	if (!kvm_arch_has_assigned_device(kvm) ||
+		!irq_remapping_cap(IRQ_POSTING_CAP) ||
+		!kvm_vcpu_apicv_active(kvm->vcpus[0]))
+		return 0;
+
+	idx = srcu_read_lock(&kvm->irq_srcu);
+	irq_rt = srcu_dereference(kvm->irq_routing, &kvm->irq_srcu);
+	if (guest_irq >= irq_rt->nr_rt_entries ||
+	    hlist_empty(&irq_rt->map[guest_irq])) {
+		pr_warn_once("no route for guest_irq %u/%u (broken user space?)\n",
+			     guest_irq, irq_rt->nr_rt_entries);
+		goto out;
+	}
+
+	hlist_for_each_entry(e, &irq_rt->map[guest_irq], link) {
+		if (e->type != KVM_IRQ_ROUTING_MSI)
+			continue;
+		/*
+		 * VT-d PI cannot support posting multicast/broadcast
+		 * interrupts to a vCPU, we still use interrupt remapping
+		 * for these kind of interrupts.
+		 *
+		 * For lowest-priority interrupts, we only support
+		 * those with single CPU as the destination, e.g. user
+		 * configures the interrupts via /proc/irq or uses
+		 * irqbalance to make the interrupts single-CPU.
+		 *
+		 * We will support full lowest-priority interrupt later.
+		 */
+
+		kvm_set_msi_irq(kvm, e, &irq);
+		if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu)) {
+			/*
+			 * Make sure the IRTE is in remapped mode if
+			 * we don't handle it in posted mode.
+			 */
+			ret = irq_set_vcpu_affinity(host_irq, NULL);
+			if (ret < 0) {
+				printk(KERN_INFO
+				   "failed to back to remapped mode, irq: %u\n",
+				   host_irq);
+				goto out;
+			}
+
+			continue;
+		}
+
+		vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu));
+		vcpu_info.vector = irq.vector;
+
+		trace_kvm_pi_irte_update(host_irq, vcpu->vcpu_id, e->gsi,
+				vcpu_info.vector, vcpu_info.pi_desc_addr, set);
+
+		if (set)
+			ret = irq_set_vcpu_affinity(host_irq, &vcpu_info);
+		else
+			ret = irq_set_vcpu_affinity(host_irq, NULL);
+
+		if (ret < 0) {
+			printk(KERN_INFO "%s: failed to update PI IRTE\n",
+					__func__);
+			goto out;
+		}
+	}
+
+	ret = 0;
+out:
+	srcu_read_unlock(&kvm->irq_srcu, idx);
+	return ret;
+}
+
+static void vmx_setup_mce(struct kvm_vcpu *vcpu)
+{
+	if (vcpu->arch.mcg_cap & MCG_LMCE_P)
+		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
+			FEATURE_CONTROL_LMCE;
+	else
+		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
+			~FEATURE_CONTROL_LMCE;
+}
+
+static int vmx_smi_allowed(struct kvm_vcpu *vcpu)
+{
+	/* we need a nested vmexit to enter SMM, postpone if run is pending */
+	if (to_vmx(vcpu)->nested.nested_run_pending)
+		return 0;
+	return 1;
+}
+
+static int vmx_pre_enter_smm(struct kvm_vcpu *vcpu, char *smstate)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+
+	vmx->nested.smm.guest_mode = is_guest_mode(vcpu);
+	if (vmx->nested.smm.guest_mode)
+		nested_vmx_vmexit(vcpu, -1, 0, 0);
+
+	vmx->nested.smm.vmxon = vmx->nested.vmxon;
+	vmx->nested.vmxon = false;
+	vmx_clear_hlt(vcpu);
+	return 0;
+}
+
+static int vmx_pre_leave_smm(struct kvm_vcpu *vcpu, u64 smbase)
+{
+	struct vcpu_vmx *vmx = to_vmx(vcpu);
+	int ret;
+
+	if (vmx->nested.smm.vmxon) {
+		vmx->nested.vmxon = true;
+		vmx->nested.smm.vmxon = false;
+	}
+
+	if (vmx->nested.smm.guest_mode) {
+		vcpu->arch.hflags &= ~HF_SMM_MASK;
+		ret = nested_vmx_enter_non_root_mode(vcpu, false);
+		vcpu->arch.hflags |= HF_SMM_MASK;
+		if (ret)
+			return ret;
+
+		vmx->nested.smm.guest_mode = false;
+	}
+	return 0;
+}
+
+static int enable_smi_window(struct kvm_vcpu *vcpu)
+{
+	return 0;
+}
+
+static __init int hardware_setup(void)
+{
+	unsigned long host_bndcfgs;
+	int r, i;
+
+	rdmsrl_safe(MSR_EFER, &host_efer);
+
+	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
+		kvm_define_shared_msr(i, vmx_msr_index[i]);
+
+	if (setup_vmcs_config(&vmcs_config, &vmx_capability) < 0)
+		return -EIO;
+
+	if (boot_cpu_has(X86_FEATURE_NX))
+		kvm_enable_efer_bits(EFER_NX);
+
+	if (boot_cpu_has(X86_FEATURE_MPX)) {
+		rdmsrl(MSR_IA32_BNDCFGS, host_bndcfgs);
+		WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost");
+	}
+
+	if (boot_cpu_has(X86_FEATURE_XSAVES))
+		rdmsrl(MSR_IA32_XSS, host_xss);
+
+	if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() ||
+	    !(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global()))
+		enable_vpid = 0;
+
+	if (!cpu_has_vmx_ept() ||
+	    !cpu_has_vmx_ept_4levels() ||
+	    !cpu_has_vmx_ept_mt_wb() ||
+	    !cpu_has_vmx_invept_global())
+		enable_ept = 0;
+
+	if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
+		enable_ept_ad_bits = 0;
+
+	if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
+		enable_unrestricted_guest = 0;
+
+	if (!cpu_has_vmx_flexpriority())
+		flexpriority_enabled = 0;
+
+	if (!cpu_has_virtual_nmis())
+		enable_vnmi = 0;
+
+	/*
+	 * set_apic_access_page_addr() is used to reload apic access
+	 * page upon invalidation.  No need to do anything if not
+	 * using the APIC_ACCESS_ADDR VMCS field.
+	 */
+	if (!flexpriority_enabled)
+		kvm_x86_ops->set_apic_access_page_addr = NULL;
+
+	if (!cpu_has_vmx_tpr_shadow())
+		kvm_x86_ops->update_cr8_intercept = NULL;
+
+	if (enable_ept && !cpu_has_vmx_ept_2m_page())
+		kvm_disable_largepages();
+
+#if IS_ENABLED(CONFIG_HYPERV)
+	if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
+	    && enable_ept) {
+		kvm_x86_ops->tlb_remote_flush = hv_remote_flush_tlb;
+		kvm_x86_ops->tlb_remote_flush_with_range =
+				hv_remote_flush_tlb_with_range;
+	}
+#endif
+
+	if (!cpu_has_vmx_ple()) {
+		ple_gap = 0;
+		ple_window = 0;
+		ple_window_grow = 0;
+		ple_window_max = 0;
+		ple_window_shrink = 0;
+	}
+
+	if (!cpu_has_vmx_apicv()) {
+		enable_apicv = 0;
+		kvm_x86_ops->sync_pir_to_irr = NULL;
+	}
+
+	if (cpu_has_vmx_tsc_scaling()) {
+		kvm_has_tsc_control = true;
+		kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX;
+		kvm_tsc_scaling_ratio_frac_bits = 48;
+	}
+
+	set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
+
+	if (enable_ept)
+		vmx_enable_tdp();
+	else
+		kvm_disable_tdp();
+
+	/*
+	 * Only enable PML when hardware supports PML feature, and both EPT
+	 * and EPT A/D bit features are enabled -- PML depends on them to work.
+	 */
+	if (!enable_ept || !enable_ept_ad_bits || !cpu_has_vmx_pml())
+		enable_pml = 0;
+
+	if (!enable_pml) {
+		kvm_x86_ops->slot_enable_log_dirty = NULL;
+		kvm_x86_ops->slot_disable_log_dirty = NULL;
+		kvm_x86_ops->flush_log_dirty = NULL;
+		kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
+	}
+
+	if (!cpu_has_vmx_preemption_timer())
+		kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
+
+	if (cpu_has_vmx_preemption_timer() && enable_preemption_timer) {
+		u64 vmx_msr;
+
+		rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
+		cpu_preemption_timer_multi =
+			vmx_msr & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
+	} else {
+		kvm_x86_ops->set_hv_timer = NULL;
+		kvm_x86_ops->cancel_hv_timer = NULL;
+	}
+
+	kvm_set_posted_intr_wakeup_handler(wakeup_handler);
+
+	kvm_mce_cap_supported |= MCG_LMCE_P;
+
+	if (pt_mode != PT_MODE_SYSTEM && pt_mode != PT_MODE_HOST_GUEST)
+		return -EINVAL;
+	if (!enable_ept || !cpu_has_vmx_intel_pt())
+		pt_mode = PT_MODE_SYSTEM;
+
+	if (nested) {
+		nested_vmx_setup_ctls_msrs(&vmcs_config.nested,
+					   vmx_capability.ept, enable_apicv);
+
+		r = nested_vmx_hardware_setup(kvm_vmx_exit_handlers);
+		if (r)
+			return r;
+	}
+
+	r = alloc_kvm_area();
+	if (r)
+		nested_vmx_hardware_unsetup();
+	return r;
+}
+
+static __exit void hardware_unsetup(void)
+{
+	if (nested)
+		nested_vmx_hardware_unsetup();
+
+	free_kvm_area();
+}
+
+static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
+	.cpu_has_kvm_support = cpu_has_kvm_support,
+	.disabled_by_bios = vmx_disabled_by_bios,
+	.hardware_setup = hardware_setup,
+	.hardware_unsetup = hardware_unsetup,
+	.check_processor_compatibility = vmx_check_processor_compat,
+	.hardware_enable = hardware_enable,
+	.hardware_disable = hardware_disable,
+	.cpu_has_accelerated_tpr = report_flexpriority,
+	.has_emulated_msr = vmx_has_emulated_msr,
+
+	.vm_init = vmx_vm_init,
+	.vm_alloc = vmx_vm_alloc,
+	.vm_free = vmx_vm_free,
+
+	.vcpu_create = vmx_create_vcpu,
+	.vcpu_free = vmx_free_vcpu,
+	.vcpu_reset = vmx_vcpu_reset,
+
+	.prepare_guest_switch = vmx_prepare_switch_to_guest,
+	.vcpu_load = vmx_vcpu_load,
+	.vcpu_put = vmx_vcpu_put,
+
+	.update_bp_intercept = update_exception_bitmap,
+	.get_msr_feature = vmx_get_msr_feature,
+	.get_msr = vmx_get_msr,
+	.set_msr = vmx_set_msr,
+	.get_segment_base = vmx_get_segment_base,
+	.get_segment = vmx_get_segment,
+	.set_segment = vmx_set_segment,
+	.get_cpl = vmx_get_cpl,
+	.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
+	.decache_cr0_guest_bits = vmx_decache_cr0_guest_bits,
+	.decache_cr3 = vmx_decache_cr3,
+	.decache_cr4_guest_bits = vmx_decache_cr4_guest_bits,
+	.set_cr0 = vmx_set_cr0,
+	.set_cr3 = vmx_set_cr3,
+	.set_cr4 = vmx_set_cr4,
+	.set_efer = vmx_set_efer,
+	.get_idt = vmx_get_idt,
+	.set_idt = vmx_set_idt,
+	.get_gdt = vmx_get_gdt,
+	.set_gdt = vmx_set_gdt,
+	.get_dr6 = vmx_get_dr6,
+	.set_dr6 = vmx_set_dr6,
+	.set_dr7 = vmx_set_dr7,
+	.sync_dirty_debug_regs = vmx_sync_dirty_debug_regs,
+	.cache_reg = vmx_cache_reg,
+	.get_rflags = vmx_get_rflags,
+	.set_rflags = vmx_set_rflags,
+
+	.tlb_flush = vmx_flush_tlb,
+	.tlb_flush_gva = vmx_flush_tlb_gva,
+
+	.run = vmx_vcpu_run,
+	.handle_exit = vmx_handle_exit,
+	.skip_emulated_instruction = skip_emulated_instruction,
+	.set_interrupt_shadow = vmx_set_interrupt_shadow,
+	.get_interrupt_shadow = vmx_get_interrupt_shadow,
+	.patch_hypercall = vmx_patch_hypercall,
+	.set_irq = vmx_inject_irq,
+	.set_nmi = vmx_inject_nmi,
+	.queue_exception = vmx_queue_exception,
+	.cancel_injection = vmx_cancel_injection,
+	.interrupt_allowed = vmx_interrupt_allowed,
+	.nmi_allowed = vmx_nmi_allowed,
+	.get_nmi_mask = vmx_get_nmi_mask,
+	.set_nmi_mask = vmx_set_nmi_mask,
+	.enable_nmi_window = enable_nmi_window,
+	.enable_irq_window = enable_irq_window,
+	.update_cr8_intercept = update_cr8_intercept,
+	.set_virtual_apic_mode = vmx_set_virtual_apic_mode,
+	.set_apic_access_page_addr = vmx_set_apic_access_page_addr,
+	.get_enable_apicv = vmx_get_enable_apicv,
+	.refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
+	.load_eoi_exitmap = vmx_load_eoi_exitmap,
+	.apicv_post_state_restore = vmx_apicv_post_state_restore,
+	.hwapic_irr_update = vmx_hwapic_irr_update,
+	.hwapic_isr_update = vmx_hwapic_isr_update,
+	.guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
+	.sync_pir_to_irr = vmx_sync_pir_to_irr,
+	.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
+
+	.set_tss_addr = vmx_set_tss_addr,
+	.set_identity_map_addr = vmx_set_identity_map_addr,
+	.get_tdp_level = get_ept_level,
+	.get_mt_mask = vmx_get_mt_mask,
+
+	.get_exit_info = vmx_get_exit_info,
+
+	.get_lpage_level = vmx_get_lpage_level,
+
+	.cpuid_update = vmx_cpuid_update,
+
+	.rdtscp_supported = vmx_rdtscp_supported,
+	.invpcid_supported = vmx_invpcid_supported,
+
+	.set_supported_cpuid = vmx_set_supported_cpuid,
+
+	.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
+
+	.read_l1_tsc_offset = vmx_read_l1_tsc_offset,
+	.write_l1_tsc_offset = vmx_write_l1_tsc_offset,
+
+	.set_tdp_cr3 = vmx_set_cr3,
+
+	.check_intercept = vmx_check_intercept,
+	.handle_external_intr = vmx_handle_external_intr,
+	.mpx_supported = vmx_mpx_supported,
+	.xsaves_supported = vmx_xsaves_supported,
+	.umip_emulated = vmx_umip_emulated,
+	.pt_supported = vmx_pt_supported,
+
+	.request_immediate_exit = vmx_request_immediate_exit,
+
+	.sched_in = vmx_sched_in,
+
+	.slot_enable_log_dirty = vmx_slot_enable_log_dirty,
+	.slot_disable_log_dirty = vmx_slot_disable_log_dirty,
+	.flush_log_dirty = vmx_flush_log_dirty,
+	.enable_log_dirty_pt_masked = vmx_enable_log_dirty_pt_masked,
+	.write_log_dirty = vmx_write_pml_buffer,
+
+	.pre_block = vmx_pre_block,
+	.post_block = vmx_post_block,
+
+	.pmu_ops = &intel_pmu_ops,
+
+	.update_pi_irte = vmx_update_pi_irte,
+
+#ifdef CONFIG_X86_64
+	.set_hv_timer = vmx_set_hv_timer,
+	.cancel_hv_timer = vmx_cancel_hv_timer,
+#endif
+
+	.setup_mce = vmx_setup_mce,
+
+	.smi_allowed = vmx_smi_allowed,
+	.pre_enter_smm = vmx_pre_enter_smm,
+	.pre_leave_smm = vmx_pre_leave_smm,
+	.enable_smi_window = enable_smi_window,
+
+	.check_nested_events = NULL,
+	.get_nested_state = NULL,
+	.set_nested_state = NULL,
+	.get_vmcs12_pages = NULL,
+	.nested_enable_evmcs = NULL,
+};
+
+static void vmx_cleanup_l1d_flush(void)
+{
+	if (vmx_l1d_flush_pages) {
+		free_pages((unsigned long)vmx_l1d_flush_pages, L1D_CACHE_ORDER);
+		vmx_l1d_flush_pages = NULL;
+	}
+	/* Restore state so sysfs ignores VMX */
+	l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
+}
+
+static void vmx_exit(void)
+{
+#ifdef CONFIG_KEXEC_CORE
+	RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
+	synchronize_rcu();
+#endif
+
+	kvm_exit();
+
+#if IS_ENABLED(CONFIG_HYPERV)
+	if (static_branch_unlikely(&enable_evmcs)) {
+		int cpu;
+		struct hv_vp_assist_page *vp_ap;
+		/*
+		 * Reset everything to support using non-enlightened VMCS
+		 * access later (e.g. when we reload the module with
+		 * enlightened_vmcs=0)
+		 */
+		for_each_online_cpu(cpu) {
+			vp_ap =	hv_get_vp_assist_page(cpu);
+
+			if (!vp_ap)
+				continue;
+
+			vp_ap->current_nested_vmcs = 0;
+			vp_ap->enlighten_vmentry = 0;
+		}
+
+		static_branch_disable(&enable_evmcs);
+	}
+#endif
+	vmx_cleanup_l1d_flush();
+}
+module_exit(vmx_exit);
+
+static int __init vmx_init(void)
+{
+	int r;
+
+#if IS_ENABLED(CONFIG_HYPERV)
+	/*
+	 * Enlightened VMCS usage should be recommended and the host needs
+	 * to support eVMCS v1 or above. We can also disable eVMCS support
+	 * with module parameter.
+	 */
+	if (enlightened_vmcs &&
+	    ms_hyperv.hints & HV_X64_ENLIGHTENED_VMCS_RECOMMENDED &&
+	    (ms_hyperv.nested_features & HV_X64_ENLIGHTENED_VMCS_VERSION) >=
+	    KVM_EVMCS_VERSION) {
+		int cpu;
+
+		/* Check that we have assist pages on all online CPUs */
+		for_each_online_cpu(cpu) {
+			if (!hv_get_vp_assist_page(cpu)) {
+				enlightened_vmcs = false;
+				break;
+			}
+		}
+
+		if (enlightened_vmcs) {
+			pr_info("KVM: vmx: using Hyper-V Enlightened VMCS\n");
+			static_branch_enable(&enable_evmcs);
+		}
+	} else {
+		enlightened_vmcs = false;
+	}
+#endif
+
+	r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
+		     __alignof__(struct vcpu_vmx), THIS_MODULE);
+	if (r)
+		return r;
+
+	/*
+	 * Must be called after kvm_init() so enable_ept is properly set
+	 * up. Hand the parameter mitigation value in which was stored in
+	 * the pre module init parser. If no parameter was given, it will
+	 * contain 'auto' which will be turned into the default 'cond'
+	 * mitigation mode.
+	 */
+	if (boot_cpu_has(X86_BUG_L1TF)) {
+		r = vmx_setup_l1d_flush(vmentry_l1d_flush_param);
+		if (r) {
+			vmx_exit();
+			return r;
+		}
+	}
+
+#ifdef CONFIG_KEXEC_CORE
+	rcu_assign_pointer(crash_vmclear_loaded_vmcss,
+			   crash_vmclear_local_loaded_vmcss);
+#endif
+	vmx_check_vmcs12_offsets();
+
+	return 0;
+}
+module_init(vmx_init);
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
new file mode 100644
index 000000000000..99328954c2fc
--- /dev/null
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -0,0 +1,519 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __KVM_X86_VMX_H
+#define __KVM_X86_VMX_H
+
+#include <linux/kvm_host.h>
+
+#include <asm/kvm.h>
+#include <asm/intel_pt.h>
+
+#include "capabilities.h"
+#include "ops.h"
+#include "vmcs.h"
+
+extern const u32 vmx_msr_index[];
+extern u64 host_efer;
+
+#define MSR_TYPE_R	1
+#define MSR_TYPE_W	2
+#define MSR_TYPE_RW	3
+
+#define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4))
+
+#define NR_AUTOLOAD_MSRS 8
+
+struct vmx_msrs {
+	unsigned int		nr;
+	struct vmx_msr_entry	val[NR_AUTOLOAD_MSRS];
+};
+
+struct shared_msr_entry {
+	unsigned index;
+	u64 data;
+	u64 mask;
+};
+
+enum segment_cache_field {
+	SEG_FIELD_SEL = 0,
+	SEG_FIELD_BASE = 1,
+	SEG_FIELD_LIMIT = 2,
+	SEG_FIELD_AR = 3,
+
+	SEG_FIELD_NR = 4
+};
+
+/* Posted-Interrupt Descriptor */
+struct pi_desc {
+	u32 pir[8];     /* Posted interrupt requested */
+	union {
+		struct {
+				/* bit 256 - Outstanding Notification */
+			u16	on	: 1,
+				/* bit 257 - Suppress Notification */
+				sn	: 1,
+				/* bit 271:258 - Reserved */
+				rsvd_1	: 14;
+				/* bit 279:272 - Notification Vector */
+			u8	nv;
+				/* bit 287:280 - Reserved */
+			u8	rsvd_2;
+				/* bit 319:288 - Notification Destination */
+			u32	ndst;
+		};
+		u64 control;
+	};
+	u32 rsvd[6];
+} __aligned(64);
+
+#define RTIT_ADDR_RANGE		4
+
+struct pt_ctx {
+	u64 ctl;
+	u64 status;
+	u64 output_base;
+	u64 output_mask;
+	u64 cr3_match;
+	u64 addr_a[RTIT_ADDR_RANGE];
+	u64 addr_b[RTIT_ADDR_RANGE];
+};
+
+struct pt_desc {
+	u64 ctl_bitmask;
+	u32 addr_range;
+	u32 caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES];
+	struct pt_ctx host;
+	struct pt_ctx guest;
+};
+
+/*
+ * The nested_vmx structure is part of vcpu_vmx, and holds information we need
+ * for correct emulation of VMX (i.e., nested VMX) on this vcpu.
+ */
+struct nested_vmx {
+	/* Has the level1 guest done vmxon? */
+	bool vmxon;
+	gpa_t vmxon_ptr;
+	bool pml_full;
+
+	/* The guest-physical address of the current VMCS L1 keeps for L2 */
+	gpa_t current_vmptr;
+	/*
+	 * Cache of the guest's VMCS, existing outside of guest memory.
+	 * Loaded from guest memory during VMPTRLD. Flushed to guest
+	 * memory during VMCLEAR and VMPTRLD.
+	 */
+	struct vmcs12 *cached_vmcs12;
+	/*
+	 * Cache of the guest's shadow VMCS, existing outside of guest
+	 * memory. Loaded from guest memory during VM entry. Flushed
+	 * to guest memory during VM exit.
+	 */
+	struct vmcs12 *cached_shadow_vmcs12;
+	/*
+	 * Indicates if the shadow vmcs or enlightened vmcs must be updated
+	 * with the data held by struct vmcs12.
+	 */
+	bool need_vmcs12_sync;
+	bool dirty_vmcs12;
+
+	/*
+	 * vmcs02 has been initialized, i.e. state that is constant for
+	 * vmcs02 has been written to the backing VMCS.  Initialization
+	 * is delayed until L1 actually attempts to run a nested VM.
+	 */
+	bool vmcs02_initialized;
+
+	bool change_vmcs01_virtual_apic_mode;
+
+	/*
+	 * Enlightened VMCS has been enabled. It does not mean that L1 has to
+	 * use it. However, VMX features available to L1 will be limited based
+	 * on what the enlightened VMCS supports.
+	 */
+	bool enlightened_vmcs_enabled;
+
+	/* L2 must run next, and mustn't decide to exit to L1. */
+	bool nested_run_pending;
+
+	struct loaded_vmcs vmcs02;
+
+	/*
+	 * Guest pages referred to in the vmcs02 with host-physical
+	 * pointers, so we must keep them pinned while L2 runs.
+	 */
+	struct page *apic_access_page;
+	struct page *virtual_apic_page;
+	struct page *pi_desc_page;
+	struct pi_desc *pi_desc;
+	bool pi_pending;
+	u16 posted_intr_nv;
+
+	struct hrtimer preemption_timer;
+	bool preemption_timer_expired;
+
+	/* to migrate it to L2 if VM_ENTRY_LOAD_DEBUG_CONTROLS is off */
+	u64 vmcs01_debugctl;
+	u64 vmcs01_guest_bndcfgs;
+
+	u16 vpid02;
+	u16 last_vpid;
+
+	struct nested_vmx_msrs msrs;
+
+	/* SMM related state */
+	struct {
+		/* in VMX operation on SMM entry? */
+		bool vmxon;
+		/* in guest mode on SMM entry? */
+		bool guest_mode;
+	} smm;
+
+	gpa_t hv_evmcs_vmptr;
+	struct page *hv_evmcs_page;
+	struct hv_enlightened_vmcs *hv_evmcs;
+};
+
+struct vcpu_vmx {
+	struct kvm_vcpu       vcpu;
+	unsigned long         host_rsp;
+	u8                    fail;
+	u8		      msr_bitmap_mode;
+	u32                   exit_intr_info;
+	u32                   idt_vectoring_info;
+	ulong                 rflags;
+	struct shared_msr_entry *guest_msrs;
+	int                   nmsrs;
+	int                   save_nmsrs;
+	bool                  guest_msrs_dirty;
+	unsigned long	      host_idt_base;
+#ifdef CONFIG_X86_64
+	u64		      msr_host_kernel_gs_base;
+	u64		      msr_guest_kernel_gs_base;
+#endif
+
+	u64		      arch_capabilities;
+	u64		      spec_ctrl;
+
+	u32 vm_entry_controls_shadow;
+	u32 vm_exit_controls_shadow;
+	u32 secondary_exec_control;
+
+	/*
+	 * loaded_vmcs points to the VMCS currently used in this vcpu. For a
+	 * non-nested (L1) guest, it always points to vmcs01. For a nested
+	 * guest (L2), it points to a different VMCS.  loaded_cpu_state points
+	 * to the VMCS whose state is loaded into the CPU registers that only
+	 * need to be switched when transitioning to/from the kernel; a NULL
+	 * value indicates that host state is loaded.
+	 */
+	struct loaded_vmcs    vmcs01;
+	struct loaded_vmcs   *loaded_vmcs;
+	struct loaded_vmcs   *loaded_cpu_state;
+	bool                  __launched; /* temporary, used in vmx_vcpu_run */
+	struct msr_autoload {
+		struct vmx_msrs guest;
+		struct vmx_msrs host;
+	} msr_autoload;
+
+	struct {
+		int vm86_active;
+		ulong save_rflags;
+		struct kvm_segment segs[8];
+	} rmode;
+	struct {
+		u32 bitmask; /* 4 bits per segment (1 bit per field) */
+		struct kvm_save_segment {
+			u16 selector;
+			unsigned long base;
+			u32 limit;
+			u32 ar;
+		} seg[8];
+	} segment_cache;
+	int vpid;
+	bool emulation_required;
+
+	u32 exit_reason;
+
+	/* Posted interrupt descriptor */
+	struct pi_desc pi_desc;
+
+	/* Support for a guest hypervisor (nested VMX) */
+	struct nested_vmx nested;
+
+	/* Dynamic PLE window. */
+	int ple_window;
+	bool ple_window_dirty;
+
+	bool req_immediate_exit;
+
+	/* Support for PML */
+#define PML_ENTITY_NUM		512
+	struct page *pml_pg;
+
+	/* apic deadline value in host tsc */
+	u64 hv_deadline_tsc;
+
+	u64 current_tsc_ratio;
+
+	u32 host_pkru;
+
+	unsigned long host_debugctlmsr;
+
+	/*
+	 * Only bits masked by msr_ia32_feature_control_valid_bits can be set in
+	 * msr_ia32_feature_control. FEATURE_CONTROL_LOCKED is always included
+	 * in msr_ia32_feature_control_valid_bits.
+	 */
+	u64 msr_ia32_feature_control;
+	u64 msr_ia32_feature_control_valid_bits;
+	u64 ept_pointer;
+
+	struct pt_desc pt_desc;
+};
+
+enum ept_pointers_status {
+	EPT_POINTERS_CHECK = 0,
+	EPT_POINTERS_MATCH = 1,
+	EPT_POINTERS_MISMATCH = 2
+};
+
+struct kvm_vmx {
+	struct kvm kvm;
+
+	unsigned int tss_addr;
+	bool ept_identity_pagetable_done;
+	gpa_t ept_identity_map_addr;
+
+	enum ept_pointers_status ept_pointers_match;
+	spinlock_t ept_pointer_lock;
+};
+
+bool nested_vmx_allowed(struct kvm_vcpu *vcpu);
+void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
+void vmx_vcpu_put(struct kvm_vcpu *vcpu);
+int allocate_vpid(void);
+void free_vpid(int vpid);
+void vmx_set_constant_host_state(struct vcpu_vmx *vmx);
+void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu);
+int vmx_get_cpl(struct kvm_vcpu *vcpu);
+unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu);
+void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
+u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu);
+void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask);
+void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer);
+void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
+void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
+int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
+void set_cr4_guest_host_mask(struct vcpu_vmx *vmx);
+void ept_save_pdptrs(struct kvm_vcpu *vcpu);
+void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
+void vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
+u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa);
+void update_exception_bitmap(struct kvm_vcpu *vcpu);
+void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu);
+bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu);
+void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
+void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
+struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr);
+void pt_update_intercept_for_msr(struct vcpu_vmx *vmx);
+
+#define POSTED_INTR_ON  0
+#define POSTED_INTR_SN  1
+
+static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
+{
+	return test_and_set_bit(POSTED_INTR_ON,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
+{
+	return test_and_clear_bit(POSTED_INTR_ON,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
+{
+	return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
+}
+
+static inline void pi_clear_sn(struct pi_desc *pi_desc)
+{
+	return clear_bit(POSTED_INTR_SN,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline void pi_set_sn(struct pi_desc *pi_desc)
+{
+	return set_bit(POSTED_INTR_SN,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline void pi_clear_on(struct pi_desc *pi_desc)
+{
+	clear_bit(POSTED_INTR_ON,
+		(unsigned long *)&pi_desc->control);
+}
+
+static inline int pi_test_on(struct pi_desc *pi_desc)
+{
+	return test_bit(POSTED_INTR_ON,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline int pi_test_sn(struct pi_desc *pi_desc)
+{
+	return test_bit(POSTED_INTR_SN,
+			(unsigned long *)&pi_desc->control);
+}
+
+static inline u8 vmx_get_rvi(void)
+{
+	return vmcs_read16(GUEST_INTR_STATUS) & 0xff;
+}
+
+static inline void vm_entry_controls_reset_shadow(struct vcpu_vmx *vmx)
+{
+	vmx->vm_entry_controls_shadow = vmcs_read32(VM_ENTRY_CONTROLS);
+}
+
+static inline void vm_entry_controls_init(struct vcpu_vmx *vmx, u32 val)
+{
+	vmcs_write32(VM_ENTRY_CONTROLS, val);
+	vmx->vm_entry_controls_shadow = val;
+}
+
+static inline void vm_entry_controls_set(struct vcpu_vmx *vmx, u32 val)
+{
+	if (vmx->vm_entry_controls_shadow != val)
+		vm_entry_controls_init(vmx, val);
+}
+
+static inline u32 vm_entry_controls_get(struct vcpu_vmx *vmx)
+{
+	return vmx->vm_entry_controls_shadow;
+}
+
+static inline void vm_entry_controls_setbit(struct vcpu_vmx *vmx, u32 val)
+{
+	vm_entry_controls_set(vmx, vm_entry_controls_get(vmx) | val);
+}
+
+static inline void vm_entry_controls_clearbit(struct vcpu_vmx *vmx, u32 val)
+{
+	vm_entry_controls_set(vmx, vm_entry_controls_get(vmx) & ~val);
+}
+
+static inline void vm_exit_controls_reset_shadow(struct vcpu_vmx *vmx)
+{
+	vmx->vm_exit_controls_shadow = vmcs_read32(VM_EXIT_CONTROLS);
+}
+
+static inline void vm_exit_controls_init(struct vcpu_vmx *vmx, u32 val)
+{
+	vmcs_write32(VM_EXIT_CONTROLS, val);
+	vmx->vm_exit_controls_shadow = val;
+}
+
+static inline void vm_exit_controls_set(struct vcpu_vmx *vmx, u32 val)
+{
+	if (vmx->vm_exit_controls_shadow != val)
+		vm_exit_controls_init(vmx, val);
+}
+
+static inline u32 vm_exit_controls_get(struct vcpu_vmx *vmx)
+{
+	return vmx->vm_exit_controls_shadow;
+}
+
+static inline void vm_exit_controls_setbit(struct vcpu_vmx *vmx, u32 val)
+{
+	vm_exit_controls_set(vmx, vm_exit_controls_get(vmx) | val);
+}
+
+static inline void vm_exit_controls_clearbit(struct vcpu_vmx *vmx, u32 val)
+{
+	vm_exit_controls_set(vmx, vm_exit_controls_get(vmx) & ~val);
+}
+
+static inline void vmx_segment_cache_clear(struct vcpu_vmx *vmx)
+{
+	vmx->segment_cache.bitmask = 0;
+}
+
+static inline u32 vmx_vmentry_ctrl(void)
+{
+	u32 vmentry_ctrl = vmcs_config.vmentry_ctrl;
+	if (pt_mode == PT_MODE_SYSTEM)
+		vmentry_ctrl &= ~(VM_EXIT_PT_CONCEAL_PIP | VM_EXIT_CLEAR_IA32_RTIT_CTL);
+	/* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */
+	return vmentry_ctrl &
+		~(VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL | VM_ENTRY_LOAD_IA32_EFER);
+}
+
+static inline u32 vmx_vmexit_ctrl(void)
+{
+	u32 vmexit_ctrl = vmcs_config.vmexit_ctrl;
+	if (pt_mode == PT_MODE_SYSTEM)
+		vmexit_ctrl &= ~(VM_ENTRY_PT_CONCEAL_PIP | VM_ENTRY_LOAD_IA32_RTIT_CTL);
+	/* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */
+	return vmcs_config.vmexit_ctrl &
+		~(VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | VM_EXIT_LOAD_IA32_EFER);
+}
+
+u32 vmx_exec_control(struct vcpu_vmx *vmx);
+
+static inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm)
+{
+	return container_of(kvm, struct kvm_vmx, kvm);
+}
+
+static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
+{
+	return container_of(vcpu, struct vcpu_vmx, vcpu);
+}
+
+static inline struct pi_desc *vcpu_to_pi_desc(struct kvm_vcpu *vcpu)
+{
+	return &(to_vmx(vcpu)->pi_desc);
+}
+
+struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu);
+void free_vmcs(struct vmcs *vmcs);
+int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
+void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
+void loaded_vmcs_init(struct loaded_vmcs *loaded_vmcs);
+void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs);
+
+static inline struct vmcs *alloc_vmcs(bool shadow)
+{
+	return alloc_vmcs_cpu(shadow, raw_smp_processor_id());
+}
+
+u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa);
+
+static inline void __vmx_flush_tlb(struct kvm_vcpu *vcpu, int vpid,
+				bool invalidate_gpa)
+{
+	if (enable_ept && (invalidate_gpa || !enable_vpid)) {
+		if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
+			return;
+		ept_sync_context(construct_eptp(vcpu,
+						vcpu->arch.mmu->root_hpa));
+	} else {
+		vpid_sync_context(vpid);
+	}
+}
+
+static inline void vmx_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
+{
+	__vmx_flush_tlb(vcpu, to_vmx(vcpu)->vpid, invalidate_gpa);
+}
+
+static inline void decache_tsc_multiplier(struct vcpu_vmx *vmx)
+{
+	vmx->current_tsc_ratio = vmx->vcpu.arch.tsc_scaling_ratio;
+	vmcs_write64(TSC_MULTIPLIER, vmx->current_tsc_ratio);
+}
+
+#endif /* __KVM_X86_VMX_H */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f049ecfac7bb..02c8e095a239 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -69,6 +69,7 @@
 #include <asm/irq_remapping.h>
 #include <asm/mshyperv.h>
 #include <asm/hypervisor.h>
+#include <asm/intel_pt.h>
 
 #define CREATE_TRACE_POINTS
 #include "trace.h"
@@ -213,6 +214,9 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 
 u64 __read_mostly host_xcr0;
 
+struct kmem_cache *x86_fpu_cache;
+EXPORT_SYMBOL_GPL(x86_fpu_cache);
+
 static int emulator_fix_hypercall(struct x86_emulate_ctxt *ctxt);
 
 static inline void kvm_async_pf_hash_reset(struct kvm_vcpu *vcpu)
@@ -1121,7 +1125,13 @@ static u32 msrs_to_save[] = {
 #endif
 	MSR_IA32_TSC, MSR_IA32_CR_PAT, MSR_VM_HSAVE_PA,
 	MSR_IA32_FEATURE_CONTROL, MSR_IA32_BNDCFGS, MSR_TSC_AUX,
-	MSR_IA32_SPEC_CTRL, MSR_IA32_ARCH_CAPABILITIES
+	MSR_IA32_SPEC_CTRL, MSR_IA32_ARCH_CAPABILITIES,
+	MSR_IA32_RTIT_CTL, MSR_IA32_RTIT_STATUS, MSR_IA32_RTIT_CR3_MATCH,
+	MSR_IA32_RTIT_OUTPUT_BASE, MSR_IA32_RTIT_OUTPUT_MASK,
+	MSR_IA32_RTIT_ADDR0_A, MSR_IA32_RTIT_ADDR0_B,
+	MSR_IA32_RTIT_ADDR1_A, MSR_IA32_RTIT_ADDR1_B,
+	MSR_IA32_RTIT_ADDR2_A, MSR_IA32_RTIT_ADDR2_B,
+	MSR_IA32_RTIT_ADDR3_A, MSR_IA32_RTIT_ADDR3_B,
 };
 
 static unsigned num_msrs_to_save;
@@ -2999,6 +3009,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	case KVM_CAP_HYPERV_TLBFLUSH:
 	case KVM_CAP_HYPERV_SEND_IPI:
 	case KVM_CAP_HYPERV_ENLIGHTENED_VMCS:
+	case KVM_CAP_HYPERV_CPUID:
 	case KVM_CAP_PCI_SEGMENT:
 	case KVM_CAP_DEBUGREGS:
 	case KVM_CAP_X86_ROBUST_SINGLESTEP:
@@ -3010,7 +3021,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	case KVM_CAP_HYPERV_TIME:
 	case KVM_CAP_IOAPIC_POLARITY_IGNORED:
 	case KVM_CAP_TSC_DEADLINE_TIMER:
-	case KVM_CAP_ENABLE_CAP_VM:
 	case KVM_CAP_DISABLE_QUIRKS:
 	case KVM_CAP_SET_BOOT_CPU_ID:
  	case KVM_CAP_SPLIT_IRQCHIP:
@@ -3632,7 +3642,7 @@ static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu,
 
 static void fill_xsave(u8 *dest, struct kvm_vcpu *vcpu)
 {
-	struct xregs_state *xsave = &vcpu->arch.guest_fpu.state.xsave;
+	struct xregs_state *xsave = &vcpu->arch.guest_fpu->state.xsave;
 	u64 xstate_bv = xsave->header.xfeatures;
 	u64 valid;
 
@@ -3674,7 +3684,7 @@ static void fill_xsave(u8 *dest, struct kvm_vcpu *vcpu)
 
 static void load_xsave(struct kvm_vcpu *vcpu, u8 *src)
 {
-	struct xregs_state *xsave = &vcpu->arch.guest_fpu.state.xsave;
+	struct xregs_state *xsave = &vcpu->arch.guest_fpu->state.xsave;
 	u64 xstate_bv = *(u64 *)(src + XSAVE_HDR_OFFSET);
 	u64 valid;
 
@@ -3722,7 +3732,7 @@ static void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu,
 		fill_xsave((u8 *) guest_xsave->region, vcpu);
 	} else {
 		memcpy(guest_xsave->region,
-			&vcpu->arch.guest_fpu.state.fxsave,
+			&vcpu->arch.guest_fpu->state.fxsave,
 			sizeof(struct fxregs_state));
 		*(u64 *)&guest_xsave->region[XSAVE_HDR_OFFSET / sizeof(u32)] =
 			XFEATURE_MASK_FPSSE;
@@ -3752,7 +3762,7 @@ static int kvm_vcpu_ioctl_x86_set_xsave(struct kvm_vcpu *vcpu,
 		if (xstate_bv & ~XFEATURE_MASK_FPSSE ||
 			mxcsr & ~mxcsr_feature_mask)
 			return -EINVAL;
-		memcpy(&vcpu->arch.guest_fpu.state.fxsave,
+		memcpy(&vcpu->arch.guest_fpu->state.fxsave,
 			guest_xsave->region, sizeof(struct fxregs_state));
 	}
 	return 0;
@@ -3830,6 +3840,8 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
 		return kvm_hv_activate_synic(vcpu, cap->cap ==
 					     KVM_CAP_HYPERV_SYNIC2);
 	case KVM_CAP_HYPERV_ENLIGHTENED_VMCS:
+		if (!kvm_x86_ops->nested_enable_evmcs)
+			return -ENOTTY;
 		r = kvm_x86_ops->nested_enable_evmcs(vcpu, &vmcs_version);
 		if (!r) {
 			user_ptr = (void __user *)(uintptr_t)cap->args[0];
@@ -4192,6 +4204,25 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
 		r = kvm_x86_ops->set_nested_state(vcpu, user_kvm_nested_state, &kvm_state);
 		break;
 	}
+	case KVM_GET_SUPPORTED_HV_CPUID: {
+		struct kvm_cpuid2 __user *cpuid_arg = argp;
+		struct kvm_cpuid2 cpuid;
+
+		r = -EFAULT;
+		if (copy_from_user(&cpuid, cpuid_arg, sizeof(cpuid)))
+			goto out;
+
+		r = kvm_vcpu_ioctl_get_hv_cpuid(vcpu, &cpuid,
+						cpuid_arg->entries);
+		if (r)
+			goto out;
+
+		r = -EFAULT;
+		if (copy_to_user(cpuid_arg, &cpuid, sizeof(cpuid)))
+			goto out;
+		r = 0;
+		break;
+	}
 	default:
 		r = -EINVAL;
 	}
@@ -4396,7 +4427,7 @@ static int kvm_vm_ioctl_reinject(struct kvm *kvm,
  */
 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 {
-	bool is_dirty = false;
+	bool flush = false;
 	int r;
 
 	mutex_lock(&kvm->slots_lock);
@@ -4407,14 +4438,41 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 	if (kvm_x86_ops->flush_log_dirty)
 		kvm_x86_ops->flush_log_dirty(kvm);
 
-	r = kvm_get_dirty_log_protect(kvm, log, &is_dirty);
+	r = kvm_get_dirty_log_protect(kvm, log, &flush);
 
 	/*
 	 * All the TLBs can be flushed out of mmu lock, see the comments in
 	 * kvm_mmu_slot_remove_write_access().
 	 */
 	lockdep_assert_held(&kvm->slots_lock);
-	if (is_dirty)
+	if (flush)
+		kvm_flush_remote_tlbs(kvm);
+
+	mutex_unlock(&kvm->slots_lock);
+	return r;
+}
+
+int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, struct kvm_clear_dirty_log *log)
+{
+	bool flush = false;
+	int r;
+
+	mutex_lock(&kvm->slots_lock);
+
+	/*
+	 * Flush potentially hardware-cached dirty pages to dirty_bitmap.
+	 */
+	if (kvm_x86_ops->flush_log_dirty)
+		kvm_x86_ops->flush_log_dirty(kvm);
+
+	r = kvm_clear_dirty_log_protect(kvm, log, &flush);
+
+	/*
+	 * All the TLBs can be flushed out of mmu lock, see the comments in
+	 * kvm_mmu_slot_remove_write_access().
+	 */
+	lockdep_assert_held(&kvm->slots_lock);
+	if (flush)
 		kvm_flush_remote_tlbs(kvm);
 
 	mutex_unlock(&kvm->slots_lock);
@@ -4433,8 +4491,8 @@ int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
 	return 0;
 }
 
-static int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
-				   struct kvm_enable_cap *cap)
+int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
+			    struct kvm_enable_cap *cap)
 {
 	int r;
 
@@ -4767,15 +4825,6 @@ set_identity_unlock:
 		r = 0;
 		break;
 	}
-	case KVM_ENABLE_CAP: {
-		struct kvm_enable_cap cap;
-
-		r = -EFAULT;
-		if (copy_from_user(&cap, argp, sizeof(cap)))
-			goto out;
-		r = kvm_vm_ioctl_enable_cap(kvm, &cap);
-		break;
-	}
 	case KVM_MEMORY_ENCRYPT_OP: {
 		r = -ENOTTY;
 		if (kvm_x86_ops->mem_enc_op)
@@ -4844,6 +4893,30 @@ static void kvm_init_msr_list(void)
 			if (!kvm_x86_ops->rdtscp_supported())
 				continue;
 			break;
+		case MSR_IA32_RTIT_CTL:
+		case MSR_IA32_RTIT_STATUS:
+			if (!kvm_x86_ops->pt_supported())
+				continue;
+			break;
+		case MSR_IA32_RTIT_CR3_MATCH:
+			if (!kvm_x86_ops->pt_supported() ||
+			    !intel_pt_validate_hw_cap(PT_CAP_cr3_filtering))
+				continue;
+			break;
+		case MSR_IA32_RTIT_OUTPUT_BASE:
+		case MSR_IA32_RTIT_OUTPUT_MASK:
+			if (!kvm_x86_ops->pt_supported() ||
+				(!intel_pt_validate_hw_cap(PT_CAP_topa_output) &&
+				 !intel_pt_validate_hw_cap(PT_CAP_single_range_output)))
+				continue;
+			break;
+		case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B: {
+			if (!kvm_x86_ops->pt_supported() ||
+				msrs_to_save[i] - MSR_IA32_RTIT_ADDR0_A >=
+				intel_pt_validate_hw_cap(PT_CAP_num_address_ranges) * 2)
+				continue;
+			break;
+		}
 		default:
 			break;
 		}
@@ -6815,11 +6888,30 @@ int kvm_arch_init(void *opaque)
 		goto out;
 	}
 
+	/*
+	 * KVM explicitly assumes that the guest has an FPU and
+	 * FXSAVE/FXRSTOR. For example, the KVM_GET_FPU explicitly casts the
+	 * vCPU's FPU state as a fxregs_state struct.
+	 */
+	if (!boot_cpu_has(X86_FEATURE_FPU) || !boot_cpu_has(X86_FEATURE_FXSR)) {
+		printk(KERN_ERR "kvm: inadequate fpu\n");
+		r = -EOPNOTSUPP;
+		goto out;
+	}
+
 	r = -ENOMEM;
+	x86_fpu_cache = kmem_cache_create("x86_fpu", sizeof(struct fpu),
+					  __alignof__(struct fpu), SLAB_ACCOUNT,
+					  NULL);
+	if (!x86_fpu_cache) {
+		printk(KERN_ERR "kvm: failed to allocate cache for x86 fpu\n");
+		goto out;
+	}
+
 	shared_msrs = alloc_percpu(struct kvm_shared_msrs);
 	if (!shared_msrs) {
 		printk(KERN_ERR "kvm: failed to allocate percpu kvm_shared_msrs\n");
-		goto out;
+		goto out_free_x86_fpu_cache;
 	}
 
 	r = kvm_mmu_module_init();
@@ -6852,6 +6944,8 @@ int kvm_arch_init(void *opaque)
 
 out_free_percpu:
 	free_percpu(shared_msrs);
+out_free_x86_fpu_cache:
+	kmem_cache_destroy(x86_fpu_cache);
 out:
 	return r;
 }
@@ -6875,6 +6969,7 @@ void kvm_arch_exit(void)
 	kvm_x86_ops = NULL;
 	kvm_mmu_module_exit();
 	free_percpu(shared_msrs);
+	kmem_cache_destroy(x86_fpu_cache);
 }
 
 int kvm_vcpu_halt(struct kvm_vcpu *vcpu)
@@ -7998,9 +8093,9 @@ static int complete_emulated_mmio(struct kvm_vcpu *vcpu)
 static void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
 {
 	preempt_disable();
-	copy_fpregs_to_fpstate(&vcpu->arch.user_fpu);
+	copy_fpregs_to_fpstate(&current->thread.fpu);
 	/* PKRU is separately restored in kvm_x86_ops->run.  */
-	__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu.state,
+	__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu->state,
 				~XFEATURE_MASK_PKRU);
 	preempt_enable();
 	trace_kvm_fpu(1);
@@ -8010,8 +8105,8 @@ static void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
 static void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
 {
 	preempt_disable();
-	copy_fpregs_to_fpstate(&vcpu->arch.guest_fpu);
-	copy_kernel_to_fpregs(&vcpu->arch.user_fpu.state);
+	copy_fpregs_to_fpstate(vcpu->arch.guest_fpu);
+	copy_kernel_to_fpregs(&current->thread.fpu.state);
 	preempt_enable();
 	++vcpu->stat.fpu_reload;
 	trace_kvm_fpu(0);
@@ -8505,7 +8600,7 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 
 	vcpu_load(vcpu);
 
-	fxsave = &vcpu->arch.guest_fpu.state.fxsave;
+	fxsave = &vcpu->arch.guest_fpu->state.fxsave;
 	memcpy(fpu->fpr, fxsave->st_space, 128);
 	fpu->fcw = fxsave->cwd;
 	fpu->fsw = fxsave->swd;
@@ -8525,7 +8620,7 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 
 	vcpu_load(vcpu);
 
-	fxsave = &vcpu->arch.guest_fpu.state.fxsave;
+	fxsave = &vcpu->arch.guest_fpu->state.fxsave;
 
 	memcpy(fxsave->st_space, fpu->fpr, 128);
 	fxsave->cwd = fpu->fcw;
@@ -8581,9 +8676,9 @@ static int sync_regs(struct kvm_vcpu *vcpu)
 
 static void fx_init(struct kvm_vcpu *vcpu)
 {
-	fpstate_init(&vcpu->arch.guest_fpu.state);
+	fpstate_init(&vcpu->arch.guest_fpu->state);
 	if (boot_cpu_has(X86_FEATURE_XSAVES))
-		vcpu->arch.guest_fpu.state.xsave.header.xcomp_bv =
+		vcpu->arch.guest_fpu->state.xsave.header.xcomp_bv =
 			host_xcr0 | XSTATE_COMPACTION_ENABLED;
 
 	/*
@@ -8621,6 +8716,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
 
 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
+	vcpu->arch.msr_platform_info = MSR_PLATFORM_INFO_CPUID_FAULT;
 	kvm_vcpu_mtrr_init(vcpu);
 	vcpu_load(vcpu);
 	kvm_vcpu_reset(vcpu, false);
@@ -8707,11 +8803,11 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 		 */
 		if (init_event)
 			kvm_put_guest_fpu(vcpu);
-		mpx_state_buffer = get_xsave_addr(&vcpu->arch.guest_fpu.state.xsave,
+		mpx_state_buffer = get_xsave_addr(&vcpu->arch.guest_fpu->state.xsave,
 					XFEATURE_MASK_BNDREGS);
 		if (mpx_state_buffer)
 			memset(mpx_state_buffer, 0, sizeof(struct mpx_bndreg_state));
-		mpx_state_buffer = get_xsave_addr(&vcpu->arch.guest_fpu.state.xsave,
+		mpx_state_buffer = get_xsave_addr(&vcpu->arch.guest_fpu->state.xsave,
 					XFEATURE_MASK_BNDCSR);
 		if (mpx_state_buffer)
 			memset(mpx_state_buffer, 0, sizeof(struct mpx_bndcsr));
@@ -8723,7 +8819,6 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 		kvm_pmu_reset(vcpu);
 		vcpu->arch.smbase = 0x30000;
 
-		vcpu->arch.msr_platform_info = MSR_PLATFORM_INFO_CPUID_FAULT;
 		vcpu->arch.msr_misc_features_enables = 0;
 
 		vcpu->arch.xcr0 = XFEATURE_MASK_FP;
@@ -9282,7 +9377,7 @@ static void kvm_mmu_slot_apply_flags(struct kvm *kvm,
 	 * with dirty logging disabled in order to eliminate unnecessary GPA
 	 * logging in PML buffer (and potential PML buffer full VMEXT). This
 	 * guarantees leaving PML enabled during guest's lifetime won't have
-	 * any additonal overhead from PML when guest is running with dirty
+	 * any additional overhead from PML when guest is running with dirty
 	 * logging disabled for memory slots.
 	 *
 	 * kvm_x86_ops->slot_enable_log_dirty is called when switching new slot
author	Linus Torvalds	2018-12-26 11:46:28 -0800
committer	Linus Torvalds	2018-12-26 11:46:28 -0800
commit	42b00f122cfbfed79fc29b0b3610f3abbb1e3864 (patch)
tree	c110a18c03e9ada45b6f3593843f0a06b36773dc /arch/x86
parent	460023a5d1d2aa0f733b6708b2fae5ea9f9dfec0 (diff)
parent	a0aea130afebcd091d5396d13f25b9da24c9144a (diff)