diff options
author | Paolo Bonzini | 2015-11-02 13:52:45 +0100 |
---|---|---|
committer | Paolo Bonzini | 2015-11-02 13:52:45 +0100 |
commit | d6cf98e06ea4c4071596bc28f2a0f21412d5c6dc (patch) | |
tree | ee0a079fd91314ea0dfbf3b26dde80bf98b1c0b5 /arch | |
parent | 4d5140c5799e676f5a8fb805105e8806f2db1902 (diff) | |
parent | 70aa3961a196ac32baf54032b2051bac9a941118 (diff) |
Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
There's nothing much in the way of new features this time; it's mostly
bug fixes, plus Nikunj has implemented support for KVM_CAP_NR_MEMSLOTS.
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/include/asm/disassemble.h | 5 | ||||
-rw-r--r-- | arch/powerpc/include/asm/reg_booke.h | 6 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_hv.c | 3 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 29 | ||||
-rw-r--r-- | arch/powerpc/kvm/e500.c | 3 | ||||
-rw-r--r-- | arch/powerpc/kvm/e500_emulate.c | 19 | ||||
-rw-r--r-- | arch/powerpc/kvm/e500_mmu_host.c | 4 | ||||
-rw-r--r-- | arch/powerpc/kvm/powerpc.c | 3 |
9 files changed, 63 insertions, 11 deletions
diff --git a/arch/powerpc/include/asm/disassemble.h b/arch/powerpc/include/asm/disassemble.h index 6330a61b875a..4852e849128b 100644 --- a/arch/powerpc/include/asm/disassemble.h +++ b/arch/powerpc/include/asm/disassemble.h @@ -42,6 +42,11 @@ static inline unsigned int get_dcrn(u32 inst) return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); } +static inline unsigned int get_tmrn(u32 inst) +{ + return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); +} + static inline unsigned int get_rt(u32 inst) { return (inst >> 21) & 0x1f; diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index 16547efa2d5a..2fef74b474f0 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -742,6 +742,12 @@ #define MMUBE1_VBE4 0x00000002 #define MMUBE1_VBE5 0x00000001 +#define TMRN_TMCFG0 16 /* Thread Management Configuration Register 0 */ +#define TMRN_TMCFG0_NPRIBITS 0x003f0000 /* Bits of thread priority */ +#define TMRN_TMCFG0_NPRIBITS_SHIFT 16 +#define TMRN_TMCFG0_NATHRD 0x00003f00 /* Number of active threads */ +#define TMRN_TMCFG0_NATHRD_SHIFT 8 +#define TMRN_TMCFG0_NTHRD 0x0000003f /* Number of threads */ #define TMRN_IMSR0 0x120 /* Initial MSR Register 0 (e6500) */ #define TMRN_IMSR1 0x121 /* Initial MSR Register 1 (e6500) */ #define TMRN_INIA0 0x140 /* Next Instruction Address Register 0 */ diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 1f9c0a17f445..10722b1e38b5 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -70,7 +70,8 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp) } /* Lastly try successively smaller sizes from the page allocator */ - while (!hpt && order > PPC_MIN_HPT_ORDER) { + /* Only do this if userspace didn't specify a size via ioctl */ + while (!hpt && order > PPC_MIN_HPT_ORDER && !htab_orderp) { hpt = __get_free_pages(GFP_KERNEL|__GFP_ZERO|__GFP_REPEAT| __GFP_NOWARN, order - PAGE_SHIFT); if (!hpt) diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index c1df9bb1e413..97e7f8c853d8 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -470,6 +470,8 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, note_hpte_modification(kvm, rev); unlock_hpte(hpte, 0); + if (v & HPTE_V_ABSENT) + v = (v & ~HPTE_V_ABSENT) | HPTE_V_VALID; hpret[0] = v; hpret[1] = r; return H_SUCCESS; diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index b98889e9851d..b1dab8d1d885 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -150,6 +150,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) cmpwi cr1, r12, BOOK3S_INTERRUPT_MACHINE_CHECK cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL beq 11f + cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL + beq 15f /* Invoke the H_DOORBELL handler */ cmpwi cr2, r12, BOOK3S_INTERRUPT_HMI beq cr2, 14f /* HMI check */ @@ -174,6 +176,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mtspr SPRN_HSRR1, r7 b hmi_exception_after_realmode +15: mtspr SPRN_HSRR0, r8 + mtspr SPRN_HSRR1, r7 + ba 0xe80 + kvmppc_primary_no_guest: /* We handle this much like a ceded vcpu */ /* put the HDEC into the DEC, since HDEC interrupts don't wake us */ @@ -2377,7 +2383,6 @@ machine_check_realmode: mr r3, r9 /* get vcpu pointer */ bl kvmppc_realmode_machine_check nop - cmpdi r3, 0 /* Did we handle MCE ? */ ld r9, HSTATE_KVM_VCPU(r13) li r12, BOOK3S_INTERRUPT_MACHINE_CHECK /* @@ -2390,13 +2395,18 @@ machine_check_realmode: * The old code used to return to host for unhandled errors which * was causing guest to hang with soft lockups inside guest and * makes it difficult to recover guest instance. + * + * if we receive machine check with MSR(RI=0) then deliver it to + * guest as machine check causing guest to crash. */ - ld r10, VCPU_PC(r9) ld r11, VCPU_MSR(r9) + andi. r10, r11, MSR_RI /* check for unrecoverable exception */ + beq 1f /* Deliver a machine check to guest */ + ld r10, VCPU_PC(r9) + cmpdi r3, 0 /* Did we handle MCE ? */ bne 2f /* Continue guest execution. */ /* If not, deliver a machine check. SRR0/1 are already set */ - li r10, BOOK3S_INTERRUPT_MACHINE_CHECK - ld r11, VCPU_MSR(r9) +1: li r10, BOOK3S_INTERRUPT_MACHINE_CHECK bl kvmppc_msr_interrupt 2: b fast_interrupt_c_return @@ -2436,14 +2446,19 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) /* hypervisor doorbell */ 3: li r12, BOOK3S_INTERRUPT_H_DOORBELL + + /* + * Clear the doorbell as we will invoke the handler + * explicitly in the guest exit path. + */ + lis r6, (PPC_DBELL_SERVER << (63-36))@h + PPC_MSGCLR(6) /* see if it's a host IPI */ li r3, 1 lbz r0, HSTATE_HOST_IPI(r13) cmpwi r0, 0 bnelr - /* if not, clear it and return -1 */ - lis r6, (PPC_DBELL_SERVER << (63-36))@h - PPC_MSGCLR(6) + /* if not, return -1 */ li r3, -1 blr diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c index b29ce752c7d6..32fdab57d604 100644 --- a/arch/powerpc/kvm/e500.c +++ b/arch/powerpc/kvm/e500.c @@ -237,7 +237,8 @@ void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500, struct kvm_book3e_206_tlb_entry *gtlbe) { struct vcpu_id_table *idt = vcpu_e500->idt; - unsigned int pr, tid, ts, pid; + unsigned int pr, tid, ts; + int pid; u32 val, eaddr; unsigned long flags; diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index ce7291c79f6c..990db69a1d0b 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -15,6 +15,7 @@ #include <asm/kvm_ppc.h> #include <asm/disassemble.h> #include <asm/dbell.h> +#include <asm/reg_booke.h> #include "booke.h" #include "e500.h" @@ -22,6 +23,7 @@ #define XOP_DCBTLS 166 #define XOP_MSGSND 206 #define XOP_MSGCLR 238 +#define XOP_MFTMR 366 #define XOP_TLBIVAX 786 #define XOP_TLBSX 914 #define XOP_TLBRE 946 @@ -113,6 +115,19 @@ static int kvmppc_e500_emul_dcbtls(struct kvm_vcpu *vcpu) return EMULATE_DONE; } +static int kvmppc_e500_emul_mftmr(struct kvm_vcpu *vcpu, unsigned int inst, + int rt) +{ + /* Expose one thread per vcpu */ + if (get_tmrn(inst) == TMRN_TMCFG0) { + kvmppc_set_gpr(vcpu, rt, + 1 | (1 << TMRN_TMCFG0_NATHRD_SHIFT)); + return EMULATE_DONE; + } + + return EMULATE_FAIL; +} + int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int inst, int *advance) { @@ -165,6 +180,10 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, emulated = kvmppc_e500_emul_tlbivax(vcpu, ea); break; + case XOP_MFTMR: + emulated = kvmppc_e500_emul_mftmr(vcpu, inst, rt); + break; + case XOP_EHPRIV: emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst, advance); diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 4d33e199edcc..5e2102c19586 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -406,7 +406,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) { unsigned long gfn_start, gfn_end; - tsize_pages = 1 << (tsize - 2); + tsize_pages = 1UL << (tsize - 2); gfn_start = gfn & ~(tsize_pages - 1); gfn_end = gfn_start + tsize_pages; @@ -447,7 +447,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, } if (likely(!pfnmap)) { - tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT); + tsize_pages = 1UL << (tsize + 10 - PAGE_SHIFT); pfn = gfn_to_pfn_memslot(slot, gfn); if (is_error_noslot_pfn(pfn)) { if (printk_ratelimit()) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 2e51289610e4..6fd2405c7f4a 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -559,6 +559,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) else r = num_online_cpus(); break; + case KVM_CAP_NR_MEMSLOTS: + r = KVM_USER_MEM_SLOTS; + break; case KVM_CAP_MAX_VCPUS: r = KVM_MAX_VCPUS; break; |