diff options
Diffstat (limited to 'arch/x86')
43 files changed, 353 insertions, 1135 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index cbcbfdee3ee0..eb4092568f9e 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -989,12 +989,6 @@ config X86_CPUID with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to /dev/cpu/31/cpuid. -config X86_CPU_DEBUG - tristate "/sys/kernel/debug/x86/cpu/* - CPU Debug support" - ---help--- - If you select this option, this will provide various x86 CPUs - information through debugfs. - choice prompt "High Memory Support" default HIGHMEM4G if !X86_NUMAQ diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 2a4d073d2cf1..f9f472462753 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -308,14 +308,15 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) if (retval) return retval; - regs->cs = __USER32_CS; - regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = - regs->r13 = regs->r14 = regs->r15 = 0; - /* OK, This is the point of no return */ set_personality(PER_LINUX); set_thread_flag(TIF_IA32); - clear_thread_flag(TIF_ABI_PENDING); + + setup_new_exec(bprm); + + regs->cs = __USER32_CS; + regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = + regs->r13 = regs->r14 = regs->r15 = 0; current->mm->end_code = ex.a_text + (current->mm->start_code = N_TXTADDR(ex)); diff --git a/arch/x86/include/asm/amd_iommu_proto.h b/arch/x86/include/asm/amd_iommu_proto.h index 4d817f9e6e77..d2544f1d705d 100644 --- a/arch/x86/include/asm/amd_iommu_proto.h +++ b/arch/x86/include/asm/amd_iommu_proto.h @@ -31,6 +31,7 @@ extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu); extern int amd_iommu_init_devices(void); extern void amd_iommu_uninit_devices(void); extern void amd_iommu_init_notifier(void); +extern void amd_iommu_init_api(void); #ifndef CONFIG_AMD_IOMMU_STATS static inline void amd_iommu_stats_init(void) { } diff --git a/arch/x86/include/asm/cpu_debug.h b/arch/x86/include/asm/cpu_debug.h deleted file mode 100644 index d96c1ee3a95c..000000000000 --- a/arch/x86/include/asm/cpu_debug.h +++ /dev/null @@ -1,127 +0,0 @@ -#ifndef _ASM_X86_CPU_DEBUG_H -#define _ASM_X86_CPU_DEBUG_H - -/* - * CPU x86 architecture debug - * - * Copyright(C) 2009 Jaswinder Singh Rajput - */ - -/* Register flags */ -enum cpu_debug_bit { -/* Model Specific Registers (MSRs) */ - CPU_MC_BIT, /* Machine Check */ - CPU_MONITOR_BIT, /* Monitor */ - CPU_TIME_BIT, /* Time */ - CPU_PMC_BIT, /* Performance Monitor */ - CPU_PLATFORM_BIT, /* Platform */ - CPU_APIC_BIT, /* APIC */ - CPU_POWERON_BIT, /* Power-on */ - CPU_CONTROL_BIT, /* Control */ - CPU_FEATURES_BIT, /* Features control */ - CPU_LBRANCH_BIT, /* Last Branch */ - CPU_BIOS_BIT, /* BIOS */ - CPU_FREQ_BIT, /* Frequency */ - CPU_MTTR_BIT, /* MTRR */ - CPU_PERF_BIT, /* Performance */ - CPU_CACHE_BIT, /* Cache */ - CPU_SYSENTER_BIT, /* Sysenter */ - CPU_THERM_BIT, /* Thermal */ - CPU_MISC_BIT, /* Miscellaneous */ - CPU_DEBUG_BIT, /* Debug */ - CPU_PAT_BIT, /* PAT */ - CPU_VMX_BIT, /* VMX */ - CPU_CALL_BIT, /* System Call */ - CPU_BASE_BIT, /* BASE Address */ - CPU_VER_BIT, /* Version ID */ - CPU_CONF_BIT, /* Configuration */ - CPU_SMM_BIT, /* System mgmt mode */ - CPU_SVM_BIT, /*Secure Virtual Machine*/ - CPU_OSVM_BIT, /* OS-Visible Workaround*/ -/* Standard Registers */ - CPU_TSS_BIT, /* Task Stack Segment */ - CPU_CR_BIT, /* Control Registers */ - CPU_DT_BIT, /* Descriptor Table */ -/* End of Registers flags */ - CPU_REG_ALL_BIT, /* Select all Registers */ -}; - -#define CPU_REG_ALL (~0) /* Select all Registers */ - -#define CPU_MC (1 << CPU_MC_BIT) -#define CPU_MONITOR (1 << CPU_MONITOR_BIT) -#define CPU_TIME (1 << CPU_TIME_BIT) -#define CPU_PMC (1 << CPU_PMC_BIT) -#define CPU_PLATFORM (1 << CPU_PLATFORM_BIT) -#define CPU_APIC (1 << CPU_APIC_BIT) -#define CPU_POWERON (1 << CPU_POWERON_BIT) -#define CPU_CONTROL (1 << CPU_CONTROL_BIT) -#define CPU_FEATURES (1 << CPU_FEATURES_BIT) -#define CPU_LBRANCH (1 << CPU_LBRANCH_BIT) -#define CPU_BIOS (1 << CPU_BIOS_BIT) -#define CPU_FREQ (1 << CPU_FREQ_BIT) -#define CPU_MTRR (1 << CPU_MTTR_BIT) -#define CPU_PERF (1 << CPU_PERF_BIT) -#define CPU_CACHE (1 << CPU_CACHE_BIT) -#define CPU_SYSENTER (1 << CPU_SYSENTER_BIT) -#define CPU_THERM (1 << CPU_THERM_BIT) -#define CPU_MISC (1 << CPU_MISC_BIT) -#define CPU_DEBUG (1 << CPU_DEBUG_BIT) -#define CPU_PAT (1 << CPU_PAT_BIT) -#define CPU_VMX (1 << CPU_VMX_BIT) -#define CPU_CALL (1 << CPU_CALL_BIT) -#define CPU_BASE (1 << CPU_BASE_BIT) -#define CPU_VER (1 << CPU_VER_BIT) -#define CPU_CONF (1 << CPU_CONF_BIT) -#define CPU_SMM (1 << CPU_SMM_BIT) -#define CPU_SVM (1 << CPU_SVM_BIT) -#define CPU_OSVM (1 << CPU_OSVM_BIT) -#define CPU_TSS (1 << CPU_TSS_BIT) -#define CPU_CR (1 << CPU_CR_BIT) -#define CPU_DT (1 << CPU_DT_BIT) - -/* Register file flags */ -enum cpu_file_bit { - CPU_INDEX_BIT, /* index */ - CPU_VALUE_BIT, /* value */ -}; - -#define CPU_FILE_VALUE (1 << CPU_VALUE_BIT) - -#define MAX_CPU_FILES 512 - -struct cpu_private { - unsigned cpu; - unsigned type; - unsigned reg; - unsigned file; -}; - -struct cpu_debug_base { - char *name; /* Register name */ - unsigned flag; /* Register flag */ - unsigned write; /* Register write flag */ -}; - -/* - * Currently it looks similar to cpu_debug_base but once we add more files - * cpu_file_base will go in different direction - */ -struct cpu_file_base { - char *name; /* Register file name */ - unsigned flag; /* Register file flag */ - unsigned write; /* Register write flag */ -}; - -struct cpu_cpuX_base { - struct dentry *dentry; /* Register dentry */ - int init; /* Register index file */ -}; - -struct cpu_debug_range { - unsigned min; /* Register range min */ - unsigned max; /* Register range max */ - unsigned flag; /* Supported flags */ -}; - -#endif /* _ASM_X86_CPU_DEBUG_H */ diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index b4501ee223ad..f2ad2163109d 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -170,10 +170,7 @@ static inline void elf_common_init(struct thread_struct *t, } #define ELF_PLAT_INIT(_r, load_addr) \ -do { \ - elf_common_init(¤t->thread, _r, 0); \ - clear_thread_flag(TIF_IA32); \ -} while (0) + elf_common_init(¤t->thread, _r, 0) #define COMPAT_ELF_PLAT_INIT(regs, load_addr) \ elf_common_init(¤t->thread, regs, __USER_DS) @@ -181,14 +178,8 @@ do { \ void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp); #define compat_start_thread start_thread_ia32 -#define COMPAT_SET_PERSONALITY(ex) \ -do { \ - if (test_thread_flag(TIF_IA32)) \ - clear_thread_flag(TIF_ABI_PENDING); \ - else \ - set_thread_flag(TIF_ABI_PENDING); \ - current->personality |= force_personality32; \ -} while (0) +void set_personality_ia32(void); +#define COMPAT_SET_PERSONALITY(ex) set_personality_ia32() #define COMPAT_ELF_PLATFORM ("i686") diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h index 5d89fd2a3690..1d5c08a1bdfd 100644 --- a/arch/x86/include/asm/hpet.h +++ b/arch/x86/include/asm/hpet.h @@ -67,6 +67,7 @@ extern unsigned long hpet_address; extern unsigned long force_hpet_address; extern u8 hpet_blockid; extern int hpet_force_user; +extern u8 hpet_msi_disable; extern int is_hpet_enabled(void); extern int hpet_enable(void); extern void hpet_disable(void); diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h index c24ca9a56458..ef51b501e22a 100644 --- a/arch/x86/include/asm/microcode.h +++ b/arch/x86/include/asm/microcode.h @@ -12,8 +12,6 @@ struct device; enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND }; struct microcode_ops { - void (*init)(struct device *device); - void (*fini)(void); enum ucode_state (*request_microcode_user) (int cpu, const void __user *buf, size_t size); diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index fc801bab1b3b..b753ea59703a 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -450,6 +450,8 @@ struct thread_struct { struct perf_event *ptrace_bps[HBP_NUM]; /* Debug status used for traps, single steps, etc... */ unsigned long debugreg6; + /* Keep track of the exact dr7 value set by the user */ + unsigned long ptrace_dr7; /* Fault info: */ unsigned long cr2; unsigned long trap_no; diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h index ecb544e65382..e04740f7a0bb 100644 --- a/arch/x86/include/asm/system.h +++ b/arch/x86/include/asm/system.h @@ -11,9 +11,9 @@ #include <linux/irqflags.h> /* entries in ARCH_DLINFO: */ -#ifdef CONFIG_IA32_EMULATION +#if defined(CONFIG_IA32_EMULATION) || !defined(CONFIG_X86_64) # define AT_VECTOR_SIZE_ARCH 2 -#else +#else /* else it's non-compat x86-64 */ # define AT_VECTOR_SIZE_ARCH 1 #endif diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index 375c917c37d2..e0d28901e969 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -87,7 +87,6 @@ struct thread_info { #define TIF_NOTSC 16 /* TSC is not accessible in userland */ #define TIF_IA32 17 /* 32bit process */ #define TIF_FORK 18 /* ret_from_fork */ -#define TIF_ABI_PENDING 19 #define TIF_MEMDIE 20 #define TIF_DEBUG 21 /* uses debug registers */ #define TIF_IO_BITMAP 22 /* uses I/O bitmap */ @@ -112,7 +111,6 @@ struct thread_info { #define _TIF_NOTSC (1 << TIF_NOTSC) #define _TIF_IA32 (1 << TIF_IA32) #define _TIF_FORK (1 << TIF_FORK) -#define _TIF_ABI_PENDING (1 << TIF_ABI_PENDING) #define _TIF_DEBUG (1 << TIF_DEBUG) #define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP) #define _TIF_FREEZE (1 << TIF_FREEZE) diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 036d28adf59d..af1c5833ff23 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1185,9 +1185,6 @@ static void __init acpi_process_madt(void) if (!error) { acpi_lapic = 1; -#ifdef CONFIG_X86_BIGSMP - generic_bigsmp_probe(); -#endif /* * Parse MADT IO-APIC entries */ @@ -1197,8 +1194,6 @@ static void __init acpi_process_madt(void) acpi_ioapic = 1; smp_found_config = 1; - if (apic->setup_apic_routing) - apic->setup_apic_routing(); } } if (error == -EINVAL) { @@ -1349,14 +1344,6 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = { }, { .callback = force_acpi_ht, - .ident = "ASUS P2B-DS", - .matches = { - DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), - DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), - }, - }, - { - .callback = force_acpi_ht, .ident = "ASUS CUR-DLS", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 23824fef789c..adb0ba025702 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, { int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; struct amd_iommu *iommu; - int i; + unsigned long i; #ifdef CONFIG_IOMMU_STRESS populate = false; @@ -1489,11 +1489,14 @@ static void __detach_device(struct device *dev) { struct iommu_dev_data *dev_data = get_dev_data(dev); struct iommu_dev_data *alias_data; + struct protection_domain *domain; unsigned long flags; BUG_ON(!dev_data->domain); - spin_lock_irqsave(&dev_data->domain->lock, flags); + domain = dev_data->domain; + + spin_lock_irqsave(&domain->lock, flags); if (dev_data->alias != dev) { alias_data = get_dev_data(dev_data->alias); @@ -1504,13 +1507,15 @@ static void __detach_device(struct device *dev) if (atomic_dec_and_test(&dev_data->bind)) do_detach(dev); - spin_unlock_irqrestore(&dev_data->domain->lock, flags); + spin_unlock_irqrestore(&domain->lock, flags); /* * If we run in passthrough mode the device must be assigned to the - * passthrough domain if it is detached from any other domain + * passthrough domain if it is detached from any other domain. + * Make sure we can deassign from the pt_domain itself. */ - if (iommu_pass_through && dev_data->domain == NULL) + if (iommu_pass_through && + (dev_data->domain == NULL && domain != pt_domain)) __attach_device(dev, pt_domain); } @@ -2218,6 +2223,12 @@ static struct dma_map_ops amd_iommu_dma_ops = { /* * The function which clues the AMD IOMMU driver into dma_ops. */ + +void __init amd_iommu_init_api(void) +{ + register_iommu(&amd_iommu_ops); +} + int __init amd_iommu_init_dma_ops(void) { struct amd_iommu *iommu; @@ -2253,8 +2264,6 @@ int __init amd_iommu_init_dma_ops(void) /* Make the driver finally visible to the drivers */ dma_ops = &amd_iommu_dma_ops; - register_iommu(&amd_iommu_ops); - amd_iommu_stats_init(); return 0; diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index fb490ce7dd55..9dc91b431470 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -1292,9 +1292,12 @@ static int __init amd_iommu_init(void) ret = amd_iommu_init_passthrough(); else ret = amd_iommu_init_dma_ops(); + if (ret) goto free; + amd_iommu_init_api(); + amd_iommu_init_notifier(); enable_iommus(); diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 3987e4408f75..dfca210f6a10 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1641,9 +1641,7 @@ int __init APIC_init_uniprocessor(void) #endif enable_IR_x2apic(); -#ifdef CONFIG_X86_64 default_setup_apic_routing(); -#endif verify_local_APIC(); connect_bsp_APIC(); @@ -1891,21 +1889,6 @@ void __cpuinit generic_processor_info(int apicid, int version) if (apicid > max_physical_apicid) max_physical_apicid = apicid; -#ifdef CONFIG_X86_32 - if (num_processors > 8) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_INTEL: - if (!APIC_XAPIC(version)) { - def_to_bigsmp = 0; - break; - } - /* If P4 and above fall through */ - case X86_VENDOR_AMD: - def_to_bigsmp = 1; - } - } -#endif - #if defined(CONFIG_SMP) || defined(CONFIG_X86_64) early_per_cpu(x86_cpu_to_apicid, cpu) = apicid; early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid; diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 1a6559f6768c..99d2fe016084 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -52,7 +52,32 @@ static int __init print_ipi_mode(void) } late_initcall(print_ipi_mode); -void default_setup_apic_routing(void) +void __init default_setup_apic_routing(void) +{ + int version = apic_version[boot_cpu_physical_apicid]; + + if (num_possible_cpus() > 8) { + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_INTEL: + if (!APIC_XAPIC(version)) { + def_to_bigsmp = 0; + break; + } + /* If P4 and above fall through */ + case X86_VENDOR_AMD: + def_to_bigsmp = 1; + } + } + +#ifdef CONFIG_X86_BIGSMP + generic_bigsmp_probe(); +#endif + + if (apic->setup_apic_routing) + apic->setup_apic_routing(); +} + +static void setup_apic_flat_routing(void) { #ifdef CONFIG_X86_IO_APIC printk(KERN_INFO @@ -103,7 +128,7 @@ struct apic apic_default = { .init_apic_ldr = default_init_apic_ldr, .ioapic_phys_id_map = default_ioapic_phys_id_map, - .setup_apic_routing = default_setup_apic_routing, + .setup_apic_routing = setup_apic_flat_routing, .multi_timer_check = NULL, .apicid_to_node = default_apicid_to_node, .cpu_to_logical_apicid = default_cpu_to_logical_apicid, diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c index 450fe2064a14..83e9be4778e2 100644 --- a/arch/x86/kernel/apic/probe_64.c +++ b/arch/x86/kernel/apic/probe_64.c @@ -67,7 +67,7 @@ void __init default_setup_apic_routing(void) } #endif - if (apic == &apic_flat && num_processors > 8) + if (apic == &apic_flat && num_possible_cpus() > 8) apic = &apic_physflat; printk(KERN_INFO "Setting APIC routing to %s\n", apic->name); diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 1d2cb383410e..c202b62f3671 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -19,8 +19,6 @@ obj-y += vmware.o hypervisor.o sched.o obj-$(CONFIG_X86_32) += bugs.o cmpxchg.o obj-$(CONFIG_X86_64) += bugs_64.o -obj-$(CONFIG_X86_CPU_DEBUG) += cpu_debug.o - obj-$(CONFIG_CPU_SUP_INTEL) += intel.o obj-$(CONFIG_CPU_SUP_AMD) += amd.o obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c deleted file mode 100644 index b368cd862997..000000000000 --- a/arch/x86/kernel/cpu/cpu_debug.c +++ /dev/null @@ -1,688 +0,0 @@ -/* - * CPU x86 architecture debug code - * - * Copyright(C) 2009 Jaswinder Singh Rajput - * - * For licencing details see kernel-base/COPYING - */ - -#include <linux/interrupt.h> -#include <linux/compiler.h> -#include <linux/seq_file.h> -#include <linux/debugfs.h> -#include <linux/kprobes.h> -#include <linux/uaccess.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/percpu.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/smp.h> - -#include <asm/cpu_debug.h> -#include <asm/paravirt.h> -#include <asm/system.h> -#include <asm/traps.h> -#include <asm/apic.h> -#include <asm/desc.h> - -static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpud_arr); -static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], cpud_priv_arr); -static DEFINE_PER_CPU(int, cpud_priv_count); - -static DEFINE_MUTEX(cpu_debug_lock); - -static struct dentry *cpu_debugfs_dir; - -static struct cpu_debug_base cpu_base[] = { - { "mc", CPU_MC, 0 }, - { "monitor", CPU_MONITOR, 0 }, - { "time", CPU_TIME, 0 }, - { "pmc", CPU_PMC, 1 }, - { "platform", CPU_PLATFORM, 0 }, - { "apic", CPU_APIC, 0 }, - { "poweron", CPU_POWERON, 0 }, - { "control", CPU_CONTROL, 0 }, - { "features", CPU_FEATURES, 0 }, - { "lastbranch", CPU_LBRANCH, 0 }, - { "bios", CPU_BIOS, 0 }, - { "freq", CPU_FREQ, 0 }, - { "mtrr", CPU_MTRR, 0 }, - { "perf", CPU_PERF, 0 }, - { "cache", CPU_CACHE, 0 }, - { "sysenter", CPU_SYSENTER, 0 }, - { "therm", CPU_THERM, 0 }, - { "misc", CPU_MISC, 0 }, - { "debug", CPU_DEBUG, 0 }, - { "pat", CPU_PAT, 0 }, - { "vmx", CPU_VMX, 0 }, - { "call", CPU_CALL, 0 }, - { "base", CPU_BASE, 0 }, - { "ver", CPU_VER, 0 }, - { "conf", CPU_CONF, 0 }, - { "smm", CPU_SMM, 0 }, - { "svm", CPU_SVM, 0 }, - { "osvm", CPU_OSVM, 0 }, - { "tss", CPU_TSS, 0 }, - { "cr", CPU_CR, 0 }, - { "dt", CPU_DT, 0 }, - { "registers", CPU_REG_ALL, 0 }, -}; - -static struct cpu_file_base cpu_file[] = { - { "index", CPU_REG_ALL, 0 }, - { "value", CPU_REG_ALL, 1 }, -}; - -/* CPU Registers Range */ -static struct cpu_debug_range cpu_reg_range[] = { - { 0x00000000, 0x00000001, CPU_MC, }, - { 0x00000006, 0x00000007, CPU_MONITOR, }, - { 0x00000010, 0x00000010, CPU_TIME, }, - { 0x00000011, 0x00000013, CPU_PMC, }, - { 0x00000017, 0x00000017, CPU_PLATFORM, }, - { 0x0000001B, 0x0000001B, CPU_APIC, }, - { 0x0000002A, 0x0000002B, CPU_POWERON, }, - { 0x0000002C, 0x0000002C, CPU_FREQ, }, - { 0x0000003A, 0x0000003A, CPU_CONTROL, }, - { 0x00000040, 0x00000047, CPU_LBRANCH, }, - { 0x00000060, 0x00000067, CPU_LBRANCH, }, - { 0x00000079, 0x00000079, CPU_BIOS, }, - { 0x00000088, 0x0000008A, CPU_CACHE, }, - { 0x0000008B, 0x0000008B, CPU_BIOS, }, - { 0x0000009B, 0x0000009B, CPU_MONITOR, }, - { 0x000000C1, 0x000000C4, CPU_PMC, }, - { 0x000000CD, 0x000000CD, CPU_FREQ, }, - { 0x000000E7, 0x000000E8, CPU_PERF, }, - { 0x000000FE, 0x000000FE, CPU_MTRR, }, - - { 0x00000116, 0x0000011E, CPU_CACHE, }, - { 0x00000174, 0x00000176, CPU_SYSENTER, }, - { 0x00000179, 0x0000017B, CPU_MC, }, - { 0x00000186, 0x00000189, CPU_PMC, }, - { 0x00000198, 0x00000199, CPU_PERF, }, - { 0x0000019A, 0x0000019A, CPU_TIME, }, - { 0x0000019B, 0x0000019D, CPU_THERM, }, - { 0x000001A0, 0x000001A0, CPU_MISC, }, - { 0x000001C9, 0x000001C9, CPU_LBRANCH, }, - { 0x000001D7, 0x000001D8, CPU_LBRANCH, }, - { 0x000001D9, 0x000001D9, CPU_DEBUG, }, - { 0x000001DA, 0x000001E0, CPU_LBRANCH, }, - - { 0x00000200, 0x0000020F, CPU_MTRR, }, - { 0x00000250, 0x00000250, CPU_MTRR, }, - { 0x00000258, 0x00000259, CPU_MTRR, }, - { 0x00000268, 0x0000026F, CPU_MTRR, }, - { 0x00000277, 0x00000277, CPU_PAT, }, - { 0x000002FF, 0x000002FF, CPU_MTRR, }, - - { 0x00000300, 0x00000311, CPU_PMC, }, - { 0x00000345, 0x00000345, CPU_PMC, }, - { 0x00000360, 0x00000371, CPU_PMC, }, - { 0x0000038D, 0x00000390, CPU_PMC, }, - { 0x000003A0, 0x000003BE, CPU_PMC, }, - { 0x000003C0, 0x000003CD, CPU_PMC, }, - { 0x000003E0, 0x000003E1, CPU_PMC, }, - { 0x000003F0, 0x000003F2, CPU_PMC, }, - - { 0x00000400, 0x00000417, CPU_MC, }, - { 0x00000480, 0x0000048B, CPU_VMX, }, - - { 0x00000600, 0x00000600, CPU_DEBUG, }, - { 0x00000680, 0x0000068F, CPU_LBRANCH, }, - { 0x000006C0, 0x000006CF, CPU_LBRANCH, }, - - { 0x000107CC, 0x000107D3, CPU_PMC, }, - - { 0xC0000080, 0xC0000080, CPU_FEATURES, }, - { 0xC0000081, 0xC0000084, CPU_CALL, }, - { 0xC0000100, 0xC0000102, CPU_BASE, }, - { 0xC0000103, 0xC0000103, CPU_TIME, }, - - { 0xC0010000, 0xC0010007, CPU_PMC, }, - { 0xC0010010, 0xC0010010, CPU_CONF, }, - { 0xC0010015, 0xC0010015, CPU_CONF, }, - { 0xC0010016, 0xC001001A, CPU_MTRR, }, - { 0xC001001D, 0xC001001D, CPU_MTRR, }, - { 0xC001001F, 0xC001001F, CPU_CONF, }, - { 0xC0010030, 0xC0010035, CPU_BIOS, }, - { 0xC0010044, 0xC0010048, CPU_MC, }, - { 0xC0010050, 0xC0010056, CPU_SMM, }, - { 0xC0010058, 0xC0010058, CPU_CONF, }, - { 0xC0010060, 0xC0010060, CPU_CACHE, }, - { 0xC0010061, 0xC0010068, CPU_SMM, }, - { 0xC0010069, 0xC001006B, CPU_SMM, }, - { 0xC0010070, 0xC0010071, CPU_SMM, }, - { 0xC0010111, 0xC0010113, CPU_SMM, }, - { 0xC0010114, 0xC0010118, CPU_SVM, }, - { 0xC0010140, 0xC0010141, CPU_OSVM, }, - { 0xC0011022, 0xC0011023, CPU_CONF, }, -}; - -static int is_typeflag_valid(unsigned cpu, unsigned flag) -{ - int i; - - /* Standard Registers should be always valid */ - if (flag >= CPU_TSS) - return 1; - - for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) { - if (cpu_reg_range[i].flag == flag) - return 1; - } - - /* Invalid */ - return 0; -} - -static unsigned get_cpu_range(unsigned cpu, unsigned *min, unsigned *max, - int index, unsigned flag) -{ - if (cpu_reg_range[index].flag == flag) { - *min = cpu_reg_range[index].min; - *max = cpu_reg_range[index].max; - } else - *max = 0; - - return *max; -} - -/* This function can also be called with seq = NULL for printk */ -static void print_cpu_data(struct seq_file *seq, unsigned type, - u32 low, u32 high) -{ - struct cpu_private *priv; - u64 val = high; - - if (seq) { - priv = seq->private; - if (priv->file) { - val = (val << 32) | low; - seq_printf(seq, "0x%llx\n", val); - } else - seq_printf(seq, " %08x: %08x_%08x\n", - type, high, low); - } else - printk(KERN_INFO " %08x: %08x_%08x\n", type, high, low); -} - -/* This function can also be called with seq = NULL for printk */ -static void print_msr(struct seq_file *seq, unsigned cpu, unsigned flag) -{ - unsigned msr, msr_min, msr_max; - struct cpu_private *priv; - u32 low, high; - int i; - - if (seq) { - priv = seq->private; - if (priv->file) { - if (!rdmsr_safe_on_cpu(priv->cpu, priv->reg, - &low, &high)) - print_cpu_data(seq, priv->reg, low, high); - return; - } - } - - for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) { - if (!get_cpu_range(cpu, &msr_min, &msr_max, i, flag)) - continue; - - for (msr = msr_min; msr <= msr_max; msr++) { - if (rdmsr_safe_on_cpu(cpu, msr, &low, &high)) - continue; - print_cpu_data(seq, msr, low, high); - } - } -} - -static void print_tss(void *arg) -{ - struct pt_regs *regs = task_pt_regs(current); - struct seq_file *seq = arg; - unsigned int seg; - - seq_printf(seq, " RAX\t: %016lx\n", regs->ax); - seq_printf(seq, " RBX\t: %016lx\n", regs->bx); - seq_printf(seq, " RCX\t: %016lx\n", regs->cx); - seq_printf(seq, " RDX\t: %016lx\n", regs->dx); - - seq_printf(seq, " RSI\t: %016lx\n", regs->si); - seq_printf(seq, " RDI\t: %016lx\n", regs->di); - seq_printf(seq, " RBP\t: %016lx\n", regs->bp); - seq_printf(seq, " ESP\t: %016lx\n", regs->sp); - -#ifdef CONFIG_X86_64 - seq_printf(seq, " R08\t: %016lx\n", regs->r8); - seq_printf(seq, " R09\t: %016lx\n", regs->r9); - seq_printf(seq, " R10\t: %016lx\n", regs->r10); - seq_printf(seq, " R11\t: %016lx\n", regs->r11); - seq_printf(seq, " R12\t: %016lx\n", regs->r12); - seq_printf(seq, " R13\t: %016lx\n", regs->r13); - seq_printf(seq, " R14\t: %016lx\n", regs->r14); - seq_printf(seq, " R15\t: %016lx\n", regs->r15); -#endif - - asm("movl %%cs,%0" : "=r" (seg)); - seq_printf(seq, " CS\t: %04x\n", seg); - asm("movl %%ds,%0" : "=r" (seg)); - seq_printf(seq, " DS\t: %04x\n", seg); - seq_printf(seq, " SS\t: %04lx\n", regs->ss & 0xffff); - asm("movl %%es,%0" : "=r" (seg)); - seq_printf(seq, " ES\t: %04x\n", seg); - asm("movl %%fs,%0" : "=r" (seg)); - seq_printf(seq, " FS\t: %04x\n", seg); - asm("movl %%gs,%0" : "=r" (seg)); - seq_printf(seq, " GS\t: %04x\n", seg); - - seq_printf(seq, " EFLAGS\t: %016lx\n", regs->flags); - - seq_printf(seq, " EIP\t: %016lx\n", regs->ip); -} - -static void print_cr(void *arg) -{ - struct seq_file *seq = arg; - - seq_printf(seq, " cr0\t: %016lx\n", read_cr0()); - seq_printf(seq, " cr2\t: %016lx\n", read_cr2()); - seq_printf(seq, " cr3\t: %016lx\n", read_cr3()); - seq_printf(seq, " cr4\t: %016lx\n", read_cr4_safe()); -#ifdef CONFIG_X86_64 - seq_printf(seq, " cr8\t: %016lx\n", read_cr8()); -#endif -} - -static void print_desc_ptr(char *str, struct seq_file *seq, struct desc_ptr dt) -{ - seq_printf(seq, " %s\t: %016llx\n", str, (u64)(dt.address | dt.size)); -} - -static void print_dt(void *seq) -{ - struct desc_ptr dt; - unsigned long ldt; - - /* IDT */ - store_idt((struct desc_ptr *)&dt); - print_desc_ptr("IDT", seq, dt); - - /* GDT */ - store_gdt((struct desc_ptr *)&dt); - print_desc_ptr("GDT", seq, dt); - - /* LDT */ - store_ldt(ldt); - seq_printf(seq, " LDT\t: %016lx\n", ldt); - - /* TR */ - store_tr(ldt); - seq_printf(seq, " TR\t: %016lx\n", ldt); -} - -static void print_dr(void *arg) -{ - struct seq_file *seq = arg; - unsigned long dr; - int i; - - for (i = 0; i < 8; i++) { - /* Ignore db4, db5 */ - if ((i == 4) || (i == 5)) - continue; - get_debugreg(dr, i); - seq_printf(seq, " dr%d\t: %016lx\n", i, dr); - } - - seq_printf(seq, "\n MSR\t:\n"); -} - -static void print_apic(void *arg) -{ - struct seq_file *seq = arg; - -#ifdef CONFIG_X86_LOCAL_APIC - seq_printf(seq, " LAPIC\t:\n"); - seq_printf(seq, " ID\t\t: %08x\n", apic_read(APIC_ID) >> 24); - seq_printf(seq, " LVR\t\t: %08x\n", apic_read(APIC_LVR)); - seq_printf(seq, " TASKPRI\t: %08x\n", apic_read(APIC_TASKPRI)); - seq_printf(seq, " ARBPRI\t\t: %08x\n", apic_read(APIC_ARBPRI)); - seq_printf(seq, " PROCPRI\t: %08x\n", apic_read(APIC_PROCPRI)); - seq_printf(seq, " LDR\t\t: %08x\n", apic_read(APIC_LDR)); - seq_printf(seq, " DFR\t\t: %08x\n", apic_read(APIC_DFR)); - seq_printf(seq, " SPIV\t\t: %08x\n", apic_read(APIC_SPIV)); - seq_printf(seq, " ISR\t\t: %08x\n", apic_read(APIC_ISR)); - seq_printf(seq, " ESR\t\t: %08x\n", apic_read(APIC_ESR)); - seq_printf(seq, " ICR\t\t: %08x\n", apic_read(APIC_ICR)); - seq_printf(seq, " ICR2\t\t: %08x\n", apic_read(APIC_ICR2)); - seq_printf(seq, " LVTT\t\t: %08x\n", apic_read(APIC_LVTT)); - seq_printf(seq, " LVTTHMR\t: %08x\n", apic_read(APIC_LVTTHMR)); - seq_printf(seq, " LVTPC\t\t: %08x\n", apic_read(APIC_LVTPC)); - seq_printf(seq, " LVT0\t\t: %08x\n", apic_read(APIC_LVT0)); - seq_printf(seq, " LVT1\t\t: %08x\n", apic_read(APIC_LVT1)); - seq_printf(seq, " LVTERR\t\t: %08x\n", apic_read(APIC_LVTERR)); - seq_printf(seq, " TMICT\t\t: %08x\n", apic_read(APIC_TMICT)); - seq_printf(seq, " TMCCT\t\t: %08x\n", apic_read(APIC_TMCCT)); - seq_printf(seq, " TDCR\t\t: %08x\n", apic_read(APIC_TDCR)); - if (boot_cpu_has(X86_FEATURE_EXTAPIC)) { - unsigned int i, v, maxeilvt; - - v = apic_read(APIC_EFEAT); - maxeilvt = (v >> 16) & 0xff; - seq_printf(seq, " EFEAT\t\t: %08x\n", v); - seq_printf(seq, " ECTRL\t\t: %08x\n", apic_read(APIC_ECTRL)); - - for (i = 0; i < maxeilvt; i++) { - v = apic_read(APIC_EILVTn(i)); - seq_printf(seq, " EILVT%d\t\t: %08x\n", i, v); - } - } -#endif /* CONFIG_X86_LOCAL_APIC */ - seq_printf(seq, "\n MSR\t:\n"); -} - -static int cpu_seq_show(struct seq_file *seq, void *v) -{ - struct cpu_private *priv = seq->private; - - if (priv == NULL) - return -EINVAL; - - switch (cpu_base[priv->type].flag) { - case CPU_TSS: - smp_call_function_single(priv->cpu, print_tss, seq, 1); - break; - case CPU_CR: - smp_call_function_single(priv->cpu, print_cr, seq, 1); - break; - case CPU_DT: - smp_call_function_single(priv->cpu, print_dt, seq, 1); - break; - case CPU_DEBUG: - if (priv->file == CPU_INDEX_BIT) - smp_call_function_single(priv->cpu, print_dr, seq, 1); - print_msr(seq, priv->cpu, cpu_base[priv->type].flag); - break; - case CPU_APIC: - if (priv->file == CPU_INDEX_BIT) - smp_call_function_single(priv->cpu, print_apic, seq, 1); - print_msr(seq, priv->cpu, cpu_base[priv->type].flag); - break; - - default: - print_msr(seq, priv->cpu, cpu_base[priv->type].flag); - break; - } - seq_printf(seq, "\n"); - - return 0; -} - -static void *cpu_seq_start(struct seq_file *seq, loff_t *pos) -{ - if (*pos == 0) /* One time is enough ;-) */ - return seq; - - return NULL; -} - -static void *cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - (*pos)++; - - return cpu_seq_start(seq, pos); -} - -static void cpu_seq_stop(struct seq_file *seq, void *v) -{ -} - -static const struct seq_operations cpu_seq_ops = { - .start = cpu_seq_start, - .next = cpu_seq_next, - .stop = cpu_seq_stop, - .show = cpu_seq_show, -}; - -static int cpu_seq_open(struct inode *inode, struct file *file) -{ - struct cpu_private *priv = inode->i_private; - struct seq_file *seq; - int err; - - err = seq_open(file, &cpu_seq_ops); - if (!err) { - seq = file->private_data; - seq->private = priv; - } - - return err; -} - -static int write_msr(struct cpu_private *priv, u64 val) -{ - u32 low, high; - - high = (val >> 32) & 0xffffffff; - low = val & 0xffffffff; - - if (!wrmsr_safe_on_cpu(priv->cpu, priv->reg, low, high)) - return 0; - - return -EPERM; -} - -static int write_cpu_register(struct cpu_private *priv, const char *buf) -{ - int ret = -EPERM; - u64 val; - - ret = strict_strtoull(buf, 0, &val); - if (ret < 0) - return ret; - - /* Supporting only MSRs */ - if (priv->type < CPU_TSS_BIT) - return write_msr(priv, val); - - return ret; -} - -static ssize_t cpu_write(struct file *file, const char __user *ubuf, - size_t count, loff_t *off) -{ - struct seq_file *seq = file->private_data; - struct cpu_private *priv = seq->private; - char buf[19]; - - if ((priv == NULL) || (count >= sizeof(buf))) - return -EINVAL; - - if (copy_from_user(&buf, ubuf, count)) - return -EFAULT; - - buf[count] = 0; - - if ((cpu_base[priv->type].write) && (cpu_file[priv->file].write)) - if (!write_cpu_register(priv, buf)) - return count; - - return -EACCES; -} - -static const struct file_operations cpu_fops = { - .owner = THIS_MODULE, - .open = cpu_seq_open, - .read = seq_read, - .write = cpu_write, - .llseek = seq_lseek, - .release = seq_release, -}; - -static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg, - unsigned file, struct dentry *dentry) -{ - struct cpu_private *priv = NULL; - - /* Already intialized */ - if (file == CPU_INDEX_BIT) - if (per_cpu(cpud_arr[type].init, cpu)) - return 0; - - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (priv == NULL) - return -ENOMEM; - - priv->cpu = cpu; - priv->type = type; - priv->reg = reg; - priv->file = file; - mutex_lock(&cpu_debug_lock); - per_cpu(cpud_priv_arr[type], cpu) = priv; - per_cpu(cpud_priv_count, cpu)++; - mutex_unlock(&cpu_debug_lock); - - if (file) - debugfs_create_file(cpu_file[file].name, S_IRUGO, - dentry, (void *)priv, &cpu_fops); - else { - debugfs_create_file(cpu_base[type].name, S_IRUGO, - per_cpu(cpud_arr[type].dentry, cpu), - (void *)priv, &cpu_fops); - mutex_lock(&cpu_debug_lock); - per_cpu(cpud_arr[type].init, cpu) = 1; - mutex_unlock(&cpu_debug_lock); - } - - return 0; -} - -static int cpu_init_regfiles(unsigned cpu, unsigned int type, unsigned reg, - struct dentry *dentry) -{ - unsigned file; - int err = 0; - - for (file = 0; file < ARRAY_SIZE(cpu_file); file++) { - err = cpu_create_file(cpu, type, reg, file, dentry); - if (err) - return err; - } - - return err; -} - -static int cpu_init_msr(unsigned cpu, unsigned type, struct dentry *dentry) -{ - struct dentry *cpu_dentry = NULL; - unsigned reg, reg_min, reg_max; - int i, err = 0; - char reg_dir[12]; - u32 low, high; - - for (i = 0; i < ARRAY_SIZE(cpu_reg_range); i++) { - if (!get_cpu_range(cpu, ®_min, ®_max, i, - cpu_base[type].flag)) - continue; - - for (reg = reg_min; reg <= reg_max; reg++) { - if (rdmsr_safe_on_cpu(cpu, reg, &low, &high)) - continue; - - sprintf(reg_dir, "0x%x", reg); - cpu_dentry = debugfs_create_dir(reg_dir, dentry); - err = cpu_init_regfiles(cpu, type, reg, cpu_dentry); - if (err) - return err; - } - } - - return err; -} - -static int cpu_init_allreg(unsigned cpu, struct dentry *dentry) -{ - struct dentry *cpu_dentry = NULL; - unsigned type; - int err = 0; - - for (type = 0; type < ARRAY_SIZE(cpu_base) - 1; type++) { - if (!is_typeflag_valid(cpu, cpu_base[type].flag)) - continue; - cpu_dentry = debugfs_create_dir(cpu_base[type].name, dentry); - per_cpu(cpud_arr[type].dentry, cpu) = cpu_dentry; - - if (type < CPU_TSS_BIT) - err = cpu_init_msr(cpu, type, cpu_dentry); - else - err = cpu_create_file(cpu, type, 0, CPU_INDEX_BIT, - cpu_dentry); - if (err) - return err; - } - - return err; -} - -static int cpu_init_cpu(void) -{ - struct dentry *cpu_dentry = NULL; - struct cpuinfo_x86 *cpui; - char cpu_dir[12]; - unsigned cpu; - int err = 0; - - for (cpu = 0; cpu < nr_cpu_ids; cpu++) { - cpui = &cpu_data(cpu); - if (!cpu_has(cpui, X86_FEATURE_MSR)) - continue; - - sprintf(cpu_dir, "cpu%d", cpu); - cpu_dentry = debugfs_create_dir(cpu_dir, cpu_debugfs_dir); - err = cpu_init_allreg(cpu, cpu_dentry); - - pr_info("cpu%d(%d) debug files %d\n", - cpu, nr_cpu_ids, per_cpu(cpud_priv_count, cpu)); - if (per_cpu(cpud_priv_count, cpu) > MAX_CPU_FILES) { - pr_err("Register files count %d exceeds limit %d\n", - per_cpu(cpud_priv_count, cpu), MAX_CPU_FILES); - per_cpu(cpud_priv_count, cpu) = MAX_CPU_FILES; - err = -ENFILE; - } - if (err) - return err; - } - - return err; -} - -static int __init cpu_debug_init(void) -{ - cpu_debugfs_dir = debugfs_create_dir("cpu", arch_debugfs_dir); - - return cpu_init_cpu(); -} - -static void __exit cpu_debug_exit(void) -{ - int i, cpu; - - if (cpu_debugfs_dir) - debugfs_remove_recursive(cpu_debugfs_dir); - - for (cpu = 0; cpu < nr_cpu_ids; cpu++) - for (i = 0; i < per_cpu(cpud_priv_count, cpu); i++) - kfree(per_cpu(cpud_priv_arr[i], cpu)); -} - -module_init(cpu_debug_init); -module_exit(cpu_debug_exit); - -MODULE_AUTHOR("Jaswinder Singh Rajput"); -MODULE_DESCRIPTION("CPU Debug module"); -MODULE_LICENSE("GPL"); diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c index f125e5c551c0..6e44519960c8 100644 --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c +++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c @@ -1356,6 +1356,7 @@ static int __devexit powernowk8_cpu_exit(struct cpufreq_policy *pol) kfree(data->powernow_table); kfree(data); + per_cpu(powernow_data, pol->cpu) = NULL; return 0; } @@ -1375,7 +1376,7 @@ static unsigned int powernowk8_get(unsigned int cpu) int err; if (!data) - return -EINVAL; + return 0; smp_call_function_single(cpu, query_values_on_cpu, &err, true); if (err) diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index cb27fd6136c9..83e5e628de73 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -229,7 +229,7 @@ static void __exit cpuid_exit(void) for_each_online_cpu(cpu) cpuid_device_destroy(cpu); class_destroy(cpuid_class); - unregister_chrdev(CPUID_MAJOR, "cpu/cpuid"); + __unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid"); unregister_hotcpu_notifier(&cpuid_class_cpu_notifier); } diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index ba6e65884603..ad80a1c718c6 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -34,6 +34,8 @@ */ unsigned long hpet_address; u8 hpet_blockid; /* OS timer block num */ +u8 hpet_msi_disable; + #ifdef CONFIG_PCI_MSI static unsigned long hpet_num_timers; #endif @@ -596,6 +598,9 @@ static void hpet_msi_capability_lookup(unsigned int start_timer) unsigned int num_timers_used = 0; int i; + if (hpet_msi_disable) + return; + if (boot_cpu_has(X86_FEATURE_ARAT)) return; id = hpet_readl(HPET_ID); @@ -928,6 +933,9 @@ static __init int hpet_late_init(void) hpet_reserve_platform_timers(hpet_readl(HPET_ID)); hpet_print_config(); + if (hpet_msi_disable) + return 0; + if (boot_cpu_has(X86_FEATURE_ARAT)) return 0; diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c index ae90b4739435..dca2802c666f 100644 --- a/arch/x86/kernel/hw_breakpoint.c +++ b/arch/x86/kernel/hw_breakpoint.c @@ -212,25 +212,6 @@ static int arch_check_va_in_kernelspace(unsigned long va, u8 hbp_len) return (va >= TASK_SIZE) && ((va + len - 1) >= TASK_SIZE); } -/* - * Store a breakpoint's encoded address, length, and type. - */ -static int arch_store_info(struct perf_event *bp) -{ - struct arch_hw_breakpoint *info = counter_arch_bp(bp); - /* - * For kernel-addresses, either the address or symbol name can be - * specified. - */ - if (info->name) - info->address = (unsigned long) - kallsyms_lookup_name(info->name); - if (info->address) - return 0; - - return -EINVAL; -} - int arch_bp_generic_fields(int x86_len, int x86_type, int *gen_len, int *gen_type) { @@ -362,10 +343,13 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp, return ret; } - ret = arch_store_info(bp); - - if (ret < 0) - return ret; + /* + * For kernel-addresses, either the address or symbol name can be + * specified. + */ + if (info->name) + info->address = (unsigned long) + kallsyms_lookup_name(info->name); /* * Check that the low-order bits of the address are appropriate * for the alignment implied by len. diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index dd74fe7273b1..bfba6019d762 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -42,6 +42,7 @@ #include <linux/init.h> #include <linux/smp.h> #include <linux/nmi.h> +#include <linux/hw_breakpoint.h> #include <asm/debugreg.h> #include <asm/apicdef.h> @@ -204,40 +205,81 @@ void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs) static struct hw_breakpoint { unsigned enabled; - unsigned type; - unsigned len; unsigned long addr; + int len; + int type; + struct perf_event **pev; } breakinfo[4]; static void kgdb_correct_hw_break(void) { - unsigned long dr7; - int correctit = 0; - int breakbit; int breakno; - get_debugreg(dr7, 7); for (breakno = 0; breakno < 4; breakno++) { - breakbit = 2 << (breakno << 1); - if (!(dr7 & breakbit) && breakinfo[breakno].enabled) { - correctit = 1; - dr7 |= breakbit; - dr7 &= ~(0xf0000 << (breakno << 2)); - dr7 |= ((breakinfo[breakno].len << 2) | - breakinfo[breakno].type) << - ((breakno << 2) + 16); - set_debugreg(breakinfo[breakno].addr, breakno); - - } else { - if ((dr7 & breakbit) && !breakinfo[breakno].enabled) { - correctit = 1; - dr7 &= ~breakbit; - dr7 &= ~(0xf0000 << (breakno << 2)); - } - } + struct perf_event *bp; + struct arch_hw_breakpoint *info; + int val; + int cpu = raw_smp_processor_id(); + if (!breakinfo[breakno].enabled) + continue; + bp = *per_cpu_ptr(breakinfo[breakno].pev, cpu); + info = counter_arch_bp(bp); + if (bp->attr.disabled != 1) + continue; + bp->attr.bp_addr = breakinfo[breakno].addr; + bp->attr.bp_len = breakinfo[breakno].len; + bp->attr.bp_type = breakinfo[breakno].type; + info->address = breakinfo[breakno].addr; + info->len = breakinfo[breakno].len; + info->type = breakinfo[breakno].type; + val = arch_install_hw_breakpoint(bp); + if (!val) + bp->attr.disabled = 0; + } + hw_breakpoint_restore(); +} + +static int hw_break_reserve_slot(int breakno) +{ + int cpu; + int cnt = 0; + struct perf_event **pevent; + + for_each_online_cpu(cpu) { + cnt++; + pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu); + if (dbg_reserve_bp_slot(*pevent)) + goto fail; + } + + return 0; + +fail: + for_each_online_cpu(cpu) { + cnt--; + if (!cnt) + break; + pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu); + dbg_release_bp_slot(*pevent); } - if (correctit) - set_debugreg(dr7, 7); + return -1; +} + +static int hw_break_release_slot(int breakno) +{ + struct perf_event **pevent; + int cpu; + + for_each_online_cpu(cpu) { + pevent = per_cpu_ptr(breakinfo[breakno].pev, cpu); + if (dbg_release_bp_slot(*pevent)) + /* + * The debugger is responisble for handing the retry on + * remove failure. + */ + return -1; + } + return 0; } static int @@ -251,6 +293,10 @@ kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) if (i == 4) return -1; + if (hw_break_release_slot(i)) { + printk(KERN_ERR "Cannot remove hw breakpoint at %lx\n", addr); + return -1; + } breakinfo[i].enabled = 0; return 0; @@ -259,15 +305,23 @@ kgdb_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) static void kgdb_remove_all_hw_break(void) { int i; + int cpu = raw_smp_processor_id(); + struct perf_event *bp; - for (i = 0; i < 4; i++) - memset(&breakinfo[i], 0, sizeof(struct hw_breakpoint)); + for (i = 0; i < 4; i++) { + if (!breakinfo[i].enabled) + continue; + bp = *per_cpu_ptr(breakinfo[i].pev, cpu); + if (bp->attr.disabled == 1) + continue; + arch_uninstall_hw_breakpoint(bp); + bp->attr.disabled = 1; + } } static int kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) { - unsigned type; int i; for (i = 0; i < 4; i++) @@ -278,27 +332,42 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) switch (bptype) { case BP_HARDWARE_BREAKPOINT: - type = 0; - len = 1; + len = 1; + breakinfo[i].type = X86_BREAKPOINT_EXECUTE; break; case BP_WRITE_WATCHPOINT: - type = 1; + breakinfo[i].type = X86_BREAKPOINT_WRITE; break; case BP_ACCESS_WATCHPOINT: - type = 3; + breakinfo[i].type = X86_BREAKPOINT_RW; break; default: return -1; } - - if (len == 1 || len == 2 || len == 4) - breakinfo[i].len = len - 1; - else + switch (len) { + case 1: + breakinfo[i].len = X86_BREAKPOINT_LEN_1; + break; + case 2: + breakinfo[i].len = X86_BREAKPOINT_LEN_2; + break; + case 4: + breakinfo[i].len = X86_BREAKPOINT_LEN_4; + break; +#ifdef CONFIG_X86_64 + case 8: + breakinfo[i].len = X86_BREAKPOINT_LEN_8; + break; +#endif + default: return -1; - - breakinfo[i].enabled = 1; + } breakinfo[i].addr = addr; - breakinfo[i].type = type; + if (hw_break_reserve_slot(i)) { + breakinfo[i].addr = 0; + return -1; + } + breakinfo[i].enabled = 1; return 0; } @@ -313,8 +382,21 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) */ void kgdb_disable_hw_debug(struct pt_regs *regs) { + int i; + int cpu = raw_smp_processor_id(); + struct perf_event *bp; + /* Disable hardware debugging while we are in kgdb: */ set_debugreg(0UL, 7); + for (i = 0; i < 4; i++) { + if (!breakinfo[i].enabled) + continue; + bp = *per_cpu_ptr(breakinfo[i].pev, cpu); + if (bp->attr.disabled == 1) + continue; + arch_uninstall_hw_breakpoint(bp); + bp->attr.disabled = 1; + } } /** @@ -378,7 +460,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, struct pt_regs *linux_regs) { unsigned long addr; - unsigned long dr6; char *ptr; int newPC; @@ -404,20 +485,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, raw_smp_processor_id()); } - get_debugreg(dr6, 6); - if (!(dr6 & 0x4000)) { - int breakno; - - for (breakno = 0; breakno < 4; breakno++) { - if (dr6 & (1 << breakno) && - breakinfo[breakno].type == 0) { - /* Set restore flag: */ - linux_regs->flags |= X86_EFLAGS_RF; - break; - } - } - } - set_debugreg(0UL, 6); kgdb_correct_hw_break(); return 0; @@ -485,8 +552,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd) break; case DIE_DEBUG: - if (atomic_read(&kgdb_cpu_doing_single_step) == - raw_smp_processor_id()) { + if (atomic_read(&kgdb_cpu_doing_single_step) != -1) { if (user_mode(regs)) return single_step_cont(regs, args); break; @@ -539,7 +605,42 @@ static struct notifier_block kgdb_notifier = { */ int kgdb_arch_init(void) { - return register_die_notifier(&kgdb_notifier); + int i, cpu; + int ret; + struct perf_event_attr attr; + struct perf_event **pevent; + + ret = register_die_notifier(&kgdb_notifier); + if (ret != 0) + return ret; + /* + * Pre-allocate the hw breakpoint structions in the non-atomic + * portion of kgdb because this operation requires mutexs to + * complete. + */ + attr.bp_addr = (unsigned long)kgdb_arch_init; + attr.type = PERF_TYPE_BREAKPOINT; + attr.bp_len = HW_BREAKPOINT_LEN_1; + attr.bp_type = HW_BREAKPOINT_W; + attr.disabled = 1; + for (i = 0; i < 4; i++) { + breakinfo[i].pev = register_wide_hw_breakpoint(&attr, NULL); + if (IS_ERR(breakinfo[i].pev)) { + printk(KERN_ERR "kgdb: Could not allocate hw breakpoints\n"); + breakinfo[i].pev = NULL; + kgdb_arch_exit(); + return -1; + } + for_each_online_cpu(cpu) { + pevent = per_cpu_ptr(breakinfo[i].pev, cpu); + pevent[0]->hw.sample_period = 1; + if (pevent[0]->destroy != NULL) { + pevent[0]->destroy = NULL; + release_bp_slot(*pevent); + } + } + } + return ret; } /** @@ -550,6 +651,13 @@ int kgdb_arch_init(void) */ void kgdb_arch_exit(void) { + int i; + for (i = 0; i < 4; i++) { + if (breakinfo[i].pev) { + unregister_wide_hw_breakpoint(breakinfo[i].pev); + breakinfo[i].pev = NULL; + } + } unregister_die_notifier(&kgdb_notifier); } diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 37542b67c57e..e1af7c055c7d 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -36,9 +36,6 @@ MODULE_LICENSE("GPL v2"); #define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000 #define UCODE_UCODE_TYPE 0x00000001 -const struct firmware *firmware; -static int supported_cpu; - struct equiv_cpu_entry { u32 installed_cpu; u32 fixed_errata_mask; @@ -77,12 +74,15 @@ static struct equiv_cpu_entry *equiv_cpu_table; static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig) { + struct cpuinfo_x86 *c = &cpu_data(cpu); u32 dummy; - if (!supported_cpu) - return -1; - memset(csig, 0, sizeof(*csig)); + if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) { + pr_warning("microcode: CPU%d: AMD CPU family 0x%x not " + "supported\n", cpu, c->x86); + return -1; + } rdmsr(MSR_AMD64_PATCH_LEVEL, csig->rev, dummy); pr_info("CPU%d: patch_level=0x%x\n", cpu, csig->rev); return 0; @@ -294,10 +294,14 @@ generic_load_microcode(int cpu, const u8 *data, size_t size) static enum ucode_state request_microcode_fw(int cpu, struct device *device) { + const char *fw_name = "amd-ucode/microcode_amd.bin"; + const struct firmware *firmware; enum ucode_state ret; - if (firmware == NULL) + if (request_firmware(&firmware, fw_name, device)) { + printk(KERN_ERR "microcode: failed to load file %s\n", fw_name); return UCODE_NFOUND; + } if (*(u32 *)firmware->data != UCODE_MAGIC) { pr_err("invalid UCODE_MAGIC (0x%08x)\n", @@ -307,6 +311,8 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device) ret = generic_load_microcode(cpu, firmware->data, firmware->size); + release_firmware(firmware); + return ret; } @@ -325,31 +331,7 @@ static void microcode_fini_cpu_amd(int cpu) uci->mc = NULL; } -void init_microcode_amd(struct device *device) -{ - const char *fw_name = "amd-ucode/microcode_amd.bin"; - struct cpuinfo_x86 *c = &boot_cpu_data; - - WARN_ON(c->x86_vendor != X86_VENDOR_AMD); - - if (c->x86 < 0x10) { - pr_warning("AMD CPU family 0x%x not supported\n", c->x86); - return; - } - supported_cpu = 1; - - if (request_firmware(&firmware, fw_name, device)) - pr_err("failed to load file %s\n", fw_name); -} - -void fini_microcode_amd(void) -{ - release_firmware(firmware); -} - static struct microcode_ops microcode_amd_ops = { - .init = init_microcode_amd, - .fini = fini_microcode_amd, .request_microcode_user = request_microcode_user, .request_microcode_fw = request_microcode_fw, .collect_cpu_info = collect_cpu_info_amd, diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index 0c8632433090..cceb5bc3c3c2 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -521,9 +521,6 @@ static int __init microcode_init(void) return PTR_ERR(microcode_pdev); } - if (microcode_ops->init) - microcode_ops->init(µcode_pdev->dev); - get_online_cpus(); mutex_lock(µcode_mutex); @@ -566,9 +563,6 @@ static void __exit microcode_exit(void) platform_device_unregister(microcode_pdev); - if (microcode_ops->fini) - microcode_ops->fini(); - microcode_ops = NULL; pr_info("Microcode Update Driver: v" MICROCODE_VERSION " removed.\n"); diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 40b54ceb68b5..a2c1edd2d3ac 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -359,13 +359,6 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early) x86_init.mpparse.mpc_record(1); } -#ifdef CONFIG_X86_BIGSMP - generic_bigsmp_probe(); -#endif - - if (apic->setup_apic_routing) - apic->setup_apic_routing(); - if (!num_processors) printk(KERN_ERR "MPTABLE: no processors registered!\n"); return num_processors; diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index 4bd93c9b2b27..206735ac8cbd 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -285,7 +285,7 @@ static void __exit msr_exit(void) for_each_online_cpu(cpu) msr_device_destroy(cpu); class_destroy(msr_class); - unregister_chrdev(MSR_MAJOR, "cpu/msr"); + __unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr"); unregister_hotcpu_notifier(&msr_class_cpu_notifier); } diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 02c3ee013ccd..c9b3522b6b46 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -115,18 +115,6 @@ void flush_thread(void) { struct task_struct *tsk = current; -#ifdef CONFIG_X86_64 - if (test_tsk_thread_flag(tsk, TIF_ABI_PENDING)) { - clear_tsk_thread_flag(tsk, TIF_ABI_PENDING); - if (test_tsk_thread_flag(tsk, TIF_IA32)) { - clear_tsk_thread_flag(tsk, TIF_IA32); - } else { - set_tsk_thread_flag(tsk, TIF_IA32); - current_thread_info()->status |= TS_COMPAT; - } - } -#endif - flush_ptrace_hw_breakpoint(tsk); memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array)); /* diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index f9e033150cdf..126f0b493d04 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -521,6 +521,18 @@ void set_personality_64bit(void) current->personality &= ~READ_IMPLIES_EXEC; } +void set_personality_ia32(void) +{ + /* inherit personality from parent */ + + /* Make sure to be in 32bit mode */ + set_thread_flag(TIF_IA32); + current->personality |= force_personality32; + + /* Prepare the first "return" to user space */ + current_thread_info()->status |= TS_COMPAT; +} + unsigned long get_wchan(struct task_struct *p) { unsigned long stack; diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index 73554a3aae8c..d03146f71b2f 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -678,7 +678,7 @@ static unsigned long ptrace_get_debugreg(struct task_struct *tsk, int n) } else if (n == 6) { val = thread->debugreg6; } else if (n == 7) { - val = ptrace_get_dr7(thread->ptrace_bps); + val = thread->ptrace_dr7; } return val; } @@ -754,8 +754,11 @@ int ptrace_set_debugreg(struct task_struct *tsk, int n, unsigned long val) return rc; } /* All that's left is DR7 */ - if (n == 7) + if (n == 7) { rc = ptrace_write_dr7(tsk, val); + if (!rc) + thread->ptrace_dr7 = val; + } ret_path: return rc; diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c index 18093d7498f0..12e9feaa2f7a 100644 --- a/arch/x86/kernel/quirks.c +++ b/arch/x86/kernel/quirks.c @@ -491,6 +491,19 @@ void force_hpet_resume(void) break; } } + +/* + * HPET MSI on some boards (ATI SB700/SB800) has side effect on + * floppy DMA. Disable HPET MSI on such platforms. + */ +static void force_disable_hpet_msi(struct pci_dev *unused) +{ + hpet_msi_disable = 1; +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, + force_disable_hpet_msi); + #endif #if defined(CONFIG_PCI) && defined(CONFIG_NUMA) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 1545bc0c9845..704bddcdf64d 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -203,6 +203,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "0T656F"), }, }, + { /* Handle problems with rebooting on Dell OptiPlex 760 with 0G919G*/ + .callback = set_bios_reboot, + .ident = "Dell OptiPlex 760", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 760"), + DMI_MATCH(DMI_BOARD_NAME, "0G919G"), + }, + }, { /* Handle problems with rebooting on Dell 2400's */ .callback = set_bios_reboot, .ident = "Dell PowerEdge 2400", diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index f7b8b9894b22..5d9e40c58628 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -642,19 +642,27 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = { DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"), }, }, - { /* - * AMI BIOS with low memory corruption was found on Intel DG45ID board. - * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will + * AMI BIOS with low memory corruption was found on Intel DG45ID and + * DG45FC boards. + * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will * match only DMI_BOARD_NAME and see if there is more bad products * with this vendor. */ + { .callback = dmi_low_memory_corruption, .ident = "AMI BIOS", .matches = { DMI_MATCH(DMI_BOARD_NAME, "DG45ID"), }, }, + { + .callback = dmi_low_memory_corruption, + .ident = "AMI BIOS", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "DG45FC"), + }, + }, #endif {} }; diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 678d0b8c26f3..b4e870cbdc60 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1083,9 +1083,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) set_cpu_sibling_map(0); enable_IR_x2apic(); -#ifdef CONFIG_X86_64 default_setup_apic_routing(); -#endif if (smp_sanity_check(max_cpus) < 0) { printk(KERN_INFO "SMP disabled\n"); diff --git a/arch/x86/kernel/uv_time.c b/arch/x86/kernel/uv_time.c index 3c84aa001c11..2b75ef638dbc 100644 --- a/arch/x86/kernel/uv_time.c +++ b/arch/x86/kernel/uv_time.c @@ -282,10 +282,21 @@ static int uv_rtc_unset_timer(int cpu, int force) /* * Read the RTC. + * + * Starting with HUB rev 2.0, the UV RTC register is replicated across all + * cachelines of it's own page. This allows faster simultaneous reads + * from a given socket. */ static cycle_t uv_read_rtc(struct clocksource *cs) { - return (cycle_t)uv_read_local_mmr(UVH_RTC); + unsigned long offset; + + if (uv_get_min_hub_revision_id() == 1) + offset = 0; + else + offset = (uv_blade_processor_id() * L1_CACHE_BYTES) % PAGE_SIZE; + + return (cycle_t)uv_read_local_mmr(UVH_RTC | offset); } /* diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 296aba49472a..15578f180e59 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -467,6 +467,9 @@ static int pit_ioport_read(struct kvm_io_device *this, return -EOPNOTSUPP; addr &= KVM_PIT_CHANNEL_MASK; + if (addr == 3) + return 0; + s = &pit_state->channels[addr]; mutex_lock(&pit_state->lock); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1ddcad452add..a1e1bc9d412d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -670,7 +670,7 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock) { static int version; struct pvclock_wall_clock wc; - struct timespec now, sys, boot; + struct timespec boot; if (!wall_clock) return; @@ -685,9 +685,7 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock) * wall clock specified here. guest system time equals host * system time for us, thus we must fill in host boot time here. */ - now = current_kernel_time(); - ktime_get_ts(&sys); - boot = ns_to_timespec(timespec_to_ns(&now) - timespec_to_ns(&sys)); + getboottime(&boot); wc.sec = boot.tv_sec; wc.nsec = boot.tv_nsec; @@ -762,6 +760,7 @@ static void kvm_write_guest_time(struct kvm_vcpu *v) local_irq_save(flags); kvm_get_msr(v, MSR_IA32_TSC, &vcpu->hv_clock.tsc_timestamp); ktime_get_ts(&ts); + monotonic_to_bootbased(&ts); local_irq_restore(flags); /* With all the info we got, fill in the values */ diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c index 71da1bca13cb..738e6593799d 100644 --- a/arch/x86/mm/gup.c +++ b/arch/x86/mm/gup.c @@ -18,7 +18,7 @@ static inline pte_t gup_get_pte(pte_t *ptep) #else /* * With get_user_pages_fast, we walk down the pagetables without taking - * any locks. For this we would like to load the pointers atoimcally, + * any locks. For this we would like to load the pointers atomically, * but that is not possible (without expensive cmpxchg8b) on PAE. What * we do have is the guarantee that a pte will only either go from not * present to present, or present to not present or both -- it will not diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 5198b9bb34ef..69ddfbd91135 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -49,6 +49,7 @@ #include <asm/numa.h> #include <asm/cacheflush.h> #include <asm/init.h> +#include <linux/bootmem.h> static unsigned long dma_reserve __initdata; @@ -616,6 +617,21 @@ void __init paging_init(void) */ #ifdef CONFIG_MEMORY_HOTPLUG /* + * After memory hotplug the variables max_pfn, max_low_pfn and high_memory need + * updating. + */ +static void update_end_of_memory_vars(u64 start, u64 size) +{ + unsigned long end_pfn = PFN_UP(start + size); + + if (end_pfn > max_pfn) { + max_pfn = end_pfn; + max_low_pfn = end_pfn; + high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; + } +} + +/* * Memory is added always to NORMAL zone. This means you will never get * additional DMA/DMA32 memory. */ @@ -634,6 +650,9 @@ int arch_add_memory(int nid, u64 start, u64 size) ret = __add_pages(nid, zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); + /* update max_pfn, max_low_pfn and high_memory */ + update_end_of_memory_vars(start, size); + return ret; } EXPORT_SYMBOL_GPL(arch_add_memory); diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index a27124185fc1..28c68762648f 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -229,9 +229,11 @@ update_nodes_add(int node, unsigned long start, unsigned long end) printk(KERN_ERR "SRAT: Hotplug zone not continuous. Partly ignored\n"); } - if (changed) + if (changed) { + node_set(node, cpu_nodes_parsed); printk(KERN_INFO "SRAT: hot plug zone found %Lx - %Lx\n", nd->start, nd->end); + } } /* Callback for parsing of the Proximity Domain <-> Memory Area mappings */ diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index cb88b1a0bd5f..3347f696edc7 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -222,7 +222,7 @@ static void nmi_cpu_switch(void *dummy) /* move to next set */ si += model->num_counters; - if ((si > model->num_virt_counters) || (counter_config[si].count == 0)) + if ((si >= model->num_virt_counters) || (counter_config[si].count == 0)) per_cpu(switch_index, cpu) = 0; else per_cpu(switch_index, cpu) = si; @@ -598,6 +598,7 @@ static int __init ppro_init(char **cpu_type) case 15: case 23: *cpu_type = "i386/core_2"; break; + case 0x2e: case 26: spec = &op_arch_perfmon_spec; *cpu_type = "i386/core_i7"; diff --git a/arch/x86/pci/Makefile b/arch/x86/pci/Makefile index 564b008a51c7..39fba37f702f 100644 --- a/arch/x86/pci/Makefile +++ b/arch/x86/pci/Makefile @@ -15,7 +15,7 @@ obj-$(CONFIG_X86_NUMAQ) += numaq_32.o obj-y += common.o early.o obj-y += amd_bus.o -obj-$(CONFIG_X86_64) += bus_numa.o intel_bus.o +obj-$(CONFIG_X86_64) += bus_numa.o ifeq ($(CONFIG_PCI_DEBUG),y) EXTRA_CFLAGS += -DDEBUG diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c deleted file mode 100644 index f81a2fa8fe25..000000000000 --- a/arch/x86/pci/intel_bus.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * to read io range from IOH pci conf, need to do it after mmconfig is there - */ - -#include <linux/delay.h> -#include <linux/dmi.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <asm/pci_x86.h> - -#include "bus_numa.h" - -static inline void print_ioh_resources(struct pci_root_info *info) -{ - int res_num; - int busnum; - int i; - - printk(KERN_DEBUG "IOH bus: [%02x, %02x]\n", - info->bus_min, info->bus_max); - res_num = info->res_num; - busnum = info->bus_min; - for (i = 0; i < res_num; i++) { - struct resource *res; - - res = &info->res[i]; - printk(KERN_DEBUG "IOH bus: %02x index %x %s: [%llx, %llx]\n", - busnum, i, - (res->flags & IORESOURCE_IO) ? "io port" : - "mmio", - res->start, res->end); - } -} - -#define IOH_LIO 0x108 -#define IOH_LMMIOL 0x10c -#define IOH_LMMIOH 0x110 -#define IOH_LMMIOH_BASEU 0x114 -#define IOH_LMMIOH_LIMITU 0x118 -#define IOH_LCFGBUS 0x11c - -static void __devinit pci_root_bus_res(struct pci_dev *dev) -{ - u16 word; - u32 dword; - struct pci_root_info *info; - u16 io_base, io_end; - u32 mmiol_base, mmiol_end; - u64 mmioh_base, mmioh_end; - int bus_base, bus_end; - - /* some sys doesn't get mmconf enabled */ - if (dev->cfg_size < 0x120) - return; - - if (pci_root_num >= PCI_ROOT_NR) { - printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n"); - return; - } - - info = &pci_root_info[pci_root_num]; - pci_root_num++; - - pci_read_config_word(dev, IOH_LCFGBUS, &word); - bus_base = (word & 0xff); - bus_end = (word & 0xff00) >> 8; - sprintf(info->name, "PCI Bus #%02x", bus_base); - info->bus_min = bus_base; - info->bus_max = bus_end; - - pci_read_config_word(dev, IOH_LIO, &word); - io_base = (word & 0xf0) << (12 - 4); - io_end = (word & 0xf000) | 0xfff; - update_res(info, io_base, io_end, IORESOURCE_IO, 0); - - pci_read_config_dword(dev, IOH_LMMIOL, &dword); - mmiol_base = (dword & 0xff00) << (24 - 8); - mmiol_end = (dword & 0xff000000) | 0xffffff; - update_res(info, mmiol_base, mmiol_end, IORESOURCE_MEM, 0); - - pci_read_config_dword(dev, IOH_LMMIOH, &dword); - mmioh_base = ((u64)(dword & 0xfc00)) << (26 - 10); - mmioh_end = ((u64)(dword & 0xfc000000) | 0x3ffffff); - pci_read_config_dword(dev, IOH_LMMIOH_BASEU, &dword); - mmioh_base |= ((u64)(dword & 0x7ffff)) << 32; - pci_read_config_dword(dev, IOH_LMMIOH_LIMITU, &dword); - mmioh_end |= ((u64)(dword & 0x7ffff)) << 32; - update_res(info, mmioh_base, mmioh_end, IORESOURCE_MEM, 0); - - print_ioh_resources(info); -} - -/* intel IOH */ -DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, pci_root_bus_res); |