diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_nb.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/aperture_64.c | 44 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/hw_nmi.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce-inject.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_p4.c | 28 | ||||
| -rw-r--r-- | arch/x86/kernel/dumpstack.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 36 | ||||
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/reboot.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 102 | ||||
| -rw-r--r-- | arch/x86/kernel/tsc.c | 2 |
15 files changed, 129 insertions, 129 deletions
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index affacb5..0a99f71 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -20,6 +20,13 @@ struct pci_device_id amd_nb_misc_ids[] = { }; EXPORT_SYMBOL(amd_nb_misc_ids); +const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[] __initconst = { + { 0x00, 0x18, 0x20 }, + { 0xff, 0x00, 0x20 }, + { 0xfe, 0x00, 0x20 }, + { } +}; + struct amd_northbridge_info amd_northbridges; EXPORT_SYMBOL(amd_northbridges); diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index dcd7c83..5955a78 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -39,18 +39,6 @@ int fallback_aper_force __initdata; int fix_aperture __initdata = 1; -struct bus_dev_range { - int bus; - int dev_base; - int dev_limit; -}; - -static struct bus_dev_range bus_dev_ranges[] __initdata = { - { 0x00, 0x18, 0x20}, - { 0xff, 0x00, 0x20}, - { 0xfe, 0x00, 0x20} -}; - static struct resource gart_resource = { .name = "GART", .flags = IORESOURCE_MEM, @@ -294,13 +282,13 @@ void __init early_gart_iommu_check(void) search_agp_bridge(&agp_aper_order, &valid_agp); fix = 0; - for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { + for (i = 0; amd_nb_bus_dev_ranges[i].dev_limit; i++) { int bus; int dev_base, dev_limit; - bus = bus_dev_ranges[i].bus; - dev_base = bus_dev_ranges[i].dev_base; - dev_limit = bus_dev_ranges[i].dev_limit; + bus = amd_nb_bus_dev_ranges[i].bus; + dev_base = amd_nb_bus_dev_ranges[i].dev_base; + dev_limit = amd_nb_bus_dev_ranges[i].dev_limit; for (slot = dev_base; slot < dev_limit; slot++) { if (!early_is_amd_nb(read_pci_config(bus, slot, 3, 0x00))) @@ -349,13 +337,13 @@ void __init early_gart_iommu_check(void) return; /* disable them all at first */ - for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { + for (i = 0; i < amd_nb_bus_dev_ranges[i].dev_limit; i++) { int bus; int dev_base, dev_limit; - bus = bus_dev_ranges[i].bus; - dev_base = bus_dev_ranges[i].dev_base; - dev_limit = bus_dev_ranges[i].dev_limit; + bus = amd_nb_bus_dev_ranges[i].bus; + dev_base = amd_nb_bus_dev_ranges[i].dev_base; + dev_limit = amd_nb_bus_dev_ranges[i].dev_limit; for (slot = dev_base; slot < dev_limit; slot++) { if (!early_is_amd_nb(read_pci_config(bus, slot, 3, 0x00))) @@ -390,14 +378,14 @@ int __init gart_iommu_hole_init(void) fix = 0; node = 0; - for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { + for (i = 0; i < amd_nb_bus_dev_ranges[i].dev_limit; i++) { int bus; int dev_base, dev_limit; u32 ctl; - bus = bus_dev_ranges[i].bus; - dev_base = bus_dev_ranges[i].dev_base; - dev_limit = bus_dev_ranges[i].dev_limit; + bus = amd_nb_bus_dev_ranges[i].bus; + dev_base = amd_nb_bus_dev_ranges[i].dev_base; + dev_limit = amd_nb_bus_dev_ranges[i].dev_limit; for (slot = dev_base; slot < dev_limit; slot++) { if (!early_is_amd_nb(read_pci_config(bus, slot, 3, 0x00))) @@ -505,7 +493,7 @@ out: } /* Fix up the north bridges */ - for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) { + for (i = 0; i < amd_nb_bus_dev_ranges[i].dev_limit; i++) { int bus, dev_base, dev_limit; /* @@ -514,9 +502,9 @@ out: */ u32 ctl = DISTLBWALKPRB | aper_order << 1; - bus = bus_dev_ranges[i].bus; - dev_base = bus_dev_ranges[i].dev_base; - dev_limit = bus_dev_ranges[i].dev_limit; + bus = amd_nb_bus_dev_ranges[i].bus; + dev_base = amd_nb_bus_dev_ranges[i].dev_base; + dev_limit = amd_nb_bus_dev_ranges[i].dev_limit; for (slot = dev_base; slot < dev_limit; slot++) { if (!early_is_amd_nb(read_pci_config(bus, slot, 3, 0x00))) continue; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index a51345b..06c196d 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -684,7 +684,7 @@ static int __init calibrate_APIC_clock(void) lapic_clockevent.mult = div_sc(delta, TICK_NSEC * LAPIC_CAL_LOOPS, lapic_clockevent.shift); lapic_clockevent.max_delta_ns = - clockevent_delta2ns(0x7FFFFF, &lapic_clockevent); + clockevent_delta2ns(0x7FFFFFFF, &lapic_clockevent); lapic_clockevent.min_delta_ns = clockevent_delta2ns(0xF, &lapic_clockevent); diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c index 72ec29e..79fd43c 100644 --- a/arch/x86/kernel/apic/hw_nmi.c +++ b/arch/x86/kernel/apic/hw_nmi.c @@ -68,7 +68,6 @@ arch_trigger_all_cpu_backtrace_handler(struct notifier_block *self, switch (cmd) { case DIE_NMI: - case DIE_NMI_IPI: break; default: @@ -96,7 +95,7 @@ arch_trigger_all_cpu_backtrace_handler(struct notifier_block *self, static __read_mostly struct notifier_block backtrace_notifier = { .notifier_call = arch_trigger_all_cpu_backtrace_handler, .next = NULL, - .priority = 1 + .priority = NMI_LOCAL_LOW_PRIOR, }; static int __init register_trigger_all_cpu_backtrace(void) diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index ecca5f4..bd16b58 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -378,7 +378,7 @@ struct apic __refdata apic_x2apic_uv_x = { static __cpuinit void set_x2apic_extra_bits(int pnode) { - __this_cpu_write(x2apic_extra_bits, (pnode << 6)); + __this_cpu_write(x2apic_extra_bits, pnode << uvh_apicid.s.pnode_shift); } /* @@ -641,7 +641,7 @@ void __cpuinit uv_cpu_init(void) */ int uv_handle_nmi(struct notifier_block *self, unsigned long reason, void *data) { - if (reason != DIE_NMI_IPI) + if (reason != DIE_NMIUNKNOWN) return NOTIFY_OK; if (in_crash_kexec) diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index e7dbde7..a779719 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -25,6 +25,7 @@ #include <linux/gfp.h> #include <asm/mce.h> #include <asm/apic.h> +#include <asm/nmi.h> /* Update fake mce registers on current CPU. */ static void inject_mce(struct mce *m) @@ -83,7 +84,7 @@ static int mce_raise_notify(struct notifier_block *self, struct die_args *args = (struct die_args *)data; int cpu = smp_processor_id(); struct mce *m = &__get_cpu_var(injectm); - if (val != DIE_NMI_IPI || !cpumask_test_cpu(cpu, mce_inject_cpumask)) + if (val != DIE_NMI || !cpumask_test_cpu(cpu, mce_inject_cpumask)) return NOTIFY_DONE; cpumask_clear_cpu(cpu, mce_inject_cpumask); if (m->inject_flags & MCJ_EXCEPTION) @@ -95,7 +96,7 @@ static int mce_raise_notify(struct notifier_block *self, static struct notifier_block mce_raise_nb = { .notifier_call = mce_raise_notify, - .priority = 1000, + .priority = NMI_LOCAL_NORMAL_PRIOR, }; /* Inject mce on current CPU */ diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 0492101..9d977a2 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1267,7 +1267,6 @@ perf_event_nmi_handler(struct notifier_block *self, switch (cmd) { case DIE_NMI: - case DIE_NMI_IPI: break; case DIE_NMIUNKNOWN: this_nmi = percpu_read(irq_stat.__nmi_count); @@ -1317,7 +1316,7 @@ perf_event_nmi_handler(struct notifier_block *self, static __read_mostly struct notifier_block perf_event_nmi_notifier = { .notifier_call = perf_event_nmi_handler, .next = NULL, - .priority = 1 + .priority = NMI_LOCAL_LOW_PRIOR, }; static struct event_constraint unconstrained; diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c index 81400b9..e56b9bf 100644 --- a/arch/x86/kernel/cpu/perf_event_p4.c +++ b/arch/x86/kernel/cpu/perf_event_p4.c @@ -753,19 +753,21 @@ out: static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc) { - int overflow = 0; - u32 low, high; + u64 v; - rdmsr(hwc->config_base + hwc->idx, low, high); - - /* we need to check high bit for unflagged overflows */ - if ((low & P4_CCCR_OVF) || !(high & (1 << 31))) { - overflow = 1; - (void)checking_wrmsrl(hwc->config_base + hwc->idx, - ((u64)low) & ~P4_CCCR_OVF); + /* an official way for overflow indication */ + rdmsrl(hwc->config_base + hwc->idx, v); + if (v & P4_CCCR_OVF) { + wrmsrl(hwc->config_base + hwc->idx, v & ~P4_CCCR_OVF); + return 1; } - return overflow; + /* it might be unflagged overflow */ + rdmsrl(hwc->event_base + hwc->idx, v); + if (!(v & ARCH_P4_CNTRVAL_MASK)) + return 1; + + return 0; } static void p4_pmu_disable_pebs(void) @@ -1152,9 +1154,9 @@ static __initconst const struct x86_pmu p4_pmu = { */ .num_counters = ARCH_P4_MAX_CCCR, .apic = 1, - .cntval_bits = 40, - .cntval_mask = (1ULL << 40) - 1, - .max_period = (1ULL << 39) - 1, + .cntval_bits = ARCH_P4_CNTRVAL_BITS, + .cntval_mask = ARCH_P4_CNTRVAL_MASK, + .max_period = (1ULL << (ARCH_P4_CNTRVAL_BITS - 1)) - 1, .hw_config = p4_hw_config, .schedule_events = p4_pmu_schedule_events, /* diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index 8474c99..d6fb146 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -197,14 +197,8 @@ void show_stack(struct task_struct *task, unsigned long *sp) */ void dump_stack(void) { - unsigned long bp = 0; unsigned long stack; -#ifdef CONFIG_FRAME_POINTER - if (!bp) - get_bp(bp); -#endif - printk("Pid: %d, comm: %.20s %s %s %.*s\n", current->pid, current->comm, print_tainted(), init_utsname()->release, diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index e3ba417..d3b895f 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -299,17 +299,21 @@ ENDPROC(native_usergs_sysret64) ENTRY(save_args) XCPT_FRAME cld - movq_cfi rdi, RDI+16-ARGOFFSET - movq_cfi rsi, RSI+16-ARGOFFSET - movq_cfi rdx, RDX+16-ARGOFFSET - movq_cfi rcx, RCX+16-ARGOFFSET - movq_cfi rax, RAX+16-ARGOFFSET - movq_cfi r8, R8+16-ARGOFFSET - movq_cfi r9, R9+16-ARGOFFSET - movq_cfi r10, R10+16-ARGOFFSET - movq_cfi r11, R11+16-ARGOFFSET - - leaq -ARGOFFSET+16(%rsp),%rdi /* arg1 for handler */ + /* + * start from rbp in pt_regs and jump over + * return address. + */ + movq_cfi rdi, RDI+8-RBP + movq_cfi rsi, RSI+8-RBP + movq_cfi rdx, RDX+8-RBP + movq_cfi rcx, RCX+8-RBP + movq_cfi rax, RAX+8-RBP + movq_cfi r8, R8+8-RBP + movq_cfi r9, R9+8-RBP + movq_cfi r10, R10+8-RBP + movq_cfi r11, R11+8-RBP + + leaq -RBP+8(%rsp),%rdi /* arg1 for handler */ movq_cfi rbp, 8 /* push %rbp */ leaq 8(%rsp), %rbp /* mov %rsp, %ebp */ testl $3, CS(%rdi) @@ -782,8 +786,9 @@ END(interrupt) /* 0(%rsp): ~(interrupt number) */ .macro interrupt func - subq $ORIG_RAX-ARGOFFSET+8, %rsp - CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+8 + /* reserve pt_regs for scratch regs and rbp */ + subq $ORIG_RAX-RBP, %rsp + CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP call save_args PARTIAL_FRAME 0 call \func @@ -808,9 +813,14 @@ ret_from_intr: TRACE_IRQS_OFF decl PER_CPU_VAR(irq_count) leaveq + CFI_RESTORE rbp CFI_DEF_CFA_REGISTER rsp CFI_ADJUST_CFA_OFFSET -8 + + /* we did not save rbx, restore only from ARGOFFSET */ + addq $8, %rsp + CFI_ADJUST_CFA_OFFSET -8 exit_intr: GET_THREAD_INFO(%rcx) testl $3,CS-ARGOFFSET(%rsp) diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index cd21b65..a413000 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -48,6 +48,7 @@ #include <asm/apicdef.h> #include <asm/system.h> #include <asm/apic.h> +#include <asm/nmi.h> struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = { @@ -525,10 +526,6 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd) } return NOTIFY_DONE; - case DIE_NMI_IPI: - /* Just ignore, we will handle the roundup on DIE_NMI. */ - return NOTIFY_DONE; - case DIE_NMIUNKNOWN: if (was_in_debug_nmi[raw_smp_processor_id()]) { was_in_debug_nmi[raw_smp_processor_id()] = 0; @@ -606,7 +603,7 @@ static struct notifier_block kgdb_notifier = { /* * Lowest-prio notifier priority, we want to be notified last: */ - .priority = -INT_MAX, + .priority = NMI_LOCAL_LOW_PRIOR, }; /** diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index c495aa8d..fc7aae1 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -18,6 +18,7 @@ #include <asm/pci_x86.h> #include <asm/virtext.h> #include <asm/cpu.h> +#include <asm/nmi.h> #ifdef CONFIG_X86_32 # include <linux/ctype.h> @@ -747,7 +748,7 @@ static int crash_nmi_callback(struct notifier_block *self, { int cpu; - if (val != DIE_NMI_IPI) + if (val != DIE_NMI) return NOTIFY_OK; cpu = raw_smp_processor_id(); @@ -778,6 +779,8 @@ static void smp_send_nmi_allbutself(void) static struct notifier_block crash_nmi_nb = { .notifier_call = crash_nmi_callback, + /* we want to be the first one called */ + .priority = NMI_LOCAL_HIGH_PRIOR+1, }; /* Halt all other CPUs, calling the specified function on each of them diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index c7149c9..763df77 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -97,12 +97,12 @@ static DEFINE_PER_CPU(struct task_struct *, idle_thread_array); */ static DEFINE_MUTEX(x86_cpu_hotplug_driver_mutex); -void cpu_hotplug_driver_lock() +void cpu_hotplug_driver_lock(void) { mutex_lock(&x86_cpu_hotplug_driver_mutex); } -void cpu_hotplug_driver_unlock() +void cpu_hotplug_driver_unlock(void) { mutex_unlock(&x86_cpu_hotplug_driver_mutex); } diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index c76aaca..b9b6716 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -84,6 +84,11 @@ EXPORT_SYMBOL_GPL(used_vectors); static int ignore_nmis; int unknown_nmi_panic; +/* + * Prevent NMI reason port (0x61) being accessed simultaneously, can + * only be used in NMI handler. + */ +static DEFINE_RAW_SPINLOCK(nmi_reason_lock); static inline void conditional_sti(struct pt_regs *regs) { @@ -310,15 +315,15 @@ static int __init setup_unknown_nmi_panic(char *str) __setup("unknown_nmi_panic", setup_unknown_nmi_panic); static notrace __kprobes void -mem_parity_error(unsigned char reason, struct pt_regs *regs) +pci_serr_error(unsigned char reason, struct pt_regs *regs) { - printk(KERN_EMERG - "Uhhuh. NMI received for unknown reason %02x on CPU %d.\n", - reason, smp_processor_id()); - - printk(KERN_EMERG - "You have some hardware problem, likely on the PCI bus.\n"); + pr_emerg("NMI: PCI system error (SERR) for reason %02x on CPU %d.\n", + reason, smp_processor_id()); + /* + * On some machines, PCI SERR line is used to report memory + * errors. EDAC makes use of it. + */ #if defined(CONFIG_EDAC) if (edac_handler_set()) { edac_atomic_assert_error(); @@ -329,11 +334,11 @@ mem_parity_error(unsigned char reason, struct pt_regs *regs) if (panic_on_unrecovered_nmi) panic("NMI: Not continuing"); - printk(KERN_EMERG "Dazed and confused, but trying to continue\n"); + pr_emerg("Dazed and confused, but trying to continue\n"); - /* Clear and disable the memory parity error line. */ - reason = (reason & 0xf) | 4; - outb(reason, 0x61); + /* Clear and disable the PCI SERR error line. */ + reason = (reason & NMI_REASON_CLEAR_MASK) | NMI_REASON_CLEAR_SERR; + outb(reason, NMI_REASON_PORT); } static notrace __kprobes void @@ -341,15 +346,17 @@ io_check_error(unsigned char reason, struct pt_regs *regs) { unsigned long i; - printk(KERN_EMERG "NMI: IOCK error (debug interrupt?)\n"); + pr_emerg( + "NMI: IOCK error (debug interrupt?) for reason %02x on CPU %d.\n", + reason, smp_processor_id()); show_registers(regs); if (panic_on_io_nmi) panic("NMI IOCK error: Not continuing"); /* Re-enable the IOCK line, wait for a few seconds */ - reason = (reason & 0xf) | 8; - outb(reason, 0x61); + reason = (reason & NMI_REASON_CLEAR_MASK) | NMI_REASON_CLEAR_IOCHK; + outb(reason, NMI_REASON_PORT); i = 20000; while (--i) { @@ -357,8 +364,8 @@ io_check_error(unsigned char reason, struct pt_regs *regs) udelay(100); } - reason &= ~8; - outb(reason, 0x61); + reason &= ~NMI_REASON_CLEAR_IOCHK; + outb(reason, NMI_REASON_PORT); } static notrace __kprobes void @@ -377,57 +384,50 @@ unknown_nmi_error(unsigned char reason, struct pt_regs *regs) return; } #endif - printk(KERN_EMERG - "Uhhuh. NMI received for unknown reason %02x on CPU %d.\n", - reason, smp_processor_id()); + pr_emerg("Uhhuh. NMI received for unknown reason %02x on CPU %d.\n", + reason, smp_processor_id()); - printk(KERN_EMERG "Do you have a strange power saving mode enabled?\n"); + pr_emerg("Do you have a strange power saving mode enabled?\n"); if (unknown_nmi_panic || panic_on_unrecovered_nmi) panic("NMI: Not continuing"); - printk(KERN_EMERG "Dazed and confused, but trying to continue\n"); + pr_emerg("Dazed and confused, but trying to continue\n"); } static notrace __kprobes void default_do_nmi(struct pt_regs *regs) { unsigned char reason = 0; - int cpu; - cpu = smp_processor_id(); - - /* Only the BSP gets external NMIs from the system. */ - if (!cpu) - reason = get_nmi_reason(); + /* + * CPU-specific NMI must be processed before non-CPU-specific + * NMI, otherwise we may lose it, because the CPU-specific + * NMI can not be detected/processed on other CPUs. + */ + if (notify_die(DIE_NMI, "nmi", regs, 0, 2, SIGINT) == NOTIFY_STOP) + return; - if (!(reason & 0xc0)) { - if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 2, SIGINT) - == NOTIFY_STOP) - return; + /* Non-CPU-specific NMI: NMI sources can be processed on any CPU */ + raw_spin_lock(&nmi_reason_lock); + reason = get_nmi_reason(); -#ifdef CONFIG_X86_LOCAL_APIC - if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) - == NOTIFY_STOP) - return; + if (reason & NMI_REASON_MASK) { + if (reason & NMI_REASON_SERR) + pci_serr_error(reason, regs); + else if (reason & NMI_REASON_IOCHK) + io_check_error(reason, regs); +#ifdef CONFIG_X86_32 + /* + * Reassert NMI in case it became active + * meanwhile as it's edge-triggered: + */ + reassert_nmi(); #endif - unknown_nmi_error(reason, regs); - + raw_spin_unlock(&nmi_reason_lock); return; } - if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP) - return; + raw_spin_unlock(&nmi_reason_lock); - /* AK: following checks seem to be broken on modern chipsets. FIXME */ - if (reason & 0x80) - mem_parity_error(reason, regs); - if (reason & 0x40) - io_check_error(reason, regs); -#ifdef CONFIG_X86_32 - /* - * Reassert NMI in case it became active meanwhile - * as it's edge-triggered: - */ - reassert_nmi(); -#endif + unknown_nmi_error(reason, regs); } dotraplinkage notrace __kprobes void diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 03d2ea8..823f79a 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -965,7 +965,7 @@ out: static int __init init_tsc_clocksource(void) { - if (!cpu_has_tsc || tsc_disabled > 0) + if (!cpu_has_tsc || tsc_disabled > 0 || !tsc_khz) return 0; if (tsc_clocksource_reliable) |
