diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/apic/hw_nmi.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce-inject.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/reboot.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 19 |
6 files changed, 12 insertions, 19 deletions
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c index 8bc49f1ac7b..79fd43ca6f9 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: diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 59546c1219f..a7797197956 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) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 5e14b5e5fb8..c71bae43a51 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1268,7 +1268,6 @@ 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); diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index d43c84183d8..a4130005028 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -526,10 +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; diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 9c1c83e4a74..fc7aae1e2bc 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(); diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index c7fd1cea037..23f6ac05d04 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -394,6 +394,14 @@ static notrace __kprobes void default_do_nmi(struct pt_regs *regs) unsigned char reason = 0; int cpu; + /* + * 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; + cpu = smp_processor_id(); /* Only the BSP gets external NMIs from the system. */ @@ -401,21 +409,10 @@ static notrace __kprobes void default_do_nmi(struct pt_regs *regs) reason = get_nmi_reason(); if (!(reason & NMI_REASON_MASK)) { - if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 2, SIGINT) - == NOTIFY_STOP) - return; - -#ifdef CONFIG_X86_LOCAL_APIC - if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) - == NOTIFY_STOP) - return; -#endif unknown_nmi_error(reason, regs); return; } - if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP) - return; /* AK: following checks seem to be broken on modern chipsets. FIXME */ if (reason & NMI_REASON_SERR) |