diff options
Diffstat (limited to 'arch/x86/kernel/reboot.c')
| -rw-r--r-- | arch/x86/kernel/reboot.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index dc1dd3f3e67f..964f6b0a3d68 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -921,20 +921,16 @@ void nmi_shootdown_cpus(nmi_shootdown_cb callback) return; /* Make a note of crashing cpu. Will be used in NMI callback. */ - crashing_cpu = safe_smp_processor_id(); + crashing_cpu = smp_processor_id(); shootdown_callback = callback; atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1); - /* Would it be better to replace the trap vector here? */ - if (register_nmi_handler(NMI_LOCAL, crash_nmi_callback, - NMI_FLAG_FIRST, "crash")) - return; /* Return what? */ + /* - * Ensure the new callback function is set before sending - * out the NMI + * Set emergency handler to preempt other handlers. */ - wmb(); + set_emergency_nmi_handler(NMI_LOCAL, crash_nmi_callback); apic_send_IPI_allbutself(NMI_VECTOR); |