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Commit c415b3dc authored by Eduardo Habkost's avatar Eduardo Habkost Committed by Ingo Molnar
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x86: disable IRQs before doing anything on nmi_shootdown_cpus() 



Impact: make nmi_shootdown_cpus() callable from preemptible context

We need to know on which CPU we are running on, and we don't want to be
preempted while doing this.

Signed-off-by: default avatarEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent bb8dd270

arch/x86/kernel/reboot.c

+1 −0
Original line number Diff line number Diff line
@@ -577,6 +577,7 @@ static struct notifier_block crash_nmi_nb = { 
void nmi_shootdown_cpus(nmi_shootdown_cb callback)

{

	unsigned long msecs;

	local_irq_disable();



	/* Make a note of crashing cpu. Will be used in NMI callback.*/

	crashing_cpu = safe_smp_processor_id();