Messages in this thread Patch in this message | | | From | Eduardo Habkost <> | Subject | [PATCH 8/8] x86: Disable IRQs before doing anything on nmi_shootdown_cpus() | Date | Wed, 12 Nov 2008 11:34:44 -0200 |
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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: Eduardo Habkost <ehabkost@redhat.com> --- arch/x86/kernel/reboot.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index d0c9c77..c495687 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -582,6 +582,7 @@ 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(); -- 1.5.5.GIT
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