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: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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bb8dd270
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