Commit cc1b4680 authored by Davidlohr Bueso's avatar Davidlohr Bueso Committed by Paolo Bonzini

kvm,lapic: Justify use of swait_active()

A comment might serve future readers.
Signed-off-by: default avatarDavidlohr Bueso <dbueso@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b9f67a42
...@@ -1324,6 +1324,10 @@ static void apic_timer_expired(struct kvm_lapic *apic) ...@@ -1324,6 +1324,10 @@ static void apic_timer_expired(struct kvm_lapic *apic)
atomic_inc(&apic->lapic_timer.pending); atomic_inc(&apic->lapic_timer.pending);
kvm_set_pending_timer(vcpu); kvm_set_pending_timer(vcpu);
/*
* For x86, the atomic_inc() is serialized, thus
* using swait_active() is safe.
*/
if (swait_active(q)) if (swait_active(q))
swake_up(q); swake_up(q);
......
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