KVM: x86: add apic_timer_expired()
Make the code reusable. If the timer was already pending, we shouldn't be waiting in a queue, so wake_up can be skipped, simplifying the path. There is no 'reinject' case => the comment is removed. Current race behaves correctly. Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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