KVM: Grab pic lock in kvm_pic_clear_isr_ack
Marcelo Tosatti [Thu, 4 Jun 2009 18:08:21 +0000 (15:08 -0300)]
isr_ack is protected by kvm_pic->lock.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

arch/x86/kvm/i8259.c

index 2520922..bf94a45 100644 (file)
@@ -72,8 +72,10 @@ static void pic_clear_isr(struct kvm_kpic_state *s, int irq)
 void kvm_pic_clear_isr_ack(struct kvm *kvm)
 {
        struct kvm_pic *s = pic_irqchip(kvm);
+       pic_lock(s);
        s->pics[0].isr_ack = 0xff;
        s->pics[1].isr_ack = 0xff;
+       pic_unlock(s);
 }
 
 /*