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KVM: Grab pic lock in kvm_pic_clear_isr_ack

isr_ack is protected by kvm_pic->lock.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Marcelo Tosatti 16 years ago
parent
238adc7705
commit
9f4cc12765
1 changed files with 2 additions and 0 deletions
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  1. 2 0
      arch/x86/kvm/i8259.c

+ 2 - 0
arch/x86/kvm/i8259.c
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@@ -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)
 
 void kvm_pic_clear_isr_ack(struct kvm *kvm)
 
 {
 
 {
 
 	struct kvm_pic *s = pic_irqchip(kvm);
 
 	struct kvm_pic *s = pic_irqchip(kvm);
 
+	pic_lock(s);
 
 	s->pics[0].isr_ack = 0xff;
 
 	s->pics[0].isr_ack = 0xff;
 
 	s->pics[1].isr_ack = 0xff;
 
 	s->pics[1].isr_ack = 0xff;
 
+	pic_unlock(s);
 
 }
 
 }
 
 
 
 /*
 
 /*