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[1/4] KVM: x86: grab pic lock in kvm_pic_clear_isr_ack

Message ID 20090528044808.079885404@localhost.localdomain (mailing list archive)
State New, archived
Headers show

Commit Message

Marcelo Tosatti May 28, 2009, 4:45 a.m. UTC
isr_ack is protected by kvm_pic->lock.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Patch

Index: kvm/arch/x86/kvm/i8259.c
===================================================================
--- kvm.orig/arch/x86/kvm/i8259.c
+++ kvm/arch/x86/kvm/i8259.c
@@ -72,8 +72,10 @@  static void pic_clear_isr(struct kvm_kpi
 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);
 }
 
 /*