From 9f4cc12765ea48a40347449d6802a3322ced8709 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Thu, 4 Jun 2009 15:08:21 -0300 Subject: [PATCH] KVM: Grab pic lock in kvm_pic_clear_isr_ack isr_ack is protected by kvm_pic->lock. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kvm/i8259.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 2520922..bf94a45 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -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); } /* -- 2.7.4