From: Avi Kivity Subject: [PATCH 35/48] KVM: Grab pic lock in kvm_pic_clear_isr_ack Date: Sun, 16 Aug 2009 12:29:55 +0300 Message-ID: <1250415008-17175-36-git-send-email-avi@redhat.com> References: <1250415008-17175-1-git-send-email-avi@redhat.com> Cc: linux-kernel@vger.kernel.org To: kvm@vger.kernel.org Return-path: In-Reply-To: <1250415008-17175-1-git-send-email-avi@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Marcelo Tosatti 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 files changed, 2 insertions(+), 0 deletions(-) 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); } /* -- 1.6.3.3