From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: [patch 1/4] KVM: x86: grab pic lock in kvm_pic_clear_isr_ack Date: Thu, 28 May 2009 01:45:53 -0300 Message-ID: <20090528044808.079885404@localhost.localdomain> References: <20090528044552.151652861@localhost.localdomain> Cc: Marcelo Tosatti To: kvm@vger.kernel.org Return-path: Received: from mx2.redhat.com ([66.187.237.31]:35476 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750833AbZE1Eyt (ORCPT ); Thu, 28 May 2009 00:54:49 -0400 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n4S4spYb020734 for ; Thu, 28 May 2009 00:54:51 -0400 In-Reply-To: <4A19553F.1090903@redhat.com> Content-Disposition: inline; filename=pic-clear-isr-lock Sender: kvm-owner@vger.kernel.org List-ID: isr_ack is protected by kvm_pic->lock. Signed-off-by: Marcelo Tosatti 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); } /* -- --