From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: [patch 1/4] KVM: x86: grab pic lock in kvm_pic_clear_isr_ack
Date: Wed, 20 May 2009 15:48:42 -0300
Message-ID: <20090520185134.527194535@localhost.localdomain>
References: <20090520184841.954066003@localhost.localdomain>
Cc: Gregory Haskins <gregory.haskins@gmail.com>,
	Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org
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isr_ack is protected by kvm_pic->lock

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

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);
 }
 
 /*

-- 

--