From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Thu, 4 Jun 2009 18:08:21 +0000 (-0300)
Subject: KVM: Grab pic lock in kvm_pic_clear_isr_ack
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9f4cc12765ea48a40347449d6802a3322ced8709;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

KVM: Grab pic lock in kvm_pic_clear_isr_ack

isr_ack is protected by kvm_pic->lock.

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

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 2520922282d5..bf94a45f4f86 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);
 }
 
 /*