From fc7a2de55c6ba0088d219a12f9825db54112e1a4 Mon Sep 17 00:00:00 2001
From: Gleb Natapov <gleb@redhat.com>
Date: Thu, 3 Sep 2009 12:10:34 +0300
Subject: KVM: Fix coalesced interrupt reporting in IOAPIC

commit 65a82211636f156a276cac3f8665605ae18f371f upstream.

This bug was introduced by b4a2f5e723e4f7df467.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 virt/kvm/ioapic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 1150c6d5c7b8..5f3980525191 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -188,6 +188,8 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
 			if ((edge && old_irr != ioapic->irr) ||
 			    (!edge && !entry.fields.remote_irr))
 				ret = ioapic_service(ioapic, irq);
+			else
+				ret = 0; /* report coalesced interrupt */
 		}
 	}
 	return ret;
-- 
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