linux-kernel - [PATCH 31/36] KVM: x86 emulator: Fix handling of VMMCALL instruction

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Message-Id: <1229242029-13410-32-git-send-email-avi@redhat.com>
Date:	Sun, 14 Dec 2008 10:07:04 +0200
From:	Avi Kivity <avi@...hat.com>
To:	kvm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Amit Shah <amit.shah@...hat.com>
Subject: [PATCH 31/36] KVM: x86 emulator: Fix handling of VMMCALL instruction

From: Amit Shah <amit.shah@...hat.com>

The VMMCALL instruction doesn't get recognised and isn't processed
by the emulator.

This is seen on an Intel host that tries to execute the VMMCALL
instruction after a guest live migrates from an AMD host.

Signed-off-by: Amit Shah <amit.shah@...hat.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
 arch/x86/kvm/x86_emulate.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index 219dc31..d174db7 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -311,7 +311,7 @@ static u32 group_table[] = {
 
 static u32 group2_table[] = {
 	[Group7*8] =
-	SrcNone | ModRM, 0, 0, 0,
+	SrcNone | ModRM, 0, 0, SrcNone | ModRM,
 	SrcNone | ModRM | DstMem | Mov, 0,
 	SrcMem16 | ModRM | Mov, 0,
 };
-- 
1.6.0.3

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