linux-kernel - [PATCH] KVM: Emulator: Opcode 0x80 gets a byte immediate

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Message-Id: <1335536616-8524-1-git-send-email-namit@cs.technion.ac.il>
Date:	Fri, 27 Apr 2012 17:23:36 +0300
From:	Nadav Amit <namit@...technion.ac.il>
To:	avi@...hat.com, mtosatti@...hat.com
Cc:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org,
	Nadav Amit <namit@...technion.ac.il>
Subject: [PATCH] KVM: Emulator: Opcode 0x80 gets a byte immediate

The single byte opcode 0x80 should get a byte immediate.
The previous emulation is broken for opcode 0x80.
---
 arch/x86/kvm/emulate.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 8375622..dd53e53 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3464,7 +3464,7 @@ static struct opcode opcode_table[256] = {
 	/* 0x70 - 0x7F */
 	X16(D(SrcImmByte)),
 	/* 0x80 - 0x87 */
-	G(ByteOp | DstMem | SrcImm | ModRM | Group, group1),
+	G(ByteOp | DstMem | SrcImmByte | ModRM | Group, group1),
 	G(DstMem | SrcImm | ModRM | Group, group1),
 	G(ByteOp | DstMem | SrcImm | ModRM | No64 | Group, group1),
 	G(DstMem | SrcImmByte | ModRM | Group, group1),
-- 
1.7.4.1

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