This is a note to let you know that I've just added the patch titled
KVM: X86 emulator: fix source operand decoding for 8bit mov[zs]x instructions
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-x86-emulator-fix-source-operand-decoding-for-8bit-movx-instructions.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 660696d1d16a71e15549ce1bf74953be1592bcd3 Mon Sep 17 00:00:00 2001
From: Gleb Natapov <gleb@xxxxxxxxxx>
Date: Wed, 24 Apr 2013 13:38:36 +0300
Subject: KVM: X86 emulator: fix source operand decoding for 8bit mov[zs]x instructions
From: Gleb Natapov <gleb@xxxxxxxxxx>
commit 660696d1d16a71e15549ce1bf74953be1592bcd3 upstream.
Source operand for one byte mov[zs]x is decoded incorrectly if it is in
high byte register. Fix that.
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4030,6 +4030,10 @@ static int decode_operand(struct x86_emu
break;
case OpMem8:
ctxt->memop.bytes = 1;
+ if (ctxt->memop.type == OP_REG) {
+ ctxt->memop.addr.reg = decode_register(ctxt, ctxt->modrm_rm, 1);
+ fetch_register_operand(&ctxt->memop);
+ }
goto mem_common;
case OpMem16:
ctxt->memop.bytes = 2;
Patches currently in stable-queue which might be from gleb@xxxxxxxxxx are
queue-3.8/kvm-x86-emulator-fix-source-operand-decoding-for-8bit-movx-instructions.patch
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