KVM: x86 emulator: fix 'and AL,imm8' instruction decoding

'and AL,imm8' should be mask as ByteOp, otherwise the dest operand
length will no correct and we may fill the full EAX when writeback.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index ad8d7cdd1eb9..59568ad21ab3 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -123,7 +123,7 @@ static u32 opcode_table[256] = {
         /* 0x20 - 0x27 */
         ByteOp | DstMem | SrcReg | ModRM | Lock, DstMem | SrcReg | ModRM | Lock,
         ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,
-        DstAcc | SrcImmByte, DstAcc | SrcImm, 0, 0,
+        ByteOp | DstAcc | SrcImmByte, DstAcc | SrcImm, 0, 0,
         /* 0x28 - 0x2F */
         ByteOp | DstMem | SrcReg | ModRM | Lock, DstMem | SrcReg | ModRM | Lock,
         ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM,