KVM: x86: emulator: inc/dec can have lock prefix

commit c0e0608cb902af1a1fd8d413ec0a07ee1e62c652 upstream.

Mark inc (0xfe/0 0xff/0) and dec (0xfe/1 0xff/1) as lock prefix capable.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 5ac0bb465ed67fd725881ccacfeb22e44597f4cf..715a7fa42be64e5045f7bcc19c3a87b9b4ad706c 100644 (file)
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -345,10 +345,10 @@ static u32 group_table[] = {
        DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM,
        0, 0, 0, 0,
        [Group4*8] =
-       ByteOp | DstMem | SrcNone | ModRM, ByteOp | DstMem | SrcNone | ModRM,
+       ByteOp | DstMem | SrcNone | ModRM | Lock, ByteOp | DstMem | SrcNone | ModRM | Lock,
        0, 0, 0, 0, 0, 0,
        [Group5*8] =
-       DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM,
+       DstMem | SrcNone | ModRM | Lock, DstMem | SrcNone | ModRM | Lock,
        SrcMem | ModRM | Stack, 0,
        SrcMem | ModRM | Stack, SrcMem | ModRM | Src2Mem16 | ImplicitOps,
        SrcMem | ModRM | Stack, 0,