diff options
| author | Gleb Natapov <gleb@redhat.com> | 2013-04-24 13:38:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 20:33:15 -0700 |
| commit | 32f7af708e7e73cc0e2a280a06fbb13a0b113692 (patch) | |
| tree | 48e0c642375638db86c0201faf480c675b891290 /arch | |
| parent | 69f1a527153ddf2bcaa1aa21ec6ea76ab060c52b (diff) | |
KVM: X86 emulator: fix source operand decoding for 8bit mov[zs]x instructions
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@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a335cc6cde7..a9c9d3e4837 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -4162,6 +4162,10 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op, 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; |