From 5217973ef899ffecdd77743aae3b633994a08cde Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 13 Sep 2011 10:45:46 +0300 Subject: [PATCH] KVM: x86 emulator: qualify OpReg inhibit_byte_regs hack OpReg decoding has a hack that inhibits byte registers for movsx and movzx instructions. It should be replaced by something better, but meanwhile, qualify that the hack is only active for the destination operand. Note these instructions only use OpReg for the destination, but better to be explicit about it. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/emulate.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a0d6ceb4b454..17a8910f28ce 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3346,6 +3346,7 @@ static int decode_operand(struct x86_emulate_ctxt *ctxt, struct operand *op, switch (d) { case OpReg: decode_register_operand(ctxt, op, + op == &ctxt->dst && ctxt->twobyte && (ctxt->b == 0xb6 || ctxt->b == 0xb7)); break; case OpImmUByte: