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-rw-r--r--arch/x86/kvm/emulate.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 08dbcff4045a..9367aaaacdf9 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1137,9 +1137,11 @@ static int em_fnstsw(struct x86_emulate_ctxt *ctxt)
static void decode_register_operand(struct x86_emulate_ctxt *ctxt,
struct operand *op)
{
- unsigned reg = ctxt->modrm_reg;
+ unsigned int reg;
- if (!(ctxt->d & ModRM))
+ if (ctxt->d & ModRM)
+ reg = ctxt->modrm_reg;
+ else
reg = (ctxt->b & 7) | ((ctxt->rex_prefix & 1) << 3);
if (ctxt->d & Sse) {