1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index e10fd3732d10..af06539369b4 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1670,6 +1670,8 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt)
         switch (ctxt->modrm_reg) {
         case 0 ... 1:   /* test */
                 emulate_2op_SrcV(ctxt, "test");
+                /* Disable writeback. */
+                ctxt->dst.type = OP_NONE;
                 break;
         case 2: /* not */
                 ctxt->dst.val = ~ctxt->dst.val;
@@ -2513,6 +2515,8 @@ static int em_cmp(struct x86_emulate_ctxt *ctxt)
 static int em_test(struct x86_emulate_ctxt *ctxt)
 {
         emulate_2op_SrcV(ctxt, "test");
+        /* Disable writeback. */
+        ctxt->dst.type = OP_NONE;
         return X86EMUL_CONTINUE;
 }