diff --git a/[refs] b/[refs]
index bb795120a1dc..a460e2fe2543 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9e865f58da5ff0a9c19669a49ac984117711757a
+refs/heads/master: bac27d35cbbf7c641efcc75b5330df8717d6db65
diff --git a/trunk/drivers/kvm/x86_emulate.c b/trunk/drivers/kvm/x86_emulate.c
index 1f979cb0df31..4b8a0cc9665e 100644
--- a/trunk/drivers/kvm/x86_emulate.c
+++ b/trunk/drivers/kvm/x86_emulate.c
@@ -1217,11 +1217,13 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 		}
 		break;
 	case 0x21: /* mov from dr to reg */
+		no_wb = 1;
 		if (modrm_mod != 3)
 			goto cannot_emulate;
 		rc = emulator_get_dr(ctxt, modrm_reg, &_regs[modrm_rm]);
 		break;
 	case 0x23: /* mov from reg to dr */
+		no_wb = 1;
 		if (modrm_mod != 3)
 			goto cannot_emulate;
 		rc = emulator_set_dr(ctxt, modrm_reg, _regs[modrm_rm]);