--- old/hotspot/src/share/vm/runtime/arguments.cpp	2017-09-15 12:05:06.000000000 -0700
+++ new/hotspot/src/share/vm/runtime/arguments.cpp	2017-09-15 12:05:05.000000000 -0700
@@ -3712,6 +3712,11 @@
   UNSUPPORTED_OPTION(TieredCompilation);
 #endif
 
+  if ((EnableMVT || EnableValhalla) &&
+      !create_numbered_property("jdk.module.addmods", "jdk.incubator.mvt", addmods_count++)) {
+    return JNI_ENOMEM;
+  }
+
 #if INCLUDE_JVMCI
   if (EnableJVMCI &&
       !create_numbered_property("jdk.module.addmods", "jdk.internal.vm.ci", addmods_count++)) {