--- a/src/share/vm/runtime/arguments.cpp	Thu Mar 25 16:54:59 2010 -0700
+++ b/src/share/vm/runtime/arguments.cpp	Fri Mar 26 11:10:26 2010 -0400
@@ -1346,9 +1346,7 @@
   }
 
   if (FLAG_IS_DEFAULT(MarkStackSize)) {
-    // Size as a multiple of TaskQueueSuper::N which is larger
-    // for 64-bit.
-    FLAG_SET_DEFAULT(MarkStackSize, 128 * TaskQueueSuper::total_size());
+    FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE);
   }
   if (PrintGCDetails && Verbose) {
     tty->print_cr("MarkStackSize: %uk  MarkStackSizeMax: %uk",
@@ -2859,6 +2857,12 @@
   }
 #endif // _LP64
 
+  // MethodHandles code does not support TaggedStackInterpreter.
+  if (EnableMethodHandles && TaggedStackInterpreter) {
+    warning("TaggedStackInterpreter is not supported by MethodHandles code.  Disabling TaggedStackInterpreter.");
+    TaggedStackInterpreter = false;
+  }
+
   // Check the GC selections again.
   if (!check_gc_consistency()) {
     return JNI_EINVAL;