--- a/src/share/vm/runtime/os.hpp	Fri Apr 05 18:53:57 2013 +0200
+++ b/src/share/vm/runtime/os.hpp	Sat Apr 06 20:04:06 2013 +0200
@@ -180,11 +180,11 @@
   // Interface for detecting multiprocessor system
   static inline bool is_MP() {
     assert(_processor_count > 0, "invalid processor count");
-    return _processor_count > 1;
+    return _processor_count > 1 || AssumeMP;
   }
   static julong available_memory();
   static julong physical_memory();
-  static julong allocatable_physical_memory(julong size);
+  static bool has_allocatable_memory_limit(julong* limit);
   static bool is_server_class_machine();
 
   // number of CPUs