diff -r d66300cdf939 -r 171c404abf72 hotspot/src/os/windows/vm/os_windows.cpp
--- a/hotspot/src/os/windows/vm/os_windows.cpp	Wed Dec 05 09:03:00 2007 -0800
+++ b/hotspot/src/os/windows/vm/os_windows.cpp	Wed Dec 05 09:04:00 2007 -0800
@@ -621,7 +621,12 @@
 }
 
 julong os::allocatable_physical_memory(julong size) {
+#ifdef _LP64
+  return size;
+#else
+  // Limit to 1400m because of the 2gb address space wall
   return MIN2(size, (julong)1400*M);
+#endif
 }
 
 // VC6 lacks DWORD_PTR