diff -r a32b2fc66321 -r 4ef36b2a6a3a hotspot/src/cpu/zero/vm/globals_zero.hpp
--- a/hotspot/src/cpu/zero/vm/globals_zero.hpp	Thu Sep 30 12:05:08 2010 -0400
+++ b/hotspot/src/cpu/zero/vm/globals_zero.hpp	Thu Oct 07 15:12:57 2010 -0400
@@ -45,3 +45,5 @@
 
 define_pd_global(bool,  RewriteBytecodes,     true);
 define_pd_global(bool,  RewriteFrequentPairs, true);
+
+define_pd_global(bool,  UseMembar,            false);