--- a/hotspot/src/share/vm/utilities/globalDefinitions.hpp	Tue Jan 07 17:24:59 2014 +0100
+++ b/hotspot/src/share/vm/utilities/globalDefinitions.hpp	Thu Jan 16 14:25:51 2014 +0100
@@ -398,6 +398,17 @@
 #define PLATFORM_NATIVE_STACK_WALKING_SUPPORTED 1
 #endif
 
+// To assure the IRIW property on processors that are not multiple copy
+// atomic, sync instructions must be issued between volatile reads to
+// assure their ordering, instead of after volatile stores.
+// (See "A Tutorial Introduction to the ARM and POWER Relaxed Memory Models"
+// by Luc Maranget, Susmit Sarkar and Peter Sewell, INRIA/Cambridge)
+#ifdef CPU_NOT_MULTIPLE_COPY_ATOMIC
+const bool support_IRIW_for_not_multiple_copy_atomic_cpu = true;
+#else
+const bool support_IRIW_for_not_multiple_copy_atomic_cpu = false;
+#endif
+
 // The byte alignment to be used by Arena::Amalloc.  See bugid 4169348.
 // Note: this value must be a power of 2