--- a/hotspot/src/cpu/sparc/vm/globalDefinitions_sparc.hpp	Mon Oct 13 22:11:39 2014 +0200
+++ b/hotspot/src/cpu/sparc/vm/globalDefinitions_sparc.hpp	Tue Oct 14 10:32:12 2014 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,4 +38,26 @@
 
 #define SUPPORTS_NATIVE_CX8
 
+// The expected size in bytes of a cache line, used to pad data structures.
+#if defined(TIERED)
+  #ifdef _LP64
+    // tiered, 64-bit, large machine
+    #define DEFAULT_CACHE_LINE_SIZE 128
+  #else
+    // tiered, 32-bit, medium machine
+    #define DEFAULT_CACHE_LINE_SIZE 64
+  #endif
+#elif defined(COMPILER1)
+  // pure C1, 32-bit, small machine
+  #define DEFAULT_CACHE_LINE_SIZE 16
+#elif defined(COMPILER2) || defined(SHARK)
+  #ifdef _LP64
+    // pure C2, 64-bit, large machine
+    #define DEFAULT_CACHE_LINE_SIZE 128
+  #else
+    // pure C2, 32-bit, medium machine
+    #define DEFAULT_CACHE_LINE_SIZE 64
+  #endif
+#endif
+
 #endif // CPU_SPARC_VM_GLOBALDEFINITIONS_SPARC_HPP