diff -r c2ce24504334 -r cc5c3ef1f03a src/share/vm/prims/whitebox.cpp
--- a/src/share/vm/prims/whitebox.cpp	Tue Jun 24 15:50:50 2014 +0200
+++ b/src/share/vm/prims/whitebox.cpp	Wed Nov 26 10:32:21 2014 -0800
@@ -73,6 +73,9 @@
   return heapOopSize;
 WB_END
 
+WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
+  return os::vm_page_size();
+WB_END
 
 class WBIsKlassAliveClosure : public KlassClosure {
     Symbol* _name;
@@ -972,6 +975,7 @@
   {CC"getObjectSize",      CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize     },
   {CC"isObjectInOldGen",   CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen  },
   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
+  {CC"getVMPageSize",      CC"()I",                   (void*)&WB_GetVMPageSize     },
   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
   {CC"classKnownToNotExist",
                            CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},