--- old/share/runtime/globals.hpp	2018-06-12 04:14:37.875190883 -0700
+++ new/share/runtime/globals.hpp	2018-06-12 04:14:37.847190882 -0700
@@ -2634,6 +2634,9 @@
           "Path to the directoy where a temporary file will be created "    \
           "to use as the backing store for Java Heap.")                     \
                                                                             \
+  product(ccstr, AllocateOldGenAt, NULL,                                    \
+          "OldGen mount point where Old gen heap will be mapped.." )        \
+                                                                            \
   develop(bool, VerifyMetaspace, false,                                     \
           "Verify metaspace on chunk movements.")                           \
                                                                             \