--- old/src/hotspot/share/memory/universe.cpp	2018-09-19 09:03:35.391697400 -0700
+++ new/src/hotspot/share/memory/universe.cpp	2018-09-19 09:03:34.155592600 -0700
@@ -807,13 +807,15 @@
   assert(!UseCompressedOops || (total_reserved <= (OopEncodingHeapMax - os::vm_page_size())),
       "heap size is too big for compressed oops");
 
-  // When AllocateOldGenAt is set, we cannot use largepages for entire heap memory.
-  // Only young gen which is allocated in dram can use large pages, but we currently don't support that.
-  bool use_large_pages = (AllocateOldGenAt != NULL) && UseLargePages && is_aligned(alignment, os::large_page_size());
+  bool use_large_pages = UseLargePages && is_aligned(alignment, os::large_page_size());
   assert(!UseLargePages
       || UseParallelGC
       || use_large_pages, "Wrong alignment to use large pages");
 
+  // When AllocateOldGenAt is set, we cannot use largepages for entire heap memory.
+  // Only young gen which is allocated in dram can use large pages, but we currently don't support that.
+  use_large_pages = (AllocateOldGenAt != NULL) ? false : use_large_pages;
+
   // Now create the space.
   ReservedHeapSpace total_rs(total_reserved, alignment, use_large_pages, AllocateHeapAt);