--- a/src/hotspot/share/memory/virtualspace.cpp	Thu Sep 05 08:26:44 2019 +0200
+++ b/src/hotspot/share/memory/virtualspace.cpp	Thu Sep 05 08:26:49 2019 +0200
@@ -637,6 +637,10 @@
   }
 }
 
+MemRegion ReservedHeapSpace::region() const {
+  return MemRegion((HeapWord*)base(), (HeapWord*)end());
+}
+
 // Reserve space for code segment.  Same as Java heap only we mark this as
 // executable.
 ReservedCodeSpace::ReservedCodeSpace(size_t r_size,