--- old/src/hotspot/share/gc/parallel/psOldGen.cpp	2020-08-24 12:25:40.880159902 +0200
+++ new/src/hotspot/share/gc/parallel/psOldGen.cpp	2020-08-24 12:25:40.508158058 +0200
@@ -131,7 +131,9 @@
   _object_space = new MutableSpace(virtual_space()->alignment());
   object_space()->initialize(cmr,
                              SpaceDecorator::Clear,
-                             SpaceDecorator::Mangle);
+                             SpaceDecorator::Mangle,
+                             MutableSpace::SetupPages,
+                             &(ParallelScavengeHeap::heap()->workers()));
 
   // Update the start_array
   start_array()->set_covered_region(cmr);