diff -r e134dc1879b7 -r 04d83ba48607 src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp
--- a/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	Thu Sep 22 13:16:27 2016 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	Thu May 24 17:06:56 2018 +0800
@@ -1329,6 +1329,9 @@
   const int obj_size = obj->size();
   if (mark_bitmap()->mark_obj(obj, obj_size)) {
     _summary_data.add_obj(obj, obj_size);
+#ifdef MIPS64
+    if (UseSyncLevel >= 2000) OrderAccess::fence();
+#endif
     return true;
   } else {
     return false;
@@ -1363,6 +1366,9 @@
     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
     if (mark_bitmap()->is_unmarked(obj) && mark_obj(obj)) {
       cm->push(obj);
+#ifdef MIPS64
+      if (UseSyncLevel >= 2000) OrderAccess::fence();
+#endif
     }
   }
 }