diff -r 2783e5e132e3 -r 722866f5e209 hotspot/src/share/vm/gc/shared/genCollectedHeap.cpp
--- a/hotspot/src/share/vm/gc/shared/genCollectedHeap.cpp	Wed Feb 03 18:18:00 2016 +0100
+++ b/hotspot/src/share/vm/gc/shared/genCollectedHeap.cpp	Wed Feb 03 18:21:43 2016 +0100
@@ -458,7 +458,6 @@
         prepared_for_verification = true;
       }
 
-      assert(!_young_gen->performs_in_place_marking(), "No young generation do in place marking");
       collect_generation(_young_gen,
                          full,
                          size,
@@ -489,8 +488,6 @@
         prepare_for_verify();
       }
 
-      assert(_old_gen->performs_in_place_marking(), "All old generations do in place marking");
-
       if (do_young_collection) {
         // We did a young GC. Need a new GC id for the old GC.
         GCIdMarkAndRestore gc_id_mark;