--- old/src/cpu/ppc/vm/macroAssembler_ppc.hpp	2016-04-06 17:17:11.246383511 +0200
+++ new/src/cpu/ppc/vm/macroAssembler_ppc.hpp	2016-04-06 17:17:11.142383510 +0200
@@ -572,7 +572,7 @@
 
   // GC barrier support.
   void card_write_barrier_post(Register Rstore_addr, Register Rnew_val, Register Rtmp);
-  void card_table_write(jbyte* byte_map_base, Register Rtmp, Register Robj);
+  void card_table_write(volatile jbyte* byte_map_base, Register Rtmp, Register Robj);
 
 #if INCLUDE_ALL_GCS
   // General G1 pre-barrier generator.