--- old/src/cpu/ppc/vm/c1_Runtime1_ppc.cpp	2016-04-06 17:17:10.258383500 +0200
+++ new/src/cpu/ppc/vm/c1_Runtime1_ppc.cpp	2016-04-06 17:17:10.146383498 +0200
@@ -803,7 +803,7 @@
         Register tmp = R0;
         Register addr = R14;
         Register tmp2 = R15;
-        jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base;
+        volatile jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base;
 
         Label restart, refill, ret;