--- a/hotspot/src/cpu/ppc/vm/macroAssembler_ppc.cpp	Thu Nov 21 12:30:35 2013 -0800
+++ b/hotspot/src/cpu/ppc/vm/macroAssembler_ppc.cpp	Thu Nov 21 18:29:34 2013 -0800
@@ -2433,7 +2433,7 @@
 }
 
 void MacroAssembler::load_klass_with_trap_null_check(Register dst, Register src) {
-  if (false  NOT_LINUX(|| true) /*!os::zero_page_read_protected()*/) {
+  if (!os::zero_page_read_protected()) {
     if (TrapBasedNullChecks) {
       trap_null_check(src);
     }