--- a/hotspot/src/cpu/ppc/vm/ppc.ad	Thu Jun 02 09:44:41 2016 +0200
+++ b/hotspot/src/cpu/ppc/vm/ppc.ad	Fri May 13 15:22:48 2016 +0200
@@ -1432,7 +1432,7 @@
 
   const bool method_needs_polling = do_polling() && C->is_method_compilation();
   const bool method_is_frameless  = false /* TODO: PPC port C->is_frameless_method()*/;
-  const Register return_pc        = R11;
+  const Register return_pc        = R31;  // Must survive C-call to enable_stack_reserved_zone().
   const Register polling_page     = R12;
 
   if (!method_is_frameless) {
@@ -1456,6 +1456,10 @@
     __ addi(R1_SP, R1_SP, (int)framesize);
   }
 
+  if (StackReservedPages > 0 && C->has_reserved_stack_access()) {
+    __ reserved_stack_check(return_pc);
+  }
+
   if (method_needs_polling) {
     // We need to mark the code position where the load from the safepoint
     // polling page was emitted as relocInfo::poll_return_type here.