--- old/src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp	2018-01-24 21:13:46.616909157 -0500
+++ new/src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp	2018-01-24 21:13:46.565909159 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012, 2015 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -510,7 +510,7 @@
 //    pthread_attr_getstack()
 
 static void current_stack_region(address * bottom, size_t * size) {
-  if (os::Linux::is_initial_thread()) {
+  if (os::is_primordial_thread()) {
      // initial thread needs special handling because pthread_getattr_np()
      // may return bogus value.
     *bottom = os::Linux::initial_thread_stack_bottom();