diff --git a/ChangeLog b/ChangeLog
index 4ac339664a..f56f9f6920 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-12-04  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* sysdeps/powerpc/tls.h (tcbhead_t): Add __private_ss field.
+
 2013-12-04  Alan Modra  <amodra@gmail.com>
 
 	* elf/elf.h (R_PPC64_TLSGD, R_PPC64_TLSLD, R_PPC64_TOCSAVE): Define.
diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h
index 8e0ada6bfa..c21c0271ef 100644
--- a/nptl/sysdeps/powerpc/tls.h
+++ b/nptl/sysdeps/powerpc/tls.h
@@ -61,6 +61,8 @@ typedef union dtv
    are private.  */
 typedef struct
 {
+  /* GCC split stack support.  */
+  void *__private_ss;
   /* Reservation for the Event-Based Branching ABI.  */
   uintptr_t ebb_handler;
   uintptr_t ebb_ctx_pointer;