diff --git a/[refs] b/[refs]
index c66fde9ec749..92ab63758fff 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2f4cf721eb2ff23b60af2932fd9fa4026f2a1164
+refs/heads/master: 4721e2214b5fd6eca48caea76afb1bad3148930f
diff --git a/trunk/arch/ppc64/mm/init.c b/trunk/arch/ppc64/mm/init.c
index b3b1e9c1770a..a14ab87df491 100644
--- a/trunk/arch/ppc64/mm/init.c
+++ b/trunk/arch/ppc64/mm/init.c
@@ -392,6 +392,7 @@ void free_initmem(void)
 
 	addr = (unsigned long)__init_begin;
 	for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
+		memset((void *)addr, 0xcc, PAGE_SIZE);
 		ClearPageReserved(virt_to_page(addr));
 		set_page_count(virt_to_page(addr), 1);
 		free_page(addr);