diff --git a/mm/memory.c b/mm/memory.c
index 4b126b11eaf4cd21fbba0508661513ea91232fab..d470bcd7d2ed48be796686421ce8943927739ff9 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -149,7 +149,7 @@ static int __init init_zero_pfn(void)
 	zero_pfn = page_to_pfn(ZERO_PAGE(0));
 	return 0;
 }
-core_initcall(init_zero_pfn);
+early_initcall(init_zero_pfn);
 
 
 #if defined(SPLIT_RSS_COUNTING)