diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 81c07cd18643..0365ec9fc0c9 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -122,9 +122,9 @@ extern void *alloc_large_system_hash(const char *tablename,
 #define HASH_EARLY	0x00000001	/* Allocating during early boot? */
 
 /* Only NUMA needs hash distribution.
- * IA64 is known to have sufficient vmalloc space.
+ * IA64 and x86_64 have sufficient vmalloc space.
  */
-#if defined(CONFIG_NUMA) && defined(CONFIG_IA64)
+#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64))
 #define HASHDIST_DEFAULT 1
 #else
 #define HASHDIST_DEFAULT 0