diff --git a/kernel/fork.c b/kernel/fork.c
index 16a776e..4ae8cfc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1298,6 +1298,10 @@
 	return pid;
 }
 
+#ifndef ARCH_MIN_MMSTRUCT_ALIGN
+#define ARCH_MIN_MMSTRUCT_ALIGN 0
+#endif
+
 void __init proc_caches_init(void)
 {
 	sighand_cachep = kmem_cache_create("sighand_cache",
@@ -1316,6 +1320,6 @@
 			sizeof(struct vm_area_struct), 0,
 			SLAB_PANIC, NULL, NULL);
 	mm_cachep = kmem_cache_create("mm_struct",
-			sizeof(struct mm_struct), 0,
+			sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
 			SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
 }