diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 6409d9cf5965..b244f69ef682 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -10,6 +10,14 @@
 #define VM_MAP		0x00000004	/* vmap()ed pages */
 /* bits [20..32] reserved for arch specific ioremap internals */
 
+/*
+ * Maximum alignment for ioremap() regions.
+ * Can be overriden by arch-specific value.
+ */
+#ifndef IOREMAP_MAX_ORDER
+#define IOREMAP_MAX_ORDER	(7 + PAGE_SHIFT)	/* 128 pages */
+#endif
+
 struct vm_struct {
 	void			*addr;
 	unsigned long		size;
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 8ff16a1eee6a..67b358e57ef6 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -158,8 +158,6 @@ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
 	return err;
 }
 
-#define IOREMAP_MAX_ORDER	(7 + PAGE_SHIFT)	/* 128 pages */
-
 struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
 				unsigned long start, unsigned long end)
 {