diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 85ce7ef9a512..42620e723abb 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -29,6 +29,7 @@ unsigned int nr_free_highpages(void);
 
 static inline unsigned int nr_free_highpages(void) { return 0; }
 
+#ifndef ARCH_HAS_KMAP
 static inline void *kmap(struct page *page)
 {
 	might_sleep();
@@ -41,6 +42,7 @@ static inline void *kmap(struct page *page)
 #define kunmap_atomic(addr, idx)	do { } while (0)
 #define kmap_atomic_pfn(pfn, idx)	page_address(pfn_to_page(pfn))
 #define kmap_atomic_to_page(ptr)	virt_to_page(ptr)
+#endif
 
 #endif /* CONFIG_HIGHMEM */