diff --git a/kernel/memremap.c b/kernel/memremap.c
index a6d3823..0175321 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -27,6 +27,13 @@
 }
 #endif
 
+#ifndef arch_memremap_wb
+static void *arch_memremap_wb(resource_size_t offset, unsigned long size)
+{
+	return (__force void *)ioremap_cache(offset, size);
+}
+#endif
+
 static void *try_ram_remap(resource_size_t offset, size_t size)
 {
 	unsigned long pfn = PHYS_PFN(offset);
@@ -34,7 +41,7 @@
 	/* In the simple case just return the existing linear address */
 	if (pfn_valid(pfn) && !PageHighMem(pfn_to_page(pfn)))
 		return __va(offset);
-	return NULL; /* fallback to ioremap_cache */
+	return NULL; /* fallback to arch_memremap_wb */
 }
 
 /**
@@ -90,7 +97,7 @@
 		if (is_ram == REGION_INTERSECTS)
 			addr = try_ram_remap(offset, size);
 		if (!addr)
-			addr = ioremap_cache(offset, size);
+			addr = arch_memremap_wb(offset, size);
 	}
 
 	/*