1 files changed, 17 insertions, 0 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 82cc576fab15..105794037143 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -558,4 +558,21 @@ int memory_add_physaddr_to_nid(u64 addr)
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #endif
 
+#ifdef CONFIG_MEMORY_HOTREMOVE
+int arch_remove_memory(u64 start, u64 size)
+{
+        unsigned long start_pfn = start >> PAGE_SHIFT;
+        unsigned long nr_pages = size >> PAGE_SHIFT;
+        struct zone *zone;
+        int ret;
+
+        zone = page_zone(pfn_to_page(start_pfn));
+        ret = __remove_pages(zone, start_pfn, nr_pages);
+        if (unlikely(ret))
+                pr_warn("%s: Failed, __remove_pages() == %d\n", __func__,
+                        ret);
+
+        return ret;
+}
+#endif
 #endif /* CONFIG_MEMORY_HOTPLUG */