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-rw-r--r--arch/powerpc/mm/init_64.c5
-rw-r--r--arch/powerpc/mm/mem.c12
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 95a45293e5ac..7e2246fb2f31 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -297,5 +297,10 @@ int __meminit vmemmap_populate(struct page *start_page,
return 0;
}
+
+void vmemmap_free(struct page *memmap, unsigned long nr_pages)
+{
+}
+
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 40df7c8f2096..f1f7409a4183 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -133,6 +133,18 @@ int arch_add_memory(int nid, u64 start, u64 size)
return __add_pages(nid, zone, start_pfn, nr_pages);
}
+
+#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;
+
+ zone = page_zone(pfn_to_page(start_pfn));
+ return __remove_pages(zone, start_pfn, nr_pages);
+}
+#endif
#endif /* CONFIG_MEMORY_HOTPLUG */
/*