diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 3890234..f6d0584 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -522,6 +522,7 @@
 
 EXPORT_SYMBOL(__node_distance);
 
+#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) || defined(CONFIG_ACPI_HOTPLUG_MEMORY)
 int memory_add_physaddr_to_nid(u64 start)
 {
 	int i, ret = 0;
@@ -533,4 +534,4 @@
 	return ret;
 }
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
-
+#endif