diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 1b55c7864291..5a1f015ea9f3 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -595,6 +595,7 @@ out:
 	of_node_put(np);
 	return id;
 }
+EXPORT_SYMBOL_GPL(cpu_to_core_id);
 
 /* Helper routines for cpu to core mapping */
 int cpu_core_index_of_thread(int cpu)