diff --git a/mm/shmem.c b/mm/shmem.c
index e9342c370d067925820c9a4eb475053f48e275b0..9382528467a97866c4e66bc4078f5dc256891590 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -115,6 +115,9 @@ static unsigned long ddr_totalram_pages(void)
 	unsigned long managed_pages = 0;
 	pg_data_t *pgdat;
 
+	if (nodes_empty(cdmmask))
+		return totalram_pages;
+
 	for_each_online_node(nid) {
 		if (is_cdm_node(nid))
 			continue;