1 files changed, 7 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 896e9cd49ecc..c40075d48ef9 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2947,6 +2947,13 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
 
 			swp_entry = make_device_private_entry(page, vma->vm_flags & VM_WRITE);
 			entry = swp_entry_to_pte(swp_entry);
+		} else {
+			/*
+			 * For now we only support migrating to un-addressable
+			 * device memory.
+			 */
+			pr_warn_once("Unsupported ZONE_DEVICE page type.\n");
+			goto abort;
 		}
 	} else {
 		entry = mk_pte(page, vma->vm_page_prot);