diff --git a/super-intel.c b/super-intel.c
index 7654a11..73c6f32 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -345,7 +345,8 @@ enum imsm_update_type {
 	update_add_remove_disk,
 	update_reshape_container_disks,
 	update_reshape_migration,
-	update_takeover
+	update_takeover,
+	update_general_migration_checkpoint,
 };
 
 struct imsm_update_activate_spare {
@@ -398,6 +399,11 @@ struct imsm_update_reshape_migration {
 	int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */
 };
 
+struct imsm_update_general_migration_checkpoint {
+	enum imsm_update_type type;
+	__u32 curr_migr_unit;
+};
+
 struct disk_info {
 	__u8 serial[MAX_RAID_SERIAL_LEN];
 };