static void pc_dimm_check_memdev_is_busy(Object *obj, const char *name, Object *val, Error **errp) { MemoryRegion *mr; Error *local_err = NULL; mr = host_memory_backend_get_memory(MEMORY_BACKEND(val), &local_err); if (local_err) { goto out; } if (memory_region_is_mapped(mr)) { char *path = object_get_canonical_path_component(val); error_setg(&local_err, "can't use already busy memdev: %s", path); g_free(path); } else { qdev_prop_allow_set_link_before_realize(obj, name, val, &local_err); } out: error_propagate(errp, local_err); }