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