void hmp_info_memdev(Monitor *mon, const QDict *qdict)
{
    Error *err = NULL;
    MemdevList *memdev_list = qmp_query_memdev(&err);
    MemdevList *m = memdev_list;
    StringOutputVisitor *ov;
    char *str;
    int i = 0;
    while (m) {
        ov = string_output_visitor_new(false);
        visit_type_uint16List(string_output_get_visitor(ov),
                              &m->value->host_nodes, NULL, NULL);
        monitor_printf(mon, "memory backend: %d\n", i);
        monitor_printf(mon, "  size:  %" PRId64 "\n", m->value->size);
        monitor_printf(mon, "  merge: %s\n",
                       m->value->merge ? "true" : "false");
        monitor_printf(mon, "  dump: %s\n",
                       m->value->dump ? "true" : "false");
        monitor_printf(mon, "  prealloc: %s\n",
                       m->value->prealloc ? "true" : "false");
        monitor_printf(mon, "  policy: %s\n",
                       HostMemPolicy_lookup[m->value->policy]);
        str = string_output_get_string(ov);
        monitor_printf(mon, "  host nodes: %s\n", str);
        g_free(str);
        string_output_visitor_cleanup(ov);
        m = m->next;
        i++;
    }
    monitor_printf(mon, "\n");
}