qmp.c

   1 /*
   2  * QEMU Management Protocol
   3  *
   4  * Copyright IBM, Corp. 2011
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  * Contributions after 2012-01-13 are licensed under the terms of the
  13  * GNU GPL, version 2 or (at your option) any later version.
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "qemu-version.h"
  18 #include "qemu/cutils.h"
  19 #include "qemu/option.h"
  20 #include "monitor/monitor.h"
  21 #include "sysemu/sysemu.h"
  22 #include "qemu/config-file.h"
  23 #include "qemu/uuid.h"
  24 #include "chardev/char.h"
  25 #include "ui/qemu-spice.h"
  26 #include "ui/vnc.h"
  27 #include "sysemu/kvm.h"
  28 #include "sysemu/arch_init.h"
  29 #include "hw/qdev.h"
  30 #include "sysemu/blockdev.h"
  31 #include "sysemu/block-backend.h"
  32 #include "qom/qom-qobject.h"
  33 #include "qapi/error.h"
  34 #include "qapi/qapi-commands-block-core.h"
  35 #include "qapi/qapi-commands-misc.h"
  36 #include "qapi/qapi-commands-ui.h"
  37 #include "qapi/qmp/qdict.h"
  38 #include "qapi/qmp/qerror.h"
  39 #include "qapi/qobject-input-visitor.h"
  40 #include "hw/boards.h"
  41 #include "qom/object_interfaces.h"
  42 #include "hw/mem/memory-device.h"
  43 #include "hw/acpi/acpi_dev_interface.h"
  44
  45 NameInfo *qmp_query_name(Error **errp)
  46 {
  47     NameInfo *info = g_malloc0(sizeof(*info));
  48
  49     if (qemu_name) {
  50         info->has_name = true;
  51         info->name = g_strdup(qemu_name);
  52     }
  53
  54     return info;
  55 }
  56
  57 VersionInfo *qmp_query_version(Error **errp)
  58 {
  59     VersionInfo *info = g_new0(VersionInfo, 1);
  60
  61     info->qemu = g_new0(VersionTriple, 1);
  62     info->qemu->major = QEMU_VERSION_MAJOR;
  63     info->qemu->minor = QEMU_VERSION_MINOR;
  64     info->qemu->micro = QEMU_VERSION_MICRO;
  65     info->package = g_strdup(QEMU_PKGVERSION);
  66
  67     return info;
  68 }
  69
  70 KvmInfo *qmp_query_kvm(Error **errp)
  71 {
  72     KvmInfo *info = g_malloc0(sizeof(*info));
  73
  74     info->enabled = kvm_enabled();
  75     info->present = kvm_available();
  76
  77     return info;
  78 }
  79
  80 UuidInfo *qmp_query_uuid(Error **errp)
  81 {
  82     UuidInfo *info = g_malloc0(sizeof(*info));
  83
  84     info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
  85     return info;
  86 }
  87
  88 void qmp_quit(Error **errp)
  89 {
  90     no_shutdown = 0;
  91     qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP);
  92 }
  93
  94 void qmp_stop(Error **errp)
  95 {
  96     /* if there is a dump in background, we should wait until the dump
  97      * finished */
  98     if (dump_in_progress()) {
  99         error_setg(errp, "There is a dump in process, please wait.");
 100         return;
 101     }
 102
 103     if (runstate_check(RUN_STATE_INMIGRATE)) {
 104         autostart = 0;
 105     } else {
 106         vm_stop(RUN_STATE_PAUSED);
 107     }
 108 }
 109
 110 void qmp_system_reset(Error **errp)
 111 {
 112     qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP);
 113 }
 114
 115 void qmp_system_powerdown(Error **erp)
 116 {
 117     qemu_system_powerdown_request();
 118 }
 119
 120 void qmp_cpu_add(int64_t id, Error **errp)
 121 {
 122     MachineClass *mc;
 123
 124     mc = MACHINE_GET_CLASS(current_machine);
 125     if (mc->hot_add_cpu) {
 126         mc->hot_add_cpu(id, errp);
 127     } else {
 128         error_setg(errp, "Not supported");
 129     }
 130 }
 131
 132 void qmp_x_exit_preconfig(Error **errp)
 133 {
 134     if (!runstate_check(RUN_STATE_PRECONFIG)) {
 135         error_setg(errp, "The command is permitted only in '%s' state",
 136                    RunState_str(RUN_STATE_PRECONFIG));
 137         return;
 138     }
 139     qemu_exit_preconfig_request();
 140 }
 141
 142 void qmp_cont(Error **errp)
 143 {
 144     BlockBackend *blk;
 145     Error *local_err = NULL;
 146
 147     /* if there is a dump in background, we should wait until the dump
 148      * finished */
 149     if (dump_in_progress()) {
 150         error_setg(errp, "There is a dump in process, please wait.");
 151         return;
 152     }
 153
 154     if (runstate_needs_reset()) {
 155         error_setg(errp, "Resetting the Virtual Machine is required");
 156         return;
 157     } else if (runstate_check(RUN_STATE_SUSPENDED)) {
 158         return;
 159     }
 160
 161     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
 162         blk_iostatus_reset(blk);
 163     }
 164
 165     /* Continuing after completed migration. Images have been inactivated to
 166      * allow the destination to take control. Need to get control back now.
 167      *
 168      * If there are no inactive block nodes (e.g. because the VM was just
 169      * paused rather than completing a migration), bdrv_inactivate_all() simply
 170      * doesn't do anything. */
 171     bdrv_invalidate_cache_all(&local_err);
 172     if (local_err) {
 173         error_propagate(errp, local_err);
 174         return;
 175     }
 176
 177     if (runstate_check(RUN_STATE_INMIGRATE)) {
 178         autostart = 1;
 179     } else {
 180         vm_start();
 181     }
 182 }
 183
 184 void qmp_system_wakeup(Error **errp)
 185 {
 186     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
 187 }
 188
 189 ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 190 {
 191     Object *obj;
 192     bool ambiguous = false;
 193     ObjectPropertyInfoList *props = NULL;
 194     ObjectProperty *prop;
 195     ObjectPropertyIterator iter;
 196
 197     obj = object_resolve_path(path, &ambiguous);
 198     if (obj == NULL) {
 199         if (ambiguous) {
 200             error_setg(errp, "Path '%s' is ambiguous", path);
 201         } else {
 202             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 203                       "Device '%s' not found", path);
 204         }
 205         return NULL;
 206     }
 207
 208     object_property_iter_init(&iter, obj);
 209     while ((prop = object_property_iter_next(&iter))) {
 210         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
 211
 212         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
 213         entry->next = props;
 214         props = entry;
 215
 216         entry->value->name = g_strdup(prop->name);
 217         entry->value->type = g_strdup(prop->type);
 218     }
 219
 220     return props;
 221 }
 222
 223 void qmp_qom_set(const char *path, const char *property, QObject *value,
 224                  Error **errp)
 225 {
 226     Object *obj;
 227
 228     obj = object_resolve_path(path, NULL);
 229     if (!obj) {
 230         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 231                   "Device '%s' not found", path);
 232         return;
 233     }
 234
 235     object_property_set_qobject(obj, value, property, errp);
 236 }
 237
 238 QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
 239 {
 240     Object *obj;
 241
 242     obj = object_resolve_path(path, NULL);
 243     if (!obj) {
 244         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 245                   "Device '%s' not found", path);
 246         return NULL;
 247     }
 248
 249     return object_property_get_qobject(obj, property, errp);
 250 }
 251
 252 void qmp_set_password(const char *protocol, const char *password,
 253                       bool has_connected, const char *connected, Error **errp)
 254 {
 255     int disconnect_if_connected = 0;
 256     int fail_if_connected = 0;
 257     int rc;
 258
 259     if (has_connected) {
 260         if (strcmp(connected, "fail") == 0) {
 261             fail_if_connected = 1;
 262         } else if (strcmp(connected, "disconnect") == 0) {
 263             disconnect_if_connected = 1;
 264         } else if (strcmp(connected, "keep") == 0) {
 265             /* nothing */
 266         } else {
 267             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
 268             return;
 269         }
 270     }
 271
 272     if (strcmp(protocol, "spice") == 0) {
 273         if (!qemu_using_spice(errp)) {
 274             return;
 275         }
 276         rc = qemu_spice_set_passwd(password, fail_if_connected,
 277                                    disconnect_if_connected);
 278         if (rc != 0) {
 279             error_setg(errp, QERR_SET_PASSWD_FAILED);
 280         }
 281         return;
 282     }
 283
 284     if (strcmp(protocol, "vnc") == 0) {
 285         if (fail_if_connected || disconnect_if_connected) {
 286             /* vnc supports "connected=keep" only */
 287             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
 288             return;
 289         }
 290         /* Note that setting an empty password will not disable login through
 291          * this interface. */
 292         rc = vnc_display_password(NULL, password);
 293         if (rc < 0) {
 294             error_setg(errp, QERR_SET_PASSWD_FAILED);
 295         }
 296         return;
 297     }
 298
 299     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 300 }
 301
 302 void qmp_expire_password(const char *protocol, const char *whenstr,
 303                          Error **errp)
 304 {
 305     time_t when;
 306     int rc;
 307
 308     if (strcmp(whenstr, "now") == 0) {
 309         when = 0;
 310     } else if (strcmp(whenstr, "never") == 0) {
 311         when = TIME_MAX;
 312     } else if (whenstr[0] == '+') {
 313         when = time(NULL) + strtoull(whenstr+1, NULL, 10);
 314     } else {
 315         when = strtoull(whenstr, NULL, 10);
 316     }
 317
 318     if (strcmp(protocol, "spice") == 0) {
 319         if (!qemu_using_spice(errp)) {
 320             return;
 321         }
 322         rc = qemu_spice_set_pw_expire(when);
 323         if (rc != 0) {
 324             error_setg(errp, QERR_SET_PASSWD_FAILED);
 325         }
 326         return;
 327     }
 328
 329     if (strcmp(protocol, "vnc") == 0) {
 330         rc = vnc_display_pw_expire(NULL, when);
 331         if (rc != 0) {
 332             error_setg(errp, QERR_SET_PASSWD_FAILED);
 333         }
 334         return;
 335     }
 336
 337     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 338 }
 339
 340 #ifdef CONFIG_VNC
 341 void qmp_change_vnc_password(const char *password, Error **errp)
 342 {
 343     if (vnc_display_password(NULL, password) < 0) {
 344         error_setg(errp, QERR_SET_PASSWD_FAILED);
 345     }
 346 }
 347
 348 static void qmp_change_vnc_listen(const char *target, Error **errp)
 349 {
 350     QemuOptsList *olist = qemu_find_opts("vnc");
 351     QemuOpts *opts;
 352
 353     if (strstr(target, "id=")) {
 354         error_setg(errp, "id not supported");
 355         return;
 356     }
 357
 358     opts = qemu_opts_find(olist, "default");
 359     if (opts) {
 360         qemu_opts_del(opts);
 361     }
 362     opts = vnc_parse(target, errp);
 363     if (!opts) {
 364         return;
 365     }
 366
 367     vnc_display_open("default", errp);
 368 }
 369
 370 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
 371                            Error **errp)
 372 {
 373     if (strcmp(target, "passwd") == 0 || strcmp(target, "password") == 0) {
 374         if (!has_arg) {
 375             error_setg(errp, QERR_MISSING_PARAMETER, "password");
 376         } else {
 377             qmp_change_vnc_password(arg, errp);
 378         }
 379     } else {
 380         qmp_change_vnc_listen(target, errp);
 381     }
 382 }
 383 #endif /* !CONFIG_VNC */
 384
 385 void qmp_change(const char *device, const char *target,
 386                 bool has_arg, const char *arg, Error **errp)
 387 {
 388     if (strcmp(device, "vnc") == 0) {
 389 #ifdef CONFIG_VNC
 390         qmp_change_vnc(target, has_arg, arg, errp);
 391 #else
 392         error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 393 #endif
 394     } else {
 395         qmp_blockdev_change_medium(true, device, false, NULL, target,
 396                                    has_arg, arg, false, 0, errp);
 397     }
 398 }
 399
 400 static void qom_list_types_tramp(ObjectClass *klass, void *data)
 401 {
 402     ObjectTypeInfoList *e, **pret = data;
 403     ObjectTypeInfo *info;
 404     ObjectClass *parent = object_class_get_parent(klass);
 405
 406     info = g_malloc0(sizeof(*info));
 407     info->name = g_strdup(object_class_get_name(klass));
 408     info->has_abstract = info->abstract = object_class_is_abstract(klass);
 409     if (parent) {
 410         info->has_parent = true;
 411         info->parent = g_strdup(object_class_get_name(parent));
 412     }
 413
 414     e = g_malloc0(sizeof(*e));
 415     e->value = info;
 416     e->next = *pret;
 417     *pret = e;
 418 }
 419
 420 ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
 421                                        const char *implements,
 422                                        bool has_abstract,
 423                                        bool abstract,
 424                                        Error **errp)
 425 {
 426     ObjectTypeInfoList *ret = NULL;
 427
 428     object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
 429
 430     return ret;
 431 }
 432
 433 /* Return a DevicePropertyInfo for a qdev property.
 434  *
 435  * If a qdev property with the given name does not exist, use the given default
 436  * type.  If the qdev property info should not be shown, return NULL.
 437  *
 438  * The caller must free the return value.
 439  */
 440 static ObjectPropertyInfo *make_device_property_info(ObjectClass *klass,
 441                                                   const char *name,
 442                                                   const char *default_type,
 443                                                   const char *description)
 444 {
 445     ObjectPropertyInfo *info;
 446     Property *prop;
 447
 448     do {
 449         for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
 450             if (strcmp(name, prop->name) != 0) {
 451                 continue;
 452             }
 453
 454             /*
 455              * TODO Properties without a parser are just for dirty hacks.
 456              * qdev_prop_ptr is the only such PropertyInfo.  It's marked
 457              * for removal.  This conditional should be removed along with
 458              * it.
 459              */
 460             if (!prop->info->set && !prop->info->create) {
 461                 return NULL;           /* no way to set it, don't show */
 462             }
 463
 464             info = g_malloc0(sizeof(*info));
 465             info->name = g_strdup(prop->name);
 466             info->type = default_type ? g_strdup(default_type)
 467                                       : g_strdup(prop->info->name);
 468             info->has_description = !!prop->info->description;
 469             info->description = g_strdup(prop->info->description);
 470             return info;
 471         }
 472         klass = object_class_get_parent(klass);
 473     } while (klass != object_class_by_name(TYPE_DEVICE));
 474
 475     /* Not a qdev property, use the default type */
 476     info = g_malloc0(sizeof(*info));
 477     info->name = g_strdup(name);
 478     info->type = g_strdup(default_type);
 479     info->has_description = !!description;
 480     info->description = g_strdup(description);
 481
 482     return info;
 483 }
 484
 485 ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
 486                                                 Error **errp)
 487 {
 488     ObjectClass *klass;
 489     Object *obj;
 490     ObjectProperty *prop;
 491     ObjectPropertyIterator iter;
 492     ObjectPropertyInfoList *prop_list = NULL;
 493
 494     klass = object_class_by_name(typename);
 495     if (klass == NULL) {
 496         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 497                   "Device '%s' not found", typename);
 498         return NULL;
 499     }
 500
 501     klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
 502     if (klass == NULL) {
 503         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_DEVICE);
 504         return NULL;
 505     }
 506
 507     if (object_class_is_abstract(klass)) {
 508         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 509                    "non-abstract device type");
 510         return NULL;
 511     }
 512
 513     obj = object_new(typename);
 514
 515     object_property_iter_init(&iter, obj);
 516     while ((prop = object_property_iter_next(&iter))) {
 517         ObjectPropertyInfo *info;
 518         ObjectPropertyInfoList *entry;
 519
 520         /* Skip Object and DeviceState properties */
 521         if (strcmp(prop->name, "type") == 0 ||
 522             strcmp(prop->name, "realized") == 0 ||
 523             strcmp(prop->name, "hotpluggable") == 0 ||
 524             strcmp(prop->name, "hotplugged") == 0 ||
 525             strcmp(prop->name, "parent_bus") == 0) {
 526             continue;
 527         }
 528
 529         /* Skip legacy properties since they are just string versions of
 530          * properties that we already list.
 531          */
 532         if (strstart(prop->name, "legacy-", NULL)) {
 533             continue;
 534         }
 535
 536         info = make_device_property_info(klass, prop->name, prop->type,
 537                                          prop->description);
 538         if (!info) {
 539             continue;
 540         }
 541
 542         entry = g_malloc0(sizeof(*entry));
 543         entry->value = info;
 544         entry->next = prop_list;
 545         prop_list = entry;
 546     }
 547
 548     object_unref(obj);
 549
 550     return prop_list;
 551 }
 552
 553 ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
 554                                              Error **errp)
 555 {
 556     ObjectClass *klass;
 557     Object *obj = NULL;
 558     ObjectProperty *prop;
 559     ObjectPropertyIterator iter;
 560     ObjectPropertyInfoList *prop_list = NULL;
 561
 562     klass = object_class_by_name(typename);
 563     if (klass == NULL) {
 564         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 565                   "Class '%s' not found", typename);
 566         return NULL;
 567     }
 568
 569     klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
 570     if (klass == NULL) {
 571         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
 572         return NULL;
 573     }
 574
 575     if (object_class_is_abstract(klass)) {
 576         object_class_property_iter_init(&iter, klass);
 577     } else {
 578         obj = object_new(typename);
 579         object_property_iter_init(&iter, obj);
 580     }
 581     while ((prop = object_property_iter_next(&iter))) {
 582         ObjectPropertyInfo *info;
 583         ObjectPropertyInfoList *entry;
 584
 585         info = g_malloc0(sizeof(*info));
 586         info->name = g_strdup(prop->name);
 587         info->type = g_strdup(prop->type);
 588         info->has_description = !!prop->description;
 589         info->description = g_strdup(prop->description);
 590
 591         entry = g_malloc0(sizeof(*entry));
 592         entry->value = info;
 593         entry->next = prop_list;
 594         prop_list = entry;
 595     }
 596
 597     object_unref(obj);
 598
 599     return prop_list;
 600 }
 601
 602 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 603 {
 604     return arch_query_cpu_definitions(errp);
 605 }
 606
 607 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 608                                                      CpuModelInfo *model,
 609                                                      Error **errp)
 610 {
 611     return arch_query_cpu_model_expansion(type, model, errp);
 612 }
 613
 614 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *modela,
 615                                                     CpuModelInfo *modelb,
 616                                                     Error **errp)
 617 {
 618     return arch_query_cpu_model_comparison(modela, modelb, errp);
 619 }
 620
 621 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *modela,
 622                                                    CpuModelInfo *modelb,
 623                                                    Error **errp)
 624 {
 625     return arch_query_cpu_model_baseline(modela, modelb, errp);
 626 }
 627
 628 void qmp_add_client(const char *protocol, const char *fdname,
 629                     bool has_skipauth, bool skipauth, bool has_tls, bool tls,
 630                     Error **errp)
 631 {
 632     Chardev *s;
 633     int fd;
 634
 635     fd = monitor_get_fd(cur_mon, fdname, errp);
 636     if (fd < 0) {
 637         return;
 638     }
 639
 640     if (strcmp(protocol, "spice") == 0) {
 641         if (!qemu_using_spice(errp)) {
 642             close(fd);
 643             return;
 644         }
 645         skipauth = has_skipauth ? skipauth : false;
 646         tls = has_tls ? tls : false;
 647         if (qemu_spice_display_add_client(fd, skipauth, tls) < 0) {
 648             error_setg(errp, "spice failed to add client");
 649             close(fd);
 650         }
 651         return;
 652 #ifdef CONFIG_VNC
 653     } else if (strcmp(protocol, "vnc") == 0) {
 654         skipauth = has_skipauth ? skipauth : false;
 655         vnc_display_add_client(NULL, fd, skipauth);
 656         return;
 657 #endif
 658     } else if ((s = qemu_chr_find(protocol)) != NULL) {
 659         if (qemu_chr_add_client(s, fd) < 0) {
 660             error_setg(errp, "failed to add client");
 661             close(fd);
 662             return;
 663         }
 664         return;
 665     }
 666
 667     error_setg(errp, "protocol '%s' is invalid", protocol);
 668     close(fd);
 669 }
 670
 671
 672 void qmp_object_add(const char *type, const char *id,
 673                     bool has_props, QObject *props, Error **errp)
 674 {
 675     QDict *pdict;
 676     Visitor *v;
 677     Object *obj;
 678
 679     if (props) {
 680         pdict = qobject_to(QDict, props);
 681         if (!pdict) {
 682             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 683             return;
 684         }
 685         qobject_ref(pdict);
 686     } else {
 687         pdict = qdict_new();
 688     }
 689
 690     v = qobject_input_visitor_new(QOBJECT(pdict));
 691     obj = user_creatable_add_type(type, id, pdict, v, errp);
 692     visit_free(v);
 693     if (obj) {
 694         object_unref(obj);
 695     }
 696     qobject_unref(pdict);
 697 }
 698
 699 void qmp_object_del(const char *id, Error **errp)
 700 {
 701     user_creatable_del(id, errp);
 702 }
 703
 704 MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
 705 {
 706     return qmp_memory_device_list();
 707 }
 708
 709 ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
 710 {
 711     bool ambig;
 712     ACPIOSTInfoList *head = NULL;
 713     ACPIOSTInfoList **prev = &head;
 714     Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);
 715
 716     if (obj) {
 717         AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
 718         AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);
 719
 720         adevc->ospm_status(adev, &prev);
 721     } else {
 722         error_setg(errp, "command is not supported, missing ACPI device");
 723     }
 724
 725     return head;
 726 }
 727
 728 MemoryInfo *qmp_query_memory_size_summary(Error **errp)
 729 {
 730     MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
 731
 732     mem_info->base_memory = ram_size;
 733
 734     mem_info->plugged_memory = get_plugged_memory_size();
 735     mem_info->has_plugged_memory =
 736         mem_info->plugged_memory != (uint64_t)-1;
 737
 738     return mem_info;
 739 }