qapi/machine.json

   1 # -*- Mode: Python -*-
   2 #
   3 # This work is licensed under the terms of the GNU GPL, version 2 or later.
   4 # See the COPYING file in the top-level directory.
   5
   6 ##
   7 # = Machines
   8 ##
   9
  10 { 'include': 'common.json' }
  11
  12 ##
  13 # @CpuInfoArch:
  14 #
  15 # An enumeration of cpu types that enable additional information during
  16 # @query-cpus and @query-cpus-fast.
  17 #
  18 # @s390: since 2.12
  19 #
  20 # @riscv: since 2.12
  21 #
  22 # Since: 2.6
  23 ##
  24 { 'enum': 'CpuInfoArch',
  25   'data': ['x86', 'sparc', 'ppc', 'mips', 'tricore', 's390', 'riscv', 'other' ] }
  26
  27 ##
  28 # @CpuInfo:
  29 #
  30 # Information about a virtual CPU
  31 #
  32 # @CPU: the index of the virtual CPU
  33 #
  34 # @current: this only exists for backwards compatibility and should be ignored
  35 #
  36 # @halted: true if the virtual CPU is in the halt state.  Halt usually refers
  37 #          to a processor specific low power mode.
  38 #
  39 # @qom_path: path to the CPU object in the QOM tree (since 2.4)
  40 #
  41 # @thread_id: ID of the underlying host thread
  42 #
  43 # @props: properties describing to which node/socket/core/thread
  44 #         virtual CPU belongs to, provided if supported by board (since 2.10)
  45 #
  46 # @arch: architecture of the cpu, which determines which additional fields
  47 #        will be listed (since 2.6)
  48 #
  49 # Since: 0.14.0
  50 #
  51 # Notes: @halted is a transient state that changes frequently.  By the time the
  52 #        data is sent to the client, the guest may no longer be halted.
  53 ##
  54 { 'union': 'CpuInfo',
  55   'base': {'CPU': 'int', 'current': 'bool', 'halted': 'bool',
  56            'qom_path': 'str', 'thread_id': 'int',
  57            '*props': 'CpuInstanceProperties', 'arch': 'CpuInfoArch' },
  58   'discriminator': 'arch',
  59   'data': { 'x86': 'CpuInfoX86',
  60             'sparc': 'CpuInfoSPARC',
  61             'ppc': 'CpuInfoPPC',
  62             'mips': 'CpuInfoMIPS',
  63             'tricore': 'CpuInfoTricore',
  64             's390': 'CpuInfoS390',
  65             'riscv': 'CpuInfoRISCV' } }
  66
  67 ##
  68 # @CpuInfoX86:
  69 #
  70 # Additional information about a virtual i386 or x86_64 CPU
  71 #
  72 # @pc: the 64-bit instruction pointer
  73 #
  74 # Since: 2.6
  75 ##
  76 { 'struct': 'CpuInfoX86', 'data': { 'pc': 'int' } }
  77
  78 ##
  79 # @CpuInfoSPARC:
  80 #
  81 # Additional information about a virtual SPARC CPU
  82 #
  83 # @pc: the PC component of the instruction pointer
  84 #
  85 # @npc: the NPC component of the instruction pointer
  86 #
  87 # Since: 2.6
  88 ##
  89 { 'struct': 'CpuInfoSPARC', 'data': { 'pc': 'int', 'npc': 'int' } }
  90
  91 ##
  92 # @CpuInfoPPC:
  93 #
  94 # Additional information about a virtual PPC CPU
  95 #
  96 # @nip: the instruction pointer
  97 #
  98 # Since: 2.6
  99 ##
 100 { 'struct': 'CpuInfoPPC', 'data': { 'nip': 'int' } }
 101
 102 ##
 103 # @CpuInfoMIPS:
 104 #
 105 # Additional information about a virtual MIPS CPU
 106 #
 107 # @PC: the instruction pointer
 108 #
 109 # Since: 2.6
 110 ##
 111 { 'struct': 'CpuInfoMIPS', 'data': { 'PC': 'int' } }
 112
 113 ##
 114 # @CpuInfoTricore:
 115 #
 116 # Additional information about a virtual Tricore CPU
 117 #
 118 # @PC: the instruction pointer
 119 #
 120 # Since: 2.6
 121 ##
 122 { 'struct': 'CpuInfoTricore', 'data': { 'PC': 'int' } }
 123
 124 ##
 125 # @CpuInfoRISCV:
 126 #
 127 # Additional information about a virtual RISCV CPU
 128 #
 129 # @pc: the instruction pointer
 130 #
 131 # Since 2.12
 132 ##
 133 { 'struct': 'CpuInfoRISCV', 'data': { 'pc': 'int' } }
 134
 135 ##
 136 # @CpuS390State:
 137 #
 138 # An enumeration of cpu states that can be assumed by a virtual
 139 # S390 CPU
 140 #
 141 # Since: 2.12
 142 ##
 143 { 'enum': 'CpuS390State',
 144   'prefix': 'S390_CPU_STATE',
 145   'data': [ 'uninitialized', 'stopped', 'check-stop', 'operating', 'load' ] }
 146
 147 ##
 148 # @CpuInfoS390:
 149 #
 150 # Additional information about a virtual S390 CPU
 151 #
 152 # @cpu-state: the virtual CPU's state
 153 #
 154 # Since: 2.12
 155 ##
 156 { 'struct': 'CpuInfoS390', 'data': { 'cpu-state': 'CpuS390State' } }
 157
 158 ##
 159 # @query-cpus:
 160 #
 161 # Returns a list of information about each virtual CPU.
 162 #
 163 # This command causes vCPU threads to exit to userspace, which causes
 164 # a small interruption to guest CPU execution. This will have a negative
 165 # impact on realtime guests and other latency sensitive guest workloads.
 166 # It is recommended to use @query-cpus-fast instead of this command to
 167 # avoid the vCPU interruption.
 168 #
 169 # Returns: a list of @CpuInfo for each virtual CPU
 170 #
 171 # Since: 0.14.0
 172 #
 173 # Example:
 174 #
 175 # -> { "execute": "query-cpus" }
 176 # <- { "return": [
 177 #          {
 178 #             "CPU":0,
 179 #             "current":true,
 180 #             "halted":false,
 181 #             "qom_path":"/machine/unattached/device[0]",
 182 #             "arch":"x86",
 183 #             "pc":3227107138,
 184 #             "thread_id":3134
 185 #          },
 186 #          {
 187 #             "CPU":1,
 188 #             "current":false,
 189 #             "halted":true,
 190 #             "qom_path":"/machine/unattached/device[2]",
 191 #             "arch":"x86",
 192 #             "pc":7108165,
 193 #             "thread_id":3135
 194 #          }
 195 #       ]
 196 #    }
 197 #
 198 # Notes: This interface is deprecated (since 2.12.0), and it is strongly
 199 #        recommended that you avoid using it. Use @query-cpus-fast to
 200 #        obtain information about virtual CPUs.
 201 #
 202 ##
 203 { 'command': 'query-cpus', 'returns': ['CpuInfo'] }
 204
 205 ##
 206 # @CpuInfoFast:
 207 #
 208 # Information about a virtual CPU
 209 #
 210 # @cpu-index: index of the virtual CPU
 211 #
 212 # @qom-path: path to the CPU object in the QOM tree
 213 #
 214 # @thread-id: ID of the underlying host thread
 215 #
 216 # @props: properties describing to which node/socket/core/thread
 217 #         virtual CPU belongs to, provided if supported by board
 218 #
 219 # @arch: base architecture of the cpu; deprecated since 3.0.0 in favor
 220 #        of @target
 221 #
 222 # @target: the QEMU system emulation target, which determines which
 223 #          additional fields will be listed (since 3.0)
 224 #
 225 # Since: 2.12
 226 #
 227 ##
 228 { 'union'         : 'CpuInfoFast',
 229   'base'          : { 'cpu-index'    : 'int',
 230                       'qom-path'     : 'str',
 231                       'thread-id'    : 'int',
 232                       '*props'       : 'CpuInstanceProperties',
 233                       'arch'         : 'CpuInfoArch',
 234                       'target'       : 'SysEmuTarget' },
 235   'discriminator' : 'target',
 236   'data'          : { 's390x'        : 'CpuInfoS390' } }
 237
 238 ##
 239 # @query-cpus-fast:
 240 #
 241 # Returns information about all virtual CPUs. This command does not
 242 # incur a performance penalty and should be used in production
 243 # instead of query-cpus.
 244 #
 245 # Returns: list of @CpuInfoFast
 246 #
 247 # Since: 2.12
 248 #
 249 # Example:
 250 #
 251 # -> { "execute": "query-cpus-fast" }
 252 # <- { "return": [
 253 #         {
 254 #             "thread-id": 25627,
 255 #             "props": {
 256 #                 "core-id": 0,
 257 #                 "thread-id": 0,
 258 #                 "socket-id": 0
 259 #             },
 260 #             "qom-path": "/machine/unattached/device[0]",
 261 #             "arch":"x86",
 262 #             "target":"x86_64",
 263 #             "cpu-index": 0
 264 #         },
 265 #         {
 266 #             "thread-id": 25628,
 267 #             "props": {
 268 #                 "core-id": 0,
 269 #                 "thread-id": 0,
 270 #                 "socket-id": 1
 271 #             },
 272 #             "qom-path": "/machine/unattached/device[2]",
 273 #             "arch":"x86",
 274 #             "target":"x86_64",
 275 #             "cpu-index": 1
 276 #         }
 277 #     ]
 278 # }
 279 ##
 280 { 'command': 'query-cpus-fast', 'returns': [ 'CpuInfoFast' ] }
 281
 282 ##
 283 # @cpu-add:
 284 #
 285 # Adds CPU with specified ID.
 286 #
 287 # @id: ID of CPU to be created, valid values [0..max_cpus)
 288 #
 289 # Returns: Nothing on success
 290 #
 291 # Since: 1.5
 292 #
 293 # Note: This command is deprecated.  The `device_add` command should be
 294 #       used instead.  See the `query-hotpluggable-cpus` command for
 295 #       details.
 296 #
 297 # Example:
 298 #
 299 # -> { "execute": "cpu-add", "arguments": { "id": 2 } }
 300 # <- { "return": {} }
 301 #
 302 ##
 303 { 'command': 'cpu-add', 'data': {'id': 'int'} }
 304
 305 ##
 306 # @MachineInfo:
 307 #
 308 # Information describing a machine.
 309 #
 310 # @name: the name of the machine
 311 #
 312 # @alias: an alias for the machine name
 313 #
 314 # @is-default: whether the machine is default
 315 #
 316 # @cpu-max: maximum number of CPUs supported by the machine type
 317 #           (since 1.5.0)
 318 #
 319 # @hotpluggable-cpus: cpu hotplug via -device is supported (since 2.7.0)
 320 #
 321 # @numa-mem-supported: true if '-numa node,mem' option is supported by
 322 #                      the machine type and false otherwise (since 4.1)
 323 #
 324 # @deprecated: if true, the machine type is deprecated and may be removed
 325 #              in future versions of QEMU according to the QEMU deprecation
 326 #              policy (since 4.1.0)
 327 #
 328 # Since: 1.2.0
 329 ##
 330 { 'struct': 'MachineInfo',
 331   'data': { 'name': 'str', '*alias': 'str',
 332             '*is-default': 'bool', 'cpu-max': 'int',
 333             'hotpluggable-cpus': 'bool',  'numa-mem-supported': 'bool',
 334             'deprecated': 'bool' } }
 335
 336 ##
 337 # @query-machines:
 338 #
 339 # Return a list of supported machines
 340 #
 341 # Returns: a list of MachineInfo
 342 #
 343 # Since: 1.2.0
 344 ##
 345 { 'command': 'query-machines', 'returns': ['MachineInfo'] }
 346
 347 ##
 348 # @CurrentMachineParams:
 349 #
 350 # Information describing the running machine parameters.
 351 #
 352 # @wakeup-suspend-support: true if the machine supports wake up from
 353 #                          suspend
 354 #
 355 # Since: 4.0
 356 ##
 357 { 'struct': 'CurrentMachineParams',
 358   'data': { 'wakeup-suspend-support': 'bool'} }
 359
 360 ##
 361 # @query-current-machine:
 362 #
 363 # Return information on the current virtual machine.
 364 #
 365 # Returns: CurrentMachineParams
 366 #
 367 # Since: 4.0
 368 ##
 369 { 'command': 'query-current-machine', 'returns': 'CurrentMachineParams' }
 370
 371 ##
 372 # @NumaOptionsType:
 373 #
 374 # @node: NUMA nodes configuration
 375 #
 376 # @dist: NUMA distance configuration (since 2.10)
 377 #
 378 # @cpu: property based CPU(s) to node mapping (Since: 2.10)
 379 #
 380 # Since: 2.1
 381 ##
 382 { 'enum': 'NumaOptionsType',
 383   'data': [ 'node', 'dist', 'cpu' ] }
 384
 385 ##
 386 # @NumaOptions:
 387 #
 388 # A discriminated record of NUMA options. (for OptsVisitor)
 389 #
 390 # Since: 2.1
 391 ##
 392 { 'union': 'NumaOptions',
 393   'base': { 'type': 'NumaOptionsType' },
 394   'discriminator': 'type',
 395   'data': {
 396     'node': 'NumaNodeOptions',
 397     'dist': 'NumaDistOptions',
 398     'cpu': 'NumaCpuOptions' }}
 399
 400 ##
 401 # @NumaNodeOptions:
 402 #
 403 # Create a guest NUMA node. (for OptsVisitor)
 404 #
 405 # @nodeid: NUMA node ID (increase by 1 from 0 if omitted)
 406 #
 407 # @cpus: VCPUs belonging to this node (assign VCPUS round-robin
 408 #         if omitted)
 409 #
 410 # @mem: memory size of this node; mutually exclusive with @memdev.
 411 #       Equally divide total memory among nodes if both @mem and @memdev are
 412 #       omitted.
 413 #
 414 # @memdev: memory backend object.  If specified for one node,
 415 #          it must be specified for all nodes.
 416 #
 417 # Since: 2.1
 418 ##
 419 { 'struct': 'NumaNodeOptions',
 420   'data': {
 421    '*nodeid': 'uint16',
 422    '*cpus':   ['uint16'],
 423    '*mem':    'size',
 424    '*memdev': 'str' }}
 425
 426 ##
 427 # @NumaDistOptions:
 428 #
 429 # Set the distance between 2 NUMA nodes.
 430 #
 431 # @src: source NUMA node.
 432 #
 433 # @dst: destination NUMA node.
 434 #
 435 # @val: NUMA distance from source node to destination node.
 436 #       When a node is unreachable from another node, set the distance
 437 #       between them to 255.
 438 #
 439 # Since: 2.10
 440 ##
 441 { 'struct': 'NumaDistOptions',
 442   'data': {
 443    'src': 'uint16',
 444    'dst': 'uint16',
 445    'val': 'uint8' }}
 446
 447 ##
 448 # @X86CPURegister32:
 449 #
 450 # A X86 32-bit register
 451 #
 452 # Since: 1.5
 453 ##
 454 { 'enum': 'X86CPURegister32',
 455   'data': [ 'EAX', 'EBX', 'ECX', 'EDX', 'ESP', 'EBP', 'ESI', 'EDI' ] }
 456
 457 ##
 458 # @X86CPUFeatureWordInfo:
 459 #
 460 # Information about a X86 CPU feature word
 461 #
 462 # @cpuid-input-eax: Input EAX value for CPUID instruction for that feature word
 463 #
 464 # @cpuid-input-ecx: Input ECX value for CPUID instruction for that
 465 #                   feature word
 466 #
 467 # @cpuid-register: Output register containing the feature bits
 468 #
 469 # @features: value of output register, containing the feature bits
 470 #
 471 # Since: 1.5
 472 ##
 473 { 'struct': 'X86CPUFeatureWordInfo',
 474   'data': { 'cpuid-input-eax': 'int',
 475             '*cpuid-input-ecx': 'int',
 476             'cpuid-register': 'X86CPURegister32',
 477             'features': 'int' } }
 478
 479 ##
 480 # @DummyForceArrays:
 481 #
 482 # Not used by QMP; hack to let us use X86CPUFeatureWordInfoList internally
 483 #
 484 # Since: 2.5
 485 ##
 486 { 'struct': 'DummyForceArrays',
 487   'data': { 'unused': ['X86CPUFeatureWordInfo'] } }
 488
 489 ##
 490 # @NumaCpuOptions:
 491 #
 492 # Option "-numa cpu" overrides default cpu to node mapping.
 493 # It accepts the same set of cpu properties as returned by
 494 # query-hotpluggable-cpus[].props, where node-id could be used to
 495 # override default node mapping.
 496 #
 497 # Since: 2.10
 498 ##
 499 { 'struct': 'NumaCpuOptions',
 500    'base': 'CpuInstanceProperties',
 501    'data' : {} }
 502
 503 ##
 504 # @HostMemPolicy:
 505 #
 506 # Host memory policy types
 507 #
 508 # @default: restore default policy, remove any nondefault policy
 509 #
 510 # @preferred: set the preferred host nodes for allocation
 511 #
 512 # @bind: a strict policy that restricts memory allocation to the
 513 #        host nodes specified
 514 #
 515 # @interleave: memory allocations are interleaved across the set
 516 #              of host nodes specified
 517 #
 518 # Since: 2.1
 519 ##
 520 { 'enum': 'HostMemPolicy',
 521   'data': [ 'default', 'preferred', 'bind', 'interleave' ] }
 522
 523 ##
 524 # @Memdev:
 525 #
 526 # Information about memory backend
 527 #
 528 # @id: backend's ID if backend has 'id' property (since 2.9)
 529 #
 530 # @size: memory backend size
 531 #
 532 # @merge: enables or disables memory merge support
 533 #
 534 # @dump: includes memory backend's memory in a core dump or not
 535 #
 536 # @prealloc: enables or disables memory preallocation
 537 #
 538 # @host-nodes: host nodes for its memory policy
 539 #
 540 # @policy: memory policy of memory backend
 541 #
 542 # Since: 2.1
 543 ##
 544 { 'struct': 'Memdev',
 545   'data': {
 546     '*id':        'str',
 547     'size':       'size',
 548     'merge':      'bool',
 549     'dump':       'bool',
 550     'prealloc':   'bool',
 551     'host-nodes': ['uint16'],
 552     'policy':     'HostMemPolicy' }}
 553
 554 ##
 555 # @query-memdev:
 556 #
 557 # Returns information for all memory backends.
 558 #
 559 # Returns: a list of @Memdev.
 560 #
 561 # Since: 2.1
 562 #
 563 # Example:
 564 #
 565 # -> { "execute": "query-memdev" }
 566 # <- { "return": [
 567 #        {
 568 #          "id": "mem1",
 569 #          "size": 536870912,
 570 #          "merge": false,
 571 #          "dump": true,
 572 #          "prealloc": false,
 573 #          "host-nodes": [0, 1],
 574 #          "policy": "bind"
 575 #        },
 576 #        {
 577 #          "size": 536870912,
 578 #          "merge": false,
 579 #          "dump": true,
 580 #          "prealloc": true,
 581 #          "host-nodes": [2, 3],
 582 #          "policy": "preferred"
 583 #        }
 584 #      ]
 585 #    }
 586 #
 587 ##
 588 { 'command': 'query-memdev', 'returns': ['Memdev'], 'allow-preconfig': true }
 589
 590 ##
 591 # @CpuInstanceProperties:
 592 #
 593 # List of properties to be used for hotplugging a CPU instance,
 594 # it should be passed by management with device_add command when
 595 # a CPU is being hotplugged.
 596 #
 597 # @node-id: NUMA node ID the CPU belongs to
 598 # @socket-id: socket number within node/board the CPU belongs to
 599 # @die-id: die number within node/board the CPU belongs to (Since 4.1)
 600 # @core-id: core number within die the CPU belongs to# @thread-id: thread number within core the CPU belongs to
 601 #
 602 # Note: currently there are 5 properties that could be present
 603 # but management should be prepared to pass through other
 604 # properties with device_add command to allow for future
 605 # interface extension. This also requires the filed names to be kept in
 606 # sync with the properties passed to -device/device_add.
 607 #
 608 # Since: 2.7
 609 ##
 610 { 'struct': 'CpuInstanceProperties',
 611   'data': { '*node-id': 'int',
 612             '*socket-id': 'int',
 613             '*die-id': 'int',
 614             '*core-id': 'int',
 615             '*thread-id': 'int'
 616   }
 617 }
 618
 619 ##
 620 # @HotpluggableCPU:
 621 #
 622 # @type: CPU object type for usage with device_add command
 623 # @props: list of properties to be used for hotplugging CPU
 624 # @vcpus-count: number of logical VCPU threads @HotpluggableCPU provides
 625 # @qom-path: link to existing CPU object if CPU is present or
 626 #            omitted if CPU is not present.
 627 #
 628 # Since: 2.7
 629 ##
 630 { 'struct': 'HotpluggableCPU',
 631   'data': { 'type': 'str',
 632             'vcpus-count': 'int',
 633             'props': 'CpuInstanceProperties',
 634             '*qom-path': 'str'
 635           }
 636 }
 637
 638 ##
 639 # @query-hotpluggable-cpus:
 640 #
 641 # TODO: Better documentation; currently there is none.
 642 #
 643 # Returns: a list of HotpluggableCPU objects.
 644 #
 645 # Since: 2.7
 646 #
 647 # Example:
 648 #
 649 # For pseries machine type started with -smp 2,cores=2,maxcpus=4 -cpu POWER8:
 650 #
 651 # -> { "execute": "query-hotpluggable-cpus" }
 652 # <- {"return": [
 653 #      { "props": { "core": 8 }, "type": "POWER8-spapr-cpu-core",
 654 #        "vcpus-count": 1 },
 655 #      { "props": { "core": 0 }, "type": "POWER8-spapr-cpu-core",
 656 #        "vcpus-count": 1, "qom-path": "/machine/unattached/device[0]"}
 657 #    ]}'
 658 #
 659 # For pc machine type started with -smp 1,maxcpus=2:
 660 #
 661 # -> { "execute": "query-hotpluggable-cpus" }
 662 # <- {"return": [
 663 #      {
 664 #         "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
 665 #         "props": {"core-id": 0, "socket-id": 1, "thread-id": 0}
 666 #      },
 667 #      {
 668 #         "qom-path": "/machine/unattached/device[0]",
 669 #         "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
 670 #         "props": {"core-id": 0, "socket-id": 0, "thread-id": 0}
 671 #      }
 672 #    ]}
 673 #
 674 # For s390x-virtio-ccw machine type started with -smp 1,maxcpus=2 -cpu qemu
 675 # (Since: 2.11):
 676 #
 677 # -> { "execute": "query-hotpluggable-cpus" }
 678 # <- {"return": [
 679 #      {
 680 #         "type": "qemu-s390x-cpu", "vcpus-count": 1,
 681 #         "props": { "core-id": 1 }
 682 #      },
 683 #      {
 684 #         "qom-path": "/machine/unattached/device[0]",
 685 #         "type": "qemu-s390x-cpu", "vcpus-count": 1,
 686 #         "props": { "core-id": 0 }
 687 #      }
 688 #    ]}
 689 #
 690 ##
 691 { 'command': 'query-hotpluggable-cpus', 'returns': ['HotpluggableCPU'],
 692              'allow-preconfig': true }
 693
 694 ##
 695 # @set-numa-node:
 696 #
 697 # Runtime equivalent of '-numa' CLI option, available at
 698 # preconfigure stage to configure numa mapping before initializing
 699 # machine.
 700 #
 701 # Since 3.0
 702 ##
 703 { 'command': 'set-numa-node', 'boxed': true,
 704   'data': 'NumaOptions',
 705   'allow-preconfig': true
 706 }