hmp-commands.hx

   1 HXCOMM Use DEFHEADING() to define headings in both help text and rST.
   2 HXCOMM Text between SRST and ERST is copied to the rST version and
   3 HXCOMM discarded from C version.
   4 HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
   5 HXCOMM monitor commands
   6 HXCOMM HXCOMM can be used for comments, discarded from both rST and C.
   7
   8
   9     {
  10         .name       = "help|?",
  11         .args_type  = "name:S?",
  12         .params     = "[cmd]",
  13         .help       = "show the help",
  14         .cmd        = do_help_cmd,
  15         .flags      = "p",
  16     },
  17
  18 SRST
  19 ``help`` or ``?`` [*cmd*]
  20   Show the help for all commands or just for command *cmd*.
  21 ERST
  22
  23     {
  24         .name       = "commit",
  25         .args_type  = "device:B",
  26         .params     = "device|all",
  27         .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
  28         .cmd        = hmp_commit,
  29     },
  30
  31 SRST
  32 ``commit``
  33   Commit changes to the disk images (if -snapshot is used) or backing files.
  34   If the backing file is smaller than the snapshot, then the backing file
  35   will be resized to be the same size as the snapshot.  If the snapshot is
  36   smaller than the backing file, the backing file will not be truncated.
  37   If you want the backing file to match the size of the smaller snapshot,
  38   you can safely truncate it yourself once the commit operation successfully
  39   completes.
  40 ERST
  41
  42     {
  43         .name       = "quit|q",
  44         .args_type  = "",
  45         .params     = "",
  46         .help       = "quit the emulator",
  47         .cmd        = hmp_quit,
  48         .flags      = "p",
  49     },
  50
  51 SRST
  52 ``quit`` or ``q``
  53   Quit the emulator.
  54 ERST
  55
  56     {
  57         .name       = "exit_preconfig",
  58         .args_type  = "",
  59         .params     = "",
  60         .help       = "exit the preconfig state",
  61         .cmd        = hmp_exit_preconfig,
  62         .flags      = "p",
  63     },
  64
  65 SRST
  66 ``exit_preconfig``
  67   This command makes QEMU exit the preconfig state and proceed with
  68   VM initialization using configuration data provided on the command line
  69   and via the QMP monitor during the preconfig state. The command is only
  70   available during the preconfig state (i.e. when the --preconfig command
  71   line option was in use).
  72 ERST
  73
  74     {
  75         .name       = "block_resize",
  76         .args_type  = "device:B,size:o",
  77         .params     = "device size",
  78         .help       = "resize a block image",
  79         .cmd        = hmp_block_resize,
  80         .coroutine  = true,
  81     },
  82
  83 SRST
  84 ``block_resize``
  85   Resize a block image while a guest is running.  Usually requires guest
  86   action to see the updated size.  Resize to a lower size is supported,
  87   but should be used with extreme caution.  Note that this command only
  88   resizes image files, it can not resize block devices like LVM volumes.
  89 ERST
  90
  91     {
  92         .name       = "block_stream",
  93         .args_type  = "device:B,speed:o?,base:s?",
  94         .params     = "device [speed [base]]",
  95         .help       = "copy data from a backing file into a block device",
  96         .cmd        = hmp_block_stream,
  97     },
  98
  99 SRST
 100 ``block_stream``
 101   Copy data from a backing file into a block device.
 102 ERST
 103
 104     {
 105         .name       = "block_job_set_speed",
 106         .args_type  = "device:B,speed:o",
 107         .params     = "device speed",
 108         .help       = "set maximum speed for a background block operation",
 109         .cmd        = hmp_block_job_set_speed,
 110     },
 111
 112 SRST
 113 ``block_job_set_speed``
 114   Set maximum speed for a background block operation.
 115 ERST
 116
 117     {
 118         .name       = "block_job_cancel",
 119         .args_type  = "force:-f,device:B",
 120         .params     = "[-f] device",
 121         .help       = "stop an active background block operation (use -f"
 122                       "\n\t\t\t if you want to abort the operation immediately"
 123                       "\n\t\t\t instead of keep running until data is in sync)",
 124         .cmd        = hmp_block_job_cancel,
 125     },
 126
 127 SRST
 128 ``block_job_cancel``
 129   Stop an active background block operation (streaming, mirroring).
 130 ERST
 131
 132     {
 133         .name       = "block_job_complete",
 134         .args_type  = "device:B",
 135         .params     = "device",
 136         .help       = "stop an active background block operation",
 137         .cmd        = hmp_block_job_complete,
 138     },
 139
 140 SRST
 141 ``block_job_complete``
 142   Manually trigger completion of an active background block operation.
 143   For mirroring, this will switch the device to the destination path.
 144 ERST
 145
 146     {
 147         .name       = "block_job_pause",
 148         .args_type  = "device:B",
 149         .params     = "device",
 150         .help       = "pause an active background block operation",
 151         .cmd        = hmp_block_job_pause,
 152     },
 153
 154 SRST
 155 ``block_job_pause``
 156   Pause an active block streaming operation.
 157 ERST
 158
 159     {
 160         .name       = "block_job_resume",
 161         .args_type  = "device:B",
 162         .params     = "device",
 163         .help       = "resume a paused background block operation",
 164         .cmd        = hmp_block_job_resume,
 165     },
 166
 167 SRST
 168 ``block_job_resume``
 169   Resume a paused block streaming operation.
 170 ERST
 171
 172     {
 173         .name       = "eject",
 174         .args_type  = "force:-f,device:B",
 175         .params     = "[-f] device",
 176         .help       = "eject a removable medium (use -f to force it)",
 177         .cmd        = hmp_eject,
 178     },
 179
 180 SRST
 181 ``eject [-f]`` *device*
 182   Eject a removable medium (use -f to force it).
 183 ERST
 184
 185     {
 186         .name       = "drive_del",
 187         .args_type  = "id:B",
 188         .params     = "device",
 189         .help       = "remove host block device",
 190         .cmd        = hmp_drive_del,
 191     },
 192
 193 SRST
 194 ``drive_del`` *device*
 195   Remove host block device.  The result is that guest generated IO is no longer
 196   submitted against the host device underlying the disk.  Once a drive has
 197   been deleted, the QEMU Block layer returns -EIO which results in IO
 198   errors in the guest for applications that are reading/writing to the device.
 199   These errors are always reported to the guest, regardless of the drive's error
 200   actions (drive options rerror, werror).
 201 ERST
 202
 203     {
 204         .name       = "change",
 205         .args_type  = "device:B,force:-f,target:F,arg:s?,read-only-mode:s?",
 206         .params     = "device [-f] filename [format [read-only-mode]]",
 207         .help       = "change a removable medium, optional format, use -f to force the operation",
 208         .cmd        = hmp_change,
 209     },
 210
 211 SRST
 212 ``change`` *device* *setting*
 213   Change the configuration of a device.
 214
 215   ``change`` *diskdevice* [-f] *filename* [*format* [*read-only-mode*]]
 216     Change the medium for a removable disk device to point to *filename*. eg::
 217
 218       (qemu) change ide1-cd0 /path/to/some.iso
 219
 220     ``-f``
 221       forces the operation even if the guest has locked the tray.
 222
 223     *format* is optional.
 224
 225     *read-only-mode* may be used to change the read-only status of the device.
 226     It accepts the following values:
 227
 228     retain
 229       Retains the current status; this is the default.
 230
 231     read-only
 232       Makes the device read-only.
 233
 234     read-write
 235       Makes the device writable.
 236
 237   ``change vnc password`` [*password*]
 238
 239     Change the password associated with the VNC server. If the new password
 240     is not supplied, the monitor will prompt for it to be entered. VNC
 241     passwords are only significant up to 8 letters. eg::
 242
 243       (qemu) change vnc password
 244       Password: ********
 245
 246 ERST
 247
 248     {
 249         .name       = "screendump",
 250         .args_type  = "filename:F,format:-fs,device:s?,head:i?",
 251         .params     = "filename [-f format] [device [head]]",
 252         .help       = "save screen from head 'head' of display device 'device'"
 253                       "in specified format 'format' as image 'filename'."
 254                       "Currently only 'png' and 'ppm' formats are supported.",
 255          .cmd        = hmp_screendump,
 256         .coroutine  = true,
 257     },
 258
 259 SRST
 260 ``screendump`` *filename*
 261   Save screen into PPM image *filename*.
 262 ERST
 263
 264     {
 265         .name       = "logfile",
 266         .args_type  = "filename:F",
 267         .params     = "filename",
 268         .help       = "output logs to 'filename'",
 269         .cmd        = hmp_logfile,
 270     },
 271
 272 SRST
 273 ``logfile`` *filename*
 274   Output logs to *filename*.
 275 ERST
 276
 277     {
 278         .name       = "trace-event",
 279         .args_type  = "name:s,option:b,vcpu:i?",
 280         .params     = "name on|off [vcpu]",
 281         .help       = "changes status of a specific trace event "
 282                       "(vcpu: vCPU to set, default is all)",
 283         .cmd = hmp_trace_event,
 284         .command_completion = trace_event_completion,
 285     },
 286
 287 SRST
 288 ``trace-event``
 289   changes status of a trace event
 290 ERST
 291
 292 #if defined(CONFIG_TRACE_SIMPLE)
 293     {
 294         .name       = "trace-file",
 295         .args_type  = "op:s?,arg:F?",
 296         .params     = "on|off|flush|set [arg]",
 297         .help       = "open, close, or flush trace file, or set a new file name",
 298         .cmd        = hmp_trace_file,
 299     },
 300
 301 SRST
 302 ``trace-file on|off|flush``
 303   Open, close, or flush the trace file.  If no argument is given, the
 304   status of the trace file is displayed.
 305 ERST
 306 #endif
 307
 308     {
 309         .name       = "log",
 310         .args_type  = "items:s",
 311         .params     = "item1[,...]",
 312         .help       = "activate logging of the specified items",
 313         .cmd        = hmp_log,
 314     },
 315
 316 SRST
 317 ``log`` *item1*\ [,...]
 318   Activate logging of the specified items.
 319 ERST
 320
 321     {
 322         .name       = "savevm",
 323         .args_type  = "name:s?",
 324         .params     = "tag",
 325         .help       = "save a VM snapshot. If no tag is provided, a new snapshot is created",
 326         .cmd        = hmp_savevm,
 327     },
 328
 329 SRST
 330 ``savevm`` *tag*
 331   Create a snapshot of the whole virtual machine. If *tag* is
 332   provided, it is used as human readable identifier. If there is already
 333   a snapshot with the same tag, it is replaced. More info at
 334   :ref:`vm_005fsnapshots`.
 335
 336   Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
 337   only *tag* as parameter.
 338 ERST
 339
 340     {
 341         .name       = "loadvm",
 342         .args_type  = "name:s",
 343         .params     = "tag",
 344         .help       = "restore a VM snapshot from its tag",
 345         .cmd        = hmp_loadvm,
 346         .command_completion = loadvm_completion,
 347     },
 348
 349 SRST
 350 ``loadvm`` *tag*
 351   Set the whole virtual machine to the snapshot identified by the tag
 352   *tag*.
 353
 354   Since 4.0, loadvm stopped accepting snapshot id as parameter.
 355 ERST
 356
 357     {
 358         .name       = "delvm",
 359         .args_type  = "name:s",
 360         .params     = "tag",
 361         .help       = "delete a VM snapshot from its tag",
 362         .cmd        = hmp_delvm,
 363         .command_completion = delvm_completion,
 364     },
 365
 366 SRST
 367 ``delvm`` *tag*
 368   Delete the snapshot identified by *tag*.
 369
 370   Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
 371   only *tag* as parameter.
 372 ERST
 373
 374     {
 375         .name       = "singlestep",
 376         .args_type  = "option:s?",
 377         .params     = "[on|off]",
 378         .help       = "run emulation in singlestep mode or switch to normal mode",
 379         .cmd        = hmp_singlestep,
 380     },
 381
 382 SRST
 383 ``singlestep [off]``
 384   Run the emulation in single step mode.
 385   If called with option off, the emulation returns to normal mode.
 386 ERST
 387
 388     {
 389         .name       = "stop|s",
 390         .args_type  = "",
 391         .params     = "",
 392         .help       = "stop emulation",
 393         .cmd        = hmp_stop,
 394     },
 395
 396 SRST
 397 ``stop`` or ``s``
 398   Stop emulation.
 399 ERST
 400
 401     {
 402         .name       = "cont|c",
 403         .args_type  = "",
 404         .params     = "",
 405         .help       = "resume emulation",
 406         .cmd        = hmp_cont,
 407     },
 408
 409 SRST
 410 ``cont`` or ``c``
 411   Resume emulation.
 412 ERST
 413
 414     {
 415         .name       = "system_wakeup",
 416         .args_type  = "",
 417         .params     = "",
 418         .help       = "wakeup guest from suspend",
 419         .cmd        = hmp_system_wakeup,
 420     },
 421
 422 SRST
 423 ``system_wakeup``
 424   Wakeup guest from suspend.
 425 ERST
 426
 427     {
 428         .name       = "gdbserver",
 429         .args_type  = "device:s?",
 430         .params     = "[device]",
 431         .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
 432         .cmd        = hmp_gdbserver,
 433     },
 434
 435 SRST
 436 ``gdbserver`` [*port*]
 437   Start gdbserver session (default *port*\=1234)
 438 ERST
 439
 440     {
 441         .name       = "x",
 442         .args_type  = "fmt:/,addr:l",
 443         .params     = "/fmt addr",
 444         .help       = "virtual memory dump starting at 'addr'",
 445         .cmd        = hmp_memory_dump,
 446     },
 447
 448 SRST
 449 ``x/``\ *fmt* *addr*
 450   Virtual memory dump starting at *addr*.
 451 ERST
 452
 453     {
 454         .name       = "xp",
 455         .args_type  = "fmt:/,addr:l",
 456         .params     = "/fmt addr",
 457         .help       = "physical memory dump starting at 'addr'",
 458         .cmd        = hmp_physical_memory_dump,
 459     },
 460
 461 SRST
 462 ``xp /``\ *fmt* *addr*
 463   Physical memory dump starting at *addr*.
 464
 465   *fmt* is a format which tells the command how to format the
 466   data. Its syntax is: ``/{count}{format}{size}``
 467
 468   *count*
 469     is the number of items to be dumped.
 470   *format*
 471     can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
 472     c (char) or i (asm instruction).
 473   *size*
 474     can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
 475     ``h`` or ``w`` can be specified with the ``i`` format to
 476     respectively select 16 or 32 bit code instruction size.
 477
 478   Examples:
 479
 480   Dump 10 instructions at the current instruction pointer::
 481
 482     (qemu) x/10i $eip
 483     0x90107063:  ret
 484     0x90107064:  sti
 485     0x90107065:  lea    0x0(%esi,1),%esi
 486     0x90107069:  lea    0x0(%edi,1),%edi
 487     0x90107070:  ret
 488     0x90107071:  jmp    0x90107080
 489     0x90107073:  nop
 490     0x90107074:  nop
 491     0x90107075:  nop
 492     0x90107076:  nop
 493
 494   Dump 80 16 bit values at the start of the video memory::
 495
 496     (qemu) xp/80hx 0xb8000
 497     0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
 498     0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
 499     0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
 500     0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
 501     0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
 502     0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
 503     0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 504     0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 505     0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 506     0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 507
 508 ERST
 509
 510     {
 511         .name       = "gpa2hva",
 512         .args_type  = "addr:l",
 513         .params     = "addr",
 514         .help       = "print the host virtual address corresponding to a guest physical address",
 515         .cmd        = hmp_gpa2hva,
 516     },
 517
 518 SRST
 519 ``gpa2hva`` *addr*
 520   Print the host virtual address at which the guest's physical address *addr*
 521   is mapped.
 522 ERST
 523
 524 #ifdef CONFIG_LINUX
 525     {
 526         .name       = "gpa2hpa",
 527         .args_type  = "addr:l",
 528         .params     = "addr",
 529         .help       = "print the host physical address corresponding to a guest physical address",
 530         .cmd        = hmp_gpa2hpa,
 531     },
 532 #endif
 533
 534 SRST
 535 ``gpa2hpa`` *addr*
 536   Print the host physical address at which the guest's physical address *addr*
 537   is mapped.
 538 ERST
 539
 540     {
 541         .name       = "gva2gpa",
 542         .args_type  = "addr:l",
 543         .params     = "addr",
 544         .help       = "print the guest physical address corresponding to a guest virtual address",
 545         .cmd        = hmp_gva2gpa,
 546     },
 547
 548 SRST
 549 ``gva2gpa`` *addr*
 550   Print the guest physical address at which the guest's virtual address *addr*
 551   is mapped based on the mapping for the current CPU.
 552 ERST
 553
 554     {
 555         .name       = "print|p",
 556         .args_type  = "fmt:/,val:l",
 557         .params     = "/fmt expr",
 558         .help       = "print expression value (use $reg for CPU register access)",
 559         .cmd        = do_print,
 560     },
 561
 562 SRST
 563 ``print`` or ``p/``\ *fmt* *expr*
 564   Print expression value. Only the *format* part of *fmt* is
 565   used.
 566 ERST
 567
 568     {
 569         .name       = "i",
 570         .args_type  = "fmt:/,addr:i,index:i.",
 571         .params     = "/fmt addr",
 572         .help       = "I/O port read",
 573         .cmd        = hmp_ioport_read,
 574     },
 575
 576 SRST
 577 ``i/``\ *fmt* *addr* [.\ *index*\ ]
 578   Read I/O port.
 579 ERST
 580
 581     {
 582         .name       = "o",
 583         .args_type  = "fmt:/,addr:i,val:i",
 584         .params     = "/fmt addr value",
 585         .help       = "I/O port write",
 586         .cmd        = hmp_ioport_write,
 587     },
 588
 589 SRST
 590 ``o/``\ *fmt* *addr* *val*
 591   Write to I/O port.
 592 ERST
 593
 594     {
 595         .name       = "sendkey",
 596         .args_type  = "keys:s,hold-time:i?",
 597         .params     = "keys [hold_ms]",
 598         .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
 599         .cmd        = hmp_sendkey,
 600         .command_completion = sendkey_completion,
 601     },
 602
 603 SRST
 604 ``sendkey`` *keys*
 605   Send *keys* to the guest. *keys* could be the name of the
 606   key or the raw value in hexadecimal format. Use ``-`` to press
 607   several keys simultaneously. Example::
 608
 609     sendkey ctrl-alt-f1
 610
 611   This command is useful to send keys that your graphical user interface
 612   intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
 613 ERST
 614     {
 615         .name       = "sync-profile",
 616         .args_type  = "op:s?",
 617         .params     = "[on|off|reset]",
 618         .help       = "enable, disable or reset synchronization profiling. "
 619                       "With no arguments, prints whether profiling is on or off.",
 620         .cmd        = hmp_sync_profile,
 621     },
 622
 623 SRST
 624 ``sync-profile [on|off|reset]``
 625   Enable, disable or reset synchronization profiling. With no arguments, prints
 626   whether profiling is on or off.
 627 ERST
 628
 629     {
 630         .name       = "system_reset",
 631         .args_type  = "",
 632         .params     = "",
 633         .help       = "reset the system",
 634         .cmd        = hmp_system_reset,
 635     },
 636
 637 SRST
 638 ``system_reset``
 639   Reset the system.
 640 ERST
 641
 642     {
 643         .name       = "system_powerdown",
 644         .args_type  = "",
 645         .params     = "",
 646         .help       = "send system power down event",
 647         .cmd        = hmp_system_powerdown,
 648     },
 649
 650 SRST
 651 ``system_powerdown``
 652   Power down the system (if supported).
 653 ERST
 654
 655     {
 656         .name       = "sum",
 657         .args_type  = "start:i,size:i",
 658         .params     = "addr size",
 659         .help       = "compute the checksum of a memory region",
 660         .cmd        = hmp_sum,
 661     },
 662
 663 SRST
 664 ``sum`` *addr* *size*
 665   Compute the checksum of a memory region.
 666 ERST
 667
 668     {
 669         .name       = "device_add",
 670         .args_type  = "device:O",
 671         .params     = "driver[,prop=value][,...]",
 672         .help       = "add device, like -device on the command line",
 673         .cmd        = hmp_device_add,
 674         .command_completion = device_add_completion,
 675     },
 676
 677 SRST
 678 ``device_add`` *config*
 679   Add device.
 680 ERST
 681
 682     {
 683         .name       = "device_del",
 684         .args_type  = "id:s",
 685         .params     = "device",
 686         .help       = "remove device",
 687         .cmd        = hmp_device_del,
 688         .command_completion = device_del_completion,
 689     },
 690
 691 SRST
 692 ``device_del`` *id*
 693   Remove device *id*. *id* may be a short ID
 694   or a QOM object path.
 695 ERST
 696
 697     {
 698         .name       = "cpu",
 699         .args_type  = "index:i",
 700         .params     = "index",
 701         .help       = "set the default CPU",
 702         .cmd        = hmp_cpu,
 703     },
 704
 705 SRST
 706 ``cpu`` *index*
 707   Set the default CPU.
 708 ERST
 709
 710     {
 711         .name       = "mouse_move",
 712         .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
 713         .params     = "dx dy [dz]",
 714         .help       = "send mouse move events",
 715         .cmd        = hmp_mouse_move,
 716     },
 717
 718 SRST
 719 ``mouse_move`` *dx* *dy* [*dz*]
 720   Move the active mouse to the specified coordinates *dx* *dy*
 721   with optional scroll axis *dz*.
 722 ERST
 723
 724     {
 725         .name       = "mouse_button",
 726         .args_type  = "button_state:i",
 727         .params     = "state",
 728         .help       = "change mouse button state (1=L, 2=M, 4=R)",
 729         .cmd        = hmp_mouse_button,
 730     },
 731
 732 SRST
 733 ``mouse_button`` *val*
 734   Change the active mouse button state *val* (1=L, 2=M, 4=R).
 735 ERST
 736
 737     {
 738         .name       = "mouse_set",
 739         .args_type  = "index:i",
 740         .params     = "index",
 741         .help       = "set which mouse device receives events",
 742         .cmd        = hmp_mouse_set,
 743     },
 744
 745 SRST
 746 ``mouse_set`` *index*
 747   Set which mouse device receives events at given *index*, index
 748   can be obtained with::
 749
 750     info mice
 751
 752 ERST
 753
 754     {
 755         .name       = "wavcapture",
 756         .args_type  = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
 757         .params     = "path audiodev [frequency [bits [channels]]]",
 758         .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
 759         .cmd        = hmp_wavcapture,
 760     },
 761 SRST
 762 ``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
 763   Capture audio into *filename* from *audiodev*, using sample rate
 764   *frequency* bits per sample *bits* and number of channels
 765   *channels*.
 766
 767   Defaults:
 768
 769   - Sample rate = 44100 Hz - CD quality
 770   - Bits = 16
 771   - Number of channels = 2 - Stereo
 772 ERST
 773
 774     {
 775         .name       = "stopcapture",
 776         .args_type  = "n:i",
 777         .params     = "capture index",
 778         .help       = "stop capture",
 779         .cmd        = hmp_stopcapture,
 780     },
 781 SRST
 782 ``stopcapture`` *index*
 783   Stop capture with a given *index*, index can be obtained with::
 784
 785     info capture
 786
 787 ERST
 788
 789     {
 790         .name       = "memsave",
 791         .args_type  = "val:l,size:i,filename:s",
 792         .params     = "addr size file",
 793         .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
 794         .cmd        = hmp_memsave,
 795     },
 796
 797 SRST
 798 ``memsave`` *addr* *size* *file*
 799   save to disk virtual memory dump starting at *addr* of size *size*.
 800 ERST
 801
 802     {
 803         .name       = "pmemsave",
 804         .args_type  = "val:l,size:i,filename:s",
 805         .params     = "addr size file",
 806         .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
 807         .cmd        = hmp_pmemsave,
 808     },
 809
 810 SRST
 811 ``pmemsave`` *addr* *size* *file*
 812   save to disk physical memory dump starting at *addr* of size *size*.
 813 ERST
 814
 815     {
 816         .name       = "boot_set",
 817         .args_type  = "bootdevice:s",
 818         .params     = "bootdevice",
 819         .help       = "define new values for the boot device list",
 820         .cmd        = hmp_boot_set,
 821     },
 822
 823 SRST
 824 ``boot_set`` *bootdevicelist*
 825   Define new values for the boot device list. Those values will override
 826   the values specified on the command line through the ``-boot`` option.
 827
 828   The values that can be specified here depend on the machine type, but are
 829   the same that can be specified in the ``-boot`` command line option.
 830 ERST
 831
 832     {
 833         .name       = "nmi",
 834         .args_type  = "",
 835         .params     = "",
 836         .help       = "inject an NMI",
 837         .cmd        = hmp_nmi,
 838     },
 839 SRST
 840 ``nmi`` *cpu*
 841   Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
 842 ERST
 843
 844     {
 845         .name       = "ringbuf_write",
 846         .args_type  = "device:s,data:s",
 847         .params     = "device data",
 848         .help       = "Write to a ring buffer character device",
 849         .cmd        = hmp_ringbuf_write,
 850         .command_completion = ringbuf_write_completion,
 851     },
 852
 853 SRST
 854 ``ringbuf_write`` *device* *data*
 855   Write *data* to ring buffer character device *device*.
 856   *data* must be a UTF-8 string.
 857 ERST
 858
 859     {
 860         .name       = "ringbuf_read",
 861         .args_type  = "device:s,size:i",
 862         .params     = "device size",
 863         .help       = "Read from a ring buffer character device",
 864         .cmd        = hmp_ringbuf_read,
 865         .command_completion = ringbuf_write_completion,
 866     },
 867
 868 SRST
 869 ``ringbuf_read`` *device*
 870   Read and print up to *size* bytes from ring buffer character
 871   device *device*.
 872   Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
 873   character code in hexadecimal.  Character ``\`` is printed ``\\``.
 874   Bug: can screw up when the buffer contains invalid UTF-8 sequences,
 875   NUL characters, after the ring buffer lost data, and when reading
 876   stops because the size limit is reached.
 877 ERST
 878
 879     {
 880         .name       = "announce_self",
 881         .args_type  = "interfaces:s?,id:s?",
 882         .params     = "[interfaces] [id]",
 883         .help       = "Trigger GARP/RARP announcements",
 884         .cmd        = hmp_announce_self,
 885     },
 886
 887 SRST
 888 ``announce_self``
 889   Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
 890   updating the network infrastructure after a reconfiguration or some forms
 891   of migration. The timings of the round are set by the migration announce
 892   parameters. An optional comma separated *interfaces* list restricts the
 893   announce to the named set of interfaces. An optional *id* can be used to
 894   start a separate announce timer and to change the parameters of it later.
 895 ERST
 896
 897     {
 898         .name       = "migrate",
 899         .args_type  = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
 900         .params     = "[-d] [-b] [-i] [-r] uri",
 901         .help       = "migrate to URI (using -d to not wait for completion)"
 902                       "\n\t\t\t -b for migration without shared storage with"
 903                       " full copy of disk\n\t\t\t -i for migration without "
 904                       "shared storage with incremental copy of disk "
 905                       "(base image shared between src and destination)"
 906                       "\n\t\t\t -r to resume a paused migration",
 907         .cmd        = hmp_migrate,
 908     },
 909
 910
 911 SRST
 912 ``migrate [-d] [-b] [-i]`` *uri*
 913   Migrate to *uri* (using -d to not wait for completion).
 914
 915   ``-b``
 916     for migration with full copy of disk
 917   ``-i``
 918     for migration with incremental copy of disk (base image is shared)
 919 ERST
 920
 921     {
 922         .name       = "migrate_cancel",
 923         .args_type  = "",
 924         .params     = "",
 925         .help       = "cancel the current VM migration",
 926         .cmd        = hmp_migrate_cancel,
 927     },
 928
 929 SRST
 930 ``migrate_cancel``
 931   Cancel the current VM migration.
 932 ERST
 933
 934     {
 935         .name       = "migrate_continue",
 936         .args_type  = "state:s",
 937         .params     = "state",
 938         .help       = "Continue migration from the given paused state",
 939         .cmd        = hmp_migrate_continue,
 940     },
 941 SRST
 942 ``migrate_continue`` *state*
 943   Continue migration from the paused state *state*
 944 ERST
 945
 946     {
 947         .name       = "migrate_incoming",
 948         .args_type  = "uri:s",
 949         .params     = "uri",
 950         .help       = "Continue an incoming migration from an -incoming defer",
 951         .cmd        = hmp_migrate_incoming,
 952     },
 953
 954 SRST
 955 ``migrate_incoming`` *uri*
 956   Continue an incoming migration using the *uri* (that has the same syntax
 957   as the ``-incoming`` option).
 958 ERST
 959
 960     {
 961         .name       = "migrate_recover",
 962         .args_type  = "uri:s",
 963         .params     = "uri",
 964         .help       = "Continue a paused incoming postcopy migration",
 965         .cmd        = hmp_migrate_recover,
 966     },
 967
 968 SRST
 969 ``migrate_recover`` *uri*
 970   Continue a paused incoming postcopy migration using the *uri*.
 971 ERST
 972
 973     {
 974         .name       = "migrate_pause",
 975         .args_type  = "",
 976         .params     = "",
 977         .help       = "Pause an ongoing migration (postcopy-only)",
 978         .cmd        = hmp_migrate_pause,
 979     },
 980
 981 SRST
 982 ``migrate_pause``
 983   Pause an ongoing migration.  Currently it only supports postcopy.
 984 ERST
 985
 986     {
 987         .name       = "migrate_set_capability",
 988         .args_type  = "capability:s,state:b",
 989         .params     = "capability state",
 990         .help       = "Enable/Disable the usage of a capability for migration",
 991         .cmd        = hmp_migrate_set_capability,
 992         .command_completion = migrate_set_capability_completion,
 993     },
 994
 995 SRST
 996 ``migrate_set_capability`` *capability* *state*
 997   Enable/Disable the usage of a capability *capability* for migration.
 998 ERST
 999
1000     {
1001         .name       = "migrate_set_parameter",
1002         .args_type  = "parameter:s,value:s",
1003         .params     = "parameter value",
1004         .help       = "Set the parameter for migration",
1005         .cmd        = hmp_migrate_set_parameter,
1006         .command_completion = migrate_set_parameter_completion,
1007     },
1008
1009 SRST
1010 ``migrate_set_parameter`` *parameter* *value*
1011   Set the parameter *parameter* for migration.
1012 ERST
1013
1014     {
1015         .name       = "migrate_start_postcopy",
1016         .args_type  = "",
1017         .params     = "",
1018         .help       = "Followup to a migration command to switch the migration"
1019                       " to postcopy mode. The postcopy-ram capability must "
1020                       "be set on both source and destination before the "
1021                       "original migration command .",
1022         .cmd        = hmp_migrate_start_postcopy,
1023     },
1024
1025 SRST
1026 ``migrate_start_postcopy``
1027   Switch in-progress migration to postcopy mode. Ignored after the end of
1028   migration (or once already in postcopy).
1029 ERST
1030
1031     {
1032         .name       = "x_colo_lost_heartbeat",
1033         .args_type  = "",
1034         .params     = "",
1035         .help       = "Tell COLO that heartbeat is lost,\n\t\t\t"
1036                       "a failover or takeover is needed.",
1037         .cmd = hmp_x_colo_lost_heartbeat,
1038     },
1039
1040 SRST
1041 ``x_colo_lost_heartbeat``
1042   Tell COLO that heartbeat is lost, a failover or takeover is needed.
1043 ERST
1044
1045     {
1046         .name       = "client_migrate_info",
1047         .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1048         .params     = "protocol hostname port tls-port cert-subject",
1049         .help       = "set migration information for remote display",
1050         .cmd        = hmp_client_migrate_info,
1051     },
1052
1053 SRST
1054 ``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1055   Set migration information for remote display.  This makes the server
1056   ask the client to automatically reconnect using the new parameters
1057   once migration finished successfully.  Only implemented for SPICE.
1058 ERST
1059
1060     {
1061         .name       = "dump-guest-memory",
1062         .args_type  = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1063         .params     = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1064         .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1065                       "-p: do paging to get guest's memory mapping.\n\t\t\t"
1066                       "-d: return immediately (do not wait for completion).\n\t\t\t"
1067                       "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1068                       "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1069                       "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1070                       "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1071                       "    for Windows x86 and x64 guests with vmcoreinfo driver only.\n\t\t\t"
1072                       "begin: the starting physical address.\n\t\t\t"
1073                       "length: the memory size, in bytes.",
1074         .cmd        = hmp_dump_guest_memory,
1075     },
1076
1077 SRST
1078 ``dump-guest-memory [-p]`` *filename* *begin* *length*
1079   \
1080 ``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1081   Dump guest memory to *protocol*. The file can be processed with crash or
1082   gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1083
1084   ``-p``
1085     do paging to get guest's memory mapping.
1086   ``-z``
1087     dump in kdump-compressed format, with zlib compression.
1088   ``-l``
1089     dump in kdump-compressed format, with lzo compression.
1090   ``-s``
1091     dump in kdump-compressed format, with snappy compression.
1092   ``-w``
1093     dump in Windows crashdump format (can be used instead of ELF-dump converting),
1094     for Windows x64 guests with vmcoreinfo driver only
1095   *filename*
1096     dump file name.
1097   *begin*
1098     the starting physical address. It's optional, and should be
1099     specified together with *length*.
1100   *length*
1101     the memory size, in bytes. It's optional, and should be specified
1102     together with *begin*.
1103
1104 ERST
1105
1106 #if defined(TARGET_S390X)
1107     {
1108         .name       = "dump-skeys",
1109         .args_type  = "filename:F",
1110         .params     = "",
1111         .help       = "Save guest storage keys into file 'filename'.\n",
1112         .cmd        = hmp_dump_skeys,
1113     },
1114 #endif
1115
1116 SRST
1117 ``dump-skeys`` *filename*
1118   Save guest storage keys to a file.
1119 ERST
1120
1121 #if defined(TARGET_S390X)
1122     {
1123         .name       = "migration_mode",
1124         .args_type  = "mode:i",
1125         .params     = "mode",
1126         .help       = "Enables or disables migration mode\n",
1127         .cmd        = hmp_migrationmode,
1128     },
1129 #endif
1130
1131 SRST
1132 ``migration_mode`` *mode*
1133   Enables or disables migration mode.
1134 ERST
1135
1136     {
1137         .name       = "snapshot_blkdev",
1138         .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1139         .params     = "[-n] device [new-image-file] [format]",
1140         .help       = "initiates a live snapshot\n\t\t\t"
1141                       "of device. If a new image file is specified, the\n\t\t\t"
1142                       "new image file will become the new root image.\n\t\t\t"
1143                       "If format is specified, the snapshot file will\n\t\t\t"
1144                       "be created in that format.\n\t\t\t"
1145                       "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1146                       "to reuse the image found in new-image-file, instead of\n\t\t\t"
1147                       "recreating it from scratch.",
1148         .cmd        = hmp_snapshot_blkdev,
1149     },
1150
1151 SRST
1152 ``snapshot_blkdev``
1153   Snapshot device, using snapshot file as target if provided
1154 ERST
1155
1156     {
1157         .name       = "snapshot_blkdev_internal",
1158         .args_type  = "device:B,name:s",
1159         .params     = "device name",
1160         .help       = "take an internal snapshot of device.\n\t\t\t"
1161                       "The format of the image used by device must\n\t\t\t"
1162                       "support it, such as qcow2.\n\t\t\t",
1163         .cmd        = hmp_snapshot_blkdev_internal,
1164     },
1165
1166 SRST
1167 ``snapshot_blkdev_internal``
1168   Take an internal snapshot on device if it support
1169 ERST
1170
1171     {
1172         .name       = "snapshot_delete_blkdev_internal",
1173         .args_type  = "device:B,name:s,id:s?",
1174         .params     = "device name [id]",
1175         .help       = "delete an internal snapshot of device.\n\t\t\t"
1176                       "If id is specified, qemu will try delete\n\t\t\t"
1177                       "the snapshot matching both id and name.\n\t\t\t"
1178                       "The format of the image used by device must\n\t\t\t"
1179                       "support it, such as qcow2.\n\t\t\t",
1180         .cmd        = hmp_snapshot_delete_blkdev_internal,
1181     },
1182
1183 SRST
1184 ``snapshot_delete_blkdev_internal``
1185   Delete an internal snapshot on device if it support
1186 ERST
1187
1188     {
1189         .name       = "drive_mirror",
1190         .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1191         .params     = "[-n] [-f] device target [format]",
1192         .help       = "initiates live storage\n\t\t\t"
1193                       "migration for a device. The device's contents are\n\t\t\t"
1194                       "copied to the new image file, including data that\n\t\t\t"
1195                       "is written after the command is started.\n\t\t\t"
1196                       "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1197                       "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1198                       "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1199                       "so that the result does not need a backing file.\n\t\t\t",
1200         .cmd        = hmp_drive_mirror,
1201     },
1202 SRST
1203 ``drive_mirror``
1204   Start mirroring a block device's writes to a new destination,
1205   using the specified target.
1206 ERST
1207
1208     {
1209         .name       = "drive_backup",
1210         .args_type  = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1211         .params     = "[-n] [-f] [-c] device target [format]",
1212         .help       = "initiates a point-in-time\n\t\t\t"
1213                       "copy for a device. The device's contents are\n\t\t\t"
1214                       "copied to the new image file, excluding data that\n\t\t\t"
1215                       "is written after the command is started.\n\t\t\t"
1216                       "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1217                       "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1218                       "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1219                       "so that the result does not need a backing file.\n\t\t\t"
1220                       "The -c flag requests QEMU to compress backup data\n\t\t\t"
1221                       "(if the target format supports it).\n\t\t\t",
1222         .cmd        = hmp_drive_backup,
1223     },
1224 SRST
1225 ``drive_backup``
1226   Start a point-in-time copy of a block device to a specified target.
1227 ERST
1228
1229     {
1230         .name       = "drive_add",
1231         .args_type  = "node:-n,pci_addr:s,opts:s",
1232         .params     = "[-n] [[<domain>:]<bus>:]<slot>\n"
1233                       "[file=file][,if=type][,bus=n]\n"
1234                       "[,unit=m][,media=d][,index=i]\n"
1235                       "[,snapshot=on|off][,cache=on|off]\n"
1236                       "[,readonly=on|off][,copy-on-read=on|off]",
1237         .help       = "add drive to PCI storage controller",
1238         .cmd        = hmp_drive_add,
1239     },
1240
1241 SRST
1242 ``drive_add``
1243   Add drive to PCI storage controller.
1244 ERST
1245
1246     {
1247         .name       = "pcie_aer_inject_error",
1248         .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1249                       "id:s,error_status:s,"
1250                       "header0:i?,header1:i?,header2:i?,header3:i?,"
1251                       "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1252         .params     = "[-a] [-c] id "
1253                       "<error_status> [<tlp header> [<tlp header prefix>]]",
1254         .help       = "inject pcie aer error\n\t\t\t"
1255                       " -a for advisory non fatal error\n\t\t\t"
1256                       " -c for correctable error\n\t\t\t"
1257                       "<id> = qdev device id\n\t\t\t"
1258                       "<error_status> = error string or 32bit\n\t\t\t"
1259                       "<tlp header> = 32bit x 4\n\t\t\t"
1260                       "<tlp header prefix> = 32bit x 4",
1261         .cmd        = hmp_pcie_aer_inject_error,
1262     },
1263
1264 SRST
1265 ``pcie_aer_inject_error``
1266   Inject PCIe AER error
1267 ERST
1268
1269     {
1270         .name       = "netdev_add",
1271         .args_type  = "netdev:O",
1272         .params     = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user"
1273 #ifdef CONFIG_VMNET
1274                       "|vmnet-host|vmnet-shared|vmnet-bridged"
1275 #endif
1276                       "],id=str[,prop=value][,...]",
1277         .help       = "add host network device",
1278         .cmd        = hmp_netdev_add,
1279         .command_completion = netdev_add_completion,
1280         .flags      = "p",
1281     },
1282
1283 SRST
1284 ``netdev_add``
1285   Add host network device.
1286 ERST
1287
1288     {
1289         .name       = "netdev_del",
1290         .args_type  = "id:s",
1291         .params     = "id",
1292         .help       = "remove host network device",
1293         .cmd        = hmp_netdev_del,
1294         .command_completion = netdev_del_completion,
1295         .flags      = "p",
1296     },
1297
1298 SRST
1299 ``netdev_del``
1300   Remove host network device.
1301 ERST
1302
1303     {
1304         .name       = "object_add",
1305         .args_type  = "object:S",
1306         .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1307         .help       = "create QOM object",
1308         .cmd        = hmp_object_add,
1309         .command_completion = object_add_completion,
1310         .flags      = "p",
1311     },
1312
1313 SRST
1314 ``object_add``
1315   Create QOM object.
1316 ERST
1317
1318     {
1319         .name       = "object_del",
1320         .args_type  = "id:s",
1321         .params     = "id",
1322         .help       = "destroy QOM object",
1323         .cmd        = hmp_object_del,
1324         .command_completion = object_del_completion,
1325         .flags      = "p",
1326     },
1327
1328 SRST
1329 ``object_del``
1330   Destroy QOM object.
1331 ERST
1332
1333 #ifdef CONFIG_SLIRP
1334     {
1335         .name       = "hostfwd_add",
1336         .args_type  = "arg1:s,arg2:s?",
1337         .params     = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1338         .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1339         .cmd        = hmp_hostfwd_add,
1340     },
1341 #endif
1342 SRST
1343 ``hostfwd_add``
1344   Redirect TCP or UDP connections from host to guest (requires -net user).
1345 ERST
1346
1347 #ifdef CONFIG_SLIRP
1348     {
1349         .name       = "hostfwd_remove",
1350         .args_type  = "arg1:s,arg2:s?",
1351         .params     = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1352         .help       = "remove host-to-guest TCP or UDP redirection",
1353         .cmd        = hmp_hostfwd_remove,
1354     },
1355
1356 #endif
1357 SRST
1358 ``hostfwd_remove``
1359   Remove host-to-guest TCP or UDP redirection.
1360 ERST
1361
1362     {
1363         .name       = "balloon",
1364         .args_type  = "value:M",
1365         .params     = "target",
1366         .help       = "request VM to change its memory allocation (in MB)",
1367         .cmd        = hmp_balloon,
1368     },
1369
1370 SRST
1371 ``balloon`` *value*
1372   Request VM to change its memory allocation to *value* (in MB).
1373 ERST
1374
1375     {
1376         .name       = "set_link",
1377         .args_type  = "name:s,up:b",
1378         .params     = "name on|off",
1379         .help       = "change the link status of a network adapter",
1380         .cmd        = hmp_set_link,
1381         .command_completion = set_link_completion,
1382     },
1383
1384 SRST
1385 ``set_link`` *name* ``[on|off]``
1386   Switch link *name* on (i.e. up) or off (i.e. down).
1387 ERST
1388
1389     {
1390         .name       = "watchdog_action",
1391         .args_type  = "action:s",
1392         .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1393         .help       = "change watchdog action",
1394         .cmd        = hmp_watchdog_action,
1395         .command_completion = watchdog_action_completion,
1396     },
1397
1398 SRST
1399 ``watchdog_action``
1400   Change watchdog action.
1401 ERST
1402
1403     {
1404         .name       = "nbd_server_start",
1405         .args_type  = "all:-a,writable:-w,uri:s",
1406         .params     = "nbd_server_start [-a] [-w] host:port",
1407         .help       = "serve block devices on the given host and port",
1408         .cmd        = hmp_nbd_server_start,
1409     },
1410 SRST
1411 ``nbd_server_start`` *host*:*port*
1412   Start an NBD server on the given host and/or port.  If the ``-a``
1413   option is included, all of the virtual machine's block devices that
1414   have an inserted media on them are automatically exported; in this case,
1415   the ``-w`` option makes the devices writable too.
1416 ERST
1417
1418     {
1419         .name       = "nbd_server_add",
1420         .args_type  = "writable:-w,device:B,name:s?",
1421         .params     = "nbd_server_add [-w] device [name]",
1422         .help       = "export a block device via NBD",
1423         .cmd        = hmp_nbd_server_add,
1424     },
1425 SRST
1426 ``nbd_server_add`` *device* [ *name* ]
1427   Export a block device through QEMU's NBD server, which must be started
1428   beforehand with ``nbd_server_start``.  The ``-w`` option makes the
1429   exported device writable too.  The export name is controlled by *name*,
1430   defaulting to *device*.
1431 ERST
1432
1433     {
1434         .name       = "nbd_server_remove",
1435         .args_type  = "force:-f,name:s",
1436         .params     = "nbd_server_remove [-f] name",
1437         .help       = "remove an export previously exposed via NBD",
1438         .cmd        = hmp_nbd_server_remove,
1439     },
1440 SRST
1441 ``nbd_server_remove [-f]`` *name*
1442   Stop exporting a block device through QEMU's NBD server, which was
1443   previously started with ``nbd_server_add``.  The ``-f``
1444   option forces the server to drop the export immediately even if
1445   clients are connected; otherwise the command fails unless there are no
1446   clients.
1447 ERST
1448
1449     {
1450         .name       = "nbd_server_stop",
1451         .args_type  = "",
1452         .params     = "nbd_server_stop",
1453         .help       = "stop serving block devices using the NBD protocol",
1454         .cmd        = hmp_nbd_server_stop,
1455     },
1456 SRST
1457 ``nbd_server_stop``
1458   Stop the QEMU embedded NBD server.
1459 ERST
1460
1461
1462 #if defined(TARGET_I386)
1463
1464     {
1465         .name       = "mce",
1466         .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1467         .params     = "[-b] cpu bank status mcgstatus addr misc",
1468         .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1469         .cmd        = hmp_mce,
1470     },
1471
1472 #endif
1473 SRST
1474 ``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1475   Inject an MCE on the given CPU (x86 only).
1476 ERST
1477
1478     {
1479         .name       = "getfd",
1480         .args_type  = "fdname:s",
1481         .params     = "getfd name",
1482         .help       = "receive a file descriptor via SCM rights and assign it a name",
1483         .cmd        = hmp_getfd,
1484     },
1485
1486 SRST
1487 ``getfd`` *fdname*
1488   If a file descriptor is passed alongside this command using the SCM_RIGHTS
1489   mechanism on unix sockets, it is stored using the name *fdname* for
1490   later use by other monitor commands.
1491 ERST
1492
1493     {
1494         .name       = "closefd",
1495         .args_type  = "fdname:s",
1496         .params     = "closefd name",
1497         .help       = "close a file descriptor previously passed via SCM rights",
1498         .cmd        = hmp_closefd,
1499     },
1500
1501 SRST
1502 ``closefd`` *fdname*
1503   Close the file descriptor previously assigned to *fdname* using the
1504   ``getfd`` command. This is only needed if the file descriptor was never
1505   used by another monitor command.
1506 ERST
1507
1508     {
1509         .name       = "block_set_io_throttle",
1510         .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1511         .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1512         .help       = "change I/O throttle limits for a block drive",
1513         .cmd        = hmp_block_set_io_throttle,
1514     },
1515
1516 SRST
1517 ``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1518   Change I/O throttle limits for a block drive to
1519   *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1520   *device* can be a block device name, a qdev ID or a QOM path.
1521 ERST
1522
1523     {
1524         .name       = "set_password",
1525         .args_type  = "protocol:s,password:s,display:-ds,connected:s?",
1526         .params     = "protocol password [-d display] [action-if-connected]",
1527         .help       = "set spice/vnc password",
1528         .cmd        = hmp_set_password,
1529     },
1530
1531 SRST
1532 ``set_password [ vnc | spice ] password [ -d display ] [ action-if-connected ]``
1533   Change spice/vnc password.  *display* can be used with 'vnc' to specify
1534   which display to set the password on.  *action-if-connected* specifies
1535   what should happen in case a connection is established: *fail* makes
1536   the password change fail.  *disconnect* changes the password and
1537   disconnects the client.  *keep* changes the password and keeps the
1538   connection up.  *keep* is the default.
1539 ERST
1540
1541     {
1542         .name       = "expire_password",
1543         .args_type  = "protocol:s,time:s,display:-ds",
1544         .params     = "protocol time [-d display]",
1545         .help       = "set spice/vnc password expire-time",
1546         .cmd        = hmp_expire_password,
1547     },
1548
1549 SRST
1550 ``expire_password [ vnc | spice ] expire-time [ -d display ]``
1551   Specify when a password for spice/vnc becomes invalid.
1552   *display* behaves the same as in ``set_password``.
1553   *expire-time* accepts:
1554
1555   ``now``
1556     Invalidate password instantly.
1557   ``never``
1558     Password stays valid forever.
1559   ``+``\ *nsec*
1560     Password stays valid for *nsec* seconds starting now.
1561   *nsec*
1562     Password is invalidated at the given time.  *nsec* are the seconds
1563     passed since 1970, i.e. unix epoch.
1564
1565 ERST
1566
1567     {
1568         .name       = "chardev-add",
1569         .args_type  = "args:s",
1570         .params     = "args",
1571         .help       = "add chardev",
1572         .cmd        = hmp_chardev_add,
1573         .command_completion = chardev_add_completion,
1574     },
1575
1576 SRST
1577 ``chardev-add`` *args*
1578   chardev-add accepts the same parameters as the -chardev command line switch.
1579 ERST
1580
1581     {
1582         .name       = "chardev-change",
1583         .args_type  = "id:s,args:s",
1584         .params     = "id args",
1585         .help       = "change chardev",
1586         .cmd        = hmp_chardev_change,
1587     },
1588
1589 SRST
1590 ``chardev-change`` *args*
1591   chardev-change accepts existing chardev *id* and then the same arguments
1592   as the -chardev command line switch (except for "id").
1593 ERST
1594
1595     {
1596         .name       = "chardev-remove",
1597         .args_type  = "id:s",
1598         .params     = "id",
1599         .help       = "remove chardev",
1600         .cmd        = hmp_chardev_remove,
1601         .command_completion = chardev_remove_completion,
1602     },
1603
1604 SRST
1605 ``chardev-remove`` *id*
1606   Removes the chardev *id*.
1607 ERST
1608
1609     {
1610         .name       = "chardev-send-break",
1611         .args_type  = "id:s",
1612         .params     = "id",
1613         .help       = "send a break on chardev",
1614         .cmd        = hmp_chardev_send_break,
1615         .command_completion = chardev_remove_completion,
1616     },
1617
1618 SRST
1619 ``chardev-send-break`` *id*
1620   Send a break on the chardev *id*.
1621 ERST
1622
1623     {
1624         .name       = "qemu-io",
1625         .args_type  = "qdev:-d,device:B,command:s",
1626         .params     = "[-d] [device] \"[command]\"",
1627         .help       = "run a qemu-io command on a block device\n\t\t\t"
1628                       "-d: [device] is a device ID rather than a "
1629                       "drive ID or node name",
1630         .cmd        = hmp_qemu_io,
1631     },
1632
1633 SRST
1634 ``qemu-io`` *device* *command*
1635   Executes a qemu-io command on the given block device.
1636 ERST
1637
1638     {
1639         .name       = "qom-list",
1640         .args_type  = "path:s?",
1641         .params     = "path",
1642         .help       = "list QOM properties",
1643         .cmd        = hmp_qom_list,
1644         .flags      = "p",
1645     },
1646
1647 SRST
1648 ``qom-list`` [*path*]
1649   Print QOM properties of object at location *path*
1650 ERST
1651
1652     {
1653         .name       = "qom-get",
1654         .args_type  = "path:s,property:s",
1655         .params     = "path property",
1656         .help       = "print QOM property",
1657         .cmd        = hmp_qom_get,
1658         .flags      = "p",
1659     },
1660
1661 SRST
1662 ``qom-get`` *path* *property*
1663   Print QOM property *property* of object at location *path*
1664 ERST
1665
1666     {
1667         .name       = "qom-set",
1668         .args_type  = "json:-j,path:s,property:s,value:S",
1669         .params     = "[-j] path property value",
1670         .help       = "set QOM property.\n\t\t\t"
1671                       "-j: the value is specified in json format.",
1672         .cmd        = hmp_qom_set,
1673         .flags      = "p",
1674     },
1675
1676 SRST
1677 ``qom-set`` *path* *property* *value*
1678   Set QOM property *property* of object at location *path* to value *value*
1679 ERST
1680
1681     {
1682         .name       = "replay_break",
1683         .args_type  = "icount:l",
1684         .params     = "icount",
1685         .help       = "set breakpoint at the specified instruction count",
1686         .cmd        = hmp_replay_break,
1687     },
1688
1689 SRST
1690 ``replay_break`` *icount*
1691   Set replay breakpoint at instruction count *icount*.
1692   Execution stops when the specified instruction is reached.
1693   There can be at most one breakpoint. When breakpoint is set, any prior
1694   one is removed.  The breakpoint may be set only in replay mode and only
1695   "in the future", i.e. at instruction counts greater than the current one.
1696   The current instruction count can be observed with ``info replay``.
1697 ERST
1698
1699     {
1700         .name       = "replay_delete_break",
1701         .args_type  = "",
1702         .params     = "",
1703         .help       = "remove replay breakpoint",
1704         .cmd        = hmp_replay_delete_break,
1705     },
1706
1707 SRST
1708 ``replay_delete_break``
1709   Remove replay breakpoint which was previously set with ``replay_break``.
1710   The command is ignored when there are no replay breakpoints.
1711 ERST
1712
1713     {
1714         .name       = "replay_seek",
1715         .args_type  = "icount:l",
1716         .params     = "icount",
1717         .help       = "replay execution to the specified instruction count",
1718         .cmd        = hmp_replay_seek,
1719     },
1720
1721 SRST
1722 ``replay_seek`` *icount*
1723   Automatically proceed to the instruction count *icount*, when
1724   replaying the execution. The command automatically loads nearest
1725   snapshot and replays the execution to find the desired instruction.
1726   When there is no preceding snapshot or the execution is not replayed,
1727   then the command fails.
1728   *icount* for the reference may be observed with ``info replay`` command.
1729 ERST
1730
1731     {
1732         .name       = "info",
1733         .args_type  = "item:s?",
1734         .params     = "[subcommand]",
1735         .help       = "show various information about the system state",
1736         .cmd        = hmp_info_help,
1737         .sub_table  = hmp_info_cmds,
1738         .flags      = "p",
1739     },
1740
1741 SRST
1742 ``calc_dirty_rate`` *second*
1743   Start a round of dirty rate measurement with the period specified in *second*.
1744   The result of the dirty rate measurement may be observed with ``info
1745   dirty_rate`` command.
1746 ERST
1747
1748     {
1749         .name       = "calc_dirty_rate",
1750         .args_type  = "dirty_ring:-r,dirty_bitmap:-b,second:l,sample_pages_per_GB:l?",
1751         .params     = "[-r] [-b] second [sample_pages_per_GB]",
1752         .help       = "start a round of guest dirty rate measurement (using -r to"
1753                       "\n\t\t\t specify dirty ring as the method of calculation and"
1754                       "\n\t\t\t -b to specify dirty bitmap as method of calculation)",
1755         .cmd        = hmp_calc_dirty_rate,
1756     },