qemu/hmp-commands.hx
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   1HXCOMM Use DEFHEADING() to define headings in both help text and texi
   2HXCOMM Text between STEXI and ETEXI are copied to texi version and
   3HXCOMM discarded from C version
   4HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
   5HXCOMM monitor commands
   6HXCOMM HXCOMM can be used for comments, discarded from both texi and C
   7
   8STEXI
   9@table @option
  10ETEXI
  11
  12    {
  13        .name       = "help|?",
  14        .args_type  = "name:S?",
  15        .params     = "[cmd]",
  16        .help       = "show the help",
  17        .cmd        = do_help_cmd,
  18        .flags      = "p",
  19    },
  20
  21STEXI
  22@item help or ? [@var{cmd}]
  23@findex help
  24Show the help for all commands or just for command @var{cmd}.
  25ETEXI
  26
  27    {
  28        .name       = "commit",
  29        .args_type  = "device:B",
  30        .params     = "device|all",
  31        .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
  32        .cmd        = hmp_commit,
  33    },
  34
  35STEXI
  36@item commit
  37@findex commit
  38Commit changes to the disk images (if -snapshot is used) or backing files.
  39If the backing file is smaller than the snapshot, then the backing file will be
  40resized to be the same size as the snapshot.  If the snapshot is smaller than
  41the backing file, the backing file will not be truncated.  If you want the
  42backing file to match the size of the smaller snapshot, you can safely truncate
  43it yourself once the commit operation successfully completes.
  44ETEXI
  45
  46    {
  47        .name       = "q|quit",
  48        .args_type  = "",
  49        .params     = "",
  50        .help       = "quit the emulator",
  51        .cmd        = hmp_quit,
  52    },
  53
  54STEXI
  55@item q or quit
  56@findex quit
  57Quit the emulator.
  58ETEXI
  59
  60    {
  61        .name       = "exit_preconfig",
  62        .args_type  = "",
  63        .params     = "",
  64        .help       = "exit the preconfig state",
  65        .cmd        = hmp_exit_preconfig,
  66        .flags      = "p",
  67    },
  68
  69STEXI
  70@item exit_preconfig
  71@findex exit_preconfig
  72This command makes QEMU exit the preconfig state and proceed with
  73VM initialization using configuration data provided on the command line
  74and via the QMP monitor during the preconfig state. The command is only
  75available during the preconfig state (i.e. when the --preconfig command
  76line option was in use).
  77ETEXI
  78
  79    {
  80        .name       = "block_resize",
  81        .args_type  = "device:B,size:o",
  82        .params     = "device size",
  83        .help       = "resize a block image",
  84        .cmd        = hmp_block_resize,
  85    },
  86
  87STEXI
  88@item block_resize
  89@findex block_resize
  90Resize a block image while a guest is running.  Usually requires guest
  91action to see the updated size.  Resize to a lower size is supported,
  92but should be used with extreme caution.  Note that this command only
  93resizes image files, it can not resize block devices like LVM volumes.
  94ETEXI
  95
  96    {
  97        .name       = "block_stream",
  98        .args_type  = "device:B,speed:o?,base:s?",
  99        .params     = "device [speed [base]]",
 100        .help       = "copy data from a backing file into a block device",
 101        .cmd        = hmp_block_stream,
 102    },
 103
 104STEXI
 105@item block_stream
 106@findex block_stream
 107Copy data from a backing file into a block device.
 108ETEXI
 109
 110    {
 111        .name       = "block_job_set_speed",
 112        .args_type  = "device:B,speed:o",
 113        .params     = "device speed",
 114        .help       = "set maximum speed for a background block operation",
 115        .cmd        = hmp_block_job_set_speed,
 116    },
 117
 118STEXI
 119@item block_job_set_speed
 120@findex block_job_set_speed
 121Set maximum speed for a background block operation.
 122ETEXI
 123
 124    {
 125        .name       = "block_job_cancel",
 126        .args_type  = "force:-f,device:B",
 127        .params     = "[-f] device",
 128        .help       = "stop an active background block operation (use -f"
 129                      "\n\t\t\t if you want to abort the operation immediately"
 130                      "\n\t\t\t instead of keep running until data is in sync)",
 131        .cmd        = hmp_block_job_cancel,
 132    },
 133
 134STEXI
 135@item block_job_cancel
 136@findex block_job_cancel
 137Stop an active background block operation (streaming, mirroring).
 138ETEXI
 139
 140    {
 141        .name       = "block_job_complete",
 142        .args_type  = "device:B",
 143        .params     = "device",
 144        .help       = "stop an active background block operation",
 145        .cmd        = hmp_block_job_complete,
 146    },
 147
 148STEXI
 149@item block_job_complete
 150@findex block_job_complete
 151Manually trigger completion of an active background block operation.
 152For mirroring, this will switch the device to the destination path.
 153ETEXI
 154
 155    {
 156        .name       = "block_job_pause",
 157        .args_type  = "device:B",
 158        .params     = "device",
 159        .help       = "pause an active background block operation",
 160        .cmd        = hmp_block_job_pause,
 161    },
 162
 163STEXI
 164@item block_job_pause
 165@findex block_job_pause
 166Pause an active block streaming operation.
 167ETEXI
 168
 169    {
 170        .name       = "block_job_resume",
 171        .args_type  = "device:B",
 172        .params     = "device",
 173        .help       = "resume a paused background block operation",
 174        .cmd        = hmp_block_job_resume,
 175    },
 176
 177STEXI
 178@item block_job_resume
 179@findex block_job_resume
 180Resume a paused block streaming operation.
 181ETEXI
 182
 183    {
 184        .name       = "eject",
 185        .args_type  = "force:-f,device:B",
 186        .params     = "[-f] device",
 187        .help       = "eject a removable medium (use -f to force it)",
 188        .cmd        = hmp_eject,
 189    },
 190
 191STEXI
 192@item eject [-f] @var{device}
 193@findex eject
 194Eject a removable medium (use -f to force it).
 195ETEXI
 196
 197    {
 198        .name       = "drive_del",
 199        .args_type  = "id:B",
 200        .params     = "device",
 201        .help       = "remove host block device",
 202        .cmd        = hmp_drive_del,
 203    },
 204
 205STEXI
 206@item drive_del @var{device}
 207@findex drive_del
 208Remove host block device.  The result is that guest generated IO is no longer
 209submitted against the host device underlying the disk.  Once a drive has
 210been deleted, the QEMU Block layer returns -EIO which results in IO
 211errors in the guest for applications that are reading/writing to the device.
 212These errors are always reported to the guest, regardless of the drive's error
 213actions (drive options rerror, werror).
 214ETEXI
 215
 216    {
 217        .name       = "change",
 218        .args_type  = "device:B,target:F,arg:s?,read-only-mode:s?",
 219        .params     = "device filename [format [read-only-mode]]",
 220        .help       = "change a removable medium, optional format",
 221        .cmd        = hmp_change,
 222    },
 223
 224STEXI
 225@item change @var{device} @var{setting}
 226@findex change
 227Change the configuration of a device.
 228
 229@table @option
 230@item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]]
 231Change the medium for a removable disk device to point to @var{filename}. eg
 232
 233@example
 234(qemu) change ide1-cd0 /path/to/some.iso
 235@end example
 236
 237@var{format} is optional.
 238
 239@var{read-only-mode} may be used to change the read-only status of the device.
 240It accepts the following values:
 241
 242@table @var
 243@item retain
 244Retains the current status; this is the default.
 245
 246@item read-only
 247Makes the device read-only.
 248
 249@item read-write
 250Makes the device writable.
 251@end table
 252
 253@item change vnc @var{display},@var{options}
 254Change the configuration of the VNC server. The valid syntax for @var{display}
 255and @var{options} are described at @ref{sec_invocation}. eg
 256
 257@example
 258(qemu) change vnc localhost:1
 259@end example
 260
 261@item change vnc password [@var{password}]
 262
 263Change the password associated with the VNC server. If the new password is not
 264supplied, the monitor will prompt for it to be entered. VNC passwords are only
 265significant up to 8 letters. eg
 266
 267@example
 268(qemu) change vnc password
 269Password: ********
 270@end example
 271
 272@end table
 273ETEXI
 274
 275    {
 276        .name       = "screendump",
 277        .args_type  = "filename:F,device:s?,head:i?",
 278        .params     = "filename [device [head]]",
 279        .help       = "save screen from head 'head' of display device 'device' "
 280                      "into PPM image 'filename'",
 281        .cmd        = hmp_screendump,
 282    },
 283
 284STEXI
 285@item screendump @var{filename}
 286@findex screendump
 287Save screen into PPM image @var{filename}.
 288ETEXI
 289
 290    {
 291        .name       = "logfile",
 292        .args_type  = "filename:F",
 293        .params     = "filename",
 294        .help       = "output logs to 'filename'",
 295        .cmd        = hmp_logfile,
 296    },
 297
 298STEXI
 299@item logfile @var{filename}
 300@findex logfile
 301Output logs to @var{filename}.
 302ETEXI
 303
 304    {
 305        .name       = "trace-event",
 306        .args_type  = "name:s,option:b,vcpu:i?",
 307        .params     = "name on|off [vcpu]",
 308        .help       = "changes status of a specific trace event "
 309                      "(vcpu: vCPU to set, default is all)",
 310        .cmd = hmp_trace_event,
 311        .command_completion = trace_event_completion,
 312    },
 313
 314STEXI
 315@item trace-event
 316@findex trace-event
 317changes status of a trace event
 318ETEXI
 319
 320#if defined(CONFIG_TRACE_SIMPLE)
 321    {
 322        .name       = "trace-file",
 323        .args_type  = "op:s?,arg:F?",
 324        .params     = "on|off|flush|set [arg]",
 325        .help       = "open, close, or flush trace file, or set a new file name",
 326        .cmd        = hmp_trace_file,
 327    },
 328
 329STEXI
 330@item trace-file on|off|flush
 331@findex trace-file
 332Open, close, or flush the trace file.  If no argument is given, the status of the trace file is displayed.
 333ETEXI
 334#endif
 335
 336    {
 337        .name       = "log",
 338        .args_type  = "items:s",
 339        .params     = "item1[,...]",
 340        .help       = "activate logging of the specified items",
 341        .cmd        = hmp_log,
 342    },
 343
 344STEXI
 345@item log @var{item1}[,...]
 346@findex log
 347Activate logging of the specified items.
 348ETEXI
 349
 350    {
 351        .name       = "savevm",
 352        .args_type  = "name:s?",
 353        .params     = "tag",
 354        .help       = "save a VM snapshot. If no tag is provided, a new snapshot is created",
 355        .cmd        = hmp_savevm,
 356    },
 357
 358STEXI
 359@item savevm @var{tag}
 360@findex savevm
 361Create a snapshot of the whole virtual machine. If @var{tag} is
 362provided, it is used as human readable identifier. If there is already
 363a snapshot with the same tag, it is replaced. More info at
 364@ref{vm_snapshots}.
 365
 366Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
 367only @var{tag} as parameter.
 368ETEXI
 369
 370    {
 371        .name       = "loadvm",
 372        .args_type  = "name:s",
 373        .params     = "tag",
 374        .help       = "restore a VM snapshot from its tag",
 375        .cmd        = hmp_loadvm,
 376        .command_completion = loadvm_completion,
 377    },
 378
 379STEXI
 380@item loadvm @var{tag}
 381@findex loadvm
 382Set the whole virtual machine to the snapshot identified by the tag
 383@var{tag}.
 384
 385Since 4.0, loadvm stopped accepting snapshot id as parameter.
 386ETEXI
 387
 388    {
 389        .name       = "delvm",
 390        .args_type  = "name:s",
 391        .params     = "tag",
 392        .help       = "delete a VM snapshot from its tag",
 393        .cmd        = hmp_delvm,
 394        .command_completion = delvm_completion,
 395    },
 396
 397STEXI
 398@item delvm @var{tag}
 399@findex delvm
 400Delete the snapshot identified by @var{tag}.
 401
 402Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
 403only @var{tag} as parameter.
 404ETEXI
 405
 406    {
 407        .name       = "singlestep",
 408        .args_type  = "option:s?",
 409        .params     = "[on|off]",
 410        .help       = "run emulation in singlestep mode or switch to normal mode",
 411        .cmd        = hmp_singlestep,
 412    },
 413
 414STEXI
 415@item singlestep [off]
 416@findex singlestep
 417Run the emulation in single step mode.
 418If called with option off, the emulation returns to normal mode.
 419ETEXI
 420
 421    {
 422        .name       = "stop",
 423        .args_type  = "",
 424        .params     = "",
 425        .help       = "stop emulation",
 426        .cmd        = hmp_stop,
 427    },
 428
 429STEXI
 430@item stop
 431@findex stop
 432Stop emulation.
 433ETEXI
 434
 435    {
 436        .name       = "c|cont",
 437        .args_type  = "",
 438        .params     = "",
 439        .help       = "resume emulation",
 440        .cmd        = hmp_cont,
 441    },
 442
 443STEXI
 444@item c or cont
 445@findex cont
 446Resume emulation.
 447ETEXI
 448
 449    {
 450        .name       = "system_wakeup",
 451        .args_type  = "",
 452        .params     = "",
 453        .help       = "wakeup guest from suspend",
 454        .cmd        = hmp_system_wakeup,
 455    },
 456
 457STEXI
 458@item system_wakeup
 459@findex system_wakeup
 460Wakeup guest from suspend.
 461ETEXI
 462
 463    {
 464        .name       = "gdbserver",
 465        .args_type  = "device:s?",
 466        .params     = "[device]",
 467        .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
 468        .cmd        = hmp_gdbserver,
 469    },
 470
 471STEXI
 472@item gdbserver [@var{port}]
 473@findex gdbserver
 474Start gdbserver session (default @var{port}=1234)
 475ETEXI
 476
 477    {
 478        .name       = "x",
 479        .args_type  = "fmt:/,addr:l",
 480        .params     = "/fmt addr",
 481        .help       = "virtual memory dump starting at 'addr'",
 482        .cmd        = hmp_memory_dump,
 483    },
 484
 485STEXI
 486@item x/fmt @var{addr}
 487@findex x
 488Virtual memory dump starting at @var{addr}.
 489ETEXI
 490
 491    {
 492        .name       = "xp",
 493        .args_type  = "fmt:/,addr:l",
 494        .params     = "/fmt addr",
 495        .help       = "physical memory dump starting at 'addr'",
 496        .cmd        = hmp_physical_memory_dump,
 497    },
 498
 499STEXI
 500@item xp /@var{fmt} @var{addr}
 501@findex xp
 502Physical memory dump starting at @var{addr}.
 503
 504@var{fmt} is a format which tells the command how to format the
 505data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
 506
 507@table @var
 508@item count
 509is the number of items to be dumped.
 510
 511@item format
 512can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
 513c (char) or i (asm instruction).
 514
 515@item size
 516can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
 517@code{h} or @code{w} can be specified with the @code{i} format to
 518respectively select 16 or 32 bit code instruction size.
 519
 520@end table
 521
 522Examples:
 523@itemize
 524@item
 525Dump 10 instructions at the current instruction pointer:
 526@example
 527(qemu) x/10i $eip
 5280x90107063:  ret
 5290x90107064:  sti
 5300x90107065:  lea    0x0(%esi,1),%esi
 5310x90107069:  lea    0x0(%edi,1),%edi
 5320x90107070:  ret
 5330x90107071:  jmp    0x90107080
 5340x90107073:  nop
 5350x90107074:  nop
 5360x90107075:  nop
 5370x90107076:  nop
 538@end example
 539
 540@item
 541Dump 80 16 bit values at the start of the video memory.
 542@smallexample
 543(qemu) xp/80hx 0xb8000
 5440x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
 5450x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
 5460x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
 5470x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
 5480x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
 5490x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
 5500x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5510x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5520x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5530x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 554@end smallexample
 555@end itemize
 556ETEXI
 557
 558    {
 559        .name       = "gpa2hva",
 560        .args_type  = "addr:l",
 561        .params     = "addr",
 562        .help       = "print the host virtual address corresponding to a guest physical address",
 563        .cmd        = hmp_gpa2hva,
 564    },
 565
 566STEXI
 567@item gpa2hva @var{addr}
 568@findex gpa2hva
 569Print the host virtual address at which the guest's physical address @var{addr}
 570is mapped.
 571ETEXI
 572
 573#ifdef CONFIG_LINUX
 574    {
 575        .name       = "gpa2hpa",
 576        .args_type  = "addr:l",
 577        .params     = "addr",
 578        .help       = "print the host physical address corresponding to a guest physical address",
 579        .cmd        = hmp_gpa2hpa,
 580    },
 581#endif
 582
 583STEXI
 584@item gpa2hpa @var{addr}
 585@findex gpa2hpa
 586Print the host physical address at which the guest's physical address @var{addr}
 587is mapped.
 588ETEXI
 589
 590    {
 591        .name       = "p|print",
 592        .args_type  = "fmt:/,val:l",
 593        .params     = "/fmt expr",
 594        .help       = "print expression value (use $reg for CPU register access)",
 595        .cmd        = do_print,
 596    },
 597
 598STEXI
 599@item p or print/@var{fmt} @var{expr}
 600@findex print
 601Print expression value. Only the @var{format} part of @var{fmt} is
 602used.
 603ETEXI
 604
 605    {
 606        .name       = "i",
 607        .args_type  = "fmt:/,addr:i,index:i.",
 608        .params     = "/fmt addr",
 609        .help       = "I/O port read",
 610        .cmd        = hmp_ioport_read,
 611    },
 612
 613STEXI
 614@item i/@var{fmt} @var{addr} [.@var{index}]
 615@findex i
 616Read I/O port.
 617ETEXI
 618
 619    {
 620        .name       = "o",
 621        .args_type  = "fmt:/,addr:i,val:i",
 622        .params     = "/fmt addr value",
 623        .help       = "I/O port write",
 624        .cmd        = hmp_ioport_write,
 625    },
 626
 627STEXI
 628@item o/@var{fmt} @var{addr} @var{val}
 629@findex o
 630Write to I/O port.
 631ETEXI
 632
 633    {
 634        .name       = "sendkey",
 635        .args_type  = "keys:s,hold-time:i?",
 636        .params     = "keys [hold_ms]",
 637        .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
 638        .cmd        = hmp_sendkey,
 639        .command_completion = sendkey_completion,
 640    },
 641
 642STEXI
 643@item sendkey @var{keys}
 644@findex sendkey
 645Send @var{keys} to the guest. @var{keys} could be the name of the
 646key or the raw value in hexadecimal format. Use @code{-} to press
 647several keys simultaneously. Example:
 648@example
 649sendkey ctrl-alt-f1
 650@end example
 651
 652This command is useful to send keys that your graphical user interface
 653intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
 654ETEXI
 655    {
 656        .name       = "sync-profile",
 657        .args_type  = "op:s?",
 658        .params     = "[on|off|reset]",
 659        .help       = "enable, disable or reset synchronization profiling. "
 660                      "With no arguments, prints whether profiling is on or off.",
 661        .cmd        = hmp_sync_profile,
 662    },
 663
 664STEXI
 665@item sync-profile [on|off|reset]
 666@findex sync-profile
 667Enable, disable or reset synchronization profiling. With no arguments, prints
 668whether profiling is on or off.
 669ETEXI
 670
 671    {
 672        .name       = "system_reset",
 673        .args_type  = "",
 674        .params     = "",
 675        .help       = "reset the system",
 676        .cmd        = hmp_system_reset,
 677    },
 678
 679STEXI
 680@item system_reset
 681@findex system_reset
 682Reset the system.
 683ETEXI
 684
 685    {
 686        .name       = "system_powerdown",
 687        .args_type  = "",
 688        .params     = "",
 689        .help       = "send system power down event",
 690        .cmd        = hmp_system_powerdown,
 691    },
 692
 693STEXI
 694@item system_powerdown
 695@findex system_powerdown
 696Power down the system (if supported).
 697ETEXI
 698
 699    {
 700        .name       = "sum",
 701        .args_type  = "start:i,size:i",
 702        .params     = "addr size",
 703        .help       = "compute the checksum of a memory region",
 704        .cmd        = hmp_sum,
 705    },
 706
 707STEXI
 708@item sum @var{addr} @var{size}
 709@findex sum
 710Compute the checksum of a memory region.
 711ETEXI
 712
 713    {
 714        .name       = "device_add",
 715        .args_type  = "device:O",
 716        .params     = "driver[,prop=value][,...]",
 717        .help       = "add device, like -device on the command line",
 718        .cmd        = hmp_device_add,
 719        .command_completion = device_add_completion,
 720    },
 721
 722STEXI
 723@item device_add @var{config}
 724@findex device_add
 725Add device.
 726ETEXI
 727
 728    {
 729        .name       = "device_del",
 730        .args_type  = "id:s",
 731        .params     = "device",
 732        .help       = "remove device",
 733        .cmd        = hmp_device_del,
 734        .command_completion = device_del_completion,
 735    },
 736
 737STEXI
 738@item device_del @var{id}
 739@findex device_del
 740Remove device @var{id}. @var{id} may be a short ID
 741or a QOM object path.
 742ETEXI
 743
 744    {
 745        .name       = "cpu",
 746        .args_type  = "index:i",
 747        .params     = "index",
 748        .help       = "set the default CPU",
 749        .cmd        = hmp_cpu,
 750    },
 751
 752STEXI
 753@item cpu @var{index}
 754@findex cpu
 755Set the default CPU.
 756ETEXI
 757
 758    {
 759        .name       = "mouse_move",
 760        .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
 761        .params     = "dx dy [dz]",
 762        .help       = "send mouse move events",
 763        .cmd        = hmp_mouse_move,
 764    },
 765
 766STEXI
 767@item mouse_move @var{dx} @var{dy} [@var{dz}]
 768@findex mouse_move
 769Move the active mouse to the specified coordinates @var{dx} @var{dy}
 770with optional scroll axis @var{dz}.
 771ETEXI
 772
 773    {
 774        .name       = "mouse_button",
 775        .args_type  = "button_state:i",
 776        .params     = "state",
 777        .help       = "change mouse button state (1=L, 2=M, 4=R)",
 778        .cmd        = hmp_mouse_button,
 779    },
 780
 781STEXI
 782@item mouse_button @var{val}
 783@findex mouse_button
 784Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
 785ETEXI
 786
 787    {
 788        .name       = "mouse_set",
 789        .args_type  = "index:i",
 790        .params     = "index",
 791        .help       = "set which mouse device receives events",
 792        .cmd        = hmp_mouse_set,
 793    },
 794
 795STEXI
 796@item mouse_set @var{index}
 797@findex mouse_set
 798Set which mouse device receives events at given @var{index}, index
 799can be obtained with
 800@example
 801info mice
 802@end example
 803ETEXI
 804
 805    {
 806        .name       = "wavcapture",
 807        .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
 808        .params     = "path [frequency [bits [channels]]]",
 809        .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
 810        .cmd        = hmp_wavcapture,
 811    },
 812STEXI
 813@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
 814@findex wavcapture
 815Capture audio into @var{filename}. Using sample rate @var{frequency}
 816bits per sample @var{bits} and number of channels @var{channels}.
 817
 818Defaults:
 819@itemize @minus
 820@item Sample rate = 44100 Hz - CD quality
 821@item Bits = 16
 822@item Number of channels = 2 - Stereo
 823@end itemize
 824ETEXI
 825
 826    {
 827        .name       = "stopcapture",
 828        .args_type  = "n:i",
 829        .params     = "capture index",
 830        .help       = "stop capture",
 831        .cmd        = hmp_stopcapture,
 832    },
 833STEXI
 834@item stopcapture @var{index}
 835@findex stopcapture
 836Stop capture with a given @var{index}, index can be obtained with
 837@example
 838info capture
 839@end example
 840ETEXI
 841
 842    {
 843        .name       = "memsave",
 844        .args_type  = "val:l,size:i,filename:s",
 845        .params     = "addr size file",
 846        .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
 847        .cmd        = hmp_memsave,
 848    },
 849
 850STEXI
 851@item memsave @var{addr} @var{size} @var{file}
 852@findex memsave
 853save to disk virtual memory dump starting at @var{addr} of size @var{size}.
 854ETEXI
 855
 856    {
 857        .name       = "pmemsave",
 858        .args_type  = "val:l,size:i,filename:s",
 859        .params     = "addr size file",
 860        .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
 861        .cmd        = hmp_pmemsave,
 862    },
 863
 864STEXI
 865@item pmemsave @var{addr} @var{size} @var{file}
 866@findex pmemsave
 867save to disk physical memory dump starting at @var{addr} of size @var{size}.
 868ETEXI
 869
 870    {
 871        .name       = "boot_set",
 872        .args_type  = "bootdevice:s",
 873        .params     = "bootdevice",
 874        .help       = "define new values for the boot device list",
 875        .cmd        = hmp_boot_set,
 876    },
 877
 878STEXI
 879@item boot_set @var{bootdevicelist}
 880@findex boot_set
 881Define new values for the boot device list. Those values will override
 882the values specified on the command line through the @code{-boot} option.
 883
 884The values that can be specified here depend on the machine type, but are
 885the same that can be specified in the @code{-boot} command line option.
 886ETEXI
 887
 888    {
 889        .name       = "nmi",
 890        .args_type  = "",
 891        .params     = "",
 892        .help       = "inject an NMI",
 893        .cmd        = hmp_nmi,
 894    },
 895STEXI
 896@item nmi @var{cpu}
 897@findex nmi
 898Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
 899
 900ETEXI
 901
 902    {
 903        .name       = "ringbuf_write",
 904        .args_type  = "device:s,data:s",
 905        .params     = "device data",
 906        .help       = "Write to a ring buffer character device",
 907        .cmd        = hmp_ringbuf_write,
 908        .command_completion = ringbuf_write_completion,
 909    },
 910
 911STEXI
 912@item ringbuf_write @var{device} @var{data}
 913@findex ringbuf_write
 914Write @var{data} to ring buffer character device @var{device}.
 915@var{data} must be a UTF-8 string.
 916
 917ETEXI
 918
 919    {
 920        .name       = "ringbuf_read",
 921        .args_type  = "device:s,size:i",
 922        .params     = "device size",
 923        .help       = "Read from a ring buffer character device",
 924        .cmd        = hmp_ringbuf_read,
 925        .command_completion = ringbuf_write_completion,
 926    },
 927
 928STEXI
 929@item ringbuf_read @var{device}
 930@findex ringbuf_read
 931Read and print up to @var{size} bytes from ring buffer character
 932device @var{device}.
 933Certain non-printable characters are printed \uXXXX, where XXXX is the
 934character code in hexadecimal.  Character \ is printed \\.
 935Bug: can screw up when the buffer contains invalid UTF-8 sequences,
 936NUL characters, after the ring buffer lost data, and when reading
 937stops because the size limit is reached.
 938
 939ETEXI
 940
 941    {
 942        .name       = "announce_self",
 943        .args_type  = "",
 944        .params     = "",
 945        .help       = "Trigger GARP/RARP announcements",
 946        .cmd        = hmp_announce_self,
 947    },
 948
 949STEXI
 950@item announce_self
 951@findex announce_self
 952Trigger a round of GARP/RARP broadcasts; this is useful for explicitly updating the
 953network infrastructure after a reconfiguration or some forms of migration.
 954The timings of the round are set by the migration announce parameters.
 955ETEXI
 956
 957    {
 958        .name       = "migrate",
 959        .args_type  = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
 960        .params     = "[-d] [-b] [-i] [-r] uri",
 961        .help       = "migrate to URI (using -d to not wait for completion)"
 962                      "\n\t\t\t -b for migration without shared storage with"
 963                      " full copy of disk\n\t\t\t -i for migration without "
 964                      "shared storage with incremental copy of disk "
 965                      "(base image shared between src and destination)"
 966                      "\n\t\t\t -r to resume a paused migration",
 967        .cmd        = hmp_migrate,
 968    },
 969
 970
 971STEXI
 972@item migrate [-d] [-b] [-i] @var{uri}
 973@findex migrate
 974Migrate to @var{uri} (using -d to not wait for completion).
 975        -b for migration with full copy of disk
 976        -i for migration with incremental copy of disk (base image is shared)
 977ETEXI
 978
 979    {
 980        .name       = "migrate_cancel",
 981        .args_type  = "",
 982        .params     = "",
 983        .help       = "cancel the current VM migration",
 984        .cmd        = hmp_migrate_cancel,
 985    },
 986
 987STEXI
 988@item migrate_cancel
 989@findex migrate_cancel
 990Cancel the current VM migration.
 991ETEXI
 992
 993    {
 994        .name       = "migrate_continue",
 995        .args_type  = "state:s",
 996        .params     = "state",
 997        .help       = "Continue migration from the given paused state",
 998        .cmd        = hmp_migrate_continue,
 999    },
1000STEXI
1001@item migrate_continue @var{state}
1002@findex migrate_continue
1003Continue migration from the paused state @var{state}
1004ETEXI
1005
1006    {
1007        .name       = "migrate_incoming",
1008        .args_type  = "uri:s",
1009        .params     = "uri",
1010        .help       = "Continue an incoming migration from an -incoming defer",
1011        .cmd        = hmp_migrate_incoming,
1012    },
1013
1014STEXI
1015@item migrate_incoming @var{uri}
1016@findex migrate_incoming
1017Continue an incoming migration using the @var{uri} (that has the same syntax
1018as the -incoming option).
1019ETEXI
1020
1021    {
1022        .name       = "migrate_recover",
1023        .args_type  = "uri:s",
1024        .params     = "uri",
1025        .help       = "Continue a paused incoming postcopy migration",
1026        .cmd        = hmp_migrate_recover,
1027    },
1028
1029STEXI
1030@item migrate_recover @var{uri}
1031@findex migrate_recover
1032Continue a paused incoming postcopy migration using the @var{uri}.
1033ETEXI
1034
1035    {
1036        .name       = "migrate_pause",
1037        .args_type  = "",
1038        .params     = "",
1039        .help       = "Pause an ongoing migration (postcopy-only)",
1040        .cmd        = hmp_migrate_pause,
1041    },
1042
1043STEXI
1044@item migrate_pause
1045@findex migrate_pause
1046Pause an ongoing migration.  Currently it only supports postcopy.
1047ETEXI
1048
1049    {
1050        .name       = "migrate_set_cache_size",
1051        .args_type  = "value:o",
1052        .params     = "value",
1053        .help       = "set cache size (in bytes) for XBZRLE migrations,"
1054                      "the cache size will be rounded down to the nearest "
1055                      "power of 2.\n"
1056                      "The cache size affects the number of cache misses."
1057                      "In case of a high cache miss ratio you need to increase"
1058                      " the cache size",
1059        .cmd        = hmp_migrate_set_cache_size,
1060    },
1061
1062STEXI
1063@item migrate_set_cache_size @var{value}
1064@findex migrate_set_cache_size
1065Set cache size to @var{value} (in bytes) for xbzrle migrations.
1066ETEXI
1067
1068    {
1069        .name       = "migrate_set_speed",
1070        .args_type  = "value:o",
1071        .params     = "value",
1072        .help       = "set maximum speed (in bytes) for migrations. "
1073        "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1074        .cmd        = hmp_migrate_set_speed,
1075    },
1076
1077STEXI
1078@item migrate_set_speed @var{value}
1079@findex migrate_set_speed
1080Set maximum speed to @var{value} (in bytes) for migrations.
1081ETEXI
1082
1083    {
1084        .name       = "migrate_set_downtime",
1085        .args_type  = "value:T",
1086        .params     = "value",
1087        .help       = "set maximum tolerated downtime (in seconds) for migrations",
1088        .cmd        = hmp_migrate_set_downtime,
1089    },
1090
1091STEXI
1092@item migrate_set_downtime @var{second}
1093@findex migrate_set_downtime
1094Set maximum tolerated downtime (in seconds) for migration.
1095ETEXI
1096
1097    {
1098        .name       = "migrate_set_capability",
1099        .args_type  = "capability:s,state:b",
1100        .params     = "capability state",
1101        .help       = "Enable/Disable the usage of a capability for migration",
1102        .cmd        = hmp_migrate_set_capability,
1103        .command_completion = migrate_set_capability_completion,
1104    },
1105
1106STEXI
1107@item migrate_set_capability @var{capability} @var{state}
1108@findex migrate_set_capability
1109Enable/Disable the usage of a capability @var{capability} for migration.
1110ETEXI
1111
1112    {
1113        .name       = "migrate_set_parameter",
1114        .args_type  = "parameter:s,value:s",
1115        .params     = "parameter value",
1116        .help       = "Set the parameter for migration",
1117        .cmd        = hmp_migrate_set_parameter,
1118        .command_completion = migrate_set_parameter_completion,
1119    },
1120
1121STEXI
1122@item migrate_set_parameter @var{parameter} @var{value}
1123@findex migrate_set_parameter
1124Set the parameter @var{parameter} for migration.
1125ETEXI
1126
1127    {
1128        .name       = "migrate_start_postcopy",
1129        .args_type  = "",
1130        .params     = "",
1131        .help       = "Followup to a migration command to switch the migration"
1132                      " to postcopy mode. The postcopy-ram capability must "
1133                      "be set on both source and destination before the "
1134                      "original migration command .",
1135        .cmd        = hmp_migrate_start_postcopy,
1136    },
1137
1138STEXI
1139@item migrate_start_postcopy
1140@findex migrate_start_postcopy
1141Switch in-progress migration to postcopy mode. Ignored after the end of
1142migration (or once already in postcopy).
1143ETEXI
1144
1145    {
1146        .name       = "x_colo_lost_heartbeat",
1147        .args_type  = "",
1148        .params     = "",
1149        .help       = "Tell COLO that heartbeat is lost,\n\t\t\t"
1150                      "a failover or takeover is needed.",
1151        .cmd = hmp_x_colo_lost_heartbeat,
1152    },
1153
1154STEXI
1155@item x_colo_lost_heartbeat
1156@findex x_colo_lost_heartbeat
1157Tell COLO that heartbeat is lost, a failover or takeover is needed.
1158ETEXI
1159
1160    {
1161        .name       = "client_migrate_info",
1162        .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1163        .params     = "protocol hostname port tls-port cert-subject",
1164        .help       = "set migration information for remote display",
1165        .cmd        = hmp_client_migrate_info,
1166    },
1167
1168STEXI
1169@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
1170@findex client_migrate_info
1171Set migration information for remote display.  This makes the server
1172ask the client to automatically reconnect using the new parameters
1173once migration finished successfully.  Only implemented for SPICE.
1174ETEXI
1175
1176    {
1177        .name       = "dump-guest-memory",
1178        .args_type  = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1179        .params     = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1180        .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1181                      "-p: do paging to get guest's memory mapping.\n\t\t\t"
1182                      "-d: return immediately (do not wait for completion).\n\t\t\t"
1183                      "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1184                      "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1185                      "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1186                      "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1187                      "    for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1188                      "begin: the starting physical address.\n\t\t\t"
1189                      "length: the memory size, in bytes.",
1190        .cmd        = hmp_dump_guest_memory,
1191    },
1192
1193STEXI
1194@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1195@item dump-guest-memory [-z|-l|-s|-w] @var{filename}
1196@findex dump-guest-memory
1197Dump guest memory to @var{protocol}. The file can be processed with crash or
1198gdb. Without -z|-l|-s|-w, the dump format is ELF.
1199        -p: do paging to get guest's memory mapping.
1200        -z: dump in kdump-compressed format, with zlib compression.
1201        -l: dump in kdump-compressed format, with lzo compression.
1202        -s: dump in kdump-compressed format, with snappy compression.
1203        -w: dump in Windows crashdump format (can be used instead of ELF-dump converting),
1204            for Windows x64 guests with vmcoreinfo driver only
1205  filename: dump file name.
1206     begin: the starting physical address. It's optional, and should be
1207            specified together with length.
1208    length: the memory size, in bytes. It's optional, and should be specified
1209            together with begin.
1210ETEXI
1211
1212#if defined(TARGET_S390X)
1213    {
1214        .name       = "dump-skeys",
1215        .args_type  = "filename:F",
1216        .params     = "",
1217        .help       = "Save guest storage keys into file 'filename'.\n",
1218        .cmd        = hmp_dump_skeys,
1219    },
1220#endif
1221
1222STEXI
1223@item dump-skeys @var{filename}
1224@findex dump-skeys
1225Save guest storage keys to a file.
1226ETEXI
1227
1228#if defined(TARGET_S390X)
1229    {
1230        .name       = "migration_mode",
1231        .args_type  = "mode:i",
1232        .params     = "mode",
1233        .help       = "Enables or disables migration mode\n",
1234        .cmd        = hmp_migrationmode,
1235    },
1236#endif
1237
1238STEXI
1239@item migration_mode @var{mode}
1240@findex migration_mode
1241Enables or disables migration mode.
1242ETEXI
1243
1244    {
1245        .name       = "snapshot_blkdev",
1246        .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1247        .params     = "[-n] device [new-image-file] [format]",
1248        .help       = "initiates a live snapshot\n\t\t\t"
1249                      "of device. If a new image file is specified, the\n\t\t\t"
1250                      "new image file will become the new root image.\n\t\t\t"
1251                      "If format is specified, the snapshot file will\n\t\t\t"
1252                      "be created in that format.\n\t\t\t"
1253                      "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1254                      "to reuse the image found in new-image-file, instead of\n\t\t\t"
1255                      "recreating it from scratch.",
1256        .cmd        = hmp_snapshot_blkdev,
1257    },
1258
1259STEXI
1260@item snapshot_blkdev
1261@findex snapshot_blkdev
1262Snapshot device, using snapshot file as target if provided
1263ETEXI
1264
1265    {
1266        .name       = "snapshot_blkdev_internal",
1267        .args_type  = "device:B,name:s",
1268        .params     = "device name",
1269        .help       = "take an internal snapshot of device.\n\t\t\t"
1270                      "The format of the image used by device must\n\t\t\t"
1271                      "support it, such as qcow2.\n\t\t\t",
1272        .cmd        = hmp_snapshot_blkdev_internal,
1273    },
1274
1275STEXI
1276@item snapshot_blkdev_internal
1277@findex snapshot_blkdev_internal
1278Take an internal snapshot on device if it support
1279ETEXI
1280
1281    {
1282        .name       = "snapshot_delete_blkdev_internal",
1283        .args_type  = "device:B,name:s,id:s?",
1284        .params     = "device name [id]",
1285        .help       = "delete an internal snapshot of device.\n\t\t\t"
1286                      "If id is specified, qemu will try delete\n\t\t\t"
1287                      "the snapshot matching both id and name.\n\t\t\t"
1288                      "The format of the image used by device must\n\t\t\t"
1289                      "support it, such as qcow2.\n\t\t\t",
1290        .cmd        = hmp_snapshot_delete_blkdev_internal,
1291    },
1292
1293STEXI
1294@item snapshot_delete_blkdev_internal
1295@findex snapshot_delete_blkdev_internal
1296Delete an internal snapshot on device if it support
1297ETEXI
1298
1299    {
1300        .name       = "drive_mirror",
1301        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1302        .params     = "[-n] [-f] device target [format]",
1303        .help       = "initiates live storage\n\t\t\t"
1304                      "migration for a device. The device's contents are\n\t\t\t"
1305                      "copied to the new image file, including data that\n\t\t\t"
1306                      "is written after the command is started.\n\t\t\t"
1307                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1308                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1309                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1310                      "so that the result does not need a backing file.\n\t\t\t",
1311        .cmd        = hmp_drive_mirror,
1312    },
1313STEXI
1314@item drive_mirror
1315@findex drive_mirror
1316Start mirroring a block device's writes to a new destination,
1317using the specified target.
1318ETEXI
1319
1320    {
1321        .name       = "drive_backup",
1322        .args_type  = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1323        .params     = "[-n] [-f] [-c] device target [format]",
1324        .help       = "initiates a point-in-time\n\t\t\t"
1325                      "copy for a device. The device's contents are\n\t\t\t"
1326                      "copied to the new image file, excluding data that\n\t\t\t"
1327                      "is written after the command is started.\n\t\t\t"
1328                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1329                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1330                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1331                      "so that the result does not need a backing file.\n\t\t\t"
1332                      "The -c flag requests QEMU to compress backup data\n\t\t\t"
1333                      "(if the target format supports it).\n\t\t\t",
1334        .cmd        = hmp_drive_backup,
1335    },
1336STEXI
1337@item drive_backup
1338@findex drive_backup
1339Start a point-in-time copy of a block device to a specificed target.
1340ETEXI
1341
1342    {
1343        .name       = "drive_add",
1344        .args_type  = "node:-n,pci_addr:s,opts:s",
1345        .params     = "[-n] [[<domain>:]<bus>:]<slot>\n"
1346                      "[file=file][,if=type][,bus=n]\n"
1347                      "[,unit=m][,media=d][,index=i]\n"
1348                      "[,snapshot=on|off][,cache=on|off]\n"
1349                      "[,readonly=on|off][,copy-on-read=on|off]",
1350        .help       = "add drive to PCI storage controller",
1351        .cmd        = hmp_drive_add,
1352    },
1353
1354STEXI
1355@item drive_add
1356@findex drive_add
1357Add drive to PCI storage controller.
1358ETEXI
1359
1360    {
1361        .name       = "pcie_aer_inject_error",
1362        .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1363                      "id:s,error_status:s,"
1364                      "header0:i?,header1:i?,header2:i?,header3:i?,"
1365                      "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1366        .params     = "[-a] [-c] id "
1367                      "<error_status> [<tlp header> [<tlp header prefix>]]",
1368        .help       = "inject pcie aer error\n\t\t\t"
1369                      " -a for advisory non fatal error\n\t\t\t"
1370                      " -c for correctable error\n\t\t\t"
1371                      "<id> = qdev device id\n\t\t\t"
1372                      "<error_status> = error string or 32bit\n\t\t\t"
1373                      "<tlb header> = 32bit x 4\n\t\t\t"
1374                      "<tlb header prefix> = 32bit x 4",
1375        .cmd        = hmp_pcie_aer_inject_error,
1376    },
1377
1378STEXI
1379@item pcie_aer_inject_error
1380@findex pcie_aer_inject_error
1381Inject PCIe AER error
1382ETEXI
1383
1384    {
1385        .name       = "netdev_add",
1386        .args_type  = "netdev:O",
1387        .params     = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1388        .help       = "add host network device",
1389        .cmd        = hmp_netdev_add,
1390        .command_completion = netdev_add_completion,
1391    },
1392
1393STEXI
1394@item netdev_add
1395@findex netdev_add
1396Add host network device.
1397ETEXI
1398
1399    {
1400        .name       = "netdev_del",
1401        .args_type  = "id:s",
1402        .params     = "id",
1403        .help       = "remove host network device",
1404        .cmd        = hmp_netdev_del,
1405        .command_completion = netdev_del_completion,
1406    },
1407
1408STEXI
1409@item netdev_del
1410@findex netdev_del
1411Remove host network device.
1412ETEXI
1413
1414    {
1415        .name       = "object_add",
1416        .args_type  = "object:O",
1417        .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1418        .help       = "create QOM object",
1419        .cmd        = hmp_object_add,
1420        .command_completion = object_add_completion,
1421    },
1422
1423STEXI
1424@item object_add
1425@findex object_add
1426Create QOM object.
1427ETEXI
1428
1429    {
1430        .name       = "object_del",
1431        .args_type  = "id:s",
1432        .params     = "id",
1433        .help       = "destroy QOM object",
1434        .cmd        = hmp_object_del,
1435        .command_completion = object_del_completion,
1436    },
1437
1438STEXI
1439@item object_del
1440@findex object_del
1441Destroy QOM object.
1442ETEXI
1443
1444#ifdef CONFIG_SLIRP
1445    {
1446        .name       = "hostfwd_add",
1447        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1448        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1449        .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1450        .cmd        = hmp_hostfwd_add,
1451    },
1452#endif
1453STEXI
1454@item hostfwd_add
1455@findex hostfwd_add
1456Redirect TCP or UDP connections from host to guest (requires -net user).
1457ETEXI
1458
1459#ifdef CONFIG_SLIRP
1460    {
1461        .name       = "hostfwd_remove",
1462        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1463        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1464        .help       = "remove host-to-guest TCP or UDP redirection",
1465        .cmd        = hmp_hostfwd_remove,
1466    },
1467
1468#endif
1469STEXI
1470@item hostfwd_remove
1471@findex hostfwd_remove
1472Remove host-to-guest TCP or UDP redirection.
1473ETEXI
1474
1475    {
1476        .name       = "balloon",
1477        .args_type  = "value:M",
1478        .params     = "target",
1479        .help       = "request VM to change its memory allocation (in MB)",
1480        .cmd        = hmp_balloon,
1481    },
1482
1483STEXI
1484@item balloon @var{value}
1485@findex balloon
1486Request VM to change its memory allocation to @var{value} (in MB).
1487ETEXI
1488
1489    {
1490        .name       = "set_link",
1491        .args_type  = "name:s,up:b",
1492        .params     = "name on|off",
1493        .help       = "change the link status of a network adapter",
1494        .cmd        = hmp_set_link,
1495        .command_completion = set_link_completion,
1496    },
1497
1498STEXI
1499@item set_link @var{name} [on|off]
1500@findex set_link
1501Switch link @var{name} on (i.e. up) or off (i.e. down).
1502ETEXI
1503
1504    {
1505        .name       = "watchdog_action",
1506        .args_type  = "action:s",
1507        .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1508        .help       = "change watchdog action",
1509        .cmd        = hmp_watchdog_action,
1510        .command_completion = watchdog_action_completion,
1511    },
1512
1513STEXI
1514@item watchdog_action
1515@findex watchdog_action
1516Change watchdog action.
1517ETEXI
1518
1519    {
1520        .name       = "acl_show",
1521        .args_type  = "aclname:s",
1522        .params     = "aclname",
1523        .help       = "list rules in the access control list",
1524        .cmd        = hmp_acl_show,
1525    },
1526
1527STEXI
1528@item acl_show @var{aclname}
1529@findex acl_show
1530List all the matching rules in the access control list, and the default
1531policy. There are currently two named access control lists,
1532@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1533certificate distinguished name, and SASL username respectively.
1534ETEXI
1535
1536    {
1537        .name       = "acl_policy",
1538        .args_type  = "aclname:s,policy:s",
1539        .params     = "aclname allow|deny",
1540        .help       = "set default access control list policy",
1541        .cmd        = hmp_acl_policy,
1542    },
1543
1544STEXI
1545@item acl_policy @var{aclname} @code{allow|deny}
1546@findex acl_policy
1547Set the default access control list policy, used in the event that
1548none of the explicit rules match. The default policy at startup is
1549always @code{deny}.
1550ETEXI
1551
1552    {
1553        .name       = "acl_add",
1554        .args_type  = "aclname:s,match:s,policy:s,index:i?",
1555        .params     = "aclname match allow|deny [index]",
1556        .help       = "add a match rule to the access control list",
1557        .cmd        = hmp_acl_add,
1558    },
1559
1560STEXI
1561@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1562@findex acl_add
1563Add a match rule to the access control list, allowing or denying access.
1564The match will normally be an exact username or x509 distinguished name,
1565but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1566allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1567normally be appended to the end of the ACL, but can be inserted
1568earlier in the list if the optional @var{index} parameter is supplied.
1569ETEXI
1570
1571    {
1572        .name       = "acl_remove",
1573        .args_type  = "aclname:s,match:s",
1574        .params     = "aclname match",
1575        .help       = "remove a match rule from the access control list",
1576        .cmd        = hmp_acl_remove,
1577    },
1578
1579STEXI
1580@item acl_remove @var{aclname} @var{match}
1581@findex acl_remove
1582Remove the specified match rule from the access control list.
1583ETEXI
1584
1585    {
1586        .name       = "acl_reset",
1587        .args_type  = "aclname:s",
1588        .params     = "aclname",
1589        .help       = "reset the access control list",
1590        .cmd        = hmp_acl_reset,
1591    },
1592
1593STEXI
1594@item acl_reset @var{aclname}
1595@findex acl_reset
1596Remove all matches from the access control list, and set the default
1597policy back to @code{deny}.
1598ETEXI
1599
1600    {
1601        .name       = "nbd_server_start",
1602        .args_type  = "all:-a,writable:-w,uri:s",
1603        .params     = "nbd_server_start [-a] [-w] host:port",
1604        .help       = "serve block devices on the given host and port",
1605        .cmd        = hmp_nbd_server_start,
1606    },
1607STEXI
1608@item nbd_server_start @var{host}:@var{port}
1609@findex nbd_server_start
1610Start an NBD server on the given host and/or port.  If the @option{-a}
1611option is included, all of the virtual machine's block devices that
1612have an inserted media on them are automatically exported; in this case,
1613the @option{-w} option makes the devices writable too.
1614ETEXI
1615
1616    {
1617        .name       = "nbd_server_add",
1618        .args_type  = "writable:-w,device:B,name:s?",
1619        .params     = "nbd_server_add [-w] device [name]",
1620        .help       = "export a block device via NBD",
1621        .cmd        = hmp_nbd_server_add,
1622    },
1623STEXI
1624@item nbd_server_add @var{device} [ @var{name} ]
1625@findex nbd_server_add
1626Export a block device through QEMU's NBD server, which must be started
1627beforehand with @command{nbd_server_start}.  The @option{-w} option makes the
1628exported device writable too.  The export name is controlled by @var{name},
1629defaulting to @var{device}.
1630ETEXI
1631
1632    {
1633        .name       = "nbd_server_remove",
1634        .args_type  = "force:-f,name:s",
1635        .params     = "nbd_server_remove [-f] name",
1636        .help       = "remove an export previously exposed via NBD",
1637        .cmd        = hmp_nbd_server_remove,
1638    },
1639STEXI
1640@item nbd_server_remove [-f] @var{name}
1641@findex nbd_server_remove
1642Stop exporting a block device through QEMU's NBD server, which was
1643previously started with @command{nbd_server_add}.  The @option{-f}
1644option forces the server to drop the export immediately even if
1645clients are connected; otherwise the command fails unless there are no
1646clients.
1647ETEXI
1648
1649    {
1650        .name       = "nbd_server_stop",
1651        .args_type  = "",
1652        .params     = "nbd_server_stop",
1653        .help       = "stop serving block devices using the NBD protocol",
1654        .cmd        = hmp_nbd_server_stop,
1655    },
1656STEXI
1657@item nbd_server_stop
1658@findex nbd_server_stop
1659Stop the QEMU embedded NBD server.
1660ETEXI
1661
1662
1663#if defined(TARGET_I386)
1664
1665    {
1666        .name       = "mce",
1667        .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1668        .params     = "[-b] cpu bank status mcgstatus addr misc",
1669        .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1670        .cmd        = hmp_mce,
1671    },
1672
1673#endif
1674STEXI
1675@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1676@findex mce (x86)
1677Inject an MCE on the given CPU (x86 only).
1678ETEXI
1679
1680    {
1681        .name       = "getfd",
1682        .args_type  = "fdname:s",
1683        .params     = "getfd name",
1684        .help       = "receive a file descriptor via SCM rights and assign it a name",
1685        .cmd        = hmp_getfd,
1686    },
1687
1688STEXI
1689@item getfd @var{fdname}
1690@findex getfd
1691If a file descriptor is passed alongside this command using the SCM_RIGHTS
1692mechanism on unix sockets, it is stored using the name @var{fdname} for
1693later use by other monitor commands.
1694ETEXI
1695
1696    {
1697        .name       = "closefd",
1698        .args_type  = "fdname:s",
1699        .params     = "closefd name",
1700        .help       = "close a file descriptor previously passed via SCM rights",
1701        .cmd        = hmp_closefd,
1702    },
1703
1704STEXI
1705@item closefd @var{fdname}
1706@findex closefd
1707Close the file descriptor previously assigned to @var{fdname} using the
1708@code{getfd} command. This is only needed if the file descriptor was never
1709used by another monitor command.
1710ETEXI
1711
1712    {
1713        .name       = "block_passwd",
1714        .args_type  = "device:B,password:s",
1715        .params     = "block_passwd device password",
1716        .help       = "set the password of encrypted block devices",
1717        .cmd        = hmp_block_passwd,
1718    },
1719
1720STEXI
1721@item block_passwd @var{device} @var{password}
1722@findex block_passwd
1723Set the encrypted device @var{device} password to @var{password}
1724
1725This command is now obsolete and will always return an error since 2.10
1726ETEXI
1727
1728    {
1729        .name       = "block_set_io_throttle",
1730        .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1731        .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1732        .help       = "change I/O throttle limits for a block drive",
1733        .cmd        = hmp_block_set_io_throttle,
1734    },
1735
1736STEXI
1737@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1738@findex block_set_io_throttle
1739Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}.
1740@var{device} can be a block device name, a qdev ID or a QOM path.
1741ETEXI
1742
1743    {
1744        .name       = "set_password",
1745        .args_type  = "protocol:s,password:s,connected:s?",
1746        .params     = "protocol password action-if-connected",
1747        .help       = "set spice/vnc password",
1748        .cmd        = hmp_set_password,
1749    },
1750
1751STEXI
1752@item set_password [ vnc | spice ] password [ action-if-connected ]
1753@findex set_password
1754Change spice/vnc password.  Use zero to make the password stay valid
1755forever.  @var{action-if-connected} specifies what should happen in
1756case a connection is established: @var{fail} makes the password change
1757fail.  @var{disconnect} changes the password and disconnects the
1758client.  @var{keep} changes the password and keeps the connection up.
1759@var{keep} is the default.
1760ETEXI
1761
1762    {
1763        .name       = "expire_password",
1764        .args_type  = "protocol:s,time:s",
1765        .params     = "protocol time",
1766        .help       = "set spice/vnc password expire-time",
1767        .cmd        = hmp_expire_password,
1768    },
1769
1770STEXI
1771@item expire_password [ vnc | spice ] expire-time
1772@findex expire_password
1773Specify when a password for spice/vnc becomes
1774invalid. @var{expire-time} accepts:
1775
1776@table @var
1777@item now
1778Invalidate password instantly.
1779
1780@item never
1781Password stays valid forever.
1782
1783@item +nsec
1784Password stays valid for @var{nsec} seconds starting now.
1785
1786@item nsec
1787Password is invalidated at the given time.  @var{nsec} are the seconds
1788passed since 1970, i.e. unix epoch.
1789
1790@end table
1791ETEXI
1792
1793    {
1794        .name       = "chardev-add",
1795        .args_type  = "args:s",
1796        .params     = "args",
1797        .help       = "add chardev",
1798        .cmd        = hmp_chardev_add,
1799        .command_completion = chardev_add_completion,
1800    },
1801
1802STEXI
1803@item chardev-add args
1804@findex chardev-add
1805chardev-add accepts the same parameters as the -chardev command line switch.
1806
1807ETEXI
1808
1809    {
1810        .name       = "chardev-change",
1811        .args_type  = "id:s,args:s",
1812        .params     = "id args",
1813        .help       = "change chardev",
1814        .cmd        = hmp_chardev_change,
1815    },
1816
1817STEXI
1818@item chardev-change args
1819@findex chardev-change
1820chardev-change accepts existing chardev @var{id} and then the same arguments
1821as the -chardev command line switch (except for "id").
1822
1823ETEXI
1824
1825    {
1826        .name       = "chardev-remove",
1827        .args_type  = "id:s",
1828        .params     = "id",
1829        .help       = "remove chardev",
1830        .cmd        = hmp_chardev_remove,
1831        .command_completion = chardev_remove_completion,
1832    },
1833
1834STEXI
1835@item chardev-remove id
1836@findex chardev-remove
1837Removes the chardev @var{id}.
1838
1839ETEXI
1840
1841    {
1842        .name       = "chardev-send-break",
1843        .args_type  = "id:s",
1844        .params     = "id",
1845        .help       = "send a break on chardev",
1846        .cmd        = hmp_chardev_send_break,
1847        .command_completion = chardev_remove_completion,
1848    },
1849
1850STEXI
1851@item chardev-send-break id
1852@findex chardev-send-break
1853Send a break on the chardev @var{id}.
1854
1855ETEXI
1856
1857    {
1858        .name       = "qemu-io",
1859        .args_type  = "device:B,command:s",
1860        .params     = "[device] \"[command]\"",
1861        .help       = "run a qemu-io command on a block device",
1862        .cmd        = hmp_qemu_io,
1863    },
1864
1865STEXI
1866@item qemu-io @var{device} @var{command}
1867@findex qemu-io
1868Executes a qemu-io command on the given block device.
1869
1870ETEXI
1871
1872    {
1873        .name       = "cpu-add",
1874        .args_type  = "id:i",
1875        .params     = "id",
1876        .help       = "add cpu (deprecated, use device_add instead)",
1877        .cmd        = hmp_cpu_add,
1878    },
1879
1880STEXI
1881@item cpu-add @var{id}
1882@findex cpu-add
1883Add CPU with id @var{id}.  This command is deprecated, please
1884+use @code{device_add} instead. For details, refer to
1885'docs/cpu-hotplug.rst'.
1886ETEXI
1887
1888    {
1889        .name       = "qom-list",
1890        .args_type  = "path:s?",
1891        .params     = "path",
1892        .help       = "list QOM properties",
1893        .cmd        = hmp_qom_list,
1894        .flags      = "p",
1895    },
1896
1897STEXI
1898@item qom-list [@var{path}]
1899Print QOM properties of object at location @var{path}
1900ETEXI
1901
1902    {
1903        .name       = "qom-set",
1904        .args_type  = "path:s,property:s,value:s",
1905        .params     = "path property value",
1906        .help       = "set QOM property",
1907        .cmd        = hmp_qom_set,
1908        .flags      = "p",
1909    },
1910
1911STEXI
1912@item qom-set @var{path} @var{property} @var{value}
1913Set QOM property @var{property} of object at location @var{path} to value @var{value}
1914ETEXI
1915
1916    {
1917        .name       = "info",
1918        .args_type  = "item:s?",
1919        .params     = "[subcommand]",
1920        .help       = "show various information about the system state",
1921        .cmd        = hmp_info_help,
1922        .sub_table  = info_cmds,
1923        .flags      = "p",
1924    },
1925
1926STEXI
1927@end table
1928ETEXI
1929