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        .mhandler.cmd = do_help_cmd,
  18    },
  19
  20STEXI
  21@item help or ? [@var{cmd}]
  22@findex help
  23Show the help for all commands or just for command @var{cmd}.
  24ETEXI
  25
  26    {
  27        .name       = "commit",
  28        .args_type  = "device:B",
  29        .params     = "device|all",
  30        .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
  31        .mhandler.cmd = do_commit,
  32    },
  33
  34STEXI
  35@item commit
  36@findex commit
  37Commit changes to the disk images (if -snapshot is used) or backing files.
  38ETEXI
  39
  40    {
  41        .name       = "q|quit",
  42        .args_type  = "",
  43        .params     = "",
  44        .help       = "quit the emulator",
  45        .user_print = monitor_user_noop,
  46        .mhandler.cmd = hmp_quit,
  47    },
  48
  49STEXI
  50@item q or quit
  51@findex quit
  52Quit the emulator.
  53ETEXI
  54
  55    {
  56        .name       = "block_resize",
  57        .args_type  = "device:B,size:o",
  58        .params     = "device size",
  59        .help       = "resize a block image",
  60        .mhandler.cmd = hmp_block_resize,
  61    },
  62
  63STEXI
  64@item block_resize
  65@findex block_resize
  66Resize a block image while a guest is running.  Usually requires guest
  67action to see the updated size.  Resize to a lower size is supported,
  68but should be used with extreme caution.  Note that this command only
  69resizes image files, it can not resize block devices like LVM volumes.
  70ETEXI
  71
  72    {
  73        .name       = "block_stream",
  74        .args_type  = "device:B,speed:o?,base:s?",
  75        .params     = "device [speed [base]]",
  76        .help       = "copy data from a backing file into a block device",
  77        .mhandler.cmd = hmp_block_stream,
  78    },
  79
  80STEXI
  81@item block_stream
  82@findex block_stream
  83Copy data from a backing file into a block device.
  84ETEXI
  85
  86    {
  87        .name       = "block_job_set_speed",
  88        .args_type  = "device:B,speed:o",
  89        .params     = "device speed",
  90        .help       = "set maximum speed for a background block operation",
  91        .mhandler.cmd = hmp_block_job_set_speed,
  92    },
  93
  94STEXI
  95@item block_job_set_speed
  96@findex block_job_set_speed
  97Set maximum speed for a background block operation.
  98ETEXI
  99
 100    {
 101        .name       = "block_job_cancel",
 102        .args_type  = "force:-f,device:B",
 103        .params     = "[-f] device",
 104        .help       = "stop an active background block operation (use -f"
 105                      "\n\t\t\t if the operation is currently paused)",
 106        .mhandler.cmd = hmp_block_job_cancel,
 107    },
 108
 109STEXI
 110@item block_job_cancel
 111@findex block_job_cancel
 112Stop an active background block operation (streaming, mirroring).
 113ETEXI
 114
 115    {
 116        .name       = "block_job_complete",
 117        .args_type  = "device:B",
 118        .params     = "device",
 119        .help       = "stop an active background block operation",
 120        .mhandler.cmd = hmp_block_job_complete,
 121    },
 122
 123STEXI
 124@item block_job_complete
 125@findex block_job_complete
 126Manually trigger completion of an active background block operation.
 127For mirroring, this will switch the device to the destination path.
 128ETEXI
 129
 130    {
 131        .name       = "block_job_pause",
 132        .args_type  = "device:B",
 133        .params     = "device",
 134        .help       = "pause an active background block operation",
 135        .mhandler.cmd = hmp_block_job_pause,
 136    },
 137
 138STEXI
 139@item block_job_pause
 140@findex block_job_pause
 141Pause an active block streaming operation.
 142ETEXI
 143
 144    {
 145        .name       = "block_job_resume",
 146        .args_type  = "device:B",
 147        .params     = "device",
 148        .help       = "resume a paused background block operation",
 149        .mhandler.cmd = hmp_block_job_resume,
 150    },
 151
 152STEXI
 153@item block_job_resume
 154@findex block_job_resume
 155Resume a paused block streaming operation.
 156ETEXI
 157
 158    {
 159        .name       = "eject",
 160        .args_type  = "force:-f,device:B",
 161        .params     = "[-f] device",
 162        .help       = "eject a removable medium (use -f to force it)",
 163        .mhandler.cmd = hmp_eject,
 164    },
 165
 166STEXI
 167@item eject [-f] @var{device}
 168@findex eject
 169Eject a removable medium (use -f to force it).
 170ETEXI
 171
 172    {
 173        .name       = "drive_del",
 174        .args_type  = "id:s",
 175        .params     = "device",
 176        .help       = "remove host block device",
 177        .user_print = monitor_user_noop,
 178        .mhandler.cmd_new = do_drive_del,
 179    },
 180
 181STEXI
 182@item drive_del @var{device}
 183@findex drive_del
 184Remove host block device.  The result is that guest generated IO is no longer
 185submitted against the host device underlying the disk.  Once a drive has
 186been deleted, the QEMU Block layer returns -EIO which results in IO
 187errors in the guest for applications that are reading/writing to the device.
 188These errors are always reported to the guest, regardless of the drive's error
 189actions (drive options rerror, werror).
 190ETEXI
 191
 192    {
 193        .name       = "change",
 194        .args_type  = "device:B,target:F,arg:s?",
 195        .params     = "device filename [format]",
 196        .help       = "change a removable medium, optional format",
 197        .mhandler.cmd = hmp_change,
 198    },
 199
 200STEXI
 201@item change @var{device} @var{setting}
 202@findex change
 203
 204Change the configuration of a device.
 205
 206@table @option
 207@item change @var{diskdevice} @var{filename} [@var{format}]
 208Change the medium for a removable disk device to point to @var{filename}. eg
 209
 210@example
 211(qemu) change ide1-cd0 /path/to/some.iso
 212@end example
 213
 214@var{format} is optional.
 215
 216@item change vnc @var{display},@var{options}
 217Change the configuration of the VNC server. The valid syntax for @var{display}
 218and @var{options} are described at @ref{sec_invocation}. eg
 219
 220@example
 221(qemu) change vnc localhost:1
 222@end example
 223
 224@item change vnc password [@var{password}]
 225
 226Change the password associated with the VNC server. If the new password is not
 227supplied, the monitor will prompt for it to be entered. VNC passwords are only
 228significant up to 8 letters. eg
 229
 230@example
 231(qemu) change vnc password
 232Password: ********
 233@end example
 234
 235@end table
 236ETEXI
 237
 238    {
 239        .name       = "screendump",
 240        .args_type  = "filename:F",
 241        .params     = "filename",
 242        .help       = "save screen into PPM image 'filename'",
 243        .mhandler.cmd = hmp_screen_dump,
 244    },
 245
 246STEXI
 247@item screendump @var{filename}
 248@findex screendump
 249Save screen into PPM image @var{filename}.
 250ETEXI
 251
 252    {
 253        .name       = "logfile",
 254        .args_type  = "filename:F",
 255        .params     = "filename",
 256        .help       = "output logs to 'filename'",
 257        .mhandler.cmd = do_logfile,
 258    },
 259
 260STEXI
 261@item logfile @var{filename}
 262@findex logfile
 263Output logs to @var{filename}.
 264ETEXI
 265
 266    {
 267        .name       = "trace-event",
 268        .args_type  = "name:s,option:b",
 269        .params     = "name on|off",
 270        .help       = "changes status of a specific trace event",
 271        .mhandler.cmd = do_trace_event_set_state,
 272    },
 273
 274STEXI
 275@item trace-event
 276@findex trace-event
 277changes status of a trace event
 278ETEXI
 279
 280#if defined(CONFIG_TRACE_SIMPLE)
 281    {
 282        .name       = "trace-file",
 283        .args_type  = "op:s?,arg:F?",
 284        .params     = "on|off|flush|set [arg]",
 285        .help       = "open, close, or flush trace file, or set a new file name",
 286        .mhandler.cmd = do_trace_file,
 287    },
 288
 289STEXI
 290@item trace-file on|off|flush
 291@findex trace-file
 292Open, close, or flush the trace file.  If no argument is given, the status of the trace file is displayed.
 293ETEXI
 294#endif
 295
 296    {
 297        .name       = "log",
 298        .args_type  = "items:s",
 299        .params     = "item1[,...]",
 300        .help       = "activate logging of the specified items",
 301        .mhandler.cmd = do_log,
 302    },
 303
 304STEXI
 305@item log @var{item1}[,...]
 306@findex log
 307Activate logging of the specified items.
 308ETEXI
 309
 310    {
 311        .name       = "savevm",
 312        .args_type  = "name:s?",
 313        .params     = "[tag|id]",
 314        .help       = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
 315        .mhandler.cmd = do_savevm,
 316    },
 317
 318STEXI
 319@item savevm [@var{tag}|@var{id}]
 320@findex savevm
 321Create a snapshot of the whole virtual machine. If @var{tag} is
 322provided, it is used as human readable identifier. If there is already
 323a snapshot with the same tag or ID, it is replaced. More info at
 324@ref{vm_snapshots}.
 325ETEXI
 326
 327    {
 328        .name       = "loadvm",
 329        .args_type  = "name:s",
 330        .params     = "tag|id",
 331        .help       = "restore a VM snapshot from its tag or id",
 332        .mhandler.cmd = do_loadvm,
 333    },
 334
 335STEXI
 336@item loadvm @var{tag}|@var{id}
 337@findex loadvm
 338Set the whole virtual machine to the snapshot identified by the tag
 339@var{tag} or the unique snapshot ID @var{id}.
 340ETEXI
 341
 342    {
 343        .name       = "delvm",
 344        .args_type  = "name:s",
 345        .params     = "tag|id",
 346        .help       = "delete a VM snapshot from its tag or id",
 347        .mhandler.cmd = do_delvm,
 348    },
 349
 350STEXI
 351@item delvm @var{tag}|@var{id}
 352@findex delvm
 353Delete the snapshot identified by @var{tag} or @var{id}.
 354ETEXI
 355
 356    {
 357        .name       = "singlestep",
 358        .args_type  = "option:s?",
 359        .params     = "[on|off]",
 360        .help       = "run emulation in singlestep mode or switch to normal mode",
 361        .mhandler.cmd = do_singlestep,
 362    },
 363
 364STEXI
 365@item singlestep [off]
 366@findex singlestep
 367Run the emulation in single step mode.
 368If called with option off, the emulation returns to normal mode.
 369ETEXI
 370
 371    {
 372        .name       = "stop",
 373        .args_type  = "",
 374        .params     = "",
 375        .help       = "stop emulation",
 376        .mhandler.cmd = hmp_stop,
 377    },
 378
 379STEXI
 380@item stop
 381@findex stop
 382Stop emulation.
 383ETEXI
 384
 385    {
 386        .name       = "c|cont",
 387        .args_type  = "",
 388        .params     = "",
 389        .help       = "resume emulation",
 390        .mhandler.cmd = hmp_cont,
 391    },
 392
 393STEXI
 394@item c or cont
 395@findex cont
 396Resume emulation.
 397ETEXI
 398
 399    {
 400        .name       = "system_wakeup",
 401        .args_type  = "",
 402        .params     = "",
 403        .help       = "wakeup guest from suspend",
 404        .mhandler.cmd = hmp_system_wakeup,
 405    },
 406
 407STEXI
 408@item system_wakeup
 409@findex system_wakeup
 410Wakeup guest from suspend.
 411ETEXI
 412
 413    {
 414        .name       = "gdbserver",
 415        .args_type  = "device:s?",
 416        .params     = "[device]",
 417        .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
 418        .mhandler.cmd = do_gdbserver,
 419    },
 420
 421STEXI
 422@item gdbserver [@var{port}]
 423@findex gdbserver
 424Start gdbserver session (default @var{port}=1234)
 425ETEXI
 426
 427    {
 428        .name       = "x",
 429        .args_type  = "fmt:/,addr:l",
 430        .params     = "/fmt addr",
 431        .help       = "virtual memory dump starting at 'addr'",
 432        .mhandler.cmd = do_memory_dump,
 433    },
 434
 435STEXI
 436@item x/fmt @var{addr}
 437@findex x
 438Virtual memory dump starting at @var{addr}.
 439ETEXI
 440
 441    {
 442        .name       = "xp",
 443        .args_type  = "fmt:/,addr:l",
 444        .params     = "/fmt addr",
 445        .help       = "physical memory dump starting at 'addr'",
 446        .mhandler.cmd = do_physical_memory_dump,
 447    },
 448
 449STEXI
 450@item xp /@var{fmt} @var{addr}
 451@findex xp
 452Physical memory dump starting at @var{addr}.
 453
 454@var{fmt} is a format which tells the command how to format the
 455data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
 456
 457@table @var
 458@item count
 459is the number of items to be dumped.
 460
 461@item format
 462can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
 463c (char) or i (asm instruction).
 464
 465@item size
 466can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
 467@code{h} or @code{w} can be specified with the @code{i} format to
 468respectively select 16 or 32 bit code instruction size.
 469
 470@end table
 471
 472Examples:
 473@itemize
 474@item
 475Dump 10 instructions at the current instruction pointer:
 476@example
 477(qemu) x/10i $eip
 4780x90107063:  ret
 4790x90107064:  sti
 4800x90107065:  lea    0x0(%esi,1),%esi
 4810x90107069:  lea    0x0(%edi,1),%edi
 4820x90107070:  ret
 4830x90107071:  jmp    0x90107080
 4840x90107073:  nop
 4850x90107074:  nop
 4860x90107075:  nop
 4870x90107076:  nop
 488@end example
 489
 490@item
 491Dump 80 16 bit values at the start of the video memory.
 492@smallexample
 493(qemu) xp/80hx 0xb8000
 4940x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
 4950x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
 4960x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
 4970x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
 4980x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
 4990x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
 5000x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5010x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5020x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 5030x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 504@end smallexample
 505@end itemize
 506ETEXI
 507
 508    {
 509        .name       = "p|print",
 510        .args_type  = "fmt:/,val:l",
 511        .params     = "/fmt expr",
 512        .help       = "print expression value (use $reg for CPU register access)",
 513        .mhandler.cmd = do_print,
 514    },
 515
 516STEXI
 517@item p or print/@var{fmt} @var{expr}
 518@findex print
 519
 520Print expression value. Only the @var{format} part of @var{fmt} is
 521used.
 522ETEXI
 523
 524    {
 525        .name       = "i",
 526        .args_type  = "fmt:/,addr:i,index:i.",
 527        .params     = "/fmt addr",
 528        .help       = "I/O port read",
 529        .mhandler.cmd = do_ioport_read,
 530    },
 531
 532STEXI
 533Read I/O port.
 534ETEXI
 535
 536    {
 537        .name       = "o",
 538        .args_type  = "fmt:/,addr:i,val:i",
 539        .params     = "/fmt addr value",
 540        .help       = "I/O port write",
 541        .mhandler.cmd = do_ioport_write,
 542    },
 543
 544STEXI
 545Write to I/O port.
 546ETEXI
 547
 548    {
 549        .name       = "sendkey",
 550        .args_type  = "keys:s,hold-time:i?",
 551        .params     = "keys [hold_ms]",
 552        .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
 553        .mhandler.cmd = hmp_send_key,
 554    },
 555
 556STEXI
 557@item sendkey @var{keys}
 558@findex sendkey
 559
 560Send @var{keys} to the guest. @var{keys} could be the name of the
 561key or the raw value in hexadecimal format. Use @code{-} to press
 562several keys simultaneously. Example:
 563@example
 564sendkey ctrl-alt-f1
 565@end example
 566
 567This command is useful to send keys that your graphical user interface
 568intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
 569ETEXI
 570
 571    {
 572        .name       = "system_reset",
 573        .args_type  = "",
 574        .params     = "",
 575        .help       = "reset the system",
 576        .mhandler.cmd = hmp_system_reset,
 577    },
 578
 579STEXI
 580@item system_reset
 581@findex system_reset
 582
 583Reset the system.
 584ETEXI
 585
 586    {
 587        .name       = "system_powerdown",
 588        .args_type  = "",
 589        .params     = "",
 590        .help       = "send system power down event",
 591        .mhandler.cmd = hmp_system_powerdown,
 592    },
 593
 594STEXI
 595@item system_powerdown
 596@findex system_powerdown
 597
 598Power down the system (if supported).
 599ETEXI
 600
 601    {
 602        .name       = "sum",
 603        .args_type  = "start:i,size:i",
 604        .params     = "addr size",
 605        .help       = "compute the checksum of a memory region",
 606        .mhandler.cmd = do_sum,
 607    },
 608
 609STEXI
 610@item sum @var{addr} @var{size}
 611@findex sum
 612
 613Compute the checksum of a memory region.
 614ETEXI
 615
 616    {
 617        .name       = "usb_add",
 618        .args_type  = "devname:s",
 619        .params     = "device",
 620        .help       = "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')",
 621        .mhandler.cmd = do_usb_add,
 622    },
 623
 624STEXI
 625@item usb_add @var{devname}
 626@findex usb_add
 627
 628Add the USB device @var{devname}.  For details of available devices see
 629@ref{usb_devices}
 630ETEXI
 631
 632    {
 633        .name       = "usb_del",
 634        .args_type  = "devname:s",
 635        .params     = "device",
 636        .help       = "remove USB device 'bus.addr'",
 637        .mhandler.cmd = do_usb_del,
 638    },
 639
 640STEXI
 641@item usb_del @var{devname}
 642@findex usb_del
 643
 644Remove the USB device @var{devname} from the QEMU virtual USB
 645hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
 646command @code{info usb} to see the devices you can remove.
 647ETEXI
 648
 649    {
 650        .name       = "device_add",
 651        .args_type  = "device:O",
 652        .params     = "driver[,prop=value][,...]",
 653        .help       = "add device, like -device on the command line",
 654        .user_print = monitor_user_noop,
 655        .mhandler.cmd_new = do_device_add,
 656    },
 657
 658STEXI
 659@item device_add @var{config}
 660@findex device_add
 661
 662Add device.
 663ETEXI
 664
 665    {
 666        .name       = "device_del",
 667        .args_type  = "id:s",
 668        .params     = "device",
 669        .help       = "remove device",
 670        .mhandler.cmd = hmp_device_del,
 671    },
 672
 673STEXI
 674@item device_del @var{id}
 675@findex device_del
 676
 677Remove device @var{id}.
 678ETEXI
 679
 680    {
 681        .name       = "cpu",
 682        .args_type  = "index:i",
 683        .params     = "index",
 684        .help       = "set the default CPU",
 685        .mhandler.cmd = hmp_cpu,
 686    },
 687
 688STEXI
 689@item cpu @var{index}
 690@findex cpu
 691Set the default CPU.
 692ETEXI
 693
 694    {
 695        .name       = "mouse_move",
 696        .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
 697        .params     = "dx dy [dz]",
 698        .help       = "send mouse move events",
 699        .mhandler.cmd = do_mouse_move,
 700    },
 701
 702STEXI
 703@item mouse_move @var{dx} @var{dy} [@var{dz}]
 704@findex mouse_move
 705Move the active mouse to the specified coordinates @var{dx} @var{dy}
 706with optional scroll axis @var{dz}.
 707ETEXI
 708
 709    {
 710        .name       = "mouse_button",
 711        .args_type  = "button_state:i",
 712        .params     = "state",
 713        .help       = "change mouse button state (1=L, 2=M, 4=R)",
 714        .mhandler.cmd = do_mouse_button,
 715    },
 716
 717STEXI
 718@item mouse_button @var{val}
 719@findex mouse_button
 720Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
 721ETEXI
 722
 723    {
 724        .name       = "mouse_set",
 725        .args_type  = "index:i",
 726        .params     = "index",
 727        .help       = "set which mouse device receives events",
 728        .mhandler.cmd = do_mouse_set,
 729    },
 730
 731STEXI
 732@item mouse_set @var{index}
 733@findex mouse_set
 734Set which mouse device receives events at given @var{index}, index
 735can be obtained with
 736@example
 737info mice
 738@end example
 739ETEXI
 740
 741    {
 742        .name       = "wavcapture",
 743        .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
 744        .params     = "path [frequency [bits [channels]]]",
 745        .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
 746        .mhandler.cmd = do_wav_capture,
 747    },
 748STEXI
 749@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
 750@findex wavcapture
 751Capture audio into @var{filename}. Using sample rate @var{frequency}
 752bits per sample @var{bits} and number of channels @var{channels}.
 753
 754Defaults:
 755@itemize @minus
 756@item Sample rate = 44100 Hz - CD quality
 757@item Bits = 16
 758@item Number of channels = 2 - Stereo
 759@end itemize
 760ETEXI
 761
 762    {
 763        .name       = "stopcapture",
 764        .args_type  = "n:i",
 765        .params     = "capture index",
 766        .help       = "stop capture",
 767        .mhandler.cmd = do_stop_capture,
 768    },
 769STEXI
 770@item stopcapture @var{index}
 771@findex stopcapture
 772Stop capture with a given @var{index}, index can be obtained with
 773@example
 774info capture
 775@end example
 776ETEXI
 777
 778    {
 779        .name       = "memsave",
 780        .args_type  = "val:l,size:i,filename:s",
 781        .params     = "addr size file",
 782        .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
 783        .mhandler.cmd = hmp_memsave,
 784    },
 785
 786STEXI
 787@item memsave @var{addr} @var{size} @var{file}
 788@findex memsave
 789save to disk virtual memory dump starting at @var{addr} of size @var{size}.
 790ETEXI
 791
 792    {
 793        .name       = "pmemsave",
 794        .args_type  = "val:l,size:i,filename:s",
 795        .params     = "addr size file",
 796        .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
 797        .mhandler.cmd = hmp_pmemsave,
 798    },
 799
 800STEXI
 801@item pmemsave @var{addr} @var{size} @var{file}
 802@findex pmemsave
 803save to disk physical memory dump starting at @var{addr} of size @var{size}.
 804ETEXI
 805
 806    {
 807        .name       = "boot_set",
 808        .args_type  = "bootdevice:s",
 809        .params     = "bootdevice",
 810        .help       = "define new values for the boot device list",
 811        .mhandler.cmd = do_boot_set,
 812    },
 813
 814STEXI
 815@item boot_set @var{bootdevicelist}
 816@findex boot_set
 817
 818Define new values for the boot device list. Those values will override
 819the values specified on the command line through the @code{-boot} option.
 820
 821The values that can be specified here depend on the machine type, but are
 822the same that can be specified in the @code{-boot} command line option.
 823ETEXI
 824
 825#if defined(TARGET_I386)
 826    {
 827        .name       = "nmi",
 828        .args_type  = "",
 829        .params     = "",
 830        .help       = "inject an NMI on all guest's CPUs",
 831        .mhandler.cmd = hmp_inject_nmi,
 832    },
 833#endif
 834STEXI
 835@item nmi @var{cpu}
 836@findex nmi
 837Inject an NMI on the given CPU (x86 only).
 838
 839ETEXI
 840
 841    {
 842        .name       = "ringbuf_write",
 843        .args_type  = "device:s,data:s",
 844        .params     = "device data",
 845        .help       = "Write to a ring buffer character device",
 846        .mhandler.cmd = hmp_ringbuf_write,
 847    },
 848
 849STEXI
 850@item ringbuf_write @var{device} @var{data}
 851@findex ringbuf_write
 852Write @var{data} to ring buffer character device @var{device}.
 853@var{data} must be a UTF-8 string.
 854
 855ETEXI
 856
 857    {
 858        .name       = "ringbuf_read",
 859        .args_type  = "device:s,size:i",
 860        .params     = "device size",
 861        .help       = "Read from a ring buffer character device",
 862        .mhandler.cmd = hmp_ringbuf_read,
 863    },
 864
 865STEXI
 866@item ringbuf_read @var{device}
 867@findex ringbuf_read
 868Read and print up to @var{size} bytes from ring buffer character
 869device @var{device}.
 870Certain non-printable characters are printed \uXXXX, where XXXX is the
 871character code in hexadecimal.  Character \ is printed \\.
 872Bug: can screw up when the buffer contains invalid UTF-8 sequences,
 873NUL characters, after the ring buffer lost data, and when reading
 874stops because the size limit is reached.
 875
 876ETEXI
 877
 878    {
 879        .name       = "migrate",
 880        .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
 881        .params     = "[-d] [-b] [-i] uri",
 882        .help       = "migrate to URI (using -d to not wait for completion)"
 883                      "\n\t\t\t -b for migration without shared storage with"
 884                      " full copy of disk\n\t\t\t -i for migration without "
 885                      "shared storage with incremental copy of disk "
 886                      "(base image shared between src and destination)",
 887        .mhandler.cmd = hmp_migrate,
 888    },
 889
 890
 891STEXI
 892@item migrate [-d] [-b] [-i] @var{uri}
 893@findex migrate
 894Migrate to @var{uri} (using -d to not wait for completion).
 895        -b for migration with full copy of disk
 896        -i for migration with incremental copy of disk (base image is shared)
 897ETEXI
 898
 899    {
 900        .name       = "migrate_cancel",
 901        .args_type  = "",
 902        .params     = "",
 903        .help       = "cancel the current VM migration",
 904        .mhandler.cmd = hmp_migrate_cancel,
 905    },
 906
 907STEXI
 908@item migrate_cancel
 909@findex migrate_cancel
 910Cancel the current VM migration.
 911
 912ETEXI
 913
 914    {
 915        .name       = "migrate_set_cache_size",
 916        .args_type  = "value:o",
 917        .params     = "value",
 918        .help       = "set cache size (in bytes) for XBZRLE migrations,"
 919                      "the cache size will be rounded down to the nearest "
 920                      "power of 2.\n"
 921                      "The cache size affects the number of cache misses."
 922                      "In case of a high cache miss ratio you need to increase"
 923                      " the cache size",
 924        .mhandler.cmd = hmp_migrate_set_cache_size,
 925    },
 926
 927STEXI
 928@item migrate_set_cache_size @var{value}
 929@findex migrate_set_cache_size
 930Set cache size to @var{value} (in bytes) for xbzrle migrations.
 931ETEXI
 932
 933    {
 934        .name       = "migrate_set_speed",
 935        .args_type  = "value:o",
 936        .params     = "value",
 937        .help       = "set maximum speed (in bytes) for migrations. "
 938        "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
 939        .mhandler.cmd = hmp_migrate_set_speed,
 940    },
 941
 942STEXI
 943@item migrate_set_speed @var{value}
 944@findex migrate_set_speed
 945Set maximum speed to @var{value} (in bytes) for migrations.
 946ETEXI
 947
 948    {
 949        .name       = "migrate_set_downtime",
 950        .args_type  = "value:T",
 951        .params     = "value",
 952        .help       = "set maximum tolerated downtime (in seconds) for migrations",
 953        .mhandler.cmd = hmp_migrate_set_downtime,
 954    },
 955
 956STEXI
 957@item migrate_set_downtime @var{second}
 958@findex migrate_set_downtime
 959Set maximum tolerated downtime (in seconds) for migration.
 960ETEXI
 961
 962    {
 963        .name       = "migrate_set_capability",
 964        .args_type  = "capability:s,state:b",
 965        .params     = "capability state",
 966        .help       = "Enable/Disable the usage of a capability for migration",
 967        .mhandler.cmd = hmp_migrate_set_capability,
 968    },
 969
 970STEXI
 971@item migrate_set_capability @var{capability} @var{state}
 972@findex migrate_set_capability
 973Enable/Disable the usage of a capability @var{capability} for migration.
 974ETEXI
 975
 976    {
 977        .name       = "client_migrate_info",
 978        .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
 979        .params     = "protocol hostname port tls-port cert-subject",
 980        .help       = "send migration info to spice/vnc client",
 981        .user_print = monitor_user_noop,
 982        .mhandler.cmd_async = client_migrate_info,
 983        .flags      = MONITOR_CMD_ASYNC,
 984    },
 985
 986STEXI
 987@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
 988@findex client_migrate_info
 989Set the spice/vnc connection info for the migration target.  The spice/vnc
 990server will ask the spice/vnc client to automatically reconnect using the
 991new parameters (if specified) once the vm migration finished successfully.
 992ETEXI
 993
 994    {
 995        .name       = "dump-guest-memory",
 996        .args_type  = "paging:-p,filename:F,begin:i?,length:i?",
 997        .params     = "[-p] filename [begin] [length]",
 998        .help       = "dump guest memory to file"
 999                      "\n\t\t\t begin(optional): the starting physical address"
1000                      "\n\t\t\t length(optional): the memory size, in bytes",
1001        .mhandler.cmd = hmp_dump_guest_memory,
1002    },
1003
1004
1005STEXI
1006@item dump-guest-memory [-p] @var{protocol} @var{begin} @var{length}
1007@findex dump-guest-memory
1008Dump guest memory to @var{protocol}. The file can be processed with crash or
1009gdb.
1010  filename: dump file name
1011    paging: do paging to get guest's memory mapping
1012     begin: the starting physical address. It's optional, and should be
1013            specified with length together.
1014    length: the memory size, in bytes. It's optional, and should be specified
1015            with begin together.
1016ETEXI
1017
1018    {
1019        .name       = "snapshot_blkdev",
1020        .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1021        .params     = "[-n] device [new-image-file] [format]",
1022        .help       = "initiates a live snapshot\n\t\t\t"
1023                      "of device. If a new image file is specified, the\n\t\t\t"
1024                      "new image file will become the new root image.\n\t\t\t"
1025                      "If format is specified, the snapshot file will\n\t\t\t"
1026                      "be created in that format. Otherwise the\n\t\t\t"
1027                      "snapshot will be internal! (currently unsupported).\n\t\t\t"
1028                      "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1029                      "to reuse the image found in new-image-file, instead of\n\t\t\t"
1030                      "recreating it from scratch.",
1031        .mhandler.cmd = hmp_snapshot_blkdev,
1032    },
1033
1034STEXI
1035@item snapshot_blkdev
1036@findex snapshot_blkdev
1037Snapshot device, using snapshot file as target if provided
1038ETEXI
1039
1040    {
1041        .name       = "drive_mirror",
1042        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1043        .params     = "[-n] [-f] device target [format]",
1044        .help       = "initiates live storage\n\t\t\t"
1045                      "migration for a device. The device's contents are\n\t\t\t"
1046                      "copied to the new image file, including data that\n\t\t\t"
1047                      "is written after the command is started.\n\t\t\t"
1048                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1049                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1050                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1051                      "so that the result does not need a backing file.\n\t\t\t",
1052        .mhandler.cmd = hmp_drive_mirror,
1053    },
1054STEXI
1055@item drive_mirror
1056@findex drive_mirror
1057Start mirroring a block device's writes to a new destination,
1058using the specified target.
1059ETEXI
1060
1061    {
1062        .name       = "drive_backup",
1063        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1064        .params     = "[-n] [-f] device target [format]",
1065        .help       = "initiates a point-in-time\n\t\t\t"
1066                      "copy for a device. The device's contents are\n\t\t\t"
1067                      "copied to the new image file, excluding data that\n\t\t\t"
1068                      "is written after the command is started.\n\t\t\t"
1069                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1070                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1071                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1072                      "so that the result does not need a backing file.\n\t\t\t",
1073        .mhandler.cmd = hmp_drive_backup,
1074    },
1075STEXI
1076@item drive_backup
1077@findex drive_backup
1078Start a point-in-time copy of a block device to a specificed target.
1079ETEXI
1080
1081    {
1082        .name       = "drive_add",
1083        .args_type  = "pci_addr:s,opts:s",
1084        .params     = "[[<domain>:]<bus>:]<slot>\n"
1085                      "[file=file][,if=type][,bus=n]\n"
1086                      "[,unit=m][,media=d][,index=i]\n"
1087                      "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1088                      "[,snapshot=on|off][,cache=on|off]\n"
1089                      "[,readonly=on|off][,copy-on-read=on|off]",
1090        .help       = "add drive to PCI storage controller",
1091        .mhandler.cmd = drive_hot_add,
1092    },
1093
1094STEXI
1095@item drive_add
1096@findex drive_add
1097Add drive to PCI storage controller.
1098ETEXI
1099
1100#if defined(CONFIG_PCI_HOTPLUG_OLD)
1101    {
1102        .name       = "pci_add",
1103        .args_type  = "pci_addr:s,type:s,opts:s?",
1104        .params     = "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
1105        .help       = "hot-add PCI device",
1106        .mhandler.cmd = pci_device_hot_add,
1107    },
1108#endif
1109
1110STEXI
1111@item pci_add
1112@findex pci_add
1113Hot-add PCI device.
1114ETEXI
1115
1116#if defined(CONFIG_PCI_HOTPLUG_OLD)
1117    {
1118        .name       = "pci_del",
1119        .args_type  = "pci_addr:s",
1120        .params     = "[[<domain>:]<bus>:]<slot>",
1121        .help       = "hot remove PCI device",
1122        .mhandler.cmd = do_pci_device_hot_remove,
1123    },
1124#endif
1125
1126STEXI
1127@item pci_del
1128@findex pci_del
1129Hot remove PCI device.
1130ETEXI
1131
1132    {
1133        .name       = "pcie_aer_inject_error",
1134        .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1135                      "id:s,error_status:s,"
1136                      "header0:i?,header1:i?,header2:i?,header3:i?,"
1137                      "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1138        .params     = "[-a] [-c] id "
1139                      "<error_status> [<tlp header> [<tlp header prefix>]]",
1140        .help       = "inject pcie aer error\n\t\t\t"
1141                      " -a for advisory non fatal error\n\t\t\t"
1142                      " -c for correctable error\n\t\t\t"
1143                      "<id> = qdev device id\n\t\t\t"
1144                      "<error_status> = error string or 32bit\n\t\t\t"
1145                      "<tlb header> = 32bit x 4\n\t\t\t"
1146                      "<tlb header prefix> = 32bit x 4",
1147        .user_print  = pcie_aer_inject_error_print,
1148        .mhandler.cmd_new = do_pcie_aer_inject_error,
1149    },
1150
1151STEXI
1152@item pcie_aer_inject_error
1153@findex pcie_aer_inject_error
1154Inject PCIe AER error
1155ETEXI
1156
1157    {
1158        .name       = "host_net_add",
1159        .args_type  = "device:s,opts:s?",
1160        .params     = "tap|user|socket|vde|dump [options]",
1161        .help       = "add host VLAN client",
1162        .mhandler.cmd = net_host_device_add,
1163    },
1164
1165STEXI
1166@item host_net_add
1167@findex host_net_add
1168Add host VLAN client.
1169ETEXI
1170
1171    {
1172        .name       = "host_net_remove",
1173        .args_type  = "vlan_id:i,device:s",
1174        .params     = "vlan_id name",
1175        .help       = "remove host VLAN client",
1176        .mhandler.cmd = net_host_device_remove,
1177    },
1178
1179STEXI
1180@item host_net_remove
1181@findex host_net_remove
1182Remove host VLAN client.
1183ETEXI
1184
1185    {
1186        .name       = "netdev_add",
1187        .args_type  = "netdev:O",
1188        .params     = "[user|tap|socket|hubport],id=str[,prop=value][,...]",
1189        .help       = "add host network device",
1190        .mhandler.cmd = hmp_netdev_add,
1191    },
1192
1193STEXI
1194@item netdev_add
1195@findex netdev_add
1196Add host network device.
1197ETEXI
1198
1199    {
1200        .name       = "netdev_del",
1201        .args_type  = "id:s",
1202        .params     = "id",
1203        .help       = "remove host network device",
1204        .mhandler.cmd = hmp_netdev_del,
1205    },
1206
1207STEXI
1208@item netdev_del
1209@findex netdev_del
1210Remove host network device.
1211ETEXI
1212
1213#ifdef CONFIG_SLIRP
1214    {
1215        .name       = "hostfwd_add",
1216        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1217        .params     = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1218        .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1219        .mhandler.cmd = net_slirp_hostfwd_add,
1220    },
1221#endif
1222STEXI
1223@item hostfwd_add
1224@findex hostfwd_add
1225Redirect TCP or UDP connections from host to guest (requires -net user).
1226ETEXI
1227
1228#ifdef CONFIG_SLIRP
1229    {
1230        .name       = "hostfwd_remove",
1231        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1232        .params     = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1233        .help       = "remove host-to-guest TCP or UDP redirection",
1234        .mhandler.cmd = net_slirp_hostfwd_remove,
1235    },
1236
1237#endif
1238STEXI
1239@item hostfwd_remove
1240@findex hostfwd_remove
1241Remove host-to-guest TCP or UDP redirection.
1242ETEXI
1243
1244    {
1245        .name       = "balloon",
1246        .args_type  = "value:M",
1247        .params     = "target",
1248        .help       = "request VM to change its memory allocation (in MB)",
1249        .mhandler.cmd = hmp_balloon,
1250    },
1251
1252STEXI
1253@item balloon @var{value}
1254@findex balloon
1255Request VM to change its memory allocation to @var{value} (in MB).
1256ETEXI
1257
1258    {
1259        .name       = "set_link",
1260        .args_type  = "name:s,up:b",
1261        .params     = "name on|off",
1262        .help       = "change the link status of a network adapter",
1263        .mhandler.cmd = hmp_set_link,
1264    },
1265
1266STEXI
1267@item set_link @var{name} [on|off]
1268@findex set_link
1269Switch link @var{name} on (i.e. up) or off (i.e. down).
1270ETEXI
1271
1272    {
1273        .name       = "watchdog_action",
1274        .args_type  = "action:s",
1275        .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1276        .help       = "change watchdog action",
1277        .mhandler.cmd = do_watchdog_action,
1278    },
1279
1280STEXI
1281@item watchdog_action
1282@findex watchdog_action
1283Change watchdog action.
1284ETEXI
1285
1286    {
1287        .name       = "acl_show",
1288        .args_type  = "aclname:s",
1289        .params     = "aclname",
1290        .help       = "list rules in the access control list",
1291        .mhandler.cmd = do_acl_show,
1292    },
1293
1294STEXI
1295@item acl_show @var{aclname}
1296@findex acl_show
1297List all the matching rules in the access control list, and the default
1298policy. There are currently two named access control lists,
1299@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1300certificate distinguished name, and SASL username respectively.
1301ETEXI
1302
1303    {
1304        .name       = "acl_policy",
1305        .args_type  = "aclname:s,policy:s",
1306        .params     = "aclname allow|deny",
1307        .help       = "set default access control list policy",
1308        .mhandler.cmd = do_acl_policy,
1309    },
1310
1311STEXI
1312@item acl_policy @var{aclname} @code{allow|deny}
1313@findex acl_policy
1314Set the default access control list policy, used in the event that
1315none of the explicit rules match. The default policy at startup is
1316always @code{deny}.
1317ETEXI
1318
1319    {
1320        .name       = "acl_add",
1321        .args_type  = "aclname:s,match:s,policy:s,index:i?",
1322        .params     = "aclname match allow|deny [index]",
1323        .help       = "add a match rule to the access control list",
1324        .mhandler.cmd = do_acl_add,
1325    },
1326
1327STEXI
1328@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1329@findex acl_add
1330Add a match rule to the access control list, allowing or denying access.
1331The match will normally be an exact username or x509 distinguished name,
1332but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1333allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1334normally be appended to the end of the ACL, but can be inserted
1335earlier in the list if the optional @var{index} parameter is supplied.
1336ETEXI
1337
1338    {
1339        .name       = "acl_remove",
1340        .args_type  = "aclname:s,match:s",
1341        .params     = "aclname match",
1342        .help       = "remove a match rule from the access control list",
1343        .mhandler.cmd = do_acl_remove,
1344    },
1345
1346STEXI
1347@item acl_remove @var{aclname} @var{match}
1348@findex acl_remove
1349Remove the specified match rule from the access control list.
1350ETEXI
1351
1352    {
1353        .name       = "acl_reset",
1354        .args_type  = "aclname:s",
1355        .params     = "aclname",
1356        .help       = "reset the access control list",
1357        .mhandler.cmd = do_acl_reset,
1358    },
1359
1360STEXI
1361@item acl_reset @var{aclname}
1362@findex acl_reset
1363Remove all matches from the access control list, and set the default
1364policy back to @code{deny}.
1365ETEXI
1366
1367    {
1368        .name       = "nbd_server_start",
1369        .args_type  = "all:-a,writable:-w,uri:s",
1370        .params     = "nbd_server_start [-a] [-w] host:port",
1371        .help       = "serve block devices on the given host and port",
1372        .mhandler.cmd = hmp_nbd_server_start,
1373    },
1374STEXI
1375@item nbd_server_start @var{host}:@var{port}
1376@findex nbd_server_start
1377Start an NBD server on the given host and/or port.  If the @option{-a}
1378option is included, all of the virtual machine's block devices that
1379have an inserted media on them are automatically exported; in this case,
1380the @option{-w} option makes the devices writable too.
1381ETEXI
1382
1383    {
1384        .name       = "nbd_server_add",
1385        .args_type  = "writable:-w,device:B",
1386        .params     = "nbd_server_add [-w] device",
1387        .help       = "export a block device via NBD",
1388        .mhandler.cmd = hmp_nbd_server_add,
1389    },
1390STEXI
1391@item nbd_server_add @var{device}
1392@findex nbd_server_add
1393Export a block device through QEMU's NBD server, which must be started
1394beforehand with @command{nbd_server_start}.  The @option{-w} option makes the
1395exported device writable too.
1396ETEXI
1397
1398    {
1399        .name       = "nbd_server_stop",
1400        .args_type  = "",
1401        .params     = "nbd_server_stop",
1402        .help       = "stop serving block devices using the NBD protocol",
1403        .mhandler.cmd = hmp_nbd_server_stop,
1404    },
1405STEXI
1406@item nbd_server_stop
1407@findex nbd_server_stop
1408Stop the QEMU embedded NBD server.
1409ETEXI
1410
1411
1412#if defined(TARGET_I386)
1413
1414    {
1415        .name       = "mce",
1416        .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1417        .params     = "[-b] cpu bank status mcgstatus addr misc",
1418        .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1419        .mhandler.cmd = do_inject_mce,
1420    },
1421
1422#endif
1423STEXI
1424@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1425@findex mce (x86)
1426Inject an MCE on the given CPU (x86 only).
1427ETEXI
1428
1429    {
1430        .name       = "getfd",
1431        .args_type  = "fdname:s",
1432        .params     = "getfd name",
1433        .help       = "receive a file descriptor via SCM rights and assign it a name",
1434        .mhandler.cmd = hmp_getfd,
1435    },
1436
1437STEXI
1438@item getfd @var{fdname}
1439@findex getfd
1440If a file descriptor is passed alongside this command using the SCM_RIGHTS
1441mechanism on unix sockets, it is stored using the name @var{fdname} for
1442later use by other monitor commands.
1443ETEXI
1444
1445    {
1446        .name       = "closefd",
1447        .args_type  = "fdname:s",
1448        .params     = "closefd name",
1449        .help       = "close a file descriptor previously passed via SCM rights",
1450        .mhandler.cmd = hmp_closefd,
1451    },
1452
1453STEXI
1454@item closefd @var{fdname}
1455@findex closefd
1456Close the file descriptor previously assigned to @var{fdname} using the
1457@code{getfd} command. This is only needed if the file descriptor was never
1458used by another monitor command.
1459ETEXI
1460
1461    {
1462        .name       = "block_passwd",
1463        .args_type  = "device:B,password:s",
1464        .params     = "block_passwd device password",
1465        .help       = "set the password of encrypted block devices",
1466        .mhandler.cmd = hmp_block_passwd,
1467    },
1468
1469STEXI
1470@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1471@findex block_set_io_throttle
1472Change 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}
1473ETEXI
1474
1475    {
1476        .name       = "block_set_io_throttle",
1477        .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1478        .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1479        .help       = "change I/O throttle limits for a block drive",
1480        .mhandler.cmd = hmp_block_set_io_throttle,
1481    },
1482
1483STEXI
1484@item block_passwd @var{device} @var{password}
1485@findex block_passwd
1486Set the encrypted device @var{device} password to @var{password}
1487ETEXI
1488
1489    {
1490        .name       = "set_password",
1491        .args_type  = "protocol:s,password:s,connected:s?",
1492        .params     = "protocol password action-if-connected",
1493        .help       = "set spice/vnc password",
1494        .mhandler.cmd = hmp_set_password,
1495    },
1496
1497STEXI
1498@item set_password [ vnc | spice ] password [ action-if-connected ]
1499@findex set_password
1500
1501Change spice/vnc password.  Use zero to make the password stay valid
1502forever.  @var{action-if-connected} specifies what should happen in
1503case a connection is established: @var{fail} makes the password change
1504fail.  @var{disconnect} changes the password and disconnects the
1505client.  @var{keep} changes the password and keeps the connection up.
1506@var{keep} is the default.
1507ETEXI
1508
1509    {
1510        .name       = "expire_password",
1511        .args_type  = "protocol:s,time:s",
1512        .params     = "protocol time",
1513        .help       = "set spice/vnc password expire-time",
1514        .mhandler.cmd = hmp_expire_password,
1515    },
1516
1517STEXI
1518@item expire_password [ vnc | spice ] expire-time
1519@findex expire_password
1520
1521Specify when a password for spice/vnc becomes
1522invalid. @var{expire-time} accepts:
1523
1524@table @var
1525@item now
1526Invalidate password instantly.
1527
1528@item never
1529Password stays valid forever.
1530
1531@item +nsec
1532Password stays valid for @var{nsec} seconds starting now.
1533
1534@item nsec
1535Password is invalidated at the given time.  @var{nsec} are the seconds
1536passed since 1970, i.e. unix epoch.
1537
1538@end table
1539ETEXI
1540
1541    {
1542        .name       = "chardev-add",
1543        .args_type  = "args:s",
1544        .params     = "args",
1545        .help       = "add chardev",
1546        .mhandler.cmd = hmp_chardev_add,
1547    },
1548
1549STEXI
1550@item chardev_add args
1551@findex chardev_add
1552
1553chardev_add accepts the same parameters as the -chardev command line switch.
1554
1555ETEXI
1556
1557    {
1558        .name       = "chardev-remove",
1559        .args_type  = "id:s",
1560        .params     = "id",
1561        .help       = "remove chardev",
1562        .mhandler.cmd = hmp_chardev_remove,
1563    },
1564
1565STEXI
1566@item chardev_remove id
1567@findex chardev_remove
1568
1569Removes the chardev @var{id}.
1570
1571ETEXI
1572
1573    {
1574        .name       = "qemu-io",
1575        .args_type  = "device:B,command:s",
1576        .params     = "[device] \"[command]\"",
1577        .help       = "run a qemu-io command on a block device",
1578        .mhandler.cmd = hmp_qemu_io,
1579    },
1580
1581STEXI
1582@item qemu-io @var{device} @var{command}
1583@findex qemu-io
1584
1585Executes a qemu-io command on the given block device.
1586
1587ETEXI
1588
1589    {
1590        .name       = "info",
1591        .args_type  = "item:s?",
1592        .params     = "[subcommand]",
1593        .help       = "show various information about the system state",
1594        .mhandler.cmd = do_info_help,
1595        .sub_table = info_cmds,
1596    },
1597
1598STEXI
1599@item info @var{subcommand}
1600@findex info
1601Show various information about the system state.
1602
1603@table @option
1604@item info version
1605show the version of QEMU
1606@item info network
1607show the various VLANs and the associated devices
1608@item info chardev
1609show the character devices
1610@item info block
1611show the block devices
1612@item info blockstats
1613show block device statistics
1614@item info registers
1615show the cpu registers
1616@item info cpus
1617show infos for each CPU
1618@item info history
1619show the command line history
1620@item info irq
1621show the interrupts statistics (if available)
1622@item info pic
1623show i8259 (PIC) state
1624@item info pci
1625show emulated PCI device info
1626@item info tlb
1627show virtual to physical memory mappings (i386, SH4, SPARC, PPC, and Xtensa only)
1628@item info mem
1629show the active virtual memory mappings (i386 only)
1630@item info jit
1631show dynamic compiler info
1632@item info numa
1633show NUMA information
1634@item info kvm
1635show KVM information
1636@item info usb
1637show USB devices plugged on the virtual USB hub
1638@item info usbhost
1639show all USB host devices
1640@item info profile
1641show profiling information
1642@item info capture
1643show information about active capturing
1644@item info snapshots
1645show list of VM snapshots
1646@item info status
1647show the current VM status (running|paused)
1648@item info pcmcia
1649show guest PCMCIA status
1650@item info mice
1651show which guest mouse is receiving events
1652@item info vnc
1653show the vnc server status
1654@item info name
1655show the current VM name
1656@item info uuid
1657show the current VM UUID
1658@item info cpustats
1659show CPU statistics
1660@item info usernet
1661show user network stack connection states
1662@item info migrate
1663show migration status
1664@item info migrate_capabilities
1665show current migration capabilities
1666@item info migrate_cache_size
1667show current migration XBZRLE cache size
1668@item info balloon
1669show balloon information
1670@item info qtree
1671show device tree
1672@item info qdm
1673show qdev device model list
1674@item info roms
1675show roms
1676@item info tpm
1677show the TPM device
1678@end table
1679ETEXI
1680
1681STEXI
1682@item info trace-events
1683show available trace events and their state
1684ETEXI
1685
1686STEXI
1687@end table
1688ETEXI
1689