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|id]", 354 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created", 355 .cmd = hmp_savevm, 356 }, 357 358STEXI 359@item savevm [@var{tag}|@var{id}] 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 or ID, it is replaced. More info at 364@ref{vm_snapshots}. 365ETEXI 366 367 { 368 .name = "loadvm", 369 .args_type = "name:s", 370 .params = "tag|id", 371 .help = "restore a VM snapshot from its tag or id", 372 .cmd = hmp_loadvm, 373 .command_completion = loadvm_completion, 374 }, 375 376STEXI 377@item loadvm @var{tag}|@var{id} 378@findex loadvm 379Set the whole virtual machine to the snapshot identified by the tag 380@var{tag} or the unique snapshot ID @var{id}. 381ETEXI 382 383 { 384 .name = "delvm", 385 .args_type = "name:s", 386 .params = "tag|id", 387 .help = "delete a VM snapshot from its tag or id", 388 .cmd = hmp_delvm, 389 .command_completion = delvm_completion, 390 }, 391 392STEXI 393@item delvm @var{tag}|@var{id} 394@findex delvm 395Delete the snapshot identified by @var{tag} or @var{id}. 396ETEXI 397 398 { 399 .name = "singlestep", 400 .args_type = "option:s?", 401 .params = "[on|off]", 402 .help = "run emulation in singlestep mode or switch to normal mode", 403 .cmd = hmp_singlestep, 404 }, 405 406STEXI 407@item singlestep [off] 408@findex singlestep 409Run the emulation in single step mode. 410If called with option off, the emulation returns to normal mode. 411ETEXI 412 413 { 414 .name = "stop", 415 .args_type = "", 416 .params = "", 417 .help = "stop emulation", 418 .cmd = hmp_stop, 419 }, 420 421STEXI 422@item stop 423@findex stop 424Stop emulation. 425ETEXI 426 427 { 428 .name = "c|cont", 429 .args_type = "", 430 .params = "", 431 .help = "resume emulation", 432 .cmd = hmp_cont, 433 }, 434 435STEXI 436@item c or cont 437@findex cont 438Resume emulation. 439ETEXI 440 441 { 442 .name = "system_wakeup", 443 .args_type = "", 444 .params = "", 445 .help = "wakeup guest from suspend", 446 .cmd = hmp_system_wakeup, 447 }, 448 449STEXI 450@item system_wakeup 451@findex system_wakeup 452Wakeup guest from suspend. 453ETEXI 454 455 { 456 .name = "gdbserver", 457 .args_type = "device:s?", 458 .params = "[device]", 459 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 460 .cmd = hmp_gdbserver, 461 }, 462 463STEXI 464@item gdbserver [@var{port}] 465@findex gdbserver 466Start gdbserver session (default @var{port}=1234) 467ETEXI 468 469 { 470 .name = "x", 471 .args_type = "fmt:/,addr:l", 472 .params = "/fmt addr", 473 .help = "virtual memory dump starting at 'addr'", 474 .cmd = hmp_memory_dump, 475 }, 476 477STEXI 478@item x/fmt @var{addr} 479@findex x 480Virtual memory dump starting at @var{addr}. 481ETEXI 482 483 { 484 .name = "xp", 485 .args_type = "fmt:/,addr:l", 486 .params = "/fmt addr", 487 .help = "physical memory dump starting at 'addr'", 488 .cmd = hmp_physical_memory_dump, 489 }, 490 491STEXI 492@item xp /@var{fmt} @var{addr} 493@findex xp 494Physical memory dump starting at @var{addr}. 495 496@var{fmt} is a format which tells the command how to format the 497data. Its syntax is: @option{/@{count@}@{format@}@{size@}} 498 499@table @var 500@item count 501is the number of items to be dumped. 502 503@item format 504can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 505c (char) or i (asm instruction). 506 507@item size 508can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 509@code{h} or @code{w} can be specified with the @code{i} format to 510respectively select 16 or 32 bit code instruction size. 511 512@end table 513 514Examples: 515@itemize 516@item 517Dump 10 instructions at the current instruction pointer: 518@example 519(qemu) x/10i $eip 5200x90107063: ret 5210x90107064: sti 5220x90107065: lea 0x0(%esi,1),%esi 5230x90107069: lea 0x0(%edi,1),%edi 5240x90107070: ret 5250x90107071: jmp 0x90107080 5260x90107073: nop 5270x90107074: nop 5280x90107075: nop 5290x90107076: nop 530@end example 531 532@item 533Dump 80 16 bit values at the start of the video memory. 534@smallexample 535(qemu) xp/80hx 0xb8000 5360x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 5370x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 5380x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 5390x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 5400x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 5410x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 5420x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5430x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5440x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5450x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 546@end smallexample 547@end itemize 548ETEXI 549 550 { 551 .name = "gpa2hva", 552 .args_type = "addr:l", 553 .params = "addr", 554 .help = "print the host virtual address corresponding to a guest physical address", 555 .cmd = hmp_gpa2hva, 556 }, 557 558STEXI 559@item gpa2hva @var{addr} 560@findex gpa2hva 561Print the host virtual address at which the guest's physical address @var{addr} 562is mapped. 563ETEXI 564 565#ifdef CONFIG_LINUX 566 { 567 .name = "gpa2hpa", 568 .args_type = "addr:l", 569 .params = "addr", 570 .help = "print the host physical address corresponding to a guest physical address", 571 .cmd = hmp_gpa2hpa, 572 }, 573#endif 574 575STEXI 576@item gpa2hpa @var{addr} 577@findex gpa2hpa 578Print the host physical address at which the guest's physical address @var{addr} 579is mapped. 580ETEXI 581 582 { 583 .name = "p|print", 584 .args_type = "fmt:/,val:l", 585 .params = "/fmt expr", 586 .help = "print expression value (use $reg for CPU register access)", 587 .cmd = do_print, 588 }, 589 590STEXI 591@item p or print/@var{fmt} @var{expr} 592@findex print 593Print expression value. Only the @var{format} part of @var{fmt} is 594used. 595ETEXI 596 597 { 598 .name = "i", 599 .args_type = "fmt:/,addr:i,index:i.", 600 .params = "/fmt addr", 601 .help = "I/O port read", 602 .cmd = hmp_ioport_read, 603 }, 604 605STEXI 606@item i/@var{fmt} @var{addr} [.@var{index}] 607@findex i 608Read I/O port. 609ETEXI 610 611 { 612 .name = "o", 613 .args_type = "fmt:/,addr:i,val:i", 614 .params = "/fmt addr value", 615 .help = "I/O port write", 616 .cmd = hmp_ioport_write, 617 }, 618 619STEXI 620@item o/@var{fmt} @var{addr} @var{val} 621@findex o 622Write to I/O port. 623ETEXI 624 625 { 626 .name = "sendkey", 627 .args_type = "keys:s,hold-time:i?", 628 .params = "keys [hold_ms]", 629 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 630 .cmd = hmp_sendkey, 631 .command_completion = sendkey_completion, 632 }, 633 634STEXI 635@item sendkey @var{keys} 636@findex sendkey 637Send @var{keys} to the guest. @var{keys} could be the name of the 638key or the raw value in hexadecimal format. Use @code{-} to press 639several keys simultaneously. Example: 640@example 641sendkey ctrl-alt-f1 642@end example 643 644This command is useful to send keys that your graphical user interface 645intercepts at low level, such as @code{ctrl-alt-f1} in X Window. 646ETEXI 647 { 648 .name = "sync-profile", 649 .args_type = "op:s?", 650 .params = "[on|off|reset]", 651 .help = "enable, disable or reset synchronization profiling. " 652 "With no arguments, prints whether profiling is on or off.", 653 .cmd = hmp_sync_profile, 654 }, 655 656STEXI 657@item sync-profile [on|off|reset] 658@findex sync-profile 659Enable, disable or reset synchronization profiling. With no arguments, prints 660whether profiling is on or off. 661ETEXI 662 663 { 664 .name = "system_reset", 665 .args_type = "", 666 .params = "", 667 .help = "reset the system", 668 .cmd = hmp_system_reset, 669 }, 670 671STEXI 672@item system_reset 673@findex system_reset 674Reset the system. 675ETEXI 676 677 { 678 .name = "system_powerdown", 679 .args_type = "", 680 .params = "", 681 .help = "send system power down event", 682 .cmd = hmp_system_powerdown, 683 }, 684 685STEXI 686@item system_powerdown 687@findex system_powerdown 688Power down the system (if supported). 689ETEXI 690 691 { 692 .name = "sum", 693 .args_type = "start:i,size:i", 694 .params = "addr size", 695 .help = "compute the checksum of a memory region", 696 .cmd = hmp_sum, 697 }, 698 699STEXI 700@item sum @var{addr} @var{size} 701@findex sum 702Compute the checksum of a memory region. 703ETEXI 704 705 { 706 .name = "device_add", 707 .args_type = "device:O", 708 .params = "driver[,prop=value][,...]", 709 .help = "add device, like -device on the command line", 710 .cmd = hmp_device_add, 711 .command_completion = device_add_completion, 712 }, 713 714STEXI 715@item device_add @var{config} 716@findex device_add 717Add device. 718ETEXI 719 720 { 721 .name = "device_del", 722 .args_type = "id:s", 723 .params = "device", 724 .help = "remove device", 725 .cmd = hmp_device_del, 726 .command_completion = device_del_completion, 727 }, 728 729STEXI 730@item device_del @var{id} 731@findex device_del 732Remove device @var{id}. @var{id} may be a short ID 733or a QOM object path. 734ETEXI 735 736 { 737 .name = "cpu", 738 .args_type = "index:i", 739 .params = "index", 740 .help = "set the default CPU", 741 .cmd = hmp_cpu, 742 }, 743 744STEXI 745@item cpu @var{index} 746@findex cpu 747Set the default CPU. 748ETEXI 749 750 { 751 .name = "mouse_move", 752 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 753 .params = "dx dy [dz]", 754 .help = "send mouse move events", 755 .cmd = hmp_mouse_move, 756 }, 757 758STEXI 759@item mouse_move @var{dx} @var{dy} [@var{dz}] 760@findex mouse_move 761Move the active mouse to the specified coordinates @var{dx} @var{dy} 762with optional scroll axis @var{dz}. 763ETEXI 764 765 { 766 .name = "mouse_button", 767 .args_type = "button_state:i", 768 .params = "state", 769 .help = "change mouse button state (1=L, 2=M, 4=R)", 770 .cmd = hmp_mouse_button, 771 }, 772 773STEXI 774@item mouse_button @var{val} 775@findex mouse_button 776Change the active mouse button state @var{val} (1=L, 2=M, 4=R). 777ETEXI 778 779 { 780 .name = "mouse_set", 781 .args_type = "index:i", 782 .params = "index", 783 .help = "set which mouse device receives events", 784 .cmd = hmp_mouse_set, 785 }, 786 787STEXI 788@item mouse_set @var{index} 789@findex mouse_set 790Set which mouse device receives events at given @var{index}, index 791can be obtained with 792@example 793info mice 794@end example 795ETEXI 796 797 { 798 .name = "wavcapture", 799 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?", 800 .params = "path [frequency [bits [channels]]]", 801 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 802 .cmd = hmp_wavcapture, 803 }, 804STEXI 805@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]] 806@findex wavcapture 807Capture audio into @var{filename}. Using sample rate @var{frequency} 808bits per sample @var{bits} and number of channels @var{channels}. 809 810Defaults: 811@itemize @minus 812@item Sample rate = 44100 Hz - CD quality 813@item Bits = 16 814@item Number of channels = 2 - Stereo 815@end itemize 816ETEXI 817 818 { 819 .name = "stopcapture", 820 .args_type = "n:i", 821 .params = "capture index", 822 .help = "stop capture", 823 .cmd = hmp_stopcapture, 824 }, 825STEXI 826@item stopcapture @var{index} 827@findex stopcapture 828Stop capture with a given @var{index}, index can be obtained with 829@example 830info capture 831@end example 832ETEXI 833 834 { 835 .name = "memsave", 836 .args_type = "val:l,size:i,filename:s", 837 .params = "addr size file", 838 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'", 839 .cmd = hmp_memsave, 840 }, 841 842STEXI 843@item memsave @var{addr} @var{size} @var{file} 844@findex memsave 845save to disk virtual memory dump starting at @var{addr} of size @var{size}. 846ETEXI 847 848 { 849 .name = "pmemsave", 850 .args_type = "val:l,size:i,filename:s", 851 .params = "addr size file", 852 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 853 .cmd = hmp_pmemsave, 854 }, 855 856STEXI 857@item pmemsave @var{addr} @var{size} @var{file} 858@findex pmemsave 859save to disk physical memory dump starting at @var{addr} of size @var{size}. 860ETEXI 861 862 { 863 .name = "boot_set", 864 .args_type = "bootdevice:s", 865 .params = "bootdevice", 866 .help = "define new values for the boot device list", 867 .cmd = hmp_boot_set, 868 }, 869 870STEXI 871@item boot_set @var{bootdevicelist} 872@findex boot_set 873Define new values for the boot device list. Those values will override 874the values specified on the command line through the @code{-boot} option. 875 876The values that can be specified here depend on the machine type, but are 877the same that can be specified in the @code{-boot} command line option. 878ETEXI 879 880 { 881 .name = "nmi", 882 .args_type = "", 883 .params = "", 884 .help = "inject an NMI", 885 .cmd = hmp_nmi, 886 }, 887STEXI 888@item nmi @var{cpu} 889@findex nmi 890Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64). 891 892ETEXI 893 894 { 895 .name = "ringbuf_write", 896 .args_type = "device:s,data:s", 897 .params = "device data", 898 .help = "Write to a ring buffer character device", 899 .cmd = hmp_ringbuf_write, 900 .command_completion = ringbuf_write_completion, 901 }, 902 903STEXI 904@item ringbuf_write @var{device} @var{data} 905@findex ringbuf_write 906Write @var{data} to ring buffer character device @var{device}. 907@var{data} must be a UTF-8 string. 908 909ETEXI 910 911 { 912 .name = "ringbuf_read", 913 .args_type = "device:s,size:i", 914 .params = "device size", 915 .help = "Read from a ring buffer character device", 916 .cmd = hmp_ringbuf_read, 917 .command_completion = ringbuf_write_completion, 918 }, 919 920STEXI 921@item ringbuf_read @var{device} 922@findex ringbuf_read 923Read and print up to @var{size} bytes from ring buffer character 924device @var{device}. 925Certain non-printable characters are printed \uXXXX, where XXXX is the 926character code in hexadecimal. Character \ is printed \\. 927Bug: can screw up when the buffer contains invalid UTF-8 sequences, 928NUL characters, after the ring buffer lost data, and when reading 929stops because the size limit is reached. 930 931ETEXI 932 933 { 934 .name = "migrate", 935 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s", 936 .params = "[-d] [-b] [-i] [-r] uri", 937 .help = "migrate to URI (using -d to not wait for completion)" 938 "\n\t\t\t -b for migration without shared storage with" 939 " full copy of disk\n\t\t\t -i for migration without " 940 "shared storage with incremental copy of disk " 941 "(base image shared between src and destination)" 942 "\n\t\t\t -r to resume a paused migration", 943 .cmd = hmp_migrate, 944 }, 945 946 947STEXI 948@item migrate [-d] [-b] [-i] @var{uri} 949@findex migrate 950Migrate to @var{uri} (using -d to not wait for completion). 951 -b for migration with full copy of disk 952 -i for migration with incremental copy of disk (base image is shared) 953ETEXI 954 955 { 956 .name = "migrate_cancel", 957 .args_type = "", 958 .params = "", 959 .help = "cancel the current VM migration", 960 .cmd = hmp_migrate_cancel, 961 }, 962 963STEXI 964@item migrate_cancel 965@findex migrate_cancel 966Cancel the current VM migration. 967ETEXI 968 969 { 970 .name = "migrate_continue", 971 .args_type = "state:s", 972 .params = "state", 973 .help = "Continue migration from the given paused state", 974 .cmd = hmp_migrate_continue, 975 }, 976STEXI 977@item migrate_continue @var{state} 978@findex migrate_continue 979Continue migration from the paused state @var{state} 980ETEXI 981 982 { 983 .name = "migrate_incoming", 984 .args_type = "uri:s", 985 .params = "uri", 986 .help = "Continue an incoming migration from an -incoming defer", 987 .cmd = hmp_migrate_incoming, 988 }, 989 990STEXI 991@item migrate_incoming @var{uri} 992@findex migrate_incoming 993Continue an incoming migration using the @var{uri} (that has the same syntax 994as the -incoming option). 995ETEXI 996 997 { 998 .name = "migrate_recover", 999 .args_type = "uri:s", 1000 .params = "uri", 1001 .help = "Continue a paused incoming postcopy migration", 1002 .cmd = hmp_migrate_recover, 1003 }, 1004 1005STEXI 1006@item migrate_recover @var{uri} 1007@findex migrate_recover 1008Continue a paused incoming postcopy migration using the @var{uri}. 1009ETEXI 1010 1011 { 1012 .name = "migrate_pause", 1013 .args_type = "", 1014 .params = "", 1015 .help = "Pause an ongoing migration (postcopy-only)", 1016 .cmd = hmp_migrate_pause, 1017 }, 1018 1019STEXI 1020@item migrate_pause 1021@findex migrate_pause 1022Pause an ongoing migration. Currently it only supports postcopy. 1023ETEXI 1024 1025 { 1026 .name = "migrate_set_cache_size", 1027 .args_type = "value:o", 1028 .params = "value", 1029 .help = "set cache size (in bytes) for XBZRLE migrations," 1030 "the cache size will be rounded down to the nearest " 1031 "power of 2.\n" 1032 "The cache size affects the number of cache misses." 1033 "In case of a high cache miss ratio you need to increase" 1034 " the cache size", 1035 .cmd = hmp_migrate_set_cache_size, 1036 }, 1037 1038STEXI 1039@item migrate_set_cache_size @var{value} 1040@findex migrate_set_cache_size 1041Set cache size to @var{value} (in bytes) for xbzrle migrations. 1042ETEXI 1043 1044 { 1045 .name = "migrate_set_speed", 1046 .args_type = "value:o", 1047 .params = "value", 1048 .help = "set maximum speed (in bytes) for migrations. " 1049 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T", 1050 .cmd = hmp_migrate_set_speed, 1051 }, 1052 1053STEXI 1054@item migrate_set_speed @var{value} 1055@findex migrate_set_speed 1056Set maximum speed to @var{value} (in bytes) for migrations. 1057ETEXI 1058 1059 { 1060 .name = "migrate_set_downtime", 1061 .args_type = "value:T", 1062 .params = "value", 1063 .help = "set maximum tolerated downtime (in seconds) for migrations", 1064 .cmd = hmp_migrate_set_downtime, 1065 }, 1066 1067STEXI 1068@item migrate_set_downtime @var{second} 1069@findex migrate_set_downtime 1070Set maximum tolerated downtime (in seconds) for migration. 1071ETEXI 1072 1073 { 1074 .name = "migrate_set_capability", 1075 .args_type = "capability:s,state:b", 1076 .params = "capability state", 1077 .help = "Enable/Disable the usage of a capability for migration", 1078 .cmd = hmp_migrate_set_capability, 1079 .command_completion = migrate_set_capability_completion, 1080 }, 1081 1082STEXI 1083@item migrate_set_capability @var{capability} @var{state} 1084@findex migrate_set_capability 1085Enable/Disable the usage of a capability @var{capability} for migration. 1086ETEXI 1087 1088 { 1089 .name = "migrate_set_parameter", 1090 .args_type = "parameter:s,value:s", 1091 .params = "parameter value", 1092 .help = "Set the parameter for migration", 1093 .cmd = hmp_migrate_set_parameter, 1094 .command_completion = migrate_set_parameter_completion, 1095 }, 1096 1097STEXI 1098@item migrate_set_parameter @var{parameter} @var{value} 1099@findex migrate_set_parameter 1100Set the parameter @var{parameter} for migration. 1101ETEXI 1102 1103 { 1104 .name = "migrate_start_postcopy", 1105 .args_type = "", 1106 .params = "", 1107 .help = "Followup to a migration command to switch the migration" 1108 " to postcopy mode. The postcopy-ram capability must " 1109 "be set on both source and destination before the " 1110 "original migration command .", 1111 .cmd = hmp_migrate_start_postcopy, 1112 }, 1113 1114STEXI 1115@item migrate_start_postcopy 1116@findex migrate_start_postcopy 1117Switch in-progress migration to postcopy mode. Ignored after the end of 1118migration (or once already in postcopy). 1119ETEXI 1120 1121 { 1122 .name = "x_colo_lost_heartbeat", 1123 .args_type = "", 1124 .params = "", 1125 .help = "Tell COLO that heartbeat is lost,\n\t\t\t" 1126 "a failover or takeover is needed.", 1127 .cmd = hmp_x_colo_lost_heartbeat, 1128 }, 1129 1130STEXI 1131@item x_colo_lost_heartbeat 1132@findex x_colo_lost_heartbeat 1133Tell COLO that heartbeat is lost, a failover or takeover is needed. 1134ETEXI 1135 1136 { 1137 .name = "client_migrate_info", 1138 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 1139 .params = "protocol hostname port tls-port cert-subject", 1140 .help = "set migration information for remote display", 1141 .cmd = hmp_client_migrate_info, 1142 }, 1143 1144STEXI 1145@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject} 1146@findex client_migrate_info 1147Set migration information for remote display. This makes the server 1148ask the client to automatically reconnect using the new parameters 1149once migration finished successfully. Only implemented for SPICE. 1150ETEXI 1151 1152 { 1153 .name = "dump-guest-memory", 1154 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", 1155 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]", 1156 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1157 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1158 "-d: return immediately (do not wait for completion).\n\t\t\t" 1159 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1160 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1161 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1162 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t" 1163 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t" 1164 "begin: the starting physical address.\n\t\t\t" 1165 "length: the memory size, in bytes.", 1166 .cmd = hmp_dump_guest_memory, 1167 }, 1168 1169STEXI 1170@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length} 1171@item dump-guest-memory [-z|-l|-s|-w] @var{filename} 1172@findex dump-guest-memory 1173Dump guest memory to @var{protocol}. The file can be processed with crash or 1174gdb. Without -z|-l|-s|-w, the dump format is ELF. 1175 -p: do paging to get guest's memory mapping. 1176 -z: dump in kdump-compressed format, with zlib compression. 1177 -l: dump in kdump-compressed format, with lzo compression. 1178 -s: dump in kdump-compressed format, with snappy compression. 1179 -w: dump in Windows crashdump format (can be used instead of ELF-dump converting), 1180 for Windows x64 guests with vmcoreinfo driver only 1181 filename: dump file name. 1182 begin: the starting physical address. It's optional, and should be 1183 specified together with length. 1184 length: the memory size, in bytes. It's optional, and should be specified 1185 together with begin. 1186ETEXI 1187 1188#if defined(TARGET_S390X) 1189 { 1190 .name = "dump-skeys", 1191 .args_type = "filename:F", 1192 .params = "", 1193 .help = "Save guest storage keys into file 'filename'.\n", 1194 .cmd = hmp_dump_skeys, 1195 }, 1196#endif 1197 1198STEXI 1199@item dump-skeys @var{filename} 1200@findex dump-skeys 1201Save guest storage keys to a file. 1202ETEXI 1203 1204#if defined(TARGET_S390X) 1205 { 1206 .name = "migration_mode", 1207 .args_type = "mode:i", 1208 .params = "mode", 1209 .help = "Enables or disables migration mode\n", 1210 .cmd = hmp_migrationmode, 1211 }, 1212#endif 1213 1214STEXI 1215@item migration_mode @var{mode} 1216@findex migration_mode 1217Enables or disables migration mode. 1218ETEXI 1219 1220 { 1221 .name = "snapshot_blkdev", 1222 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1223 .params = "[-n] device [new-image-file] [format]", 1224 .help = "initiates a live snapshot\n\t\t\t" 1225 "of device. If a new image file is specified, the\n\t\t\t" 1226 "new image file will become the new root image.\n\t\t\t" 1227 "If format is specified, the snapshot file will\n\t\t\t" 1228 "be created in that format.\n\t\t\t" 1229 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1230 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1231 "recreating it from scratch.", 1232 .cmd = hmp_snapshot_blkdev, 1233 }, 1234 1235STEXI 1236@item snapshot_blkdev 1237@findex snapshot_blkdev 1238Snapshot device, using snapshot file as target if provided 1239ETEXI 1240 1241 { 1242 .name = "snapshot_blkdev_internal", 1243 .args_type = "device:B,name:s", 1244 .params = "device name", 1245 .help = "take an internal snapshot of device.\n\t\t\t" 1246 "The format of the image used by device must\n\t\t\t" 1247 "support it, such as qcow2.\n\t\t\t", 1248 .cmd = hmp_snapshot_blkdev_internal, 1249 }, 1250 1251STEXI 1252@item snapshot_blkdev_internal 1253@findex snapshot_blkdev_internal 1254Take an internal snapshot on device if it support 1255ETEXI 1256 1257 { 1258 .name = "snapshot_delete_blkdev_internal", 1259 .args_type = "device:B,name:s,id:s?", 1260 .params = "device name [id]", 1261 .help = "delete an internal snapshot of device.\n\t\t\t" 1262 "If id is specified, qemu will try delete\n\t\t\t" 1263 "the snapshot matching both id and name.\n\t\t\t" 1264 "The format of the image used by device must\n\t\t\t" 1265 "support it, such as qcow2.\n\t\t\t", 1266 .cmd = hmp_snapshot_delete_blkdev_internal, 1267 }, 1268 1269STEXI 1270@item snapshot_delete_blkdev_internal 1271@findex snapshot_delete_blkdev_internal 1272Delete an internal snapshot on device if it support 1273ETEXI 1274 1275 { 1276 .name = "drive_mirror", 1277 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1278 .params = "[-n] [-f] device target [format]", 1279 .help = "initiates live storage\n\t\t\t" 1280 "migration for a device. The device's contents are\n\t\t\t" 1281 "copied to the new image file, including data that\n\t\t\t" 1282 "is written after the command is started.\n\t\t\t" 1283 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1284 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1285 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1286 "so that the result does not need a backing file.\n\t\t\t", 1287 .cmd = hmp_drive_mirror, 1288 }, 1289STEXI 1290@item drive_mirror 1291@findex drive_mirror 1292Start mirroring a block device's writes to a new destination, 1293using the specified target. 1294ETEXI 1295 1296 { 1297 .name = "drive_backup", 1298 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?", 1299 .params = "[-n] [-f] [-c] device target [format]", 1300 .help = "initiates a point-in-time\n\t\t\t" 1301 "copy for a device. The device's contents are\n\t\t\t" 1302 "copied to the new image file, excluding data that\n\t\t\t" 1303 "is written after the command is started.\n\t\t\t" 1304 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1305 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1306 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1307 "so that the result does not need a backing file.\n\t\t\t" 1308 "The -c flag requests QEMU to compress backup data\n\t\t\t" 1309 "(if the target format supports it).\n\t\t\t", 1310 .cmd = hmp_drive_backup, 1311 }, 1312STEXI 1313@item drive_backup 1314@findex drive_backup 1315Start a point-in-time copy of a block device to a specificed target. 1316ETEXI 1317 1318 { 1319 .name = "drive_add", 1320 .args_type = "node:-n,pci_addr:s,opts:s", 1321 .params = "[-n] [[<domain>:]<bus>:]<slot>\n" 1322 "[file=file][,if=type][,bus=n]\n" 1323 "[,unit=m][,media=d][,index=i]\n" 1324 "[,snapshot=on|off][,cache=on|off]\n" 1325 "[,readonly=on|off][,copy-on-read=on|off]", 1326 .help = "add drive to PCI storage controller", 1327 .cmd = hmp_drive_add, 1328 }, 1329 1330STEXI 1331@item drive_add 1332@findex drive_add 1333Add drive to PCI storage controller. 1334ETEXI 1335 1336 { 1337 .name = "pcie_aer_inject_error", 1338 .args_type = "advisory_non_fatal:-a,correctable:-c," 1339 "id:s,error_status:s," 1340 "header0:i?,header1:i?,header2:i?,header3:i?," 1341 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1342 .params = "[-a] [-c] id " 1343 "<error_status> [<tlp header> [<tlp header prefix>]]", 1344 .help = "inject pcie aer error\n\t\t\t" 1345 " -a for advisory non fatal error\n\t\t\t" 1346 " -c for correctable error\n\t\t\t" 1347 "<id> = qdev device id\n\t\t\t" 1348 "<error_status> = error string or 32bit\n\t\t\t" 1349 "<tlb header> = 32bit x 4\n\t\t\t" 1350 "<tlb header prefix> = 32bit x 4", 1351 .cmd = hmp_pcie_aer_inject_error, 1352 }, 1353 1354STEXI 1355@item pcie_aer_inject_error 1356@findex pcie_aer_inject_error 1357Inject PCIe AER error 1358ETEXI 1359 1360 { 1361 .name = "netdev_add", 1362 .args_type = "netdev:O", 1363 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]", 1364 .help = "add host network device", 1365 .cmd = hmp_netdev_add, 1366 .command_completion = netdev_add_completion, 1367 }, 1368 1369STEXI 1370@item netdev_add 1371@findex netdev_add 1372Add host network device. 1373ETEXI 1374 1375 { 1376 .name = "netdev_del", 1377 .args_type = "id:s", 1378 .params = "id", 1379 .help = "remove host network device", 1380 .cmd = hmp_netdev_del, 1381 .command_completion = netdev_del_completion, 1382 }, 1383 1384STEXI 1385@item netdev_del 1386@findex netdev_del 1387Remove host network device. 1388ETEXI 1389 1390 { 1391 .name = "object_add", 1392 .args_type = "object:O", 1393 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1394 .help = "create QOM object", 1395 .cmd = hmp_object_add, 1396 .command_completion = object_add_completion, 1397 }, 1398 1399STEXI 1400@item object_add 1401@findex object_add 1402Create QOM object. 1403ETEXI 1404 1405 { 1406 .name = "object_del", 1407 .args_type = "id:s", 1408 .params = "id", 1409 .help = "destroy QOM object", 1410 .cmd = hmp_object_del, 1411 .command_completion = object_del_completion, 1412 }, 1413 1414STEXI 1415@item object_del 1416@findex object_del 1417Destroy QOM object. 1418ETEXI 1419 1420#ifdef CONFIG_SLIRP 1421 { 1422 .name = "hostfwd_add", 1423 .args_type = "arg1:s,arg2:s?,arg3:s?", 1424 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1425 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1426 .cmd = hmp_hostfwd_add, 1427 }, 1428#endif 1429STEXI 1430@item hostfwd_add 1431@findex hostfwd_add 1432Redirect TCP or UDP connections from host to guest (requires -net user). 1433ETEXI 1434 1435#ifdef CONFIG_SLIRP 1436 { 1437 .name = "hostfwd_remove", 1438 .args_type = "arg1:s,arg2:s?,arg3:s?", 1439 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport", 1440 .help = "remove host-to-guest TCP or UDP redirection", 1441 .cmd = hmp_hostfwd_remove, 1442 }, 1443 1444#endif 1445STEXI 1446@item hostfwd_remove 1447@findex hostfwd_remove 1448Remove host-to-guest TCP or UDP redirection. 1449ETEXI 1450 1451 { 1452 .name = "balloon", 1453 .args_type = "value:M", 1454 .params = "target", 1455 .help = "request VM to change its memory allocation (in MB)", 1456 .cmd = hmp_balloon, 1457 }, 1458 1459STEXI 1460@item balloon @var{value} 1461@findex balloon 1462Request VM to change its memory allocation to @var{value} (in MB). 1463ETEXI 1464 1465 { 1466 .name = "set_link", 1467 .args_type = "name:s,up:b", 1468 .params = "name on|off", 1469 .help = "change the link status of a network adapter", 1470 .cmd = hmp_set_link, 1471 .command_completion = set_link_completion, 1472 }, 1473 1474STEXI 1475@item set_link @var{name} [on|off] 1476@findex set_link 1477Switch link @var{name} on (i.e. up) or off (i.e. down). 1478ETEXI 1479 1480 { 1481 .name = "watchdog_action", 1482 .args_type = "action:s", 1483 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1484 .help = "change watchdog action", 1485 .cmd = hmp_watchdog_action, 1486 .command_completion = watchdog_action_completion, 1487 }, 1488 1489STEXI 1490@item watchdog_action 1491@findex watchdog_action 1492Change watchdog action. 1493ETEXI 1494 1495 { 1496 .name = "acl_show", 1497 .args_type = "aclname:s", 1498 .params = "aclname", 1499 .help = "list rules in the access control list", 1500 .cmd = hmp_acl_show, 1501 }, 1502 1503STEXI 1504@item acl_show @var{aclname} 1505@findex acl_show 1506List all the matching rules in the access control list, and the default 1507policy. There are currently two named access control lists, 1508@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client 1509certificate distinguished name, and SASL username respectively. 1510ETEXI 1511 1512 { 1513 .name = "acl_policy", 1514 .args_type = "aclname:s,policy:s", 1515 .params = "aclname allow|deny", 1516 .help = "set default access control list policy", 1517 .cmd = hmp_acl_policy, 1518 }, 1519 1520STEXI 1521@item acl_policy @var{aclname} @code{allow|deny} 1522@findex acl_policy 1523Set the default access control list policy, used in the event that 1524none of the explicit rules match. The default policy at startup is 1525always @code{deny}. 1526ETEXI 1527 1528 { 1529 .name = "acl_add", 1530 .args_type = "aclname:s,match:s,policy:s,index:i?", 1531 .params = "aclname match allow|deny [index]", 1532 .help = "add a match rule to the access control list", 1533 .cmd = hmp_acl_add, 1534 }, 1535 1536STEXI 1537@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}] 1538@findex acl_add 1539Add a match rule to the access control list, allowing or denying access. 1540The match will normally be an exact username or x509 distinguished name, 1541but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to 1542allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will 1543normally be appended to the end of the ACL, but can be inserted 1544earlier in the list if the optional @var{index} parameter is supplied. 1545ETEXI 1546 1547 { 1548 .name = "acl_remove", 1549 .args_type = "aclname:s,match:s", 1550 .params = "aclname match", 1551 .help = "remove a match rule from the access control list", 1552 .cmd = hmp_acl_remove, 1553 }, 1554 1555STEXI 1556@item acl_remove @var{aclname} @var{match} 1557@findex acl_remove 1558Remove the specified match rule from the access control list. 1559ETEXI 1560 1561 { 1562 .name = "acl_reset", 1563 .args_type = "aclname:s", 1564 .params = "aclname", 1565 .help = "reset the access control list", 1566 .cmd = hmp_acl_reset, 1567 }, 1568 1569STEXI 1570@item acl_reset @var{aclname} 1571@findex acl_reset 1572Remove all matches from the access control list, and set the default 1573policy back to @code{deny}. 1574ETEXI 1575 1576 { 1577 .name = "nbd_server_start", 1578 .args_type = "all:-a,writable:-w,uri:s", 1579 .params = "nbd_server_start [-a] [-w] host:port", 1580 .help = "serve block devices on the given host and port", 1581 .cmd = hmp_nbd_server_start, 1582 }, 1583STEXI 1584@item nbd_server_start @var{host}:@var{port} 1585@findex nbd_server_start 1586Start an NBD server on the given host and/or port. If the @option{-a} 1587option is included, all of the virtual machine's block devices that 1588have an inserted media on them are automatically exported; in this case, 1589the @option{-w} option makes the devices writable too. 1590ETEXI 1591 1592 { 1593 .name = "nbd_server_add", 1594 .args_type = "writable:-w,device:B,name:s?", 1595 .params = "nbd_server_add [-w] device [name]", 1596 .help = "export a block device via NBD", 1597 .cmd = hmp_nbd_server_add, 1598 }, 1599STEXI 1600@item nbd_server_add @var{device} [ @var{name} ] 1601@findex nbd_server_add 1602Export a block device through QEMU's NBD server, which must be started 1603beforehand with @command{nbd_server_start}. The @option{-w} option makes the 1604exported device writable too. The export name is controlled by @var{name}, 1605defaulting to @var{device}. 1606ETEXI 1607 1608 { 1609 .name = "nbd_server_remove", 1610 .args_type = "force:-f,name:s", 1611 .params = "nbd_server_remove [-f] name", 1612 .help = "remove an export previously exposed via NBD", 1613 .cmd = hmp_nbd_server_remove, 1614 }, 1615STEXI 1616@item nbd_server_remove [-f] @var{name} 1617@findex nbd_server_remove 1618Stop exporting a block device through QEMU's NBD server, which was 1619previously started with @command{nbd_server_add}. The @option{-f} 1620option forces the server to drop the export immediately even if 1621clients are connected; otherwise the command fails unless there are no 1622clients. 1623ETEXI 1624 1625 { 1626 .name = "nbd_server_stop", 1627 .args_type = "", 1628 .params = "nbd_server_stop", 1629 .help = "stop serving block devices using the NBD protocol", 1630 .cmd = hmp_nbd_server_stop, 1631 }, 1632STEXI 1633@item nbd_server_stop 1634@findex nbd_server_stop 1635Stop the QEMU embedded NBD server. 1636ETEXI 1637 1638 1639#if defined(TARGET_I386) 1640 1641 { 1642 .name = "mce", 1643 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1644 .params = "[-b] cpu bank status mcgstatus addr misc", 1645 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1646 .cmd = hmp_mce, 1647 }, 1648 1649#endif 1650STEXI 1651@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc} 1652@findex mce (x86) 1653Inject an MCE on the given CPU (x86 only). 1654ETEXI 1655 1656 { 1657 .name = "getfd", 1658 .args_type = "fdname:s", 1659 .params = "getfd name", 1660 .help = "receive a file descriptor via SCM rights and assign it a name", 1661 .cmd = hmp_getfd, 1662 }, 1663 1664STEXI 1665@item getfd @var{fdname} 1666@findex getfd 1667If a file descriptor is passed alongside this command using the SCM_RIGHTS 1668mechanism on unix sockets, it is stored using the name @var{fdname} for 1669later use by other monitor commands. 1670ETEXI 1671 1672 { 1673 .name = "closefd", 1674 .args_type = "fdname:s", 1675 .params = "closefd name", 1676 .help = "close a file descriptor previously passed via SCM rights", 1677 .cmd = hmp_closefd, 1678 }, 1679 1680STEXI 1681@item closefd @var{fdname} 1682@findex closefd 1683Close the file descriptor previously assigned to @var{fdname} using the 1684@code{getfd} command. This is only needed if the file descriptor was never 1685used by another monitor command. 1686ETEXI 1687 1688 { 1689 .name = "block_passwd", 1690 .args_type = "device:B,password:s", 1691 .params = "block_passwd device password", 1692 .help = "set the password of encrypted block devices", 1693 .cmd = hmp_block_passwd, 1694 }, 1695 1696STEXI 1697@item block_passwd @var{device} @var{password} 1698@findex block_passwd 1699Set the encrypted device @var{device} password to @var{password} 1700 1701This command is now obsolete and will always return an error since 2.10 1702ETEXI 1703 1704 { 1705 .name = "block_set_io_throttle", 1706 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1707 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1708 .help = "change I/O throttle limits for a block drive", 1709 .cmd = hmp_block_set_io_throttle, 1710 }, 1711 1712STEXI 1713@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr} 1714@findex block_set_io_throttle 1715Change 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}. 1716@var{device} can be a block device name, a qdev ID or a QOM path. 1717ETEXI 1718 1719 { 1720 .name = "set_password", 1721 .args_type = "protocol:s,password:s,connected:s?", 1722 .params = "protocol password action-if-connected", 1723 .help = "set spice/vnc password", 1724 .cmd = hmp_set_password, 1725 }, 1726 1727STEXI 1728@item set_password [ vnc | spice ] password [ action-if-connected ] 1729@findex set_password 1730Change spice/vnc password. Use zero to make the password stay valid 1731forever. @var{action-if-connected} specifies what should happen in 1732case a connection is established: @var{fail} makes the password change 1733fail. @var{disconnect} changes the password and disconnects the 1734client. @var{keep} changes the password and keeps the connection up. 1735@var{keep} is the default. 1736ETEXI 1737 1738 { 1739 .name = "expire_password", 1740 .args_type = "protocol:s,time:s", 1741 .params = "protocol time", 1742 .help = "set spice/vnc password expire-time", 1743 .cmd = hmp_expire_password, 1744 }, 1745 1746STEXI 1747@item expire_password [ vnc | spice ] expire-time 1748@findex expire_password 1749Specify when a password for spice/vnc becomes 1750invalid. @var{expire-time} accepts: 1751 1752@table @var 1753@item now 1754Invalidate password instantly. 1755 1756@item never 1757Password stays valid forever. 1758 1759@item +nsec 1760Password stays valid for @var{nsec} seconds starting now. 1761 1762@item nsec 1763Password is invalidated at the given time. @var{nsec} are the seconds 1764passed since 1970, i.e. unix epoch. 1765 1766@end table 1767ETEXI 1768 1769 { 1770 .name = "chardev-add", 1771 .args_type = "args:s", 1772 .params = "args", 1773 .help = "add chardev", 1774 .cmd = hmp_chardev_add, 1775 .command_completion = chardev_add_completion, 1776 }, 1777 1778STEXI 1779@item chardev-add args 1780@findex chardev-add 1781chardev-add accepts the same parameters as the -chardev command line switch. 1782 1783ETEXI 1784 1785 { 1786 .name = "chardev-change", 1787 .args_type = "id:s,args:s", 1788 .params = "id args", 1789 .help = "change chardev", 1790 .cmd = hmp_chardev_change, 1791 }, 1792 1793STEXI 1794@item chardev-change args 1795@findex chardev-change 1796chardev-change accepts existing chardev @var{id} and then the same arguments 1797as the -chardev command line switch (except for "id"). 1798 1799ETEXI 1800 1801 { 1802 .name = "chardev-remove", 1803 .args_type = "id:s", 1804 .params = "id", 1805 .help = "remove chardev", 1806 .cmd = hmp_chardev_remove, 1807 .command_completion = chardev_remove_completion, 1808 }, 1809 1810STEXI 1811@item chardev-remove id 1812@findex chardev-remove 1813Removes the chardev @var{id}. 1814 1815ETEXI 1816 1817 { 1818 .name = "chardev-send-break", 1819 .args_type = "id:s", 1820 .params = "id", 1821 .help = "send a break on chardev", 1822 .cmd = hmp_chardev_send_break, 1823 .command_completion = chardev_remove_completion, 1824 }, 1825 1826STEXI 1827@item chardev-send-break id 1828@findex chardev-send-break 1829Send a break on the chardev @var{id}. 1830 1831ETEXI 1832 1833 { 1834 .name = "qemu-io", 1835 .args_type = "device:B,command:s", 1836 .params = "[device] \"[command]\"", 1837 .help = "run a qemu-io command on a block device", 1838 .cmd = hmp_qemu_io, 1839 }, 1840 1841STEXI 1842@item qemu-io @var{device} @var{command} 1843@findex qemu-io 1844Executes a qemu-io command on the given block device. 1845 1846ETEXI 1847 1848 { 1849 .name = "cpu-add", 1850 .args_type = "id:i", 1851 .params = "id", 1852 .help = "add cpu (deprecated, use device_add instead)", 1853 .cmd = hmp_cpu_add, 1854 }, 1855 1856STEXI 1857@item cpu-add @var{id} 1858@findex cpu-add 1859Add CPU with id @var{id}. This command is deprecated, please 1860+use @code{device_add} instead. For details, refer to 1861'docs/cpu-hotplug.rst'. 1862ETEXI 1863 1864 { 1865 .name = "qom-list", 1866 .args_type = "path:s?", 1867 .params = "path", 1868 .help = "list QOM properties", 1869 .cmd = hmp_qom_list, 1870 .flags = "p", 1871 }, 1872 1873STEXI 1874@item qom-list [@var{path}] 1875Print QOM properties of object at location @var{path} 1876ETEXI 1877 1878 { 1879 .name = "qom-set", 1880 .args_type = "path:s,property:s,value:s", 1881 .params = "path property value", 1882 .help = "set QOM property", 1883 .cmd = hmp_qom_set, 1884 .flags = "p", 1885 }, 1886 1887STEXI 1888@item qom-set @var{path} @var{property} @var{value} 1889Set QOM property @var{property} of object at location @var{path} to value @var{value} 1890ETEXI 1891 1892 { 1893 .name = "info", 1894 .args_type = "item:s?", 1895 .params = "[subcommand]", 1896 .help = "show various information about the system state", 1897 .cmd = hmp_info_help, 1898 .sub_table = info_cmds, 1899 .flags = "p", 1900 }, 1901 1902STEXI 1903@end table 1904ETEXI 1905