hmp-commands.hx (51833B)
1HXCOMM Use DEFHEADING() to define headings in both help text and rST. 2HXCOMM Text between SRST and ERST is copied to the rST 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 rST and C. 7 8 9 { 10 .name = "help|?", 11 .args_type = "name:S?", 12 .params = "[cmd]", 13 .help = "show the help", 14 .cmd = do_help_cmd, 15 .flags = "p", 16 }, 17 18SRST 19``help`` or ``?`` [*cmd*] 20 Show the help for all commands or just for command *cmd*. 21ERST 22 23 { 24 .name = "commit", 25 .args_type = "device:B", 26 .params = "device|all", 27 .help = "commit changes to the disk images (if -snapshot is used) or backing files", 28 .cmd = hmp_commit, 29 }, 30 31SRST 32``commit`` 33 Commit changes to the disk images (if -snapshot is used) or backing files. 34 If the backing file is smaller than the snapshot, then the backing file 35 will be resized to be the same size as the snapshot. If the snapshot is 36 smaller than the backing file, the backing file will not be truncated. 37 If you want the backing file to match the size of the smaller snapshot, 38 you can safely truncate it yourself once the commit operation successfully 39 completes. 40ERST 41 42 { 43 .name = "quit|q", 44 .args_type = "", 45 .params = "", 46 .help = "quit the emulator", 47 .cmd = hmp_quit, 48 .flags = "p", 49 }, 50 51SRST 52``quit`` or ``q`` 53 Quit the emulator. 54ERST 55 56 { 57 .name = "exit_preconfig", 58 .args_type = "", 59 .params = "", 60 .help = "exit the preconfig state", 61 .cmd = hmp_exit_preconfig, 62 .flags = "p", 63 }, 64 65SRST 66``exit_preconfig`` 67 This command makes QEMU exit the preconfig state and proceed with 68 VM initialization using configuration data provided on the command line 69 and via the QMP monitor during the preconfig state. The command is only 70 available during the preconfig state (i.e. when the --preconfig command 71 line option was in use). 72ERST 73 74 { 75 .name = "block_resize", 76 .args_type = "device:B,size:o", 77 .params = "device size", 78 .help = "resize a block image", 79 .cmd = hmp_block_resize, 80 .coroutine = true, 81 }, 82 83SRST 84``block_resize`` 85 Resize a block image while a guest is running. Usually requires guest 86 action to see the updated size. Resize to a lower size is supported, 87 but should be used with extreme caution. Note that this command only 88 resizes image files, it can not resize block devices like LVM volumes. 89ERST 90 91 { 92 .name = "block_stream", 93 .args_type = "device:B,speed:o?,base:s?", 94 .params = "device [speed [base]]", 95 .help = "copy data from a backing file into a block device", 96 .cmd = hmp_block_stream, 97 }, 98 99SRST 100``block_stream`` 101 Copy data from a backing file into a block device. 102ERST 103 104 { 105 .name = "block_job_set_speed", 106 .args_type = "device:B,speed:o", 107 .params = "device speed", 108 .help = "set maximum speed for a background block operation", 109 .cmd = hmp_block_job_set_speed, 110 }, 111 112SRST 113``block_job_set_speed`` 114 Set maximum speed for a background block operation. 115ERST 116 117 { 118 .name = "block_job_cancel", 119 .args_type = "force:-f,device:B", 120 .params = "[-f] device", 121 .help = "stop an active background block operation (use -f" 122 "\n\t\t\t if you want to abort the operation immediately" 123 "\n\t\t\t instead of keep running until data is in sync)", 124 .cmd = hmp_block_job_cancel, 125 }, 126 127SRST 128``block_job_cancel`` 129 Stop an active background block operation (streaming, mirroring). 130ERST 131 132 { 133 .name = "block_job_complete", 134 .args_type = "device:B", 135 .params = "device", 136 .help = "stop an active background block operation", 137 .cmd = hmp_block_job_complete, 138 }, 139 140SRST 141``block_job_complete`` 142 Manually trigger completion of an active background block operation. 143 For mirroring, this will switch the device to the destination path. 144ERST 145 146 { 147 .name = "block_job_pause", 148 .args_type = "device:B", 149 .params = "device", 150 .help = "pause an active background block operation", 151 .cmd = hmp_block_job_pause, 152 }, 153 154SRST 155``block_job_pause`` 156 Pause an active block streaming operation. 157ERST 158 159 { 160 .name = "block_job_resume", 161 .args_type = "device:B", 162 .params = "device", 163 .help = "resume a paused background block operation", 164 .cmd = hmp_block_job_resume, 165 }, 166 167SRST 168``block_job_resume`` 169 Resume a paused block streaming operation. 170ERST 171 172 { 173 .name = "eject", 174 .args_type = "force:-f,device:B", 175 .params = "[-f] device", 176 .help = "eject a removable medium (use -f to force it)", 177 .cmd = hmp_eject, 178 }, 179 180SRST 181``eject [-f]`` *device* 182 Eject a removable medium (use -f to force it). 183ERST 184 185 { 186 .name = "drive_del", 187 .args_type = "id:B", 188 .params = "device", 189 .help = "remove host block device", 190 .cmd = hmp_drive_del, 191 }, 192 193SRST 194``drive_del`` *device* 195 Remove host block device. The result is that guest generated IO is no longer 196 submitted against the host device underlying the disk. Once a drive has 197 been deleted, the QEMU Block layer returns -EIO which results in IO 198 errors in the guest for applications that are reading/writing to the device. 199 These errors are always reported to the guest, regardless of the drive's error 200 actions (drive options rerror, werror). 201ERST 202 203 { 204 .name = "change", 205 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?", 206 .params = "device filename [format [read-only-mode]]", 207 .help = "change a removable medium, optional format", 208 .cmd = hmp_change, 209 }, 210 211SRST 212``change`` *device* *setting* 213 Change the configuration of a device. 214 215 ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]] 216 Change the medium for a removable disk device to point to *filename*. eg:: 217 218 (qemu) change ide1-cd0 /path/to/some.iso 219 220 *format* is optional. 221 222 *read-only-mode* may be used to change the read-only status of the device. 223 It accepts the following values: 224 225 retain 226 Retains the current status; this is the default. 227 228 read-only 229 Makes the device read-only. 230 231 read-write 232 Makes the device writable. 233 234 ``change vnc password`` [*password*] 235 236 Change the password associated with the VNC server. If the new password 237 is not supplied, the monitor will prompt for it to be entered. VNC 238 passwords are only significant up to 8 letters. eg:: 239 240 (qemu) change vnc password 241 Password: ******** 242 243ERST 244 245 { 246 .name = "screendump", 247 .args_type = "filename:F,device:s?,head:i?", 248 .params = "filename [device [head]]", 249 .help = "save screen from head 'head' of display device 'device' " 250 "into PPM image 'filename'", 251 .cmd = hmp_screendump, 252 .coroutine = true, 253 }, 254 255SRST 256``screendump`` *filename* 257 Save screen into PPM image *filename*. 258ERST 259 260 { 261 .name = "logfile", 262 .args_type = "filename:F", 263 .params = "filename", 264 .help = "output logs to 'filename'", 265 .cmd = hmp_logfile, 266 }, 267 268SRST 269``logfile`` *filename* 270 Output logs to *filename*. 271ERST 272 273 { 274 .name = "trace-event", 275 .args_type = "name:s,option:b,vcpu:i?", 276 .params = "name on|off [vcpu]", 277 .help = "changes status of a specific trace event " 278 "(vcpu: vCPU to set, default is all)", 279 .cmd = hmp_trace_event, 280 .command_completion = trace_event_completion, 281 }, 282 283SRST 284``trace-event`` 285 changes status of a trace event 286ERST 287 288#if defined(CONFIG_TRACE_SIMPLE) 289 { 290 .name = "trace-file", 291 .args_type = "op:s?,arg:F?", 292 .params = "on|off|flush|set [arg]", 293 .help = "open, close, or flush trace file, or set a new file name", 294 .cmd = hmp_trace_file, 295 }, 296 297SRST 298``trace-file on|off|flush`` 299 Open, close, or flush the trace file. If no argument is given, the 300 status of the trace file is displayed. 301ERST 302#endif 303 304 { 305 .name = "log", 306 .args_type = "items:s", 307 .params = "item1[,...]", 308 .help = "activate logging of the specified items", 309 .cmd = hmp_log, 310 }, 311 312SRST 313``log`` *item1*\ [,...] 314 Activate logging of the specified items. 315ERST 316 317 { 318 .name = "savevm", 319 .args_type = "name:s?", 320 .params = "tag", 321 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created", 322 .cmd = hmp_savevm, 323 }, 324 325SRST 326``savevm`` *tag* 327 Create a snapshot of the whole virtual machine. If *tag* is 328 provided, it is used as human readable identifier. If there is already 329 a snapshot with the same tag, it is replaced. More info at 330 :ref:`vm_005fsnapshots`. 331 332 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting 333 only *tag* as parameter. 334ERST 335 336 { 337 .name = "loadvm", 338 .args_type = "name:s", 339 .params = "tag", 340 .help = "restore a VM snapshot from its tag", 341 .cmd = hmp_loadvm, 342 .command_completion = loadvm_completion, 343 }, 344 345SRST 346``loadvm`` *tag* 347 Set the whole virtual machine to the snapshot identified by the tag 348 *tag*. 349 350 Since 4.0, loadvm stopped accepting snapshot id as parameter. 351ERST 352 353 { 354 .name = "delvm", 355 .args_type = "name:s", 356 .params = "tag", 357 .help = "delete a VM snapshot from its tag", 358 .cmd = hmp_delvm, 359 .command_completion = delvm_completion, 360 }, 361 362SRST 363``delvm`` *tag* 364 Delete the snapshot identified by *tag*. 365 366 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting 367 only *tag* as parameter. 368ERST 369 370 { 371 .name = "singlestep", 372 .args_type = "option:s?", 373 .params = "[on|off]", 374 .help = "run emulation in singlestep mode or switch to normal mode", 375 .cmd = hmp_singlestep, 376 }, 377 378SRST 379``singlestep [off]`` 380 Run the emulation in single step mode. 381 If called with option off, the emulation returns to normal mode. 382ERST 383 384 { 385 .name = "stop", 386 .args_type = "", 387 .params = "", 388 .help = "stop emulation", 389 .cmd = hmp_stop, 390 }, 391 392SRST 393``stop`` 394 Stop emulation. 395ERST 396 397 { 398 .name = "cont|c", 399 .args_type = "", 400 .params = "", 401 .help = "resume emulation", 402 .cmd = hmp_cont, 403 }, 404 405SRST 406``cont`` or ``c`` 407 Resume emulation. 408ERST 409 410 { 411 .name = "system_wakeup", 412 .args_type = "", 413 .params = "", 414 .help = "wakeup guest from suspend", 415 .cmd = hmp_system_wakeup, 416 }, 417 418SRST 419``system_wakeup`` 420 Wakeup guest from suspend. 421ERST 422 423 { 424 .name = "gdbserver", 425 .args_type = "device:s?", 426 .params = "[device]", 427 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 428 .cmd = hmp_gdbserver, 429 }, 430 431SRST 432``gdbserver`` [*port*] 433 Start gdbserver session (default *port*\=1234) 434ERST 435 436 { 437 .name = "x", 438 .args_type = "fmt:/,addr:l", 439 .params = "/fmt addr", 440 .help = "virtual memory dump starting at 'addr'", 441 .cmd = hmp_memory_dump, 442 }, 443 444SRST 445``x/``\ *fmt* *addr* 446 Virtual memory dump starting at *addr*. 447ERST 448 449 { 450 .name = "xp", 451 .args_type = "fmt:/,addr:l", 452 .params = "/fmt addr", 453 .help = "physical memory dump starting at 'addr'", 454 .cmd = hmp_physical_memory_dump, 455 }, 456 457SRST 458``xp /``\ *fmt* *addr* 459 Physical memory dump starting at *addr*. 460 461 *fmt* is a format which tells the command how to format the 462 data. Its syntax is: ``/{count}{format}{size}`` 463 464 *count* 465 is the number of items to be dumped. 466 *format* 467 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 468 c (char) or i (asm instruction). 469 *size* 470 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 471 ``h`` or ``w`` can be specified with the ``i`` format to 472 respectively select 16 or 32 bit code instruction size. 473 474 Examples: 475 476 Dump 10 instructions at the current instruction pointer:: 477 478 (qemu) x/10i $eip 479 0x90107063: ret 480 0x90107064: sti 481 0x90107065: lea 0x0(%esi,1),%esi 482 0x90107069: lea 0x0(%edi,1),%edi 483 0x90107070: ret 484 0x90107071: jmp 0x90107080 485 0x90107073: nop 486 0x90107074: nop 487 0x90107075: nop 488 0x90107076: nop 489 490 Dump 80 16 bit values at the start of the video memory:: 491 492 (qemu) xp/80hx 0xb8000 493 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 494 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 495 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 496 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 497 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 498 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 499 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 500 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 501 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 502 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 503 504ERST 505 506 { 507 .name = "gpa2hva", 508 .args_type = "addr:l", 509 .params = "addr", 510 .help = "print the host virtual address corresponding to a guest physical address", 511 .cmd = hmp_gpa2hva, 512 }, 513 514SRST 515``gpa2hva`` *addr* 516 Print the host virtual address at which the guest's physical address *addr* 517 is mapped. 518ERST 519 520#ifdef CONFIG_LINUX 521 { 522 .name = "gpa2hpa", 523 .args_type = "addr:l", 524 .params = "addr", 525 .help = "print the host physical address corresponding to a guest physical address", 526 .cmd = hmp_gpa2hpa, 527 }, 528#endif 529 530SRST 531``gpa2hpa`` *addr* 532 Print the host physical address at which the guest's physical address *addr* 533 is mapped. 534ERST 535 536 { 537 .name = "gva2gpa", 538 .args_type = "addr:l", 539 .params = "addr", 540 .help = "print the guest physical address corresponding to a guest virtual address", 541 .cmd = hmp_gva2gpa, 542 }, 543 544SRST 545``gva2gpa`` *addr* 546 Print the guest physical address at which the guest's virtual address *addr* 547 is mapped based on the mapping for the current CPU. 548ERST 549 550 { 551 .name = "print|p", 552 .args_type = "fmt:/,val:l", 553 .params = "/fmt expr", 554 .help = "print expression value (use $reg for CPU register access)", 555 .cmd = do_print, 556 }, 557 558SRST 559``print`` or ``p/``\ *fmt* *expr* 560 Print expression value. Only the *format* part of *fmt* is 561 used. 562ERST 563 564 { 565 .name = "i", 566 .args_type = "fmt:/,addr:i,index:i.", 567 .params = "/fmt addr", 568 .help = "I/O port read", 569 .cmd = hmp_ioport_read, 570 }, 571 572SRST 573``i/``\ *fmt* *addr* [.\ *index*\ ] 574 Read I/O port. 575ERST 576 577 { 578 .name = "o", 579 .args_type = "fmt:/,addr:i,val:i", 580 .params = "/fmt addr value", 581 .help = "I/O port write", 582 .cmd = hmp_ioport_write, 583 }, 584 585SRST 586``o/``\ *fmt* *addr* *val* 587 Write to I/O port. 588ERST 589 590 { 591 .name = "sendkey", 592 .args_type = "keys:s,hold-time:i?", 593 .params = "keys [hold_ms]", 594 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 595 .cmd = hmp_sendkey, 596 .command_completion = sendkey_completion, 597 }, 598 599SRST 600``sendkey`` *keys* 601 Send *keys* to the guest. *keys* could be the name of the 602 key or the raw value in hexadecimal format. Use ``-`` to press 603 several keys simultaneously. Example:: 604 605 sendkey ctrl-alt-f1 606 607 This command is useful to send keys that your graphical user interface 608 intercepts at low level, such as ``ctrl-alt-f1`` in X Window. 609ERST 610 { 611 .name = "sync-profile", 612 .args_type = "op:s?", 613 .params = "[on|off|reset]", 614 .help = "enable, disable or reset synchronization profiling. " 615 "With no arguments, prints whether profiling is on or off.", 616 .cmd = hmp_sync_profile, 617 }, 618 619SRST 620``sync-profile [on|off|reset]`` 621 Enable, disable or reset synchronization profiling. With no arguments, prints 622 whether profiling is on or off. 623ERST 624 625 { 626 .name = "system_reset", 627 .args_type = "", 628 .params = "", 629 .help = "reset the system", 630 .cmd = hmp_system_reset, 631 }, 632 633SRST 634``system_reset`` 635 Reset the system. 636ERST 637 638 { 639 .name = "system_powerdown", 640 .args_type = "", 641 .params = "", 642 .help = "send system power down event", 643 .cmd = hmp_system_powerdown, 644 }, 645 646SRST 647``system_powerdown`` 648 Power down the system (if supported). 649ERST 650 651 { 652 .name = "sum", 653 .args_type = "start:i,size:i", 654 .params = "addr size", 655 .help = "compute the checksum of a memory region", 656 .cmd = hmp_sum, 657 }, 658 659SRST 660``sum`` *addr* *size* 661 Compute the checksum of a memory region. 662ERST 663 664 { 665 .name = "device_add", 666 .args_type = "device:O", 667 .params = "driver[,prop=value][,...]", 668 .help = "add device, like -device on the command line", 669 .cmd = hmp_device_add, 670 .command_completion = device_add_completion, 671 }, 672 673SRST 674``device_add`` *config* 675 Add device. 676ERST 677 678 { 679 .name = "device_del", 680 .args_type = "id:s", 681 .params = "device", 682 .help = "remove device", 683 .cmd = hmp_device_del, 684 .command_completion = device_del_completion, 685 }, 686 687SRST 688``device_del`` *id* 689 Remove device *id*. *id* may be a short ID 690 or a QOM object path. 691ERST 692 693 { 694 .name = "cpu", 695 .args_type = "index:i", 696 .params = "index", 697 .help = "set the default CPU", 698 .cmd = hmp_cpu, 699 }, 700 701SRST 702``cpu`` *index* 703 Set the default CPU. 704ERST 705 706 { 707 .name = "mouse_move", 708 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 709 .params = "dx dy [dz]", 710 .help = "send mouse move events", 711 .cmd = hmp_mouse_move, 712 }, 713 714SRST 715``mouse_move`` *dx* *dy* [*dz*] 716 Move the active mouse to the specified coordinates *dx* *dy* 717 with optional scroll axis *dz*. 718ERST 719 720 { 721 .name = "mouse_button", 722 .args_type = "button_state:i", 723 .params = "state", 724 .help = "change mouse button state (1=L, 2=M, 4=R)", 725 .cmd = hmp_mouse_button, 726 }, 727 728SRST 729``mouse_button`` *val* 730 Change the active mouse button state *val* (1=L, 2=M, 4=R). 731ERST 732 733 { 734 .name = "mouse_set", 735 .args_type = "index:i", 736 .params = "index", 737 .help = "set which mouse device receives events", 738 .cmd = hmp_mouse_set, 739 }, 740 741SRST 742``mouse_set`` *index* 743 Set which mouse device receives events at given *index*, index 744 can be obtained with:: 745 746 info mice 747 748ERST 749 750 { 751 .name = "wavcapture", 752 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?", 753 .params = "path audiodev [frequency [bits [channels]]]", 754 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 755 .cmd = hmp_wavcapture, 756 }, 757SRST 758``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]] 759 Capture audio into *filename* from *audiodev*, using sample rate 760 *frequency* bits per sample *bits* and number of channels 761 *channels*. 762 763 Defaults: 764 765 - Sample rate = 44100 Hz - CD quality 766 - Bits = 16 767 - Number of channels = 2 - Stereo 768ERST 769 770 { 771 .name = "stopcapture", 772 .args_type = "n:i", 773 .params = "capture index", 774 .help = "stop capture", 775 .cmd = hmp_stopcapture, 776 }, 777SRST 778``stopcapture`` *index* 779 Stop capture with a given *index*, index can be obtained with:: 780 781 info capture 782 783ERST 784 785 { 786 .name = "memsave", 787 .args_type = "val:l,size:i,filename:s", 788 .params = "addr size file", 789 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'", 790 .cmd = hmp_memsave, 791 }, 792 793SRST 794``memsave`` *addr* *size* *file* 795 save to disk virtual memory dump starting at *addr* of size *size*. 796ERST 797 798 { 799 .name = "pmemsave", 800 .args_type = "val:l,size:i,filename:s", 801 .params = "addr size file", 802 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 803 .cmd = hmp_pmemsave, 804 }, 805 806SRST 807``pmemsave`` *addr* *size* *file* 808 save to disk physical memory dump starting at *addr* of size *size*. 809ERST 810 811 { 812 .name = "boot_set", 813 .args_type = "bootdevice:s", 814 .params = "bootdevice", 815 .help = "define new values for the boot device list", 816 .cmd = hmp_boot_set, 817 }, 818 819SRST 820``boot_set`` *bootdevicelist* 821 Define new values for the boot device list. Those values will override 822 the values specified on the command line through the ``-boot`` option. 823 824 The values that can be specified here depend on the machine type, but are 825 the same that can be specified in the ``-boot`` command line option. 826ERST 827 828 { 829 .name = "nmi", 830 .args_type = "", 831 .params = "", 832 .help = "inject an NMI", 833 .cmd = hmp_nmi, 834 }, 835SRST 836``nmi`` *cpu* 837 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64). 838ERST 839 840 { 841 .name = "ringbuf_write", 842 .args_type = "device:s,data:s", 843 .params = "device data", 844 .help = "Write to a ring buffer character device", 845 .cmd = hmp_ringbuf_write, 846 .command_completion = ringbuf_write_completion, 847 }, 848 849SRST 850``ringbuf_write`` *device* *data* 851 Write *data* to ring buffer character device *device*. 852 *data* must be a UTF-8 string. 853ERST 854 855 { 856 .name = "ringbuf_read", 857 .args_type = "device:s,size:i", 858 .params = "device size", 859 .help = "Read from a ring buffer character device", 860 .cmd = hmp_ringbuf_read, 861 .command_completion = ringbuf_write_completion, 862 }, 863 864SRST 865``ringbuf_read`` *device* 866 Read and print up to *size* bytes from ring buffer character 867 device *device*. 868 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the 869 character code in hexadecimal. Character ``\`` is printed ``\\``. 870 Bug: can screw up when the buffer contains invalid UTF-8 sequences, 871 NUL characters, after the ring buffer lost data, and when reading 872 stops because the size limit is reached. 873ERST 874 875 { 876 .name = "announce_self", 877 .args_type = "interfaces:s?,id:s?", 878 .params = "[interfaces] [id]", 879 .help = "Trigger GARP/RARP announcements", 880 .cmd = hmp_announce_self, 881 }, 882 883SRST 884``announce_self`` 885 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly 886 updating the network infrastructure after a reconfiguration or some forms 887 of migration. The timings of the round are set by the migration announce 888 parameters. An optional comma separated *interfaces* list restricts the 889 announce to the named set of interfaces. An optional *id* can be used to 890 start a separate announce timer and to change the parameters of it later. 891ERST 892 893 { 894 .name = "migrate", 895 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s", 896 .params = "[-d] [-b] [-i] [-r] uri", 897 .help = "migrate to URI (using -d to not wait for completion)" 898 "\n\t\t\t -b for migration without shared storage with" 899 " full copy of disk\n\t\t\t -i for migration without " 900 "shared storage with incremental copy of disk " 901 "(base image shared between src and destination)" 902 "\n\t\t\t -r to resume a paused migration", 903 .cmd = hmp_migrate, 904 }, 905 906 907SRST 908``migrate [-d] [-b] [-i]`` *uri* 909 Migrate to *uri* (using -d to not wait for completion). 910 911 ``-b`` 912 for migration with full copy of disk 913 ``-i`` 914 for migration with incremental copy of disk (base image is shared) 915ERST 916 917 { 918 .name = "migrate_cancel", 919 .args_type = "", 920 .params = "", 921 .help = "cancel the current VM migration", 922 .cmd = hmp_migrate_cancel, 923 }, 924 925SRST 926``migrate_cancel`` 927 Cancel the current VM migration. 928ERST 929 930 { 931 .name = "migrate_continue", 932 .args_type = "state:s", 933 .params = "state", 934 .help = "Continue migration from the given paused state", 935 .cmd = hmp_migrate_continue, 936 }, 937SRST 938``migrate_continue`` *state* 939 Continue migration from the paused state *state* 940ERST 941 942 { 943 .name = "migrate_incoming", 944 .args_type = "uri:s", 945 .params = "uri", 946 .help = "Continue an incoming migration from an -incoming defer", 947 .cmd = hmp_migrate_incoming, 948 }, 949 950SRST 951``migrate_incoming`` *uri* 952 Continue an incoming migration using the *uri* (that has the same syntax 953 as the ``-incoming`` option). 954ERST 955 956 { 957 .name = "migrate_recover", 958 .args_type = "uri:s", 959 .params = "uri", 960 .help = "Continue a paused incoming postcopy migration", 961 .cmd = hmp_migrate_recover, 962 }, 963 964SRST 965``migrate_recover`` *uri* 966 Continue a paused incoming postcopy migration using the *uri*. 967ERST 968 969 { 970 .name = "migrate_pause", 971 .args_type = "", 972 .params = "", 973 .help = "Pause an ongoing migration (postcopy-only)", 974 .cmd = hmp_migrate_pause, 975 }, 976 977SRST 978``migrate_pause`` 979 Pause an ongoing migration. Currently it only supports postcopy. 980ERST 981 982 { 983 .name = "migrate_set_capability", 984 .args_type = "capability:s,state:b", 985 .params = "capability state", 986 .help = "Enable/Disable the usage of a capability for migration", 987 .cmd = hmp_migrate_set_capability, 988 .command_completion = migrate_set_capability_completion, 989 }, 990 991SRST 992``migrate_set_capability`` *capability* *state* 993 Enable/Disable the usage of a capability *capability* for migration. 994ERST 995 996 { 997 .name = "migrate_set_parameter", 998 .args_type = "parameter:s,value:s", 999 .params = "parameter value", 1000 .help = "Set the parameter for migration", 1001 .cmd = hmp_migrate_set_parameter, 1002 .command_completion = migrate_set_parameter_completion, 1003 }, 1004 1005SRST 1006``migrate_set_parameter`` *parameter* *value* 1007 Set the parameter *parameter* for migration. 1008ERST 1009 1010 { 1011 .name = "migrate_start_postcopy", 1012 .args_type = "", 1013 .params = "", 1014 .help = "Followup to a migration command to switch the migration" 1015 " to postcopy mode. The postcopy-ram capability must " 1016 "be set on both source and destination before the " 1017 "original migration command .", 1018 .cmd = hmp_migrate_start_postcopy, 1019 }, 1020 1021SRST 1022``migrate_start_postcopy`` 1023 Switch in-progress migration to postcopy mode. Ignored after the end of 1024 migration (or once already in postcopy). 1025ERST 1026 1027 { 1028 .name = "x_colo_lost_heartbeat", 1029 .args_type = "", 1030 .params = "", 1031 .help = "Tell COLO that heartbeat is lost,\n\t\t\t" 1032 "a failover or takeover is needed.", 1033 .cmd = hmp_x_colo_lost_heartbeat, 1034 }, 1035 1036SRST 1037``x_colo_lost_heartbeat`` 1038 Tell COLO that heartbeat is lost, a failover or takeover is needed. 1039ERST 1040 1041 { 1042 .name = "client_migrate_info", 1043 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 1044 .params = "protocol hostname port tls-port cert-subject", 1045 .help = "set migration information for remote display", 1046 .cmd = hmp_client_migrate_info, 1047 }, 1048 1049SRST 1050``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject* 1051 Set migration information for remote display. This makes the server 1052 ask the client to automatically reconnect using the new parameters 1053 once migration finished successfully. Only implemented for SPICE. 1054ERST 1055 1056 { 1057 .name = "dump-guest-memory", 1058 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", 1059 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]", 1060 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1061 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1062 "-d: return immediately (do not wait for completion).\n\t\t\t" 1063 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1064 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1065 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1066 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t" 1067 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t" 1068 "begin: the starting physical address.\n\t\t\t" 1069 "length: the memory size, in bytes.", 1070 .cmd = hmp_dump_guest_memory, 1071 }, 1072 1073SRST 1074``dump-guest-memory [-p]`` *filename* *begin* *length* 1075 \ 1076``dump-guest-memory [-z|-l|-s|-w]`` *filename* 1077 Dump guest memory to *protocol*. The file can be processed with crash or 1078 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF. 1079 1080 ``-p`` 1081 do paging to get guest's memory mapping. 1082 ``-z`` 1083 dump in kdump-compressed format, with zlib compression. 1084 ``-l`` 1085 dump in kdump-compressed format, with lzo compression. 1086 ``-s`` 1087 dump in kdump-compressed format, with snappy compression. 1088 ``-w`` 1089 dump in Windows crashdump format (can be used instead of ELF-dump converting), 1090 for Windows x64 guests with vmcoreinfo driver only 1091 *filename* 1092 dump file name. 1093 *begin* 1094 the starting physical address. It's optional, and should be 1095 specified together with *length*. 1096 *length* 1097 the memory size, in bytes. It's optional, and should be specified 1098 together with *begin*. 1099 1100ERST 1101 1102#if defined(TARGET_S390X) 1103 { 1104 .name = "dump-skeys", 1105 .args_type = "filename:F", 1106 .params = "", 1107 .help = "Save guest storage keys into file 'filename'.\n", 1108 .cmd = hmp_dump_skeys, 1109 }, 1110#endif 1111 1112SRST 1113``dump-skeys`` *filename* 1114 Save guest storage keys to a file. 1115ERST 1116 1117#if defined(TARGET_S390X) 1118 { 1119 .name = "migration_mode", 1120 .args_type = "mode:i", 1121 .params = "mode", 1122 .help = "Enables or disables migration mode\n", 1123 .cmd = hmp_migrationmode, 1124 }, 1125#endif 1126 1127SRST 1128``migration_mode`` *mode* 1129 Enables or disables migration mode. 1130ERST 1131 1132 { 1133 .name = "snapshot_blkdev", 1134 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1135 .params = "[-n] device [new-image-file] [format]", 1136 .help = "initiates a live snapshot\n\t\t\t" 1137 "of device. If a new image file is specified, the\n\t\t\t" 1138 "new image file will become the new root image.\n\t\t\t" 1139 "If format is specified, the snapshot file will\n\t\t\t" 1140 "be created in that format.\n\t\t\t" 1141 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1142 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1143 "recreating it from scratch.", 1144 .cmd = hmp_snapshot_blkdev, 1145 }, 1146 1147SRST 1148``snapshot_blkdev`` 1149 Snapshot device, using snapshot file as target if provided 1150ERST 1151 1152 { 1153 .name = "snapshot_blkdev_internal", 1154 .args_type = "device:B,name:s", 1155 .params = "device name", 1156 .help = "take an internal snapshot of device.\n\t\t\t" 1157 "The format of the image used by device must\n\t\t\t" 1158 "support it, such as qcow2.\n\t\t\t", 1159 .cmd = hmp_snapshot_blkdev_internal, 1160 }, 1161 1162SRST 1163``snapshot_blkdev_internal`` 1164 Take an internal snapshot on device if it support 1165ERST 1166 1167 { 1168 .name = "snapshot_delete_blkdev_internal", 1169 .args_type = "device:B,name:s,id:s?", 1170 .params = "device name [id]", 1171 .help = "delete an internal snapshot of device.\n\t\t\t" 1172 "If id is specified, qemu will try delete\n\t\t\t" 1173 "the snapshot matching both id and name.\n\t\t\t" 1174 "The format of the image used by device must\n\t\t\t" 1175 "support it, such as qcow2.\n\t\t\t", 1176 .cmd = hmp_snapshot_delete_blkdev_internal, 1177 }, 1178 1179SRST 1180``snapshot_delete_blkdev_internal`` 1181 Delete an internal snapshot on device if it support 1182ERST 1183 1184 { 1185 .name = "drive_mirror", 1186 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1187 .params = "[-n] [-f] device target [format]", 1188 .help = "initiates live storage\n\t\t\t" 1189 "migration for a device. The device's contents are\n\t\t\t" 1190 "copied to the new image file, including data that\n\t\t\t" 1191 "is written after the command is started.\n\t\t\t" 1192 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1193 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1194 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1195 "so that the result does not need a backing file.\n\t\t\t", 1196 .cmd = hmp_drive_mirror, 1197 }, 1198SRST 1199``drive_mirror`` 1200 Start mirroring a block device's writes to a new destination, 1201 using the specified target. 1202ERST 1203 1204 { 1205 .name = "drive_backup", 1206 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?", 1207 .params = "[-n] [-f] [-c] device target [format]", 1208 .help = "initiates a point-in-time\n\t\t\t" 1209 "copy for a device. The device's contents are\n\t\t\t" 1210 "copied to the new image file, excluding data that\n\t\t\t" 1211 "is written after the command is started.\n\t\t\t" 1212 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1213 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1214 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1215 "so that the result does not need a backing file.\n\t\t\t" 1216 "The -c flag requests QEMU to compress backup data\n\t\t\t" 1217 "(if the target format supports it).\n\t\t\t", 1218 .cmd = hmp_drive_backup, 1219 }, 1220SRST 1221``drive_backup`` 1222 Start a point-in-time copy of a block device to a specified target. 1223ERST 1224 1225 { 1226 .name = "drive_add", 1227 .args_type = "node:-n,pci_addr:s,opts:s", 1228 .params = "[-n] [[<domain>:]<bus>:]<slot>\n" 1229 "[file=file][,if=type][,bus=n]\n" 1230 "[,unit=m][,media=d][,index=i]\n" 1231 "[,snapshot=on|off][,cache=on|off]\n" 1232 "[,readonly=on|off][,copy-on-read=on|off]", 1233 .help = "add drive to PCI storage controller", 1234 .cmd = hmp_drive_add, 1235 }, 1236 1237SRST 1238``drive_add`` 1239 Add drive to PCI storage controller. 1240ERST 1241 1242 { 1243 .name = "pcie_aer_inject_error", 1244 .args_type = "advisory_non_fatal:-a,correctable:-c," 1245 "id:s,error_status:s," 1246 "header0:i?,header1:i?,header2:i?,header3:i?," 1247 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1248 .params = "[-a] [-c] id " 1249 "<error_status> [<tlp header> [<tlp header prefix>]]", 1250 .help = "inject pcie aer error\n\t\t\t" 1251 " -a for advisory non fatal error\n\t\t\t" 1252 " -c for correctable error\n\t\t\t" 1253 "<id> = qdev device id\n\t\t\t" 1254 "<error_status> = error string or 32bit\n\t\t\t" 1255 "<tlp header> = 32bit x 4\n\t\t\t" 1256 "<tlp header prefix> = 32bit x 4", 1257 .cmd = hmp_pcie_aer_inject_error, 1258 }, 1259 1260SRST 1261``pcie_aer_inject_error`` 1262 Inject PCIe AER error 1263ERST 1264 1265 { 1266 .name = "netdev_add", 1267 .args_type = "netdev:O", 1268 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]", 1269 .help = "add host network device", 1270 .cmd = hmp_netdev_add, 1271 .command_completion = netdev_add_completion, 1272 .flags = "p", 1273 }, 1274 1275SRST 1276``netdev_add`` 1277 Add host network device. 1278ERST 1279 1280 { 1281 .name = "netdev_del", 1282 .args_type = "id:s", 1283 .params = "id", 1284 .help = "remove host network device", 1285 .cmd = hmp_netdev_del, 1286 .command_completion = netdev_del_completion, 1287 .flags = "p", 1288 }, 1289 1290SRST 1291``netdev_del`` 1292 Remove host network device. 1293ERST 1294 1295 { 1296 .name = "object_add", 1297 .args_type = "object:S", 1298 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1299 .help = "create QOM object", 1300 .cmd = hmp_object_add, 1301 .command_completion = object_add_completion, 1302 .flags = "p", 1303 }, 1304 1305SRST 1306``object_add`` 1307 Create QOM object. 1308ERST 1309 1310 { 1311 .name = "object_del", 1312 .args_type = "id:s", 1313 .params = "id", 1314 .help = "destroy QOM object", 1315 .cmd = hmp_object_del, 1316 .command_completion = object_del_completion, 1317 .flags = "p", 1318 }, 1319 1320SRST 1321``object_del`` 1322 Destroy QOM object. 1323ERST 1324 1325#ifdef CONFIG_SLIRP 1326 { 1327 .name = "hostfwd_add", 1328 .args_type = "arg1:s,arg2:s?", 1329 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1330 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1331 .cmd = hmp_hostfwd_add, 1332 }, 1333#endif 1334SRST 1335``hostfwd_add`` 1336 Redirect TCP or UDP connections from host to guest (requires -net user). 1337ERST 1338 1339#ifdef CONFIG_SLIRP 1340 { 1341 .name = "hostfwd_remove", 1342 .args_type = "arg1:s,arg2:s?", 1343 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport", 1344 .help = "remove host-to-guest TCP or UDP redirection", 1345 .cmd = hmp_hostfwd_remove, 1346 }, 1347 1348#endif 1349SRST 1350``hostfwd_remove`` 1351 Remove host-to-guest TCP or UDP redirection. 1352ERST 1353 1354 { 1355 .name = "balloon", 1356 .args_type = "value:M", 1357 .params = "target", 1358 .help = "request VM to change its memory allocation (in MB)", 1359 .cmd = hmp_balloon, 1360 }, 1361 1362SRST 1363``balloon`` *value* 1364 Request VM to change its memory allocation to *value* (in MB). 1365ERST 1366 1367 { 1368 .name = "set_link", 1369 .args_type = "name:s,up:b", 1370 .params = "name on|off", 1371 .help = "change the link status of a network adapter", 1372 .cmd = hmp_set_link, 1373 .command_completion = set_link_completion, 1374 }, 1375 1376SRST 1377``set_link`` *name* ``[on|off]`` 1378 Switch link *name* on (i.e. up) or off (i.e. down). 1379ERST 1380 1381 { 1382 .name = "watchdog_action", 1383 .args_type = "action:s", 1384 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1385 .help = "change watchdog action", 1386 .cmd = hmp_watchdog_action, 1387 .command_completion = watchdog_action_completion, 1388 }, 1389 1390SRST 1391``watchdog_action`` 1392 Change watchdog action. 1393ERST 1394 1395 { 1396 .name = "nbd_server_start", 1397 .args_type = "all:-a,writable:-w,uri:s", 1398 .params = "nbd_server_start [-a] [-w] host:port", 1399 .help = "serve block devices on the given host and port", 1400 .cmd = hmp_nbd_server_start, 1401 }, 1402SRST 1403``nbd_server_start`` *host*:*port* 1404 Start an NBD server on the given host and/or port. If the ``-a`` 1405 option is included, all of the virtual machine's block devices that 1406 have an inserted media on them are automatically exported; in this case, 1407 the ``-w`` option makes the devices writable too. 1408ERST 1409 1410 { 1411 .name = "nbd_server_add", 1412 .args_type = "writable:-w,device:B,name:s?", 1413 .params = "nbd_server_add [-w] device [name]", 1414 .help = "export a block device via NBD", 1415 .cmd = hmp_nbd_server_add, 1416 }, 1417SRST 1418``nbd_server_add`` *device* [ *name* ] 1419 Export a block device through QEMU's NBD server, which must be started 1420 beforehand with ``nbd_server_start``. The ``-w`` option makes the 1421 exported device writable too. The export name is controlled by *name*, 1422 defaulting to *device*. 1423ERST 1424 1425 { 1426 .name = "nbd_server_remove", 1427 .args_type = "force:-f,name:s", 1428 .params = "nbd_server_remove [-f] name", 1429 .help = "remove an export previously exposed via NBD", 1430 .cmd = hmp_nbd_server_remove, 1431 }, 1432SRST 1433``nbd_server_remove [-f]`` *name* 1434 Stop exporting a block device through QEMU's NBD server, which was 1435 previously started with ``nbd_server_add``. The ``-f`` 1436 option forces the server to drop the export immediately even if 1437 clients are connected; otherwise the command fails unless there are no 1438 clients. 1439ERST 1440 1441 { 1442 .name = "nbd_server_stop", 1443 .args_type = "", 1444 .params = "nbd_server_stop", 1445 .help = "stop serving block devices using the NBD protocol", 1446 .cmd = hmp_nbd_server_stop, 1447 }, 1448SRST 1449``nbd_server_stop`` 1450 Stop the QEMU embedded NBD server. 1451ERST 1452 1453 1454#if defined(TARGET_I386) 1455 1456 { 1457 .name = "mce", 1458 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1459 .params = "[-b] cpu bank status mcgstatus addr misc", 1460 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1461 .cmd = hmp_mce, 1462 }, 1463 1464#endif 1465SRST 1466``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc* 1467 Inject an MCE on the given CPU (x86 only). 1468ERST 1469 1470 { 1471 .name = "getfd", 1472 .args_type = "fdname:s", 1473 .params = "getfd name", 1474 .help = "receive a file descriptor via SCM rights and assign it a name", 1475 .cmd = hmp_getfd, 1476 }, 1477 1478SRST 1479``getfd`` *fdname* 1480 If a file descriptor is passed alongside this command using the SCM_RIGHTS 1481 mechanism on unix sockets, it is stored using the name *fdname* for 1482 later use by other monitor commands. 1483ERST 1484 1485 { 1486 .name = "closefd", 1487 .args_type = "fdname:s", 1488 .params = "closefd name", 1489 .help = "close a file descriptor previously passed via SCM rights", 1490 .cmd = hmp_closefd, 1491 }, 1492 1493SRST 1494``closefd`` *fdname* 1495 Close the file descriptor previously assigned to *fdname* using the 1496 ``getfd`` command. This is only needed if the file descriptor was never 1497 used by another monitor command. 1498ERST 1499 1500 { 1501 .name = "block_set_io_throttle", 1502 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1503 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1504 .help = "change I/O throttle limits for a block drive", 1505 .cmd = hmp_block_set_io_throttle, 1506 }, 1507 1508SRST 1509``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr* 1510 Change I/O throttle limits for a block drive to 1511 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*. 1512 *device* can be a block device name, a qdev ID or a QOM path. 1513ERST 1514 1515 { 1516 .name = "set_password", 1517 .args_type = "protocol:s,password:s,connected:s?", 1518 .params = "protocol password action-if-connected", 1519 .help = "set spice/vnc password", 1520 .cmd = hmp_set_password, 1521 }, 1522 1523SRST 1524``set_password [ vnc | spice ] password [ action-if-connected ]`` 1525 Change spice/vnc password. *action-if-connected* specifies what 1526 should happen in case a connection is established: *fail* makes the 1527 password change fail. *disconnect* changes the password and 1528 disconnects the client. *keep* changes the password and keeps the 1529 connection up. *keep* is the default. 1530ERST 1531 1532 { 1533 .name = "expire_password", 1534 .args_type = "protocol:s,time:s", 1535 .params = "protocol time", 1536 .help = "set spice/vnc password expire-time", 1537 .cmd = hmp_expire_password, 1538 }, 1539 1540SRST 1541``expire_password [ vnc | spice ]`` *expire-time* 1542 Specify when a password for spice/vnc becomes 1543 invalid. *expire-time* accepts: 1544 1545 ``now`` 1546 Invalidate password instantly. 1547 ``never`` 1548 Password stays valid forever. 1549 ``+``\ *nsec* 1550 Password stays valid for *nsec* seconds starting now. 1551 *nsec* 1552 Password is invalidated at the given time. *nsec* are the seconds 1553 passed since 1970, i.e. unix epoch. 1554 1555ERST 1556 1557 { 1558 .name = "chardev-add", 1559 .args_type = "args:s", 1560 .params = "args", 1561 .help = "add chardev", 1562 .cmd = hmp_chardev_add, 1563 .command_completion = chardev_add_completion, 1564 }, 1565 1566SRST 1567``chardev-add`` *args* 1568 chardev-add accepts the same parameters as the -chardev command line switch. 1569ERST 1570 1571 { 1572 .name = "chardev-change", 1573 .args_type = "id:s,args:s", 1574 .params = "id args", 1575 .help = "change chardev", 1576 .cmd = hmp_chardev_change, 1577 }, 1578 1579SRST 1580``chardev-change`` *args* 1581 chardev-change accepts existing chardev *id* and then the same arguments 1582 as the -chardev command line switch (except for "id"). 1583ERST 1584 1585 { 1586 .name = "chardev-remove", 1587 .args_type = "id:s", 1588 .params = "id", 1589 .help = "remove chardev", 1590 .cmd = hmp_chardev_remove, 1591 .command_completion = chardev_remove_completion, 1592 }, 1593 1594SRST 1595``chardev-remove`` *id* 1596 Removes the chardev *id*. 1597ERST 1598 1599 { 1600 .name = "chardev-send-break", 1601 .args_type = "id:s", 1602 .params = "id", 1603 .help = "send a break on chardev", 1604 .cmd = hmp_chardev_send_break, 1605 .command_completion = chardev_remove_completion, 1606 }, 1607 1608SRST 1609``chardev-send-break`` *id* 1610 Send a break on the chardev *id*. 1611ERST 1612 1613 { 1614 .name = "qemu-io", 1615 .args_type = "qdev:-d,device:B,command:s", 1616 .params = "[-d] [device] \"[command]\"", 1617 .help = "run a qemu-io command on a block device\n\t\t\t" 1618 "-d: [device] is a device ID rather than a " 1619 "drive ID or node name", 1620 .cmd = hmp_qemu_io, 1621 }, 1622 1623SRST 1624``qemu-io`` *device* *command* 1625 Executes a qemu-io command on the given block device. 1626ERST 1627 1628 { 1629 .name = "qom-list", 1630 .args_type = "path:s?", 1631 .params = "path", 1632 .help = "list QOM properties", 1633 .cmd = hmp_qom_list, 1634 .flags = "p", 1635 }, 1636 1637SRST 1638``qom-list`` [*path*] 1639 Print QOM properties of object at location *path* 1640ERST 1641 1642 { 1643 .name = "qom-get", 1644 .args_type = "path:s,property:s", 1645 .params = "path property", 1646 .help = "print QOM property", 1647 .cmd = hmp_qom_get, 1648 .flags = "p", 1649 }, 1650 1651SRST 1652``qom-get`` *path* *property* 1653 Print QOM property *property* of object at location *path* 1654ERST 1655 1656 { 1657 .name = "qom-set", 1658 .args_type = "json:-j,path:s,property:s,value:S", 1659 .params = "[-j] path property value", 1660 .help = "set QOM property.\n\t\t\t" 1661 "-j: the value is specified in json format.", 1662 .cmd = hmp_qom_set, 1663 .flags = "p", 1664 }, 1665 1666SRST 1667``qom-set`` *path* *property* *value* 1668 Set QOM property *property* of object at location *path* to value *value* 1669ERST 1670 1671 { 1672 .name = "replay_break", 1673 .args_type = "icount:l", 1674 .params = "icount", 1675 .help = "set breakpoint at the specified instruction count", 1676 .cmd = hmp_replay_break, 1677 }, 1678 1679SRST 1680``replay_break`` *icount* 1681 Set replay breakpoint at instruction count *icount*. 1682 Execution stops when the specified instruction is reached. 1683 There can be at most one breakpoint. When breakpoint is set, any prior 1684 one is removed. The breakpoint may be set only in replay mode and only 1685 "in the future", i.e. at instruction counts greater than the current one. 1686 The current instruction count can be observed with ``info replay``. 1687ERST 1688 1689 { 1690 .name = "replay_delete_break", 1691 .args_type = "", 1692 .params = "", 1693 .help = "remove replay breakpoint", 1694 .cmd = hmp_replay_delete_break, 1695 }, 1696 1697SRST 1698``replay_delete_break`` 1699 Remove replay breakpoint which was previously set with ``replay_break``. 1700 The command is ignored when there are no replay breakpoints. 1701ERST 1702 1703 { 1704 .name = "replay_seek", 1705 .args_type = "icount:l", 1706 .params = "icount", 1707 .help = "replay execution to the specified instruction count", 1708 .cmd = hmp_replay_seek, 1709 }, 1710 1711SRST 1712``replay_seek`` *icount* 1713 Automatically proceed to the instruction count *icount*, when 1714 replaying the execution. The command automatically loads nearest 1715 snapshot and replays the execution to find the desired instruction. 1716 When there is no preceding snapshot or the execution is not replayed, 1717 then the command fails. 1718 *icount* for the reference may be observed with ``info replay`` command. 1719ERST 1720 1721 { 1722 .name = "info", 1723 .args_type = "item:s?", 1724 .params = "[subcommand]", 1725 .help = "show various information about the system state", 1726 .cmd = hmp_info_help, 1727 .sub_table = hmp_info_cmds, 1728 .flags = "p", 1729 }, 1730 1731SRST 1732``calc_dirty_rate`` *second* 1733 Start a round of dirty rate measurement with the period specified in *second*. 1734 The result of the dirty rate measurement may be observed with ``info 1735 dirty_rate`` command. 1736ERST 1737 1738 { 1739 .name = "calc_dirty_rate", 1740 .args_type = "second:l,sample_pages_per_GB:l?", 1741 .params = "second [sample_pages_per_GB]", 1742 .help = "start a round of guest dirty rate measurement", 1743 .cmd = hmp_calc_dirty_rate, 1744 },