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1 HXCOMM See docs/devel/docs.rst for the format of this file.
2 HXCOMM
3 HXCOMM This file defines the contents of an array of HMPCommand structs
4 HXCOMM which specify the name, behaviour and help text for HMP commands.
5 HXCOMM Text between SRST and ERST is rST format documentation.
6 HXCOMM HXCOMM can be used for comments, discarded from both rST and C.
7
8
9 {
10 .name = "help|?",
11 .args_type = "name:S?",
12 .params = "[cmd]",
13 .help = "show the help",
14 .cmd = hmp_help,
15 .flags = "p",
16 },
17
18 SRST
19 ``help`` or ``?`` [*cmd*]
20 Show the help for all commands or just for command *cmd*.
21 ERST
22
23 {
24 .name = "commit",
25 .args_type = "device:B",
26 .params = "device|all",
27 .help = "commit changes to the disk images (if -snapshot is used) or backing files",
28 .cmd = hmp_commit,
29 },
30
31 SRST
32 ``commit``
33 Commit changes to the disk images (if -snapshot is used) or backing files.
34 If the backing file is smaller than the snapshot, then the backing file
35 will be resized to be the same size as the snapshot. If the snapshot is
36 smaller than the backing file, the backing file will not be truncated.
37 If you want the backing file to match the size of the smaller snapshot,
38 you can safely truncate it yourself once the commit operation successfully
39 completes.
40 ERST
41
42 {
43 .name = "quit|q",
44 .args_type = "",
45 .params = "",
46 .help = "quit the emulator",
47 .cmd = hmp_quit,
48 .flags = "p",
49 },
50
51 SRST
52 ``quit`` or ``q``
53 Quit the emulator.
54 ERST
55
56 {
57 .name = "exit_preconfig",
58 .args_type = "",
59 .params = "",
60 .help = "exit the preconfig state",
61 .cmd = hmp_exit_preconfig,
62 .flags = "p",
63 },
64
65 SRST
66 ``exit_preconfig``
67 This command makes QEMU exit the preconfig state and proceed with
68 VM initialization using configuration data provided on the command line
69 and via the QMP monitor during the preconfig state. The command is only
70 available during the preconfig state (i.e. when the --preconfig command
71 line option was in use).
72 ERST
73
74 {
75 .name = "block_resize",
76 .args_type = "device:B,size:o",
77 .params = "device size",
78 .help = "resize a block image",
79 .cmd = hmp_block_resize,
80 .coroutine = true,
81 .flags = "p",
82 },
83
84 SRST
85 ``block_resize``
86 Resize a block image while a guest is running. Usually requires guest
87 action to see the updated size. Resize to a lower size is supported,
88 but should be used with extreme caution. Note that this command only
89 resizes image files, it can not resize block devices like LVM volumes.
90 ERST
91
92 {
93 .name = "block_stream",
94 .args_type = "device:B,speed:o?,base:s?",
95 .params = "device [speed [base]]",
96 .help = "copy data from a backing file into a block device",
97 .cmd = hmp_block_stream,
98 .flags = "p",
99 },
100
101 SRST
102 ``block_stream``
103 Copy data from a backing file into a block device.
104 ERST
105
106 {
107 .name = "block_job_set_speed",
108 .args_type = "device:B,speed:o",
109 .params = "device speed",
110 .help = "set maximum speed for a background block operation",
111 .cmd = hmp_block_job_set_speed,
112 .flags = "p",
113 },
114
115 SRST
116 ``block_job_set_speed``
117 Set maximum speed for a background block operation.
118 ERST
119
120 {
121 .name = "block_job_cancel",
122 .args_type = "force:-f,device:B",
123 .params = "[-f] device",
124 .help = "stop an active background block operation (use -f"
125 "\n\t\t\t if you want to abort the operation immediately"
126 "\n\t\t\t instead of keep running until data is in sync)",
127 .cmd = hmp_block_job_cancel,
128 .flags = "p",
129 },
130
131 SRST
132 ``block_job_cancel``
133 Stop an active background block operation (streaming, mirroring).
134 ERST
135
136 {
137 .name = "block_job_complete",
138 .args_type = "device:B",
139 .params = "device",
140 .help = "stop an active background block operation",
141 .cmd = hmp_block_job_complete,
142 .flags = "p",
143 },
144
145 SRST
146 ``block_job_complete``
147 Manually trigger completion of an active background block operation.
148 For mirroring, this will switch the device to the destination path.
149 ERST
150
151 {
152 .name = "block_job_pause",
153 .args_type = "device:B",
154 .params = "device",
155 .help = "pause an active background block operation",
156 .cmd = hmp_block_job_pause,
157 .flags = "p",
158 },
159
160 SRST
161 ``block_job_pause``
162 Pause an active block streaming operation.
163 ERST
164
165 {
166 .name = "block_job_resume",
167 .args_type = "device:B",
168 .params = "device",
169 .help = "resume a paused background block operation",
170 .cmd = hmp_block_job_resume,
171 .flags = "p",
172 },
173
174 SRST
175 ``block_job_resume``
176 Resume a paused block streaming operation.
177 ERST
178
179 {
180 .name = "eject",
181 .args_type = "force:-f,device:B",
182 .params = "[-f] device",
183 .help = "eject a removable medium (use -f to force it)",
184 .cmd = hmp_eject,
185 },
186
187 SRST
188 ``eject [-f]`` *device*
189 Eject a removable medium (use -f to force it).
190 ERST
191
192 {
193 .name = "drive_del",
194 .args_type = "id:B",
195 .params = "device",
196 .help = "remove host block device",
197 .cmd = hmp_drive_del,
198 },
199
200 SRST
201 ``drive_del`` *device*
202 Remove host block device. The result is that guest generated IO is no longer
203 submitted against the host device underlying the disk. Once a drive has
204 been deleted, the QEMU Block layer returns -EIO which results in IO
205 errors in the guest for applications that are reading/writing to the device.
206 These errors are always reported to the guest, regardless of the drive's error
207 actions (drive options rerror, werror).
208 ERST
209
210 {
211 .name = "change",
212 .args_type = "device:B,force:-f,target:F,arg:s?,read-only-mode:s?",
213 .params = "device [-f] filename [format [read-only-mode]]",
214 .help = "change a removable medium, optional format, use -f to force the operation",
215 .cmd = hmp_change,
216 },
217
218 SRST
219 ``change`` *device* *setting*
220 Change the configuration of a device.
221
222 ``change`` *diskdevice* [-f] *filename* [*format* [*read-only-mode*]]
223 Change the medium for a removable disk device to point to *filename*. eg::
224
225 (qemu) change ide1-cd0 /path/to/some.iso
226
227 ``-f``
228 forces the operation even if the guest has locked the tray.
229
230 *format* is optional.
231
232 *read-only-mode* may be used to change the read-only status of the device.
233 It accepts the following values:
234
235 retain
236 Retains the current status; this is the default.
237
238 read-only
239 Makes the device read-only.
240
241 read-write
242 Makes the device writable.
243
244 ``change vnc password`` [*password*]
245
246 Change the password associated with the VNC server. If the new password
247 is not supplied, the monitor will prompt for it to be entered. VNC
248 passwords are only significant up to 8 letters. eg::
249
250 (qemu) change vnc password
251 Password: ********
252
253 ERST
254
255 #ifdef CONFIG_PIXMAN
256 {
257 .name = "screendump",
258 .args_type = "filename:F,format:-fs,device:s?,head:i?",
259 .params = "filename [-f format] [device [head]]",
260 .help = "save screen from head 'head' of display device 'device'"
261 "in specified format 'format' as image 'filename'."
262 "Currently only 'png' and 'ppm' formats are supported.",
263 .cmd = hmp_screendump,
264 .coroutine = true,
265 },
266
267 SRST
268 ``screendump`` *filename*
269 Save screen into PPM image *filename*.
270 ERST
271 #endif
272
273 {
274 .name = "logfile",
275 .args_type = "filename:F",
276 .params = "filename",
277 .help = "output logs to 'filename'",
278 .cmd = hmp_logfile,
279 },
280
281 SRST
282 ``logfile`` *filename*
283 Output logs to *filename*.
284 ERST
285
286 {
287 .name = "trace-event",
288 .args_type = "name:s,option:b,vcpu:i?",
289 .params = "name on|off [vcpu]",
290 .help = "changes status of a specific trace event "
291 "(vcpu: vCPU to set, default is all)",
292 .cmd = hmp_trace_event,
293 .command_completion = trace_event_completion,
294 },
295
296 SRST
297 ``trace-event``
298 changes status of a trace event
299 ERST
300
301 #if defined(CONFIG_TRACE_SIMPLE)
302 {
303 .name = "trace-file",
304 .args_type = "op:s?,arg:F?",
305 .params = "on|off|flush|set [arg]",
306 .help = "open, close, or flush trace file, or set a new file name",
307 .cmd = hmp_trace_file,
308 },
309
310 SRST
311 ``trace-file on|off|flush``
312 Open, close, or flush the trace file. If no argument is given, the
313 status of the trace file is displayed.
314 ERST
315 #endif
316
317 {
318 .name = "log",
319 .args_type = "items:s",
320 .params = "item1[,...]",
321 .help = "activate logging of the specified items",
322 .cmd = hmp_log,
323 },
324
325 SRST
326 ``log`` *item1*\ [,...]
327 Activate logging of the specified items.
328 ERST
329
330 {
331 .name = "savevm",
332 .args_type = "name:s?",
333 .params = "tag",
334 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created",
335 .cmd = hmp_savevm,
336 },
337
338 SRST
339 ``savevm`` *tag*
340 Create a snapshot of the whole virtual machine. If *tag* is
341 provided, it is used as human readable identifier. If there is already
342 a snapshot with the same tag, it is replaced. More info at
343 :ref:`vm_005fsnapshots`.
344
345 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
346 only *tag* as parameter.
347 ERST
348
349 {
350 .name = "loadvm",
351 .args_type = "name:s",
352 .params = "tag",
353 .help = "restore a VM snapshot from its tag",
354 .cmd = hmp_loadvm,
355 .command_completion = loadvm_completion,
356 },
357
358 SRST
359 ``loadvm`` *tag*
360 Set the whole virtual machine to the snapshot identified by the tag
361 *tag*.
362
363 Since 4.0, loadvm stopped accepting snapshot id as parameter.
364 ERST
365
366 {
367 .name = "delvm",
368 .args_type = "name:s",
369 .params = "tag",
370 .help = "delete a VM snapshot from its tag",
371 .cmd = hmp_delvm,
372 .command_completion = delvm_completion,
373 },
374
375 SRST
376 ``delvm`` *tag*
377 Delete the snapshot identified by *tag*.
378
379 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
380 only *tag* as parameter.
381 ERST
382
383 {
384 .name = "one-insn-per-tb",
385 .args_type = "option:s?",
386 .params = "[on|off]",
387 .help = "run emulation with one guest instruction per translation block",
388 .cmd = hmp_one_insn_per_tb,
389 },
390
391 SRST
392 ``one-insn-per-tb [off]``
393 Run the emulation with one guest instruction per translation block.
394 This slows down emulation a lot, but can be useful in some situations,
395 such as when trying to analyse the logs produced by the ``-d`` option.
396 This only has an effect when using TCG, not with KVM or other accelerators.
397
398 If called with option off, the emulation returns to normal mode.
399 ERST
400
401 {
402 .name = "stop|s",
403 .args_type = "",
404 .params = "",
405 .help = "stop emulation",
406 .cmd = hmp_stop,
407 },
408
409 SRST
410 ``stop`` or ``s``
411 Stop emulation.
412 ERST
413
414 {
415 .name = "cont|c",
416 .args_type = "",
417 .params = "",
418 .help = "resume emulation",
419 .cmd = hmp_cont,
420 },
421
422 SRST
423 ``cont`` or ``c``
424 Resume emulation.
425 ERST
426
427 {
428 .name = "system_wakeup",
429 .args_type = "",
430 .params = "",
431 .help = "wakeup guest from suspend",
432 .cmd = hmp_system_wakeup,
433 },
434
435 SRST
436 ``system_wakeup``
437 Wakeup guest from suspend.
438 ERST
439
440 {
441 .name = "gdbserver",
442 .args_type = "device:s?",
443 .params = "[device]",
444 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
445 .cmd = hmp_gdbserver,
446 },
447
448 SRST
449 ``gdbserver`` [*port*]
450 Start gdbserver session (default *port*\=1234)
451 ERST
452
453 {
454 .name = "x",
455 .args_type = "fmt:/,addr:l",
456 .params = "/fmt addr",
457 .help = "virtual memory dump starting at 'addr'",
458 .cmd = hmp_memory_dump,
459 },
460
461 SRST
462 ``x/``\ *fmt* *addr*
463 Virtual memory dump starting at *addr*.
464 ERST
465
466 {
467 .name = "xp",
468 .args_type = "fmt:/,addr:l",
469 .params = "/fmt addr",
470 .help = "physical memory dump starting at 'addr'",
471 .cmd = hmp_physical_memory_dump,
472 },
473
474 SRST
475 ``xp /``\ *fmt* *addr*
476 Physical memory dump starting at *addr*.
477
478 *fmt* is a format which tells the command how to format the
479 data. Its syntax is: ``/{count}{format}{size}``
480
481 *count*
482 is the number of items to be dumped.
483 *format*
484 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
485 c (char) or i (asm instruction).
486 *size*
487 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
488 ``h`` or ``w`` can be specified with the ``i`` format to
489 respectively select 16 or 32 bit code instruction size.
490
491 Examples:
492
493 Dump 10 instructions at the current instruction pointer::
494
495 (qemu) x/10i $eip
496 0x90107063: ret
497 0x90107064: sti
498 0x90107065: lea 0x0(%esi,1),%esi
499 0x90107069: lea 0x0(%edi,1),%edi
500 0x90107070: ret
501 0x90107071: jmp 0x90107080
502 0x90107073: nop
503 0x90107074: nop
504 0x90107075: nop
505 0x90107076: nop
506
507 Dump 80 16 bit values at the start of the video memory::
508
509 (qemu) xp/80hx 0xb8000
510 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
511 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
512 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
513 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
514 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
515 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
516 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
517 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
518 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
519 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
520
521 ERST
522
523 {
524 .name = "gpa2hva",
525 .args_type = "addr:l",
526 .params = "addr",
527 .help = "print the host virtual address corresponding to a guest physical address",
528 .cmd = hmp_gpa2hva,
529 },
530
531 SRST
532 ``gpa2hva`` *addr*
533 Print the host virtual address at which the guest's physical address *addr*
534 is mapped.
535 ERST
536
537 #ifdef CONFIG_LINUX
538 {
539 .name = "gpa2hpa",
540 .args_type = "addr:l",
541 .params = "addr",
542 .help = "print the host physical address corresponding to a guest physical address",
543 .cmd = hmp_gpa2hpa,
544 },
545 #endif
546
547 SRST
548 ``gpa2hpa`` *addr*
549 Print the host physical address at which the guest's physical address *addr*
550 is mapped.
551 ERST
552
553 {
554 .name = "gva2gpa",
555 .args_type = "addr:l",
556 .params = "addr",
557 .help = "print the guest physical address corresponding to a guest virtual address",
558 .cmd = hmp_gva2gpa,
559 },
560
561 SRST
562 ``gva2gpa`` *addr*
563 Print the guest physical address at which the guest's virtual address *addr*
564 is mapped based on the mapping for the current CPU.
565 ERST
566
567 {
568 .name = "print|p",
569 .args_type = "fmt:/,val:l",
570 .params = "/fmt expr",
571 .help = "print expression value (use $reg for CPU register access)",
572 .cmd = hmp_print,
573 },
574
575 SRST
576 ``print`` or ``p/``\ *fmt* *expr*
577 Print expression value. Only the *format* part of *fmt* is
578 used.
579 ERST
580
581 {
582 .name = "i",
583 .args_type = "fmt:/,addr:i,index:i.",
584 .params = "/fmt addr",
585 .help = "I/O port read",
586 .cmd = hmp_ioport_read,
587 },
588
589 SRST
590 ``i/``\ *fmt* *addr* [.\ *index*\ ]
591 Read I/O port.
592 ERST
593
594 {
595 .name = "o",
596 .args_type = "fmt:/,addr:i,val:i",
597 .params = "/fmt addr value",
598 .help = "I/O port write",
599 .cmd = hmp_ioport_write,
600 },
601
602 SRST
603 ``o/``\ *fmt* *addr* *val*
604 Write to I/O port.
605 ERST
606
607 {
608 .name = "sendkey",
609 .args_type = "keys:s,hold-time:i?",
610 .params = "keys [hold_ms]",
611 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
612 .cmd = hmp_sendkey,
613 .command_completion = sendkey_completion,
614 },
615
616 SRST
617 ``sendkey`` *keys*
618 Send *keys* to the guest. *keys* could be the name of the
619 key or the raw value in hexadecimal format. Use ``-`` to press
620 several keys simultaneously. Example::
621
622 sendkey ctrl-alt-f1
623
624 This command is useful to send keys that your graphical user interface
625 intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
626 ERST
627 {
628 .name = "sync-profile",
629 .args_type = "op:s?",
630 .params = "[on|off|reset]",
631 .help = "enable, disable or reset synchronization profiling. "
632 "With no arguments, prints whether profiling is on or off.",
633 .cmd = hmp_sync_profile,
634 },
635
636 SRST
637 ``sync-profile [on|off|reset]``
638 Enable, disable or reset synchronization profiling. With no arguments, prints
639 whether profiling is on or off.
640 ERST
641
642 {
643 .name = "system_reset",
644 .args_type = "",
645 .params = "",
646 .help = "reset the system",
647 .cmd = hmp_system_reset,
648 },
649
650 SRST
651 ``system_reset``
652 Reset the system.
653 ERST
654
655 {
656 .name = "system_powerdown",
657 .args_type = "",
658 .params = "",
659 .help = "send system power down event",
660 .cmd = hmp_system_powerdown,
661 },
662
663 SRST
664 ``system_powerdown``
665 Power down the system (if supported).
666 ERST
667
668 {
669 .name = "sum",
670 .args_type = "start:i,size:i",
671 .params = "addr size",
672 .help = "compute the checksum of a memory region",
673 .cmd = hmp_sum,
674 },
675
676 SRST
677 ``sum`` *addr* *size*
678 Compute the checksum of a memory region.
679 ERST
680
681 {
682 .name = "device_add",
683 .args_type = "device:O",
684 .params = "driver[,prop=value][,...]",
685 .help = "add device, like -device on the command line",
686 .cmd = hmp_device_add,
687 .command_completion = device_add_completion,
688 },
689
690 SRST
691 ``device_add`` *config*
692 Add device.
693 ERST
694
695 {
696 .name = "device_del",
697 .args_type = "id:s",
698 .params = "device",
699 .help = "remove device",
700 .cmd = hmp_device_del,
701 .command_completion = device_del_completion,
702 },
703
704 SRST
705 ``device_del`` *id*
706 Remove device *id*. *id* may be a short ID
707 or a QOM object path.
708 ERST
709
710 {
711 .name = "cpu",
712 .args_type = "index:i",
713 .params = "index",
714 .help = "set the default CPU",
715 .cmd = hmp_cpu,
716 },
717
718 SRST
719 ``cpu`` *index*
720 Set the default CPU.
721 ERST
722
723 {
724 .name = "mouse_move",
725 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
726 .params = "dx dy [dz]",
727 .help = "send mouse move events",
728 .cmd = hmp_mouse_move,
729 },
730
731 SRST
732 ``mouse_move`` *dx* *dy* [*dz*]
733 Move the active mouse to the specified coordinates *dx* *dy*
734 with optional scroll axis *dz*.
735 ERST
736
737 {
738 .name = "mouse_button",
739 .args_type = "button_state:i",
740 .params = "state",
741 .help = "change mouse button state (1=L, 2=M, 4=R)",
742 .cmd = hmp_mouse_button,
743 },
744
745 SRST
746 ``mouse_button`` *val*
747 Change the active mouse button state *val* (1=L, 2=M, 4=R).
748 ERST
749
750 {
751 .name = "mouse_set",
752 .args_type = "index:i",
753 .params = "index",
754 .help = "set which mouse device receives events",
755 .cmd = hmp_mouse_set,
756 },
757
758 SRST
759 ``mouse_set`` *index*
760 Set which mouse device receives events at given *index*, index
761 can be obtained with::
762
763 info mice
764
765 ERST
766
767 {
768 .name = "wavcapture",
769 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
770 .params = "path audiodev [frequency [bits [channels]]]",
771 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
772 .cmd = hmp_wavcapture,
773 },
774 SRST
775 ``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
776 Capture audio into *filename* from *audiodev*, using sample rate
777 *frequency* bits per sample *bits* and number of channels
778 *channels*.
779
780 Defaults:
781
782 - Sample rate = 44100 Hz - CD quality
783 - Bits = 16
784 - Number of channels = 2 - Stereo
785 ERST
786
787 {
788 .name = "stopcapture",
789 .args_type = "n:i",
790 .params = "capture index",
791 .help = "stop capture",
792 .cmd = hmp_stopcapture,
793 },
794 SRST
795 ``stopcapture`` *index*
796 Stop capture with a given *index*, index can be obtained with::
797
798 info capture
799
800 ERST
801
802 {
803 .name = "memsave",
804 .args_type = "val:l,size:i,filename:s",
805 .params = "addr size file",
806 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
807 .cmd = hmp_memsave,
808 },
809
810 SRST
811 ``memsave`` *addr* *size* *file*
812 save to disk virtual memory dump starting at *addr* of size *size*.
813 ERST
814
815 {
816 .name = "pmemsave",
817 .args_type = "val:l,size:i,filename:s",
818 .params = "addr size file",
819 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
820 .cmd = hmp_pmemsave,
821 },
822
823 SRST
824 ``pmemsave`` *addr* *size* *file*
825 save to disk physical memory dump starting at *addr* of size *size*.
826 ERST
827
828 {
829 .name = "boot_set",
830 .args_type = "bootdevice:s",
831 .params = "bootdevice",
832 .help = "define new values for the boot device list",
833 .cmd = hmp_boot_set,
834 },
835
836 SRST
837 ``boot_set`` *bootdevicelist*
838 Define new values for the boot device list. Those values will override
839 the values specified on the command line through the ``-boot`` option.
840
841 The values that can be specified here depend on the machine type, but are
842 the same that can be specified in the ``-boot`` command line option.
843 ERST
844
845 {
846 .name = "nmi",
847 .args_type = "",
848 .params = "",
849 .help = "inject an NMI",
850 .cmd = hmp_nmi,
851 },
852 SRST
853 ``nmi`` *cpu*
854 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
855 ERST
856
857 {
858 .name = "ringbuf_write",
859 .args_type = "device:s,data:s",
860 .params = "device data",
861 .help = "Write to a ring buffer character device",
862 .cmd = hmp_ringbuf_write,
863 .command_completion = ringbuf_write_completion,
864 },
865
866 SRST
867 ``ringbuf_write`` *device* *data*
868 Write *data* to ring buffer character device *device*.
869 *data* must be a UTF-8 string.
870 ERST
871
872 {
873 .name = "ringbuf_read",
874 .args_type = "device:s,size:i",
875 .params = "device size",
876 .help = "Read from a ring buffer character device",
877 .cmd = hmp_ringbuf_read,
878 .command_completion = ringbuf_write_completion,
879 },
880
881 SRST
882 ``ringbuf_read`` *device*
883 Read and print up to *size* bytes from ring buffer character
884 device *device*.
885 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
886 character code in hexadecimal. Character ``\`` is printed ``\\``.
887 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
888 NUL characters, after the ring buffer lost data, and when reading
889 stops because the size limit is reached.
890 ERST
891
892 {
893 .name = "announce_self",
894 .args_type = "interfaces:s?,id:s?",
895 .params = "[interfaces] [id]",
896 .help = "Trigger GARP/RARP announcements",
897 .cmd = hmp_announce_self,
898 },
899
900 SRST
901 ``announce_self``
902 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
903 updating the network infrastructure after a reconfiguration or some forms
904 of migration. The timings of the round are set by the migration announce
905 parameters. An optional comma separated *interfaces* list restricts the
906 announce to the named set of interfaces. An optional *id* can be used to
907 start a separate announce timer and to change the parameters of it later.
908 ERST
909
910 {
911 .name = "migrate",
912 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
913 .params = "[-d] [-b] [-i] [-r] uri",
914 .help = "migrate to URI (using -d to not wait for completion)"
915 "\n\t\t\t -b for migration without shared storage with"
916 " full copy of disk\n\t\t\t -i for migration without "
917 "shared storage with incremental copy of disk "
918 "(base image shared between src and destination)"
919 "\n\t\t\t -r to resume a paused migration",
920 .cmd = hmp_migrate,
921 },
922
923
924 SRST
925 ``migrate [-d] [-b] [-i]`` *uri*
926 Migrate to *uri* (using -d to not wait for completion).
927
928 ``-b``
929 for migration with full copy of disk
930 ``-i``
931 for migration with incremental copy of disk (base image is shared)
932 ERST
933
934 {
935 .name = "migrate_cancel",
936 .args_type = "",
937 .params = "",
938 .help = "cancel the current VM migration",
939 .cmd = hmp_migrate_cancel,
940 },
941
942 SRST
943 ``migrate_cancel``
944 Cancel the current VM migration.
945 ERST
946
947 {
948 .name = "migrate_continue",
949 .args_type = "state:s",
950 .params = "state",
951 .help = "Continue migration from the given paused state",
952 .cmd = hmp_migrate_continue,
953 },
954 SRST
955 ``migrate_continue`` *state*
956 Continue migration from the paused state *state*
957 ERST
958
959 {
960 .name = "migrate_incoming",
961 .args_type = "uri:s",
962 .params = "uri",
963 .help = "Continue an incoming migration from an -incoming defer",
964 .cmd = hmp_migrate_incoming,
965 },
966
967 SRST
968 ``migrate_incoming`` *uri*
969 Continue an incoming migration using the *uri* (that has the same syntax
970 as the ``-incoming`` option).
971 ERST
972
973 {
974 .name = "migrate_recover",
975 .args_type = "uri:s",
976 .params = "uri",
977 .help = "Continue a paused incoming postcopy migration",
978 .cmd = hmp_migrate_recover,
979 },
980
981 SRST
982 ``migrate_recover`` *uri*
983 Continue a paused incoming postcopy migration using the *uri*.
984 ERST
985
986 {
987 .name = "migrate_pause",
988 .args_type = "",
989 .params = "",
990 .help = "Pause an ongoing migration (postcopy-only)",
991 .cmd = hmp_migrate_pause,
992 },
993
994 SRST
995 ``migrate_pause``
996 Pause an ongoing migration. Currently it only supports postcopy.
997 ERST
998
999 {
1000 .name = "migrate_set_capability",
1001 .args_type = "capability:s,state:b",
1002 .params = "capability state",
1003 .help = "Enable/Disable the usage of a capability for migration",
1004 .cmd = hmp_migrate_set_capability,
1005 .command_completion = migrate_set_capability_completion,
1006 },
1007
1008 SRST
1009 ``migrate_set_capability`` *capability* *state*
1010 Enable/Disable the usage of a capability *capability* for migration.
1011 ERST
1012
1013 {
1014 .name = "migrate_set_parameter",
1015 .args_type = "parameter:s,value:s",
1016 .params = "parameter value",
1017 .help = "Set the parameter for migration",
1018 .cmd = hmp_migrate_set_parameter,
1019 .command_completion = migrate_set_parameter_completion,
1020 },
1021
1022 SRST
1023 ``migrate_set_parameter`` *parameter* *value*
1024 Set the parameter *parameter* for migration.
1025 ERST
1026
1027 {
1028 .name = "migrate_start_postcopy",
1029 .args_type = "",
1030 .params = "",
1031 .help = "Followup to a migration command to switch the migration"
1032 " to postcopy mode. The postcopy-ram capability must "
1033 "be set on both source and destination before the "
1034 "original migration command .",
1035 .cmd = hmp_migrate_start_postcopy,
1036 },
1037
1038 SRST
1039 ``migrate_start_postcopy``
1040 Switch in-progress migration to postcopy mode. Ignored after the end of
1041 migration (or once already in postcopy).
1042 ERST
1043
1044 #ifdef CONFIG_REPLICATION
1045 {
1046 .name = "x_colo_lost_heartbeat",
1047 .args_type = "",
1048 .params = "",
1049 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1050 "a failover or takeover is needed.",
1051 .cmd = hmp_x_colo_lost_heartbeat,
1052 },
1053 #endif
1054
1055 SRST
1056 ``x_colo_lost_heartbeat``
1057 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1058 ERST
1059
1060 {
1061 .name = "client_migrate_info",
1062 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1063 .params = "protocol hostname port tls-port cert-subject",
1064 .help = "set migration information for remote display",
1065 .cmd = hmp_client_migrate_info,
1066 },
1067
1068 SRST
1069 ``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1070 Set migration information for remote display. This makes the server
1071 ask the client to automatically reconnect using the new parameters
1072 once migration finished successfully. Only implemented for SPICE.
1073 ERST
1074
1075 {
1076 .name = "dump-guest-memory",
1077 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,raw:-R,filename:F,begin:l?,length:l?",
1078 .params = "[-p] [-d] [-z|-l|-s|-w] [-R] filename [begin length]",
1079 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1080 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1081 "-d: return immediately (do not wait for completion).\n\t\t\t"
1082 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1083 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1084 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1085 "-R: when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened\n\t\t\t"
1086 " format\n\t\t\t"
1087 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1088 " for Windows x86 and x64 guests with vmcoreinfo driver only.\n\t\t\t"
1089 "begin: the starting physical address.\n\t\t\t"
1090 "length: the memory size, in bytes.",
1091 .cmd = hmp_dump_guest_memory,
1092 },
1093
1094 SRST
1095 ``dump-guest-memory [-p]`` *filename* *begin* *length*
1096 \
1097 ``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1098 Dump guest memory to *protocol*. The file can be processed with crash or
1099 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1100
1101 ``-p``
1102 do paging to get guest's memory mapping.
1103 ``-z``
1104 dump in kdump-compressed format, with zlib compression.
1105 ``-l``
1106 dump in kdump-compressed format, with lzo compression.
1107 ``-s``
1108 dump in kdump-compressed format, with snappy compression.
1109 ``-R``
1110 when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened
1111 format
1112 ``-w``
1113 dump in Windows crashdump format (can be used instead of ELF-dump converting),
1114 for Windows x64 guests with vmcoreinfo driver only
1115 *filename*
1116 dump file name.
1117 *begin*
1118 the starting physical address. It's optional, and should be
1119 specified together with *length*.
1120 *length*
1121 the memory size, in bytes. It's optional, and should be specified
1122 together with *begin*.
1123
1124 ERST
1125
1126 #if defined(TARGET_S390X)
1127 {
1128 .name = "dump-skeys",
1129 .args_type = "filename:F",
1130 .params = "",
1131 .help = "Save guest storage keys into file 'filename'.\n",
1132 .cmd = hmp_dump_skeys,
1133 },
1134 #endif
1135
1136 SRST
1137 ``dump-skeys`` *filename*
1138 Save guest storage keys to a file.
1139 ERST
1140
1141 #if defined(TARGET_S390X)
1142 {
1143 .name = "migration_mode",
1144 .args_type = "mode:i",
1145 .params = "mode",
1146 .help = "Enables or disables migration mode\n",
1147 .cmd = hmp_migrationmode,
1148 },
1149 #endif
1150
1151 SRST
1152 ``migration_mode`` *mode*
1153 Enables or disables migration mode.
1154 ERST
1155
1156 {
1157 .name = "snapshot_blkdev",
1158 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1159 .params = "[-n] device [new-image-file] [format]",
1160 .help = "initiates a live snapshot\n\t\t\t"
1161 "of device. If a new image file is specified, the\n\t\t\t"
1162 "new image file will become the new root image.\n\t\t\t"
1163 "If format is specified, the snapshot file will\n\t\t\t"
1164 "be created in that format.\n\t\t\t"
1165 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1166 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1167 "recreating it from scratch.",
1168 .cmd = hmp_snapshot_blkdev,
1169 },
1170
1171 SRST
1172 ``snapshot_blkdev``
1173 Snapshot device, using snapshot file as target if provided
1174 ERST
1175
1176 {
1177 .name = "snapshot_blkdev_internal",
1178 .args_type = "device:B,name:s",
1179 .params = "device name",
1180 .help = "take an internal snapshot of device.\n\t\t\t"
1181 "The format of the image used by device must\n\t\t\t"
1182 "support it, such as qcow2.\n\t\t\t",
1183 .cmd = hmp_snapshot_blkdev_internal,
1184 },
1185
1186 SRST
1187 ``snapshot_blkdev_internal``
1188 Take an internal snapshot on device if it support
1189 ERST
1190
1191 {
1192 .name = "snapshot_delete_blkdev_internal",
1193 .args_type = "device:B,name:s,id:s?",
1194 .params = "device name [id]",
1195 .help = "delete an internal snapshot of device.\n\t\t\t"
1196 "If id is specified, qemu will try delete\n\t\t\t"
1197 "the snapshot matching both id and name.\n\t\t\t"
1198 "The format of the image used by device must\n\t\t\t"
1199 "support it, such as qcow2.\n\t\t\t",
1200 .cmd = hmp_snapshot_delete_blkdev_internal,
1201 },
1202
1203 SRST
1204 ``snapshot_delete_blkdev_internal``
1205 Delete an internal snapshot on device if it support
1206 ERST
1207
1208 {
1209 .name = "drive_mirror",
1210 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1211 .params = "[-n] [-f] device target [format]",
1212 .help = "initiates live storage\n\t\t\t"
1213 "migration for a device. The device's contents are\n\t\t\t"
1214 "copied to the new image file, including data that\n\t\t\t"
1215 "is written after the command is started.\n\t\t\t"
1216 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1217 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1218 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1219 "so that the result does not need a backing file.\n\t\t\t",
1220 .cmd = hmp_drive_mirror,
1221 },
1222 SRST
1223 ``drive_mirror``
1224 Start mirroring a block device's writes to a new destination,
1225 using the specified target.
1226 ERST
1227
1228 {
1229 .name = "drive_backup",
1230 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1231 .params = "[-n] [-f] [-c] device target [format]",
1232 .help = "initiates a point-in-time\n\t\t\t"
1233 "copy for a device. The device's contents are\n\t\t\t"
1234 "copied to the new image file, excluding data that\n\t\t\t"
1235 "is written after the command is started.\n\t\t\t"
1236 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1237 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1238 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1239 "so that the result does not need a backing file.\n\t\t\t"
1240 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1241 "(if the target format supports it).\n\t\t\t",
1242 .cmd = hmp_drive_backup,
1243 },
1244 SRST
1245 ``drive_backup``
1246 Start a point-in-time copy of a block device to a specified target.
1247 ERST
1248
1249 {
1250 .name = "drive_add",
1251 .args_type = "node:-n,pci_addr:s,opts:s",
1252 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1253 "[file=file][,if=type][,bus=n]\n"
1254 "[,unit=m][,media=d][,index=i]\n"
1255 "[,snapshot=on|off][,cache=on|off]\n"
1256 "[,readonly=on|off][,copy-on-read=on|off]",
1257 .help = "add drive to PCI storage controller",
1258 .cmd = hmp_drive_add,
1259 },
1260
1261 SRST
1262 ``drive_add``
1263 Add drive to PCI storage controller.
1264 ERST
1265
1266 {
1267 .name = "pcie_aer_inject_error",
1268 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1269 "id:s,error_status:s,"
1270 "header0:i?,header1:i?,header2:i?,header3:i?,"
1271 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1272 .params = "[-a] [-c] id "
1273 "<error_status> [<tlp header> [<tlp header prefix>]]",
1274 .help = "inject pcie aer error\n\t\t\t"
1275 " -a for advisory non fatal error\n\t\t\t"
1276 " -c for correctable error\n\t\t\t"
1277 "<id> = qdev device id\n\t\t\t"
1278 "<error_status> = error string or 32bit\n\t\t\t"
1279 "<tlp header> = 32bit x 4\n\t\t\t"
1280 "<tlp header prefix> = 32bit x 4",
1281 .cmd = hmp_pcie_aer_inject_error,
1282 },
1283
1284 SRST
1285 ``pcie_aer_inject_error``
1286 Inject PCIe AER error
1287 ERST
1288
1289 {
1290 .name = "netdev_add",
1291 .args_type = "netdev:O",
1292 .params = "[user|tap|socket|stream|dgram|vde|bridge|hubport|netmap|vhost-user"
1293 #ifdef CONFIG_AF_XDP
1294 "|af-xdp"
1295 #endif
1296 #ifdef CONFIG_VMNET
1297 "|vmnet-host|vmnet-shared|vmnet-bridged"
1298 #endif
1299 "],id=str[,prop=value][,...]",
1300 .help = "add host network device",
1301 .cmd = hmp_netdev_add,
1302 .command_completion = netdev_add_completion,
1303 .flags = "p",
1304 },
1305
1306 SRST
1307 ``netdev_add``
1308 Add host network device.
1309 ERST
1310
1311 {
1312 .name = "netdev_del",
1313 .args_type = "id:s",
1314 .params = "id",
1315 .help = "remove host network device",
1316 .cmd = hmp_netdev_del,
1317 .command_completion = netdev_del_completion,
1318 .flags = "p",
1319 },
1320
1321 SRST
1322 ``netdev_del``
1323 Remove host network device.
1324 ERST
1325
1326 {
1327 .name = "object_add",
1328 .args_type = "object:S",
1329 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1330 .help = "create QOM object",
1331 .cmd = hmp_object_add,
1332 .command_completion = object_add_completion,
1333 .flags = "p",
1334 },
1335
1336 SRST
1337 ``object_add``
1338 Create QOM object.
1339 ERST
1340
1341 {
1342 .name = "object_del",
1343 .args_type = "id:s",
1344 .params = "id",
1345 .help = "destroy QOM object",
1346 .cmd = hmp_object_del,
1347 .command_completion = object_del_completion,
1348 .flags = "p",
1349 },
1350
1351 SRST
1352 ``object_del``
1353 Destroy QOM object.
1354 ERST
1355
1356 #ifdef CONFIG_SLIRP
1357 {
1358 .name = "hostfwd_add",
1359 .args_type = "arg1:s,arg2:s?",
1360 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1361 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1362 .cmd = hmp_hostfwd_add,
1363 },
1364 #endif
1365 SRST
1366 ``hostfwd_add``
1367 Redirect TCP or UDP connections from host to guest (requires -net user).
1368 ERST
1369
1370 #ifdef CONFIG_SLIRP
1371 {
1372 .name = "hostfwd_remove",
1373 .args_type = "arg1:s,arg2:s?",
1374 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1375 .help = "remove host-to-guest TCP or UDP redirection",
1376 .cmd = hmp_hostfwd_remove,
1377 },
1378
1379 #endif
1380 SRST
1381 ``hostfwd_remove``
1382 Remove host-to-guest TCP or UDP redirection.
1383 ERST
1384
1385 {
1386 .name = "balloon",
1387 .args_type = "value:M",
1388 .params = "target",
1389 .help = "request VM to change its memory allocation (in MB)",
1390 .cmd = hmp_balloon,
1391 },
1392
1393 SRST
1394 ``balloon`` *value*
1395 Request VM to change its memory allocation to *value* (in MB).
1396 ERST
1397
1398 {
1399 .name = "set_link",
1400 .args_type = "name:s,up:b",
1401 .params = "name on|off",
1402 .help = "change the link status of a network adapter",
1403 .cmd = hmp_set_link,
1404 .command_completion = set_link_completion,
1405 },
1406
1407 SRST
1408 ``set_link`` *name* ``[on|off]``
1409 Switch link *name* on (i.e. up) or off (i.e. down).
1410 ERST
1411
1412 {
1413 .name = "watchdog_action",
1414 .args_type = "action:s",
1415 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1416 .help = "change watchdog action",
1417 .cmd = hmp_watchdog_action,
1418 .command_completion = watchdog_action_completion,
1419 },
1420
1421 SRST
1422 ``watchdog_action``
1423 Change watchdog action.
1424 ERST
1425
1426 {
1427 .name = "nbd_server_start",
1428 .args_type = "all:-a,writable:-w,uri:s",
1429 .params = "nbd_server_start [-a] [-w] host:port",
1430 .help = "serve block devices on the given host and port",
1431 .cmd = hmp_nbd_server_start,
1432 .flags = "p",
1433 },
1434 SRST
1435 ``nbd_server_start`` *host*:*port*
1436 Start an NBD server on the given host and/or port. If the ``-a``
1437 option is included, all of the virtual machine's block devices that
1438 have an inserted media on them are automatically exported; in this case,
1439 the ``-w`` option makes the devices writable too.
1440 ERST
1441
1442 {
1443 .name = "nbd_server_add",
1444 .args_type = "writable:-w,device:B,name:s?",
1445 .params = "nbd_server_add [-w] device [name]",
1446 .help = "export a block device via NBD",
1447 .cmd = hmp_nbd_server_add,
1448 .flags = "p",
1449 },
1450 SRST
1451 ``nbd_server_add`` *device* [ *name* ]
1452 Export a block device through QEMU's NBD server, which must be started
1453 beforehand with ``nbd_server_start``. The ``-w`` option makes the
1454 exported device writable too. The export name is controlled by *name*,
1455 defaulting to *device*.
1456 ERST
1457
1458 {
1459 .name = "nbd_server_remove",
1460 .args_type = "force:-f,name:s",
1461 .params = "nbd_server_remove [-f] name",
1462 .help = "remove an export previously exposed via NBD",
1463 .cmd = hmp_nbd_server_remove,
1464 .flags = "p",
1465 },
1466 SRST
1467 ``nbd_server_remove [-f]`` *name*
1468 Stop exporting a block device through QEMU's NBD server, which was
1469 previously started with ``nbd_server_add``. The ``-f``
1470 option forces the server to drop the export immediately even if
1471 clients are connected; otherwise the command fails unless there are no
1472 clients.
1473 ERST
1474
1475 {
1476 .name = "nbd_server_stop",
1477 .args_type = "",
1478 .params = "nbd_server_stop",
1479 .help = "stop serving block devices using the NBD protocol",
1480 .cmd = hmp_nbd_server_stop,
1481 .flags = "p",
1482 },
1483 SRST
1484 ``nbd_server_stop``
1485 Stop the QEMU embedded NBD server.
1486 ERST
1487
1488
1489 #if defined(TARGET_I386)
1490
1491 {
1492 .name = "mce",
1493 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1494 .params = "[-b] cpu bank status mcgstatus addr misc",
1495 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1496 .cmd = hmp_mce,
1497 },
1498
1499 #endif
1500 SRST
1501 ``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1502 Inject an MCE on the given CPU (x86 only).
1503 ERST
1504
1505 #ifdef CONFIG_POSIX
1506 {
1507 .name = "getfd",
1508 .args_type = "fdname:s",
1509 .params = "getfd name",
1510 .help = "receive a file descriptor via SCM rights and assign it a name",
1511 .cmd = hmp_getfd,
1512 .flags = "p",
1513 },
1514
1515 SRST
1516 ``getfd`` *fdname*
1517 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1518 mechanism on unix sockets, it is stored using the name *fdname* for
1519 later use by other monitor commands.
1520 ERST
1521 #endif
1522
1523 {
1524 .name = "closefd",
1525 .args_type = "fdname:s",
1526 .params = "closefd name",
1527 .help = "close a file descriptor previously passed via SCM rights",
1528 .cmd = hmp_closefd,
1529 .flags = "p",
1530 },
1531
1532 SRST
1533 ``closefd`` *fdname*
1534 Close the file descriptor previously assigned to *fdname* using the
1535 ``getfd`` command. This is only needed if the file descriptor was never
1536 used by another monitor command.
1537 ERST
1538
1539 {
1540 .name = "block_set_io_throttle",
1541 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1542 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1543 .help = "change I/O throttle limits for a block drive",
1544 .cmd = hmp_block_set_io_throttle,
1545 .flags = "p",
1546 },
1547
1548 SRST
1549 ``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1550 Change I/O throttle limits for a block drive to
1551 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1552 *device* can be a block device name, a qdev ID or a QOM path.
1553 ERST
1554
1555 {
1556 .name = "set_password",
1557 .args_type = "protocol:s,password:s,display:-ds,connected:s?",
1558 .params = "protocol password [-d display] [action-if-connected]",
1559 .help = "set spice/vnc password",
1560 .cmd = hmp_set_password,
1561 },
1562
1563 SRST
1564 ``set_password [ vnc | spice ] password [ -d display ] [ action-if-connected ]``
1565 Change spice/vnc password. *display* can be used with 'vnc' to specify
1566 which display to set the password on. *action-if-connected* specifies
1567 what should happen in case a connection is established: *fail* makes
1568 the password change fail. *disconnect* changes the password and
1569 disconnects the client. *keep* changes the password and keeps the
1570 connection up. *keep* is the default.
1571 ERST
1572
1573 {
1574 .name = "expire_password",
1575 .args_type = "protocol:s,time:s,display:-ds",
1576 .params = "protocol time [-d display]",
1577 .help = "set spice/vnc password expire-time",
1578 .cmd = hmp_expire_password,
1579 },
1580
1581 SRST
1582 ``expire_password [ vnc | spice ] expire-time [ -d display ]``
1583 Specify when a password for spice/vnc becomes invalid.
1584 *display* behaves the same as in ``set_password``.
1585 *expire-time* accepts:
1586
1587 ``now``
1588 Invalidate password instantly.
1589 ``never``
1590 Password stays valid forever.
1591 ``+``\ *nsec*
1592 Password stays valid for *nsec* seconds starting now.
1593 *nsec*
1594 Password is invalidated at the given time. *nsec* are the seconds
1595 passed since 1970, i.e. unix epoch.
1596
1597 ERST
1598
1599 {
1600 .name = "chardev-add",
1601 .args_type = "args:s",
1602 .params = "args",
1603 .help = "add chardev",
1604 .cmd = hmp_chardev_add,
1605 .command_completion = chardev_add_completion,
1606 },
1607
1608 SRST
1609 ``chardev-add`` *args*
1610 chardev-add accepts the same parameters as the -chardev command line switch.
1611 ERST
1612
1613 {
1614 .name = "chardev-change",
1615 .args_type = "id:s,args:s",
1616 .params = "id args",
1617 .help = "change chardev",
1618 .cmd = hmp_chardev_change,
1619 },
1620
1621 SRST
1622 ``chardev-change`` *args*
1623 chardev-change accepts existing chardev *id* and then the same arguments
1624 as the -chardev command line switch (except for "id").
1625 ERST
1626
1627 {
1628 .name = "chardev-remove",
1629 .args_type = "id:s",
1630 .params = "id",
1631 .help = "remove chardev",
1632 .cmd = hmp_chardev_remove,
1633 .command_completion = chardev_remove_completion,
1634 },
1635
1636 SRST
1637 ``chardev-remove`` *id*
1638 Removes the chardev *id*.
1639 ERST
1640
1641 {
1642 .name = "chardev-send-break",
1643 .args_type = "id:s",
1644 .params = "id",
1645 .help = "send a break on chardev",
1646 .cmd = hmp_chardev_send_break,
1647 .command_completion = chardev_remove_completion,
1648 },
1649
1650 SRST
1651 ``chardev-send-break`` *id*
1652 Send a break on the chardev *id*.
1653 ERST
1654
1655 {
1656 .name = "qemu-io",
1657 .args_type = "qdev:-d,device:B,command:s",
1658 .params = "[-d] [device] \"[command]\"",
1659 .help = "run a qemu-io command on a block device\n\t\t\t"
1660 "-d: [device] is a device ID rather than a "
1661 "drive ID or node name",
1662 .cmd = hmp_qemu_io,
1663 },
1664
1665 SRST
1666 ``qemu-io`` *device* *command*
1667 Executes a qemu-io command on the given block device.
1668 ERST
1669
1670 {
1671 .name = "qom-list",
1672 .args_type = "path:s?",
1673 .params = "path",
1674 .help = "list QOM properties",
1675 .cmd = hmp_qom_list,
1676 .flags = "p",
1677 },
1678
1679 SRST
1680 ``qom-list`` [*path*]
1681 Print QOM properties of object at location *path*
1682 ERST
1683
1684 {
1685 .name = "qom-get",
1686 .args_type = "path:s,property:s",
1687 .params = "path property",
1688 .help = "print QOM property",
1689 .cmd = hmp_qom_get,
1690 .flags = "p",
1691 },
1692
1693 SRST
1694 ``qom-get`` *path* *property*
1695 Print QOM property *property* of object at location *path*
1696 ERST
1697
1698 {
1699 .name = "qom-set",
1700 .args_type = "json:-j,path:s,property:s,value:S",
1701 .params = "[-j] path property value",
1702 .help = "set QOM property.\n\t\t\t"
1703 "-j: the value is specified in json format.",
1704 .cmd = hmp_qom_set,
1705 .flags = "p",
1706 },
1707
1708 SRST
1709 ``qom-set`` *path* *property* *value*
1710 Set QOM property *property* of object at location *path* to value *value*
1711 ERST
1712
1713 {
1714 .name = "replay_break",
1715 .args_type = "icount:l",
1716 .params = "icount",
1717 .help = "set breakpoint at the specified instruction count",
1718 .cmd = hmp_replay_break,
1719 },
1720
1721 SRST
1722 ``replay_break`` *icount*
1723 Set replay breakpoint at instruction count *icount*.
1724 Execution stops when the specified instruction is reached.
1725 There can be at most one breakpoint. When breakpoint is set, any prior
1726 one is removed. The breakpoint may be set only in replay mode and only
1727 "in the future", i.e. at instruction counts greater than the current one.
1728 The current instruction count can be observed with ``info replay``.
1729 ERST
1730
1731 {
1732 .name = "replay_delete_break",
1733 .args_type = "",
1734 .params = "",
1735 .help = "remove replay breakpoint",
1736 .cmd = hmp_replay_delete_break,
1737 },
1738
1739 SRST
1740 ``replay_delete_break``
1741 Remove replay breakpoint which was previously set with ``replay_break``.
1742 The command is ignored when there are no replay breakpoints.
1743 ERST
1744
1745 {
1746 .name = "replay_seek",
1747 .args_type = "icount:l",
1748 .params = "icount",
1749 .help = "replay execution to the specified instruction count",
1750 .cmd = hmp_replay_seek,
1751 },
1752
1753 SRST
1754 ``replay_seek`` *icount*
1755 Automatically proceed to the instruction count *icount*, when
1756 replaying the execution. The command automatically loads nearest
1757 snapshot and replays the execution to find the desired instruction.
1758 When there is no preceding snapshot or the execution is not replayed,
1759 then the command fails.
1760 *icount* for the reference may be observed with ``info replay`` command.
1761 ERST
1762
1763 {
1764 .name = "calc_dirty_rate",
1765 .args_type = "dirty_ring:-r,dirty_bitmap:-b,second:l,sample_pages_per_GB:l?",
1766 .params = "[-r] [-b] second [sample_pages_per_GB]",
1767 .help = "start a round of guest dirty rate measurement (using -r to"
1768 "\n\t\t\t specify dirty ring as the method of calculation and"
1769 "\n\t\t\t -b to specify dirty bitmap as method of calculation)",
1770 .cmd = hmp_calc_dirty_rate,
1771 },
1772
1773 SRST
1774 ``calc_dirty_rate`` *second*
1775 Start a round of dirty rate measurement with the period specified in *second*.
1776 The result of the dirty rate measurement may be observed with ``info
1777 dirty_rate`` command.
1778 ERST
1779
1780 {
1781 .name = "set_vcpu_dirty_limit",
1782 .args_type = "dirty_rate:l,cpu_index:l?",
1783 .params = "dirty_rate [cpu_index]",
1784 .help = "set dirty page rate limit, use cpu_index to set limit"
1785 "\n\t\t\t\t\t on a specified virtual cpu",
1786 .cmd = hmp_set_vcpu_dirty_limit,
1787 },
1788
1789 SRST
1790 ``set_vcpu_dirty_limit``
1791 Set dirty page rate limit on virtual CPU, the information about all the
1792 virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1793 command.
1794 ERST
1795
1796 {
1797 .name = "cancel_vcpu_dirty_limit",
1798 .args_type = "cpu_index:l?",
1799 .params = "[cpu_index]",
1800 .help = "cancel dirty page rate limit, use cpu_index to cancel"
1801 "\n\t\t\t\t\t limit on a specified virtual cpu",
1802 .cmd = hmp_cancel_vcpu_dirty_limit,
1803 },
1804
1805 SRST
1806 ``cancel_vcpu_dirty_limit``
1807 Cancel dirty page rate limit on virtual CPU, the information about all the
1808 virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1809 command.
1810 ERST
1811
1812 {
1813 .name = "info",
1814 .args_type = "item:s?",
1815 .params = "[subcommand]",
1816 .help = "show various information about the system state",
1817 .cmd = hmp_info_help,
1818 .sub_table = hmp_info_cmds,
1819 .flags = "p",
1820 },
1821
1822 #if defined(CONFIG_FDT)
1823 {
1824 .name = "dumpdtb",
1825 .args_type = "filename:F",
1826 .params = "filename",
1827 .help = "dump the FDT in dtb format to 'filename'",
1828 .cmd = hmp_dumpdtb,
1829 },
1830
1831 SRST
1832 ``dumpdtb`` *filename*
1833 Dump the FDT in dtb format to *filename*.
1834 ERST
1835 #endif
1836
1837 #if defined(CONFIG_XEN_EMU)
1838 {
1839 .name = "xen-event-inject",
1840 .args_type = "port:i",
1841 .params = "port",
1842 .help = "inject event channel",
1843 .cmd = hmp_xen_event_inject,
1844 },
1845
1846 SRST
1847 ``xen-event-inject`` *port*
1848 Notify guest via event channel on port *port*.
1849 ERST
1850
1851
1852 {
1853 .name = "xen-event-list",
1854 .args_type = "",
1855 .params = "",
1856 .help = "list event channel state",
1857 .cmd = hmp_xen_event_list,
1858 },
1859
1860 SRST
1861 ``xen-event-list``
1862 List event channels in the guest
1863 ERST
1864 #endif