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1HXCOMM See docs/devel/docs.rst for the format of this file.
2HXCOMM
3HXCOMM This file defines the contents of an array of HMPCommand structs
4HXCOMM which specify the name, behaviour and help text for HMP commands.
5HXCOMM Text between SRST and ERST is rST format documentation.
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 = hmp_help,
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 .flags = "p",
82 },
83
84SRST
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.
90ERST
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
101SRST
102``block_stream``
103 Copy data from a backing file into a block device.
104ERST
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
115SRST
116``block_job_set_speed``
117 Set maximum speed for a background block operation.
118ERST
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
131SRST
132``block_job_cancel``
133 Stop an active background block operation (streaming, mirroring).
134ERST
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
145SRST
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.
149ERST
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
160SRST
161``block_job_pause``
162 Pause an active block streaming operation.
163ERST
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
174SRST
175``block_job_resume``
176 Resume a paused block streaming operation.
177ERST
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
187SRST
188``eject [-f]`` *device*
189 Eject a removable medium (use -f to force it).
190ERST
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
200SRST
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).
208ERST
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
218SRST
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
253ERST
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
267SRST
268``screendump`` *filename*
269 Save screen into PPM image *filename*.
270ERST
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
281SRST
282``logfile`` *filename*
283 Output logs to *filename*.
284ERST
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
296SRST
297``trace-event``
298 changes status of a trace event
299ERST
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
310SRST
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.
314ERST
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
325SRST
326``log`` *item1*\ [,...]
327 Activate logging of the specified items.
328ERST
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
338SRST
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.
347ERST
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
358SRST
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.
364ERST
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
375SRST
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.
381ERST
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
391SRST
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.
399ERST
400
401 {
402 .name = "singlestep",
403 .args_type = "option:s?",
404 .params = "[on|off]",
405 .help = "deprecated synonym for one-insn-per-tb",
406 .cmd = hmp_one_insn_per_tb,
407 },
408
409SRST
410``singlestep [off]``
411 This is a deprecated synonym for the one-insn-per-tb command.
412ERST
413
414 {
415 .name = "stop|s",
416 .args_type = "",
417 .params = "",
418 .help = "stop emulation",
419 .cmd = hmp_stop,
420 },
421
422SRST
423``stop`` or ``s``
424 Stop emulation.
425ERST
426
427 {
428 .name = "cont|c",
429 .args_type = "",
430 .params = "",
431 .help = "resume emulation",
432 .cmd = hmp_cont,
433 },
434
435SRST
436``cont`` or ``c``
437 Resume emulation.
438ERST
439
440 {
441 .name = "system_wakeup",
442 .args_type = "",
443 .params = "",
444 .help = "wakeup guest from suspend",
445 .cmd = hmp_system_wakeup,
446 },
447
448SRST
449``system_wakeup``
450 Wakeup guest from suspend.
451ERST
452
453 {
454 .name = "gdbserver",
455 .args_type = "device:s?",
456 .params = "[device]",
457 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
458 .cmd = hmp_gdbserver,
459 },
460
461SRST
462``gdbserver`` [*port*]
463 Start gdbserver session (default *port*\=1234)
464ERST
465
466 {
467 .name = "x",
468 .args_type = "fmt:/,addr:l",
469 .params = "/fmt addr",
470 .help = "virtual memory dump starting at 'addr'",
471 .cmd = hmp_memory_dump,
472 },
473
474SRST
475``x/``\ *fmt* *addr*
476 Virtual memory dump starting at *addr*.
477ERST
478
479 {
480 .name = "xp",
481 .args_type = "fmt:/,addr:l",
482 .params = "/fmt addr",
483 .help = "physical memory dump starting at 'addr'",
484 .cmd = hmp_physical_memory_dump,
485 },
486
487SRST
488``xp /``\ *fmt* *addr*
489 Physical memory dump starting at *addr*.
490
491 *fmt* is a format which tells the command how to format the
492 data. Its syntax is: ``/{count}{format}{size}``
493
494 *count*
495 is the number of items to be dumped.
496 *format*
497 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
498 c (char) or i (asm instruction).
499 *size*
500 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
501 ``h`` or ``w`` can be specified with the ``i`` format to
502 respectively select 16 or 32 bit code instruction size.
503
504 Examples:
505
506 Dump 10 instructions at the current instruction pointer::
507
508 (qemu) x/10i $eip
509 0x90107063: ret
510 0x90107064: sti
511 0x90107065: lea 0x0(%esi,1),%esi
512 0x90107069: lea 0x0(%edi,1),%edi
513 0x90107070: ret
514 0x90107071: jmp 0x90107080
515 0x90107073: nop
516 0x90107074: nop
517 0x90107075: nop
518 0x90107076: nop
519
520 Dump 80 16 bit values at the start of the video memory::
521
522 (qemu) xp/80hx 0xb8000
523 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
524 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
525 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
526 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
527 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
528 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
529 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
530 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
531 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
532 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
533
534ERST
535
536 {
537 .name = "gpa2hva",
538 .args_type = "addr:l",
539 .params = "addr",
540 .help = "print the host virtual address corresponding to a guest physical address",
541 .cmd = hmp_gpa2hva,
542 },
543
544SRST
545``gpa2hva`` *addr*
546 Print the host virtual address at which the guest's physical address *addr*
547 is mapped.
548ERST
549
550#ifdef CONFIG_LINUX
551 {
552 .name = "gpa2hpa",
553 .args_type = "addr:l",
554 .params = "addr",
555 .help = "print the host physical address corresponding to a guest physical address",
556 .cmd = hmp_gpa2hpa,
557 },
558#endif
559
560SRST
561``gpa2hpa`` *addr*
562 Print the host physical address at which the guest's physical address *addr*
563 is mapped.
564ERST
565
566 {
567 .name = "gva2gpa",
568 .args_type = "addr:l",
569 .params = "addr",
570 .help = "print the guest physical address corresponding to a guest virtual address",
571 .cmd = hmp_gva2gpa,
572 },
573
574SRST
575``gva2gpa`` *addr*
576 Print the guest physical address at which the guest's virtual address *addr*
577 is mapped based on the mapping for the current CPU.
578ERST
579
580 {
581 .name = "print|p",
582 .args_type = "fmt:/,val:l",
583 .params = "/fmt expr",
584 .help = "print expression value (use $reg for CPU register access)",
585 .cmd = hmp_print,
586 },
587
588SRST
589``print`` or ``p/``\ *fmt* *expr*
590 Print expression value. Only the *format* part of *fmt* is
591 used.
592ERST
593
594 {
595 .name = "i",
596 .args_type = "fmt:/,addr:i,index:i.",
597 .params = "/fmt addr",
598 .help = "I/O port read",
599 .cmd = hmp_ioport_read,
600 },
601
602SRST
603``i/``\ *fmt* *addr* [.\ *index*\ ]
604 Read I/O port.
605ERST
606
607 {
608 .name = "o",
609 .args_type = "fmt:/,addr:i,val:i",
610 .params = "/fmt addr value",
611 .help = "I/O port write",
612 .cmd = hmp_ioport_write,
613 },
614
615SRST
616``o/``\ *fmt* *addr* *val*
617 Write to I/O port.
618ERST
619
620 {
621 .name = "sendkey",
622 .args_type = "keys:s,hold-time:i?",
623 .params = "keys [hold_ms]",
624 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
625 .cmd = hmp_sendkey,
626 .command_completion = sendkey_completion,
627 },
628
629SRST
630``sendkey`` *keys*
631 Send *keys* to the guest. *keys* could be the name of the
632 key or the raw value in hexadecimal format. Use ``-`` to press
633 several keys simultaneously. Example::
634
635 sendkey ctrl-alt-f1
636
637 This command is useful to send keys that your graphical user interface
638 intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
639ERST
640 {
641 .name = "sync-profile",
642 .args_type = "op:s?",
643 .params = "[on|off|reset]",
644 .help = "enable, disable or reset synchronization profiling. "
645 "With no arguments, prints whether profiling is on or off.",
646 .cmd = hmp_sync_profile,
647 },
648
649SRST
650``sync-profile [on|off|reset]``
651 Enable, disable or reset synchronization profiling. With no arguments, prints
652 whether profiling is on or off.
653ERST
654
655 {
656 .name = "system_reset",
657 .args_type = "",
658 .params = "",
659 .help = "reset the system",
660 .cmd = hmp_system_reset,
661 },
662
663SRST
664``system_reset``
665 Reset the system.
666ERST
667
668 {
669 .name = "system_powerdown",
670 .args_type = "",
671 .params = "",
672 .help = "send system power down event",
673 .cmd = hmp_system_powerdown,
674 },
675
676SRST
677``system_powerdown``
678 Power down the system (if supported).
679ERST
680
681 {
682 .name = "sum",
683 .args_type = "start:i,size:i",
684 .params = "addr size",
685 .help = "compute the checksum of a memory region",
686 .cmd = hmp_sum,
687 },
688
689SRST
690``sum`` *addr* *size*
691 Compute the checksum of a memory region.
692ERST
693
694 {
695 .name = "device_add",
696 .args_type = "device:O",
697 .params = "driver[,prop=value][,...]",
698 .help = "add device, like -device on the command line",
699 .cmd = hmp_device_add,
700 .command_completion = device_add_completion,
701 },
702
703SRST
704``device_add`` *config*
705 Add device.
706ERST
707
708 {
709 .name = "device_del",
710 .args_type = "id:s",
711 .params = "device",
712 .help = "remove device",
713 .cmd = hmp_device_del,
714 .command_completion = device_del_completion,
715 },
716
717SRST
718``device_del`` *id*
719 Remove device *id*. *id* may be a short ID
720 or a QOM object path.
721ERST
722
723 {
724 .name = "cpu",
725 .args_type = "index:i",
726 .params = "index",
727 .help = "set the default CPU",
728 .cmd = hmp_cpu,
729 },
730
731SRST
732``cpu`` *index*
733 Set the default CPU.
734ERST
735
736 {
737 .name = "mouse_move",
738 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
739 .params = "dx dy [dz]",
740 .help = "send mouse move events",
741 .cmd = hmp_mouse_move,
742 },
743
744SRST
745``mouse_move`` *dx* *dy* [*dz*]
746 Move the active mouse to the specified coordinates *dx* *dy*
747 with optional scroll axis *dz*.
748ERST
749
750 {
751 .name = "mouse_button",
752 .args_type = "button_state:i",
753 .params = "state",
754 .help = "change mouse button state (1=L, 2=M, 4=R)",
755 .cmd = hmp_mouse_button,
756 },
757
758SRST
759``mouse_button`` *val*
760 Change the active mouse button state *val* (1=L, 2=M, 4=R).
761ERST
762
763 {
764 .name = "mouse_set",
765 .args_type = "index:i",
766 .params = "index",
767 .help = "set which mouse device receives events",
768 .cmd = hmp_mouse_set,
769 },
770
771SRST
772``mouse_set`` *index*
773 Set which mouse device receives events at given *index*, index
774 can be obtained with::
775
776 info mice
777
778ERST
779
780 {
781 .name = "wavcapture",
782 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
783 .params = "path audiodev [frequency [bits [channels]]]",
784 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
785 .cmd = hmp_wavcapture,
786 },
787SRST
788``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
789 Capture audio into *filename* from *audiodev*, using sample rate
790 *frequency* bits per sample *bits* and number of channels
791 *channels*.
792
793 Defaults:
794
795 - Sample rate = 44100 Hz - CD quality
796 - Bits = 16
797 - Number of channels = 2 - Stereo
798ERST
799
800 {
801 .name = "stopcapture",
802 .args_type = "n:i",
803 .params = "capture index",
804 .help = "stop capture",
805 .cmd = hmp_stopcapture,
806 },
807SRST
808``stopcapture`` *index*
809 Stop capture with a given *index*, index can be obtained with::
810
811 info capture
812
813ERST
814
815 {
816 .name = "memsave",
817 .args_type = "val:l,size:i,filename:s",
818 .params = "addr size file",
819 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
820 .cmd = hmp_memsave,
821 },
822
823SRST
824``memsave`` *addr* *size* *file*
825 save to disk virtual memory dump starting at *addr* of size *size*.
826ERST
827
828 {
829 .name = "pmemsave",
830 .args_type = "val:l,size:i,filename:s",
831 .params = "addr size file",
832 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
833 .cmd = hmp_pmemsave,
834 },
835
836SRST
837``pmemsave`` *addr* *size* *file*
838 save to disk physical memory dump starting at *addr* of size *size*.
839ERST
840
841 {
842 .name = "boot_set",
843 .args_type = "bootdevice:s",
844 .params = "bootdevice",
845 .help = "define new values for the boot device list",
846 .cmd = hmp_boot_set,
847 },
848
849SRST
850``boot_set`` *bootdevicelist*
851 Define new values for the boot device list. Those values will override
852 the values specified on the command line through the ``-boot`` option.
853
854 The values that can be specified here depend on the machine type, but are
855 the same that can be specified in the ``-boot`` command line option.
856ERST
857
858 {
859 .name = "nmi",
860 .args_type = "",
861 .params = "",
862 .help = "inject an NMI",
863 .cmd = hmp_nmi,
864 },
865SRST
866``nmi`` *cpu*
867 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
868ERST
869
870 {
871 .name = "ringbuf_write",
872 .args_type = "device:s,data:s",
873 .params = "device data",
874 .help = "Write to a ring buffer character device",
875 .cmd = hmp_ringbuf_write,
876 .command_completion = ringbuf_write_completion,
877 },
878
879SRST
880``ringbuf_write`` *device* *data*
881 Write *data* to ring buffer character device *device*.
882 *data* must be a UTF-8 string.
883ERST
884
885 {
886 .name = "ringbuf_read",
887 .args_type = "device:s,size:i",
888 .params = "device size",
889 .help = "Read from a ring buffer character device",
890 .cmd = hmp_ringbuf_read,
891 .command_completion = ringbuf_write_completion,
892 },
893
894SRST
895``ringbuf_read`` *device*
896 Read and print up to *size* bytes from ring buffer character
897 device *device*.
898 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
899 character code in hexadecimal. Character ``\`` is printed ``\\``.
900 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
901 NUL characters, after the ring buffer lost data, and when reading
902 stops because the size limit is reached.
903ERST
904
905 {
906 .name = "announce_self",
907 .args_type = "interfaces:s?,id:s?",
908 .params = "[interfaces] [id]",
909 .help = "Trigger GARP/RARP announcements",
910 .cmd = hmp_announce_self,
911 },
912
913SRST
914``announce_self``
915 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
916 updating the network infrastructure after a reconfiguration or some forms
917 of migration. The timings of the round are set by the migration announce
918 parameters. An optional comma separated *interfaces* list restricts the
919 announce to the named set of interfaces. An optional *id* can be used to
920 start a separate announce timer and to change the parameters of it later.
921ERST
922
923 {
924 .name = "migrate",
925 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
926 .params = "[-d] [-b] [-i] [-r] uri",
927 .help = "migrate to URI (using -d to not wait for completion)"
928 "\n\t\t\t -b for migration without shared storage with"
929 " full copy of disk\n\t\t\t -i for migration without "
930 "shared storage with incremental copy of disk "
931 "(base image shared between src and destination)"
932 "\n\t\t\t -r to resume a paused migration",
933 .cmd = hmp_migrate,
934 },
935
936
937SRST
938``migrate [-d] [-b] [-i]`` *uri*
939 Migrate to *uri* (using -d to not wait for completion).
940
941 ``-b``
942 for migration with full copy of disk
943 ``-i``
944 for migration with incremental copy of disk (base image is shared)
945ERST
946
947 {
948 .name = "migrate_cancel",
949 .args_type = "",
950 .params = "",
951 .help = "cancel the current VM migration",
952 .cmd = hmp_migrate_cancel,
953 },
954
955SRST
956``migrate_cancel``
957 Cancel the current VM migration.
958ERST
959
960 {
961 .name = "migrate_continue",
962 .args_type = "state:s",
963 .params = "state",
964 .help = "Continue migration from the given paused state",
965 .cmd = hmp_migrate_continue,
966 },
967SRST
968``migrate_continue`` *state*
969 Continue migration from the paused state *state*
970ERST
971
972 {
973 .name = "migrate_incoming",
974 .args_type = "uri:s",
975 .params = "uri",
976 .help = "Continue an incoming migration from an -incoming defer",
977 .cmd = hmp_migrate_incoming,
978 },
979
980SRST
981``migrate_incoming`` *uri*
982 Continue an incoming migration using the *uri* (that has the same syntax
983 as the ``-incoming`` option).
984ERST
985
986 {
987 .name = "migrate_recover",
988 .args_type = "uri:s",
989 .params = "uri",
990 .help = "Continue a paused incoming postcopy migration",
991 .cmd = hmp_migrate_recover,
992 },
993
994SRST
995``migrate_recover`` *uri*
996 Continue a paused incoming postcopy migration using the *uri*.
997ERST
998
999 {
1000 .name = "migrate_pause",
1001 .args_type = "",
1002 .params = "",
1003 .help = "Pause an ongoing migration (postcopy-only)",
1004 .cmd = hmp_migrate_pause,
1005 },
1006
1007SRST
1008``migrate_pause``
1009 Pause an ongoing migration. Currently it only supports postcopy.
1010ERST
1011
1012 {
1013 .name = "migrate_set_capability",
1014 .args_type = "capability:s,state:b",
1015 .params = "capability state",
1016 .help = "Enable/Disable the usage of a capability for migration",
1017 .cmd = hmp_migrate_set_capability,
1018 .command_completion = migrate_set_capability_completion,
1019 },
1020
1021SRST
1022``migrate_set_capability`` *capability* *state*
1023 Enable/Disable the usage of a capability *capability* for migration.
1024ERST
1025
1026 {
1027 .name = "migrate_set_parameter",
1028 .args_type = "parameter:s,value:s",
1029 .params = "parameter value",
1030 .help = "Set the parameter for migration",
1031 .cmd = hmp_migrate_set_parameter,
1032 .command_completion = migrate_set_parameter_completion,
1033 },
1034
1035SRST
1036``migrate_set_parameter`` *parameter* *value*
1037 Set the parameter *parameter* for migration.
1038ERST
1039
1040 {
1041 .name = "migrate_start_postcopy",
1042 .args_type = "",
1043 .params = "",
1044 .help = "Followup to a migration command to switch the migration"
1045 " to postcopy mode. The postcopy-ram capability must "
1046 "be set on both source and destination before the "
1047 "original migration command .",
1048 .cmd = hmp_migrate_start_postcopy,
1049 },
1050
1051SRST
1052``migrate_start_postcopy``
1053 Switch in-progress migration to postcopy mode. Ignored after the end of
1054 migration (or once already in postcopy).
1055ERST
1056
1057#ifdef CONFIG_REPLICATION
1058 {
1059 .name = "x_colo_lost_heartbeat",
1060 .args_type = "",
1061 .params = "",
1062 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1063 "a failover or takeover is needed.",
1064 .cmd = hmp_x_colo_lost_heartbeat,
1065 },
1066#endif
1067
1068SRST
1069``x_colo_lost_heartbeat``
1070 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1071ERST
1072
1073 {
1074 .name = "client_migrate_info",
1075 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1076 .params = "protocol hostname port tls-port cert-subject",
1077 .help = "set migration information for remote display",
1078 .cmd = hmp_client_migrate_info,
1079 },
1080
1081SRST
1082``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1083 Set migration information for remote display. This makes the server
1084 ask the client to automatically reconnect using the new parameters
1085 once migration finished successfully. Only implemented for SPICE.
1086ERST
1087
1088 {
1089 .name = "dump-guest-memory",
1090 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,raw:-R,filename:F,begin:l?,length:l?",
1091 .params = "[-p] [-d] [-z|-l|-s|-w] [-R] filename [begin length]",
1092 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1093 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1094 "-d: return immediately (do not wait for completion).\n\t\t\t"
1095 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1096 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1097 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1098 "-R: when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened\n\t\t\t"
1099 " format\n\t\t\t"
1100 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1101 " for Windows x86 and x64 guests with vmcoreinfo driver only.\n\t\t\t"
1102 "begin: the starting physical address.\n\t\t\t"
1103 "length: the memory size, in bytes.",
1104 .cmd = hmp_dump_guest_memory,
1105 },
1106
1107SRST
1108``dump-guest-memory [-p]`` *filename* *begin* *length*
1109 \
1110``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1111 Dump guest memory to *protocol*. The file can be processed with crash or
1112 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1113
1114 ``-p``
1115 do paging to get guest's memory mapping.
1116 ``-z``
1117 dump in kdump-compressed format, with zlib compression.
1118 ``-l``
1119 dump in kdump-compressed format, with lzo compression.
1120 ``-s``
1121 dump in kdump-compressed format, with snappy compression.
1122 ``-R``
1123 when using kdump (-z, -l, -s), use raw rather than makedumpfile-flattened
1124 format
1125 ``-w``
1126 dump in Windows crashdump format (can be used instead of ELF-dump converting),
1127 for Windows x64 guests with vmcoreinfo driver only
1128 *filename*
1129 dump file name.
1130 *begin*
1131 the starting physical address. It's optional, and should be
1132 specified together with *length*.
1133 *length*
1134 the memory size, in bytes. It's optional, and should be specified
1135 together with *begin*.
1136
1137ERST
1138
1139#if defined(TARGET_S390X)
1140 {
1141 .name = "dump-skeys",
1142 .args_type = "filename:F",
1143 .params = "",
1144 .help = "Save guest storage keys into file 'filename'.\n",
1145 .cmd = hmp_dump_skeys,
1146 },
1147#endif
1148
1149SRST
1150``dump-skeys`` *filename*
1151 Save guest storage keys to a file.
1152ERST
1153
1154#if defined(TARGET_S390X)
1155 {
1156 .name = "migration_mode",
1157 .args_type = "mode:i",
1158 .params = "mode",
1159 .help = "Enables or disables migration mode\n",
1160 .cmd = hmp_migrationmode,
1161 },
1162#endif
1163
1164SRST
1165``migration_mode`` *mode*
1166 Enables or disables migration mode.
1167ERST
1168
1169 {
1170 .name = "snapshot_blkdev",
1171 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1172 .params = "[-n] device [new-image-file] [format]",
1173 .help = "initiates a live snapshot\n\t\t\t"
1174 "of device. If a new image file is specified, the\n\t\t\t"
1175 "new image file will become the new root image.\n\t\t\t"
1176 "If format is specified, the snapshot file will\n\t\t\t"
1177 "be created in that format.\n\t\t\t"
1178 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1179 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1180 "recreating it from scratch.",
1181 .cmd = hmp_snapshot_blkdev,
1182 },
1183
1184SRST
1185``snapshot_blkdev``
1186 Snapshot device, using snapshot file as target if provided
1187ERST
1188
1189 {
1190 .name = "snapshot_blkdev_internal",
1191 .args_type = "device:B,name:s",
1192 .params = "device name",
1193 .help = "take an internal snapshot of device.\n\t\t\t"
1194 "The format of the image used by device must\n\t\t\t"
1195 "support it, such as qcow2.\n\t\t\t",
1196 .cmd = hmp_snapshot_blkdev_internal,
1197 },
1198
1199SRST
1200``snapshot_blkdev_internal``
1201 Take an internal snapshot on device if it support
1202ERST
1203
1204 {
1205 .name = "snapshot_delete_blkdev_internal",
1206 .args_type = "device:B,name:s,id:s?",
1207 .params = "device name [id]",
1208 .help = "delete an internal snapshot of device.\n\t\t\t"
1209 "If id is specified, qemu will try delete\n\t\t\t"
1210 "the snapshot matching both id and name.\n\t\t\t"
1211 "The format of the image used by device must\n\t\t\t"
1212 "support it, such as qcow2.\n\t\t\t",
1213 .cmd = hmp_snapshot_delete_blkdev_internal,
1214 },
1215
1216SRST
1217``snapshot_delete_blkdev_internal``
1218 Delete an internal snapshot on device if it support
1219ERST
1220
1221 {
1222 .name = "drive_mirror",
1223 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1224 .params = "[-n] [-f] device target [format]",
1225 .help = "initiates live storage\n\t\t\t"
1226 "migration for a device. The device's contents are\n\t\t\t"
1227 "copied to the new image file, including data that\n\t\t\t"
1228 "is written after the command is started.\n\t\t\t"
1229 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1230 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1231 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1232 "so that the result does not need a backing file.\n\t\t\t",
1233 .cmd = hmp_drive_mirror,
1234 },
1235SRST
1236``drive_mirror``
1237 Start mirroring a block device's writes to a new destination,
1238 using the specified target.
1239ERST
1240
1241 {
1242 .name = "drive_backup",
1243 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1244 .params = "[-n] [-f] [-c] device target [format]",
1245 .help = "initiates a point-in-time\n\t\t\t"
1246 "copy for a device. The device's contents are\n\t\t\t"
1247 "copied to the new image file, excluding data that\n\t\t\t"
1248 "is written after the command is started.\n\t\t\t"
1249 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1250 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1251 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1252 "so that the result does not need a backing file.\n\t\t\t"
1253 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1254 "(if the target format supports it).\n\t\t\t",
1255 .cmd = hmp_drive_backup,
1256 },
1257SRST
1258``drive_backup``
1259 Start a point-in-time copy of a block device to a specified target.
1260ERST
1261
1262 {
1263 .name = "drive_add",
1264 .args_type = "node:-n,pci_addr:s,opts:s",
1265 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1266 "[file=file][,if=type][,bus=n]\n"
1267 "[,unit=m][,media=d][,index=i]\n"
1268 "[,snapshot=on|off][,cache=on|off]\n"
1269 "[,readonly=on|off][,copy-on-read=on|off]",
1270 .help = "add drive to PCI storage controller",
1271 .cmd = hmp_drive_add,
1272 },
1273
1274SRST
1275``drive_add``
1276 Add drive to PCI storage controller.
1277ERST
1278
1279 {
1280 .name = "pcie_aer_inject_error",
1281 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1282 "id:s,error_status:s,"
1283 "header0:i?,header1:i?,header2:i?,header3:i?,"
1284 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1285 .params = "[-a] [-c] id "
1286 "<error_status> [<tlp header> [<tlp header prefix>]]",
1287 .help = "inject pcie aer error\n\t\t\t"
1288 " -a for advisory non fatal error\n\t\t\t"
1289 " -c for correctable error\n\t\t\t"
1290 "<id> = qdev device id\n\t\t\t"
1291 "<error_status> = error string or 32bit\n\t\t\t"
1292 "<tlp header> = 32bit x 4\n\t\t\t"
1293 "<tlp header prefix> = 32bit x 4",
1294 .cmd = hmp_pcie_aer_inject_error,
1295 },
1296
1297SRST
1298``pcie_aer_inject_error``
1299 Inject PCIe AER error
1300ERST
1301
1302 {
1303 .name = "netdev_add",
1304 .args_type = "netdev:O",
1305 .params = "[user|tap|socket|stream|dgram|vde|bridge|hubport|netmap|vhost-user"
1306#ifdef CONFIG_AF_XDP
1307 "|af-xdp"
1308#endif
1309#ifdef CONFIG_VMNET
1310 "|vmnet-host|vmnet-shared|vmnet-bridged"
1311#endif
1312 "],id=str[,prop=value][,...]",
1313 .help = "add host network device",
1314 .cmd = hmp_netdev_add,
1315 .command_completion = netdev_add_completion,
1316 .flags = "p",
1317 },
1318
1319SRST
1320``netdev_add``
1321 Add host network device.
1322ERST
1323
1324 {
1325 .name = "netdev_del",
1326 .args_type = "id:s",
1327 .params = "id",
1328 .help = "remove host network device",
1329 .cmd = hmp_netdev_del,
1330 .command_completion = netdev_del_completion,
1331 .flags = "p",
1332 },
1333
1334SRST
1335``netdev_del``
1336 Remove host network device.
1337ERST
1338
1339 {
1340 .name = "object_add",
1341 .args_type = "object:S",
1342 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1343 .help = "create QOM object",
1344 .cmd = hmp_object_add,
1345 .command_completion = object_add_completion,
1346 .flags = "p",
1347 },
1348
1349SRST
1350``object_add``
1351 Create QOM object.
1352ERST
1353
1354 {
1355 .name = "object_del",
1356 .args_type = "id:s",
1357 .params = "id",
1358 .help = "destroy QOM object",
1359 .cmd = hmp_object_del,
1360 .command_completion = object_del_completion,
1361 .flags = "p",
1362 },
1363
1364SRST
1365``object_del``
1366 Destroy QOM object.
1367ERST
1368
1369#ifdef CONFIG_SLIRP
1370 {
1371 .name = "hostfwd_add",
1372 .args_type = "arg1:s,arg2:s?",
1373 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1374 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1375 .cmd = hmp_hostfwd_add,
1376 },
1377#endif
1378SRST
1379``hostfwd_add``
1380 Redirect TCP or UDP connections from host to guest (requires -net user).
1381ERST
1382
1383#ifdef CONFIG_SLIRP
1384 {
1385 .name = "hostfwd_remove",
1386 .args_type = "arg1:s,arg2:s?",
1387 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1388 .help = "remove host-to-guest TCP or UDP redirection",
1389 .cmd = hmp_hostfwd_remove,
1390 },
1391
1392#endif
1393SRST
1394``hostfwd_remove``
1395 Remove host-to-guest TCP or UDP redirection.
1396ERST
1397
1398 {
1399 .name = "balloon",
1400 .args_type = "value:M",
1401 .params = "target",
1402 .help = "request VM to change its memory allocation (in MB)",
1403 .cmd = hmp_balloon,
1404 },
1405
1406SRST
1407``balloon`` *value*
1408 Request VM to change its memory allocation to *value* (in MB).
1409ERST
1410
1411 {
1412 .name = "set_link",
1413 .args_type = "name:s,up:b",
1414 .params = "name on|off",
1415 .help = "change the link status of a network adapter",
1416 .cmd = hmp_set_link,
1417 .command_completion = set_link_completion,
1418 },
1419
1420SRST
1421``set_link`` *name* ``[on|off]``
1422 Switch link *name* on (i.e. up) or off (i.e. down).
1423ERST
1424
1425 {
1426 .name = "watchdog_action",
1427 .args_type = "action:s",
1428 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1429 .help = "change watchdog action",
1430 .cmd = hmp_watchdog_action,
1431 .command_completion = watchdog_action_completion,
1432 },
1433
1434SRST
1435``watchdog_action``
1436 Change watchdog action.
1437ERST
1438
1439 {
1440 .name = "nbd_server_start",
1441 .args_type = "all:-a,writable:-w,uri:s",
1442 .params = "nbd_server_start [-a] [-w] host:port",
1443 .help = "serve block devices on the given host and port",
1444 .cmd = hmp_nbd_server_start,
1445 .flags = "p",
1446 },
1447SRST
1448``nbd_server_start`` *host*:*port*
1449 Start an NBD server on the given host and/or port. If the ``-a``
1450 option is included, all of the virtual machine's block devices that
1451 have an inserted media on them are automatically exported; in this case,
1452 the ``-w`` option makes the devices writable too.
1453ERST
1454
1455 {
1456 .name = "nbd_server_add",
1457 .args_type = "writable:-w,device:B,name:s?",
1458 .params = "nbd_server_add [-w] device [name]",
1459 .help = "export a block device via NBD",
1460 .cmd = hmp_nbd_server_add,
1461 .flags = "p",
1462 },
1463SRST
1464``nbd_server_add`` *device* [ *name* ]
1465 Export a block device through QEMU's NBD server, which must be started
1466 beforehand with ``nbd_server_start``. The ``-w`` option makes the
1467 exported device writable too. The export name is controlled by *name*,
1468 defaulting to *device*.
1469ERST
1470
1471 {
1472 .name = "nbd_server_remove",
1473 .args_type = "force:-f,name:s",
1474 .params = "nbd_server_remove [-f] name",
1475 .help = "remove an export previously exposed via NBD",
1476 .cmd = hmp_nbd_server_remove,
1477 .flags = "p",
1478 },
1479SRST
1480``nbd_server_remove [-f]`` *name*
1481 Stop exporting a block device through QEMU's NBD server, which was
1482 previously started with ``nbd_server_add``. The ``-f``
1483 option forces the server to drop the export immediately even if
1484 clients are connected; otherwise the command fails unless there are no
1485 clients.
1486ERST
1487
1488 {
1489 .name = "nbd_server_stop",
1490 .args_type = "",
1491 .params = "nbd_server_stop",
1492 .help = "stop serving block devices using the NBD protocol",
1493 .cmd = hmp_nbd_server_stop,
1494 .flags = "p",
1495 },
1496SRST
1497``nbd_server_stop``
1498 Stop the QEMU embedded NBD server.
1499ERST
1500
1501
1502#if defined(TARGET_I386)
1503
1504 {
1505 .name = "mce",
1506 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1507 .params = "[-b] cpu bank status mcgstatus addr misc",
1508 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1509 .cmd = hmp_mce,
1510 },
1511
1512#endif
1513SRST
1514``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1515 Inject an MCE on the given CPU (x86 only).
1516ERST
1517
1518#ifdef CONFIG_POSIX
1519 {
1520 .name = "getfd",
1521 .args_type = "fdname:s",
1522 .params = "getfd name",
1523 .help = "receive a file descriptor via SCM rights and assign it a name",
1524 .cmd = hmp_getfd,
1525 .flags = "p",
1526 },
1527
1528SRST
1529``getfd`` *fdname*
1530 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1531 mechanism on unix sockets, it is stored using the name *fdname* for
1532 later use by other monitor commands.
1533ERST
1534#endif
1535
1536 {
1537 .name = "closefd",
1538 .args_type = "fdname:s",
1539 .params = "closefd name",
1540 .help = "close a file descriptor previously passed via SCM rights",
1541 .cmd = hmp_closefd,
1542 .flags = "p",
1543 },
1544
1545SRST
1546``closefd`` *fdname*
1547 Close the file descriptor previously assigned to *fdname* using the
1548 ``getfd`` command. This is only needed if the file descriptor was never
1549 used by another monitor command.
1550ERST
1551
1552 {
1553 .name = "block_set_io_throttle",
1554 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1555 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1556 .help = "change I/O throttle limits for a block drive",
1557 .cmd = hmp_block_set_io_throttle,
1558 .flags = "p",
1559 },
1560
1561SRST
1562``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1563 Change I/O throttle limits for a block drive to
1564 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1565 *device* can be a block device name, a qdev ID or a QOM path.
1566ERST
1567
1568 {
1569 .name = "set_password",
1570 .args_type = "protocol:s,password:s,display:-ds,connected:s?",
1571 .params = "protocol password [-d display] [action-if-connected]",
1572 .help = "set spice/vnc password",
1573 .cmd = hmp_set_password,
1574 },
1575
1576SRST
1577``set_password [ vnc | spice ] password [ -d display ] [ action-if-connected ]``
1578 Change spice/vnc password. *display* can be used with 'vnc' to specify
1579 which display to set the password on. *action-if-connected* specifies
1580 what should happen in case a connection is established: *fail* makes
1581 the password change fail. *disconnect* changes the password and
1582 disconnects the client. *keep* changes the password and keeps the
1583 connection up. *keep* is the default.
1584ERST
1585
1586 {
1587 .name = "expire_password",
1588 .args_type = "protocol:s,time:s,display:-ds",
1589 .params = "protocol time [-d display]",
1590 .help = "set spice/vnc password expire-time",
1591 .cmd = hmp_expire_password,
1592 },
1593
1594SRST
1595``expire_password [ vnc | spice ] expire-time [ -d display ]``
1596 Specify when a password for spice/vnc becomes invalid.
1597 *display* behaves the same as in ``set_password``.
1598 *expire-time* accepts:
1599
1600 ``now``
1601 Invalidate password instantly.
1602 ``never``
1603 Password stays valid forever.
1604 ``+``\ *nsec*
1605 Password stays valid for *nsec* seconds starting now.
1606 *nsec*
1607 Password is invalidated at the given time. *nsec* are the seconds
1608 passed since 1970, i.e. unix epoch.
1609
1610ERST
1611
1612 {
1613 .name = "chardev-add",
1614 .args_type = "args:s",
1615 .params = "args",
1616 .help = "add chardev",
1617 .cmd = hmp_chardev_add,
1618 .command_completion = chardev_add_completion,
1619 },
1620
1621SRST
1622``chardev-add`` *args*
1623 chardev-add accepts the same parameters as the -chardev command line switch.
1624ERST
1625
1626 {
1627 .name = "chardev-change",
1628 .args_type = "id:s,args:s",
1629 .params = "id args",
1630 .help = "change chardev",
1631 .cmd = hmp_chardev_change,
1632 },
1633
1634SRST
1635``chardev-change`` *args*
1636 chardev-change accepts existing chardev *id* and then the same arguments
1637 as the -chardev command line switch (except for "id").
1638ERST
1639
1640 {
1641 .name = "chardev-remove",
1642 .args_type = "id:s",
1643 .params = "id",
1644 .help = "remove chardev",
1645 .cmd = hmp_chardev_remove,
1646 .command_completion = chardev_remove_completion,
1647 },
1648
1649SRST
1650``chardev-remove`` *id*
1651 Removes the chardev *id*.
1652ERST
1653
1654 {
1655 .name = "chardev-send-break",
1656 .args_type = "id:s",
1657 .params = "id",
1658 .help = "send a break on chardev",
1659 .cmd = hmp_chardev_send_break,
1660 .command_completion = chardev_remove_completion,
1661 },
1662
1663SRST
1664``chardev-send-break`` *id*
1665 Send a break on the chardev *id*.
1666ERST
1667
1668 {
1669 .name = "qemu-io",
1670 .args_type = "qdev:-d,device:B,command:s",
1671 .params = "[-d] [device] \"[command]\"",
1672 .help = "run a qemu-io command on a block device\n\t\t\t"
1673 "-d: [device] is a device ID rather than a "
1674 "drive ID or node name",
1675 .cmd = hmp_qemu_io,
1676 },
1677
1678SRST
1679``qemu-io`` *device* *command*
1680 Executes a qemu-io command on the given block device.
1681ERST
1682
1683 {
1684 .name = "qom-list",
1685 .args_type = "path:s?",
1686 .params = "path",
1687 .help = "list QOM properties",
1688 .cmd = hmp_qom_list,
1689 .flags = "p",
1690 },
1691
1692SRST
1693``qom-list`` [*path*]
1694 Print QOM properties of object at location *path*
1695ERST
1696
1697 {
1698 .name = "qom-get",
1699 .args_type = "path:s,property:s",
1700 .params = "path property",
1701 .help = "print QOM property",
1702 .cmd = hmp_qom_get,
1703 .flags = "p",
1704 },
1705
1706SRST
1707``qom-get`` *path* *property*
1708 Print QOM property *property* of object at location *path*
1709ERST
1710
1711 {
1712 .name = "qom-set",
1713 .args_type = "json:-j,path:s,property:s,value:S",
1714 .params = "[-j] path property value",
1715 .help = "set QOM property.\n\t\t\t"
1716 "-j: the value is specified in json format.",
1717 .cmd = hmp_qom_set,
1718 .flags = "p",
1719 },
1720
1721SRST
1722``qom-set`` *path* *property* *value*
1723 Set QOM property *property* of object at location *path* to value *value*
1724ERST
1725
1726 {
1727 .name = "replay_break",
1728 .args_type = "icount:l",
1729 .params = "icount",
1730 .help = "set breakpoint at the specified instruction count",
1731 .cmd = hmp_replay_break,
1732 },
1733
1734SRST
1735``replay_break`` *icount*
1736 Set replay breakpoint at instruction count *icount*.
1737 Execution stops when the specified instruction is reached.
1738 There can be at most one breakpoint. When breakpoint is set, any prior
1739 one is removed. The breakpoint may be set only in replay mode and only
1740 "in the future", i.e. at instruction counts greater than the current one.
1741 The current instruction count can be observed with ``info replay``.
1742ERST
1743
1744 {
1745 .name = "replay_delete_break",
1746 .args_type = "",
1747 .params = "",
1748 .help = "remove replay breakpoint",
1749 .cmd = hmp_replay_delete_break,
1750 },
1751
1752SRST
1753``replay_delete_break``
1754 Remove replay breakpoint which was previously set with ``replay_break``.
1755 The command is ignored when there are no replay breakpoints.
1756ERST
1757
1758 {
1759 .name = "replay_seek",
1760 .args_type = "icount:l",
1761 .params = "icount",
1762 .help = "replay execution to the specified instruction count",
1763 .cmd = hmp_replay_seek,
1764 },
1765
1766SRST
1767``replay_seek`` *icount*
1768 Automatically proceed to the instruction count *icount*, when
1769 replaying the execution. The command automatically loads nearest
1770 snapshot and replays the execution to find the desired instruction.
1771 When there is no preceding snapshot or the execution is not replayed,
1772 then the command fails.
1773 *icount* for the reference may be observed with ``info replay`` command.
1774ERST
1775
1776 {
1777 .name = "calc_dirty_rate",
1778 .args_type = "dirty_ring:-r,dirty_bitmap:-b,second:l,sample_pages_per_GB:l?",
1779 .params = "[-r] [-b] second [sample_pages_per_GB]",
1780 .help = "start a round of guest dirty rate measurement (using -r to"
1781 "\n\t\t\t specify dirty ring as the method of calculation and"
1782 "\n\t\t\t -b to specify dirty bitmap as method of calculation)",
1783 .cmd = hmp_calc_dirty_rate,
1784 },
1785
1786SRST
1787``calc_dirty_rate`` *second*
1788 Start a round of dirty rate measurement with the period specified in *second*.
1789 The result of the dirty rate measurement may be observed with ``info
1790 dirty_rate`` command.
1791ERST
1792
1793 {
1794 .name = "set_vcpu_dirty_limit",
1795 .args_type = "dirty_rate:l,cpu_index:l?",
1796 .params = "dirty_rate [cpu_index]",
1797 .help = "set dirty page rate limit, use cpu_index to set limit"
1798 "\n\t\t\t\t\t on a specified virtual cpu",
1799 .cmd = hmp_set_vcpu_dirty_limit,
1800 },
1801
1802SRST
1803``set_vcpu_dirty_limit``
1804 Set dirty page rate limit on virtual CPU, the information about all the
1805 virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1806 command.
1807ERST
1808
1809 {
1810 .name = "cancel_vcpu_dirty_limit",
1811 .args_type = "cpu_index:l?",
1812 .params = "[cpu_index]",
1813 .help = "cancel dirty page rate limit, use cpu_index to cancel"
1814 "\n\t\t\t\t\t limit on a specified virtual cpu",
1815 .cmd = hmp_cancel_vcpu_dirty_limit,
1816 },
1817
1818SRST
1819``cancel_vcpu_dirty_limit``
1820 Cancel dirty page rate limit on virtual CPU, the information about all the
1821 virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1822 command.
1823ERST
1824
1825 {
1826 .name = "info",
1827 .args_type = "item:s?",
1828 .params = "[subcommand]",
1829 .help = "show various information about the system state",
1830 .cmd = hmp_info_help,
1831 .sub_table = hmp_info_cmds,
1832 .flags = "p",
1833 },
1834
1835#if defined(CONFIG_FDT)
1836 {
1837 .name = "dumpdtb",
1838 .args_type = "filename:F",
1839 .params = "filename",
1840 .help = "dump the FDT in dtb format to 'filename'",
1841 .cmd = hmp_dumpdtb,
1842 },
1843
1844SRST
1845``dumpdtb`` *filename*
1846 Dump the FDT in dtb format to *filename*.
1847ERST
1848#endif
1849
1850#if defined(CONFIG_XEN_EMU)
1851 {
1852 .name = "xen-event-inject",
1853 .args_type = "port:i",
1854 .params = "port",
1855 .help = "inject event channel",
1856 .cmd = hmp_xen_event_inject,
1857 },
1858
1859SRST
1860``xen-event-inject`` *port*
1861 Notify guest via event channel on port *port*.
1862ERST
1863
1864
1865 {
1866 .name = "xen-event-list",
1867 .args_type = "",
1868 .params = "",
1869 .help = "list event channel state",
1870 .cmd = hmp_xen_event_list,
1871 },
1872
1873SRST
1874``xen-event-list``
1875 List event channels in the guest
1876ERST
1877#endif