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