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