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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 = "q|quit",
44 .args_type = "",
45 .params = "",
46 .help = "quit the emulator",
47 .cmd = hmp_quit,
48 },
49
50 SRST
51 ``q`` or ``quit``
52 Quit the emulator.
53 ERST
54
55 {
56 .name = "exit_preconfig",
57 .args_type = "",
58 .params = "",
59 .help = "exit the preconfig state",
60 .cmd = hmp_exit_preconfig,
61 .flags = "p",
62 },
63
64 SRST
65 ``exit_preconfig``
66 This command makes QEMU exit the preconfig state and proceed with
67 VM initialization using configuration data provided on the command line
68 and via the QMP monitor during the preconfig state. The command is only
69 available during the preconfig state (i.e. when the --preconfig command
70 line option was in use).
71 ERST
72
73 {
74 .name = "block_resize",
75 .args_type = "device:B,size:o",
76 .params = "device size",
77 .help = "resize a block image",
78 .cmd = hmp_block_resize,
79 },
80
81 SRST
82 ``block_resize``
83 Resize a block image while a guest is running. Usually requires guest
84 action to see the updated size. Resize to a lower size is supported,
85 but should be used with extreme caution. Note that this command only
86 resizes image files, it can not resize block devices like LVM volumes.
87 ERST
88
89 {
90 .name = "block_stream",
91 .args_type = "device:B,speed:o?,base:s?",
92 .params = "device [speed [base]]",
93 .help = "copy data from a backing file into a block device",
94 .cmd = hmp_block_stream,
95 },
96
97 SRST
98 ``block_stream``
99 Copy data from a backing file into a block device.
100 ERST
101
102 {
103 .name = "block_job_set_speed",
104 .args_type = "device:B,speed:o",
105 .params = "device speed",
106 .help = "set maximum speed for a background block operation",
107 .cmd = hmp_block_job_set_speed,
108 },
109
110 SRST
111 ``block_job_set_speed``
112 Set maximum speed for a background block operation.
113 ERST
114
115 {
116 .name = "block_job_cancel",
117 .args_type = "force:-f,device:B",
118 .params = "[-f] device",
119 .help = "stop an active background block operation (use -f"
120 "\n\t\t\t if you want to abort the operation immediately"
121 "\n\t\t\t instead of keep running until data is in sync)",
122 .cmd = hmp_block_job_cancel,
123 },
124
125 SRST
126 ``block_job_cancel``
127 Stop an active background block operation (streaming, mirroring).
128 ERST
129
130 {
131 .name = "block_job_complete",
132 .args_type = "device:B",
133 .params = "device",
134 .help = "stop an active background block operation",
135 .cmd = hmp_block_job_complete,
136 },
137
138 SRST
139 ``block_job_complete``
140 Manually trigger completion of an active background block operation.
141 For mirroring, this will switch the device to the destination path.
142 ERST
143
144 {
145 .name = "block_job_pause",
146 .args_type = "device:B",
147 .params = "device",
148 .help = "pause an active background block operation",
149 .cmd = hmp_block_job_pause,
150 },
151
152 SRST
153 ``block_job_pause``
154 Pause an active block streaming operation.
155 ERST
156
157 {
158 .name = "block_job_resume",
159 .args_type = "device:B",
160 .params = "device",
161 .help = "resume a paused background block operation",
162 .cmd = hmp_block_job_resume,
163 },
164
165 SRST
166 ``block_job_resume``
167 Resume a paused block streaming operation.
168 ERST
169
170 {
171 .name = "eject",
172 .args_type = "force:-f,device:B",
173 .params = "[-f] device",
174 .help = "eject a removable medium (use -f to force it)",
175 .cmd = hmp_eject,
176 },
177
178 SRST
179 ``eject [-f]`` *device*
180 Eject a removable medium (use -f to force it).
181 ERST
182
183 {
184 .name = "drive_del",
185 .args_type = "id:B",
186 .params = "device",
187 .help = "remove host block device",
188 .cmd = hmp_drive_del,
189 },
190
191 SRST
192 ``drive_del`` *device*
193 Remove host block device. The result is that guest generated IO is no longer
194 submitted against the host device underlying the disk. Once a drive has
195 been deleted, the QEMU Block layer returns -EIO which results in IO
196 errors in the guest for applications that are reading/writing to the device.
197 These errors are always reported to the guest, regardless of the drive's error
198 actions (drive options rerror, werror).
199 ERST
200
201 {
202 .name = "change",
203 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
204 .params = "device filename [format [read-only-mode]]",
205 .help = "change a removable medium, optional format",
206 .cmd = hmp_change,
207 },
208
209 SRST
210 ``change`` *device* *setting*
211 Change the configuration of a device.
212
213 ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]]
214 Change the medium for a removable disk device to point to *filename*. eg::
215
216 (qemu) change ide1-cd0 /path/to/some.iso
217
218 *format* is optional.
219
220 *read-only-mode* may be used to change the read-only status of the device.
221 It accepts the following values:
222
223 retain
224 Retains the current status; this is the default.
225
226 read-only
227 Makes the device read-only.
228
229 read-write
230 Makes the device writable.
231
232 ``change vnc`` *display*,\ *options*
233 Change the configuration of the VNC server. The valid syntax for *display*
234 and *options* are described at :ref:`sec_005finvocation`. eg::
235
236 (qemu) change vnc localhost:1
237
238 ``change vnc password`` [*password*]
239
240 Change the password associated with the VNC server. If the new password
241 is not supplied, the monitor will prompt for it to be entered. VNC
242 passwords are only significant up to 8 letters. eg::
243
244 (qemu) change vnc password
245 Password: ********
246
247 ERST
248
249 {
250 .name = "screendump",
251 .args_type = "filename:F,device:s?,head:i?",
252 .params = "filename [device [head]]",
253 .help = "save screen from head 'head' of display device 'device' "
254 "into PPM image 'filename'",
255 .cmd = hmp_screendump,
256 },
257
258 SRST
259 ``screendump`` *filename*
260 Save screen into PPM image *filename*.
261 ERST
262
263 {
264 .name = "logfile",
265 .args_type = "filename:F",
266 .params = "filename",
267 .help = "output logs to 'filename'",
268 .cmd = hmp_logfile,
269 },
270
271 SRST
272 ``logfile`` *filename*
273 Output logs to *filename*.
274 ERST
275
276 {
277 .name = "trace-event",
278 .args_type = "name:s,option:b,vcpu:i?",
279 .params = "name on|off [vcpu]",
280 .help = "changes status of a specific trace event "
281 "(vcpu: vCPU to set, default is all)",
282 .cmd = hmp_trace_event,
283 .command_completion = trace_event_completion,
284 },
285
286 SRST
287 ``trace-event``
288 changes status of a trace event
289 ERST
290
291 #if defined(CONFIG_TRACE_SIMPLE)
292 {
293 .name = "trace-file",
294 .args_type = "op:s?,arg:F?",
295 .params = "on|off|flush|set [arg]",
296 .help = "open, close, or flush trace file, or set a new file name",
297 .cmd = hmp_trace_file,
298 },
299
300 SRST
301 ``trace-file on|off|flush``
302 Open, close, or flush the trace file. If no argument is given, the
303 status of the trace file is displayed.
304 ERST
305 #endif
306
307 {
308 .name = "log",
309 .args_type = "items:s",
310 .params = "item1[,...]",
311 .help = "activate logging of the specified items",
312 .cmd = hmp_log,
313 },
314
315 SRST
316 ``log`` *item1*\ [,...]
317 Activate logging of the specified items.
318 ERST
319
320 {
321 .name = "savevm",
322 .args_type = "name:s?",
323 .params = "tag",
324 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created",
325 .cmd = hmp_savevm,
326 },
327
328 SRST
329 ``savevm`` *tag*
330 Create a snapshot of the whole virtual machine. If *tag* is
331 provided, it is used as human readable identifier. If there is already
332 a snapshot with the same tag, it is replaced. More info at
333 :ref:`vm_005fsnapshots`.
334
335 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
336 only *tag* as parameter.
337 ERST
338
339 {
340 .name = "loadvm",
341 .args_type = "name:s",
342 .params = "tag",
343 .help = "restore a VM snapshot from its tag",
344 .cmd = hmp_loadvm,
345 .command_completion = loadvm_completion,
346 },
347
348 SRST
349 ``loadvm`` *tag*
350 Set the whole virtual machine to the snapshot identified by the tag
351 *tag*.
352
353 Since 4.0, loadvm stopped accepting snapshot id as parameter.
354 ERST
355
356 {
357 .name = "delvm",
358 .args_type = "name:s",
359 .params = "tag",
360 .help = "delete a VM snapshot from its tag",
361 .cmd = hmp_delvm,
362 .command_completion = delvm_completion,
363 },
364
365 SRST
366 ``delvm`` *tag*
367 Delete the snapshot identified by *tag*.
368
369 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
370 only *tag* as parameter.
371 ERST
372
373 {
374 .name = "singlestep",
375 .args_type = "option:s?",
376 .params = "[on|off]",
377 .help = "run emulation in singlestep mode or switch to normal mode",
378 .cmd = hmp_singlestep,
379 },
380
381 SRST
382 ``singlestep [off]``
383 Run the emulation in single step mode.
384 If called with option off, the emulation returns to normal mode.
385 ERST
386
387 {
388 .name = "stop",
389 .args_type = "",
390 .params = "",
391 .help = "stop emulation",
392 .cmd = hmp_stop,
393 },
394
395 SRST
396 ``stop``
397 Stop emulation.
398 ERST
399
400 {
401 .name = "c|cont",
402 .args_type = "",
403 .params = "",
404 .help = "resume emulation",
405 .cmd = hmp_cont,
406 },
407
408 SRST
409 ``c`` or ``cont``
410 Resume emulation.
411 ERST
412
413 {
414 .name = "system_wakeup",
415 .args_type = "",
416 .params = "",
417 .help = "wakeup guest from suspend",
418 .cmd = hmp_system_wakeup,
419 },
420
421 SRST
422 ``system_wakeup``
423 Wakeup guest from suspend.
424 ERST
425
426 {
427 .name = "gdbserver",
428 .args_type = "device:s?",
429 .params = "[device]",
430 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
431 .cmd = hmp_gdbserver,
432 },
433
434 SRST
435 ``gdbserver`` [*port*]
436 Start gdbserver session (default *port*\=1234)
437 ERST
438
439 {
440 .name = "x",
441 .args_type = "fmt:/,addr:l",
442 .params = "/fmt addr",
443 .help = "virtual memory dump starting at 'addr'",
444 .cmd = hmp_memory_dump,
445 },
446
447 SRST
448 ``x/``\ *fmt* *addr*
449 Virtual memory dump starting at *addr*.
450 ERST
451
452 {
453 .name = "xp",
454 .args_type = "fmt:/,addr:l",
455 .params = "/fmt addr",
456 .help = "physical memory dump starting at 'addr'",
457 .cmd = hmp_physical_memory_dump,
458 },
459
460 SRST
461 ``xp /``\ *fmt* *addr*
462 Physical memory dump starting at *addr*.
463
464 *fmt* is a format which tells the command how to format the
465 data. Its syntax is: ``/{count}{format}{size}``
466
467 *count*
468 is the number of items to be dumped.
469 *format*
470 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
471 c (char) or i (asm instruction).
472 *size*
473 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
474 ``h`` or ``w`` can be specified with the ``i`` format to
475 respectively select 16 or 32 bit code instruction size.
476
477 Examples:
478
479 Dump 10 instructions at the current instruction pointer::
480
481 (qemu) x/10i $eip
482 0x90107063: ret
483 0x90107064: sti
484 0x90107065: lea 0x0(%esi,1),%esi
485 0x90107069: lea 0x0(%edi,1),%edi
486 0x90107070: ret
487 0x90107071: jmp 0x90107080
488 0x90107073: nop
489 0x90107074: nop
490 0x90107075: nop
491 0x90107076: nop
492
493 Dump 80 16 bit values at the start of the video memory::
494
495 (qemu) xp/80hx 0xb8000
496 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
497 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
498 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
499 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
500 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
501 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
502 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
503 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
504 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
505 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
506
507 ERST
508
509 {
510 .name = "gpa2hva",
511 .args_type = "addr:l",
512 .params = "addr",
513 .help = "print the host virtual address corresponding to a guest physical address",
514 .cmd = hmp_gpa2hva,
515 },
516
517 SRST
518 ``gpa2hva`` *addr*
519 Print the host virtual address at which the guest's physical address *addr*
520 is mapped.
521 ERST
522
523 #ifdef CONFIG_LINUX
524 {
525 .name = "gpa2hpa",
526 .args_type = "addr:l",
527 .params = "addr",
528 .help = "print the host physical address corresponding to a guest physical address",
529 .cmd = hmp_gpa2hpa,
530 },
531 #endif
532
533 SRST
534 ``gpa2hpa`` *addr*
535 Print the host physical address at which the guest's physical address *addr*
536 is mapped.
537 ERST
538
539 {
540 .name = "gva2gpa",
541 .args_type = "addr:l",
542 .params = "addr",
543 .help = "print the guest physical address corresponding to a guest virtual address",
544 .cmd = hmp_gva2gpa,
545 },
546
547 SRST
548 ``gva2gpa`` *addr*
549 Print the guest physical address at which the guest's virtual address *addr*
550 is mapped based on the mapping for the current CPU.
551 ERST
552
553 {
554 .name = "p|print",
555 .args_type = "fmt:/,val:l",
556 .params = "/fmt expr",
557 .help = "print expression value (use $reg for CPU register access)",
558 .cmd = do_print,
559 },
560
561 SRST
562 ``p`` or ``print/``\ *fmt* *expr*
563 Print expression value. Only the *format* part of *fmt* is
564 used.
565 ERST
566
567 {
568 .name = "i",
569 .args_type = "fmt:/,addr:i,index:i.",
570 .params = "/fmt addr",
571 .help = "I/O port read",
572 .cmd = hmp_ioport_read,
573 },
574
575 SRST
576 ``i/``\ *fmt* *addr* [.\ *index*\ ]
577 Read I/O port.
578 ERST
579
580 {
581 .name = "o",
582 .args_type = "fmt:/,addr:i,val:i",
583 .params = "/fmt addr value",
584 .help = "I/O port write",
585 .cmd = hmp_ioport_write,
586 },
587
588 SRST
589 ``o/``\ *fmt* *addr* *val*
590 Write to I/O port.
591 ERST
592
593 {
594 .name = "sendkey",
595 .args_type = "keys:s,hold-time:i?",
596 .params = "keys [hold_ms]",
597 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
598 .cmd = hmp_sendkey,
599 .command_completion = sendkey_completion,
600 },
601
602 SRST
603 ``sendkey`` *keys*
604 Send *keys* to the guest. *keys* could be the name of the
605 key or the raw value in hexadecimal format. Use ``-`` to press
606 several keys simultaneously. Example::
607
608 sendkey ctrl-alt-f1
609
610 This command is useful to send keys that your graphical user interface
611 intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
612 ERST
613 {
614 .name = "sync-profile",
615 .args_type = "op:s?",
616 .params = "[on|off|reset]",
617 .help = "enable, disable or reset synchronization profiling. "
618 "With no arguments, prints whether profiling is on or off.",
619 .cmd = hmp_sync_profile,
620 },
621
622 SRST
623 ``sync-profile [on|off|reset]``
624 Enable, disable or reset synchronization profiling. With no arguments, prints
625 whether profiling is on or off.
626 ERST
627
628 {
629 .name = "system_reset",
630 .args_type = "",
631 .params = "",
632 .help = "reset the system",
633 .cmd = hmp_system_reset,
634 },
635
636 SRST
637 ``system_reset``
638 Reset the system.
639 ERST
640
641 {
642 .name = "system_powerdown",
643 .args_type = "",
644 .params = "",
645 .help = "send system power down event",
646 .cmd = hmp_system_powerdown,
647 },
648
649 SRST
650 ``system_powerdown``
651 Power down the system (if supported).
652 ERST
653
654 {
655 .name = "sum",
656 .args_type = "start:i,size:i",
657 .params = "addr size",
658 .help = "compute the checksum of a memory region",
659 .cmd = hmp_sum,
660 },
661
662 SRST
663 ``sum`` *addr* *size*
664 Compute the checksum of a memory region.
665 ERST
666
667 {
668 .name = "device_add",
669 .args_type = "device:O",
670 .params = "driver[,prop=value][,...]",
671 .help = "add device, like -device on the command line",
672 .cmd = hmp_device_add,
673 .command_completion = device_add_completion,
674 },
675
676 SRST
677 ``device_add`` *config*
678 Add device.
679 ERST
680
681 {
682 .name = "device_del",
683 .args_type = "id:s",
684 .params = "device",
685 .help = "remove device",
686 .cmd = hmp_device_del,
687 .command_completion = device_del_completion,
688 },
689
690 SRST
691 ``device_del`` *id*
692 Remove device *id*. *id* may be a short ID
693 or a QOM object path.
694 ERST
695
696 {
697 .name = "cpu",
698 .args_type = "index:i",
699 .params = "index",
700 .help = "set the default CPU",
701 .cmd = hmp_cpu,
702 },
703
704 SRST
705 ``cpu`` *index*
706 Set the default CPU.
707 ERST
708
709 {
710 .name = "mouse_move",
711 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
712 .params = "dx dy [dz]",
713 .help = "send mouse move events",
714 .cmd = hmp_mouse_move,
715 },
716
717 SRST
718 ``mouse_move`` *dx* *dy* [*dz*]
719 Move the active mouse to the specified coordinates *dx* *dy*
720 with optional scroll axis *dz*.
721 ERST
722
723 {
724 .name = "mouse_button",
725 .args_type = "button_state:i",
726 .params = "state",
727 .help = "change mouse button state (1=L, 2=M, 4=R)",
728 .cmd = hmp_mouse_button,
729 },
730
731 SRST
732 ``mouse_button`` *val*
733 Change the active mouse button state *val* (1=L, 2=M, 4=R).
734 ERST
735
736 {
737 .name = "mouse_set",
738 .args_type = "index:i",
739 .params = "index",
740 .help = "set which mouse device receives events",
741 .cmd = hmp_mouse_set,
742 },
743
744 SRST
745 ``mouse_set`` *index*
746 Set which mouse device receives events at given *index*, index
747 can be obtained with::
748
749 info mice
750
751 ERST
752
753 {
754 .name = "wavcapture",
755 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
756 .params = "path audiodev [frequency [bits [channels]]]",
757 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
758 .cmd = hmp_wavcapture,
759 },
760 SRST
761 ``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
762 Capture audio into *filename* from *audiodev*, using sample rate
763 *frequency* bits per sample *bits* and number of channels
764 *channels*.
765
766 Defaults:
767
768 - Sample rate = 44100 Hz - CD quality
769 - Bits = 16
770 - Number of channels = 2 - Stereo
771 ERST
772
773 {
774 .name = "stopcapture",
775 .args_type = "n:i",
776 .params = "capture index",
777 .help = "stop capture",
778 .cmd = hmp_stopcapture,
779 },
780 SRST
781 ``stopcapture`` *index*
782 Stop capture with a given *index*, index can be obtained with::
783
784 info capture
785
786 ERST
787
788 {
789 .name = "memsave",
790 .args_type = "val:l,size:i,filename:s",
791 .params = "addr size file",
792 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
793 .cmd = hmp_memsave,
794 },
795
796 SRST
797 ``memsave`` *addr* *size* *file*
798 save to disk virtual memory dump starting at *addr* of size *size*.
799 ERST
800
801 {
802 .name = "pmemsave",
803 .args_type = "val:l,size:i,filename:s",
804 .params = "addr size file",
805 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
806 .cmd = hmp_pmemsave,
807 },
808
809 SRST
810 ``pmemsave`` *addr* *size* *file*
811 save to disk physical memory dump starting at *addr* of size *size*.
812 ERST
813
814 {
815 .name = "boot_set",
816 .args_type = "bootdevice:s",
817 .params = "bootdevice",
818 .help = "define new values for the boot device list",
819 .cmd = hmp_boot_set,
820 },
821
822 SRST
823 ``boot_set`` *bootdevicelist*
824 Define new values for the boot device list. Those values will override
825 the values specified on the command line through the ``-boot`` option.
826
827 The values that can be specified here depend on the machine type, but are
828 the same that can be specified in the ``-boot`` command line option.
829 ERST
830
831 {
832 .name = "nmi",
833 .args_type = "",
834 .params = "",
835 .help = "inject an NMI",
836 .cmd = hmp_nmi,
837 },
838 SRST
839 ``nmi`` *cpu*
840 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
841 ERST
842
843 {
844 .name = "ringbuf_write",
845 .args_type = "device:s,data:s",
846 .params = "device data",
847 .help = "Write to a ring buffer character device",
848 .cmd = hmp_ringbuf_write,
849 .command_completion = ringbuf_write_completion,
850 },
851
852 SRST
853 ``ringbuf_write`` *device* *data*
854 Write *data* to ring buffer character device *device*.
855 *data* must be a UTF-8 string.
856 ERST
857
858 {
859 .name = "ringbuf_read",
860 .args_type = "device:s,size:i",
861 .params = "device size",
862 .help = "Read from a ring buffer character device",
863 .cmd = hmp_ringbuf_read,
864 .command_completion = ringbuf_write_completion,
865 },
866
867 SRST
868 ``ringbuf_read`` *device*
869 Read and print up to *size* bytes from ring buffer character
870 device *device*.
871 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
872 character code in hexadecimal. Character ``\`` is printed ``\\``.
873 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
874 NUL characters, after the ring buffer lost data, and when reading
875 stops because the size limit is reached.
876 ERST
877
878 {
879 .name = "announce_self",
880 .args_type = "interfaces:s?,id:s?",
881 .params = "[interfaces] [id]",
882 .help = "Trigger GARP/RARP announcements",
883 .cmd = hmp_announce_self,
884 },
885
886 SRST
887 ``announce_self``
888 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
889 updating the network infrastructure after a reconfiguration or some forms
890 of migration. The timings of the round are set by the migration announce
891 parameters. An optional comma separated *interfaces* list restricts the
892 announce to the named set of interfaces. An optional *id* can be used to
893 start a separate announce timer and to change the parameters of it later.
894 ERST
895
896 {
897 .name = "migrate",
898 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
899 .params = "[-d] [-b] [-i] [-r] uri",
900 .help = "migrate to URI (using -d to not wait for completion)"
901 "\n\t\t\t -b for migration without shared storage with"
902 " full copy of disk\n\t\t\t -i for migration without "
903 "shared storage with incremental copy of disk "
904 "(base image shared between src and destination)"
905 "\n\t\t\t -r to resume a paused migration",
906 .cmd = hmp_migrate,
907 },
908
909
910 SRST
911 ``migrate [-d] [-b] [-i]`` *uri*
912 Migrate to *uri* (using -d to not wait for completion).
913
914 ``-b``
915 for migration with full copy of disk
916 ``-i``
917 for migration with incremental copy of disk (base image is shared)
918 ERST
919
920 {
921 .name = "migrate_cancel",
922 .args_type = "",
923 .params = "",
924 .help = "cancel the current VM migration",
925 .cmd = hmp_migrate_cancel,
926 },
927
928 SRST
929 ``migrate_cancel``
930 Cancel the current VM migration.
931 ERST
932
933 {
934 .name = "migrate_continue",
935 .args_type = "state:s",
936 .params = "state",
937 .help = "Continue migration from the given paused state",
938 .cmd = hmp_migrate_continue,
939 },
940 SRST
941 ``migrate_continue`` *state*
942 Continue migration from the paused state *state*
943 ERST
944
945 {
946 .name = "migrate_incoming",
947 .args_type = "uri:s",
948 .params = "uri",
949 .help = "Continue an incoming migration from an -incoming defer",
950 .cmd = hmp_migrate_incoming,
951 },
952
953 SRST
954 ``migrate_incoming`` *uri*
955 Continue an incoming migration using the *uri* (that has the same syntax
956 as the ``-incoming`` option).
957 ERST
958
959 {
960 .name = "migrate_recover",
961 .args_type = "uri:s",
962 .params = "uri",
963 .help = "Continue a paused incoming postcopy migration",
964 .cmd = hmp_migrate_recover,
965 },
966
967 SRST
968 ``migrate_recover`` *uri*
969 Continue a paused incoming postcopy migration using the *uri*.
970 ERST
971
972 {
973 .name = "migrate_pause",
974 .args_type = "",
975 .params = "",
976 .help = "Pause an ongoing migration (postcopy-only)",
977 .cmd = hmp_migrate_pause,
978 },
979
980 SRST
981 ``migrate_pause``
982 Pause an ongoing migration. Currently it only supports postcopy.
983 ERST
984
985 {
986 .name = "migrate_set_cache_size",
987 .args_type = "value:o",
988 .params = "value",
989 .help = "set cache size (in bytes) for XBZRLE migrations,"
990 "the cache size will be rounded down to the nearest "
991 "power of 2.\n"
992 "The cache size affects the number of cache misses."
993 "In case of a high cache miss ratio you need to increase"
994 " the cache size",
995 .cmd = hmp_migrate_set_cache_size,
996 },
997
998 SRST
999 ``migrate_set_cache_size`` *value*
1000 Set cache size to *value* (in bytes) for xbzrle migrations.
1001 ERST
1002
1003 {
1004 .name = "migrate_set_speed",
1005 .args_type = "value:o",
1006 .params = "value",
1007 .help = "set maximum speed (in bytes) for migrations. "
1008 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1009 .cmd = hmp_migrate_set_speed,
1010 },
1011
1012 SRST
1013 ``migrate_set_speed`` *value*
1014 Set maximum speed to *value* (in bytes) for migrations.
1015 ERST
1016
1017 {
1018 .name = "migrate_set_downtime",
1019 .args_type = "value:T",
1020 .params = "value",
1021 .help = "set maximum tolerated downtime (in seconds) for migrations",
1022 .cmd = hmp_migrate_set_downtime,
1023 },
1024
1025 SRST
1026 ``migrate_set_downtime`` *second*
1027 Set maximum tolerated downtime (in seconds) for migration.
1028 ERST
1029
1030 {
1031 .name = "migrate_set_capability",
1032 .args_type = "capability:s,state:b",
1033 .params = "capability state",
1034 .help = "Enable/Disable the usage of a capability for migration",
1035 .cmd = hmp_migrate_set_capability,
1036 .command_completion = migrate_set_capability_completion,
1037 },
1038
1039 SRST
1040 ``migrate_set_capability`` *capability* *state*
1041 Enable/Disable the usage of a capability *capability* for migration.
1042 ERST
1043
1044 {
1045 .name = "migrate_set_parameter",
1046 .args_type = "parameter:s,value:s",
1047 .params = "parameter value",
1048 .help = "Set the parameter for migration",
1049 .cmd = hmp_migrate_set_parameter,
1050 .command_completion = migrate_set_parameter_completion,
1051 },
1052
1053 SRST
1054 ``migrate_set_parameter`` *parameter* *value*
1055 Set the parameter *parameter* for migration.
1056 ERST
1057
1058 {
1059 .name = "migrate_start_postcopy",
1060 .args_type = "",
1061 .params = "",
1062 .help = "Followup to a migration command to switch the migration"
1063 " to postcopy mode. The postcopy-ram capability must "
1064 "be set on both source and destination before the "
1065 "original migration command .",
1066 .cmd = hmp_migrate_start_postcopy,
1067 },
1068
1069 SRST
1070 ``migrate_start_postcopy``
1071 Switch in-progress migration to postcopy mode. Ignored after the end of
1072 migration (or once already in postcopy).
1073 ERST
1074
1075 {
1076 .name = "x_colo_lost_heartbeat",
1077 .args_type = "",
1078 .params = "",
1079 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1080 "a failover or takeover is needed.",
1081 .cmd = hmp_x_colo_lost_heartbeat,
1082 },
1083
1084 SRST
1085 ``x_colo_lost_heartbeat``
1086 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1087 ERST
1088
1089 {
1090 .name = "client_migrate_info",
1091 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1092 .params = "protocol hostname port tls-port cert-subject",
1093 .help = "set migration information for remote display",
1094 .cmd = hmp_client_migrate_info,
1095 },
1096
1097 SRST
1098 ``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1099 Set migration information for remote display. This makes the server
1100 ask the client to automatically reconnect using the new parameters
1101 once migration finished successfully. Only implemented for SPICE.
1102 ERST
1103
1104 {
1105 .name = "dump-guest-memory",
1106 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1107 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1108 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1109 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1110 "-d: return immediately (do not wait for completion).\n\t\t\t"
1111 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1112 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1113 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1114 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1115 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1116 "begin: the starting physical address.\n\t\t\t"
1117 "length: the memory size, in bytes.",
1118 .cmd = hmp_dump_guest_memory,
1119 },
1120
1121 SRST
1122 ``dump-guest-memory [-p]`` *filename* *begin* *length*
1123 \
1124 ``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1125 Dump guest memory to *protocol*. The file can be processed with crash or
1126 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1127
1128 ``-p``
1129 do paging to get guest's memory mapping.
1130 ``-z``
1131 dump in kdump-compressed format, with zlib compression.
1132 ``-l``
1133 dump in kdump-compressed format, with lzo compression.
1134 ``-s``
1135 dump in kdump-compressed format, with snappy compression.
1136 ``-w``
1137 dump in Windows crashdump format (can be used instead of ELF-dump converting),
1138 for Windows x64 guests with vmcoreinfo driver only
1139 *filename*
1140 dump file name.
1141 *begin*
1142 the starting physical address. It's optional, and should be
1143 specified together with *length*.
1144 *length*
1145 the memory size, in bytes. It's optional, and should be specified
1146 together with *begin*.
1147
1148 ERST
1149
1150 #if defined(TARGET_S390X)
1151 {
1152 .name = "dump-skeys",
1153 .args_type = "filename:F",
1154 .params = "",
1155 .help = "Save guest storage keys into file 'filename'.\n",
1156 .cmd = hmp_dump_skeys,
1157 },
1158 #endif
1159
1160 SRST
1161 ``dump-skeys`` *filename*
1162 Save guest storage keys to a file.
1163 ERST
1164
1165 #if defined(TARGET_S390X)
1166 {
1167 .name = "migration_mode",
1168 .args_type = "mode:i",
1169 .params = "mode",
1170 .help = "Enables or disables migration mode\n",
1171 .cmd = hmp_migrationmode,
1172 },
1173 #endif
1174
1175 SRST
1176 ``migration_mode`` *mode*
1177 Enables or disables migration mode.
1178 ERST
1179
1180 {
1181 .name = "snapshot_blkdev",
1182 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1183 .params = "[-n] device [new-image-file] [format]",
1184 .help = "initiates a live snapshot\n\t\t\t"
1185 "of device. If a new image file is specified, the\n\t\t\t"
1186 "new image file will become the new root image.\n\t\t\t"
1187 "If format is specified, the snapshot file will\n\t\t\t"
1188 "be created in that format.\n\t\t\t"
1189 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1190 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1191 "recreating it from scratch.",
1192 .cmd = hmp_snapshot_blkdev,
1193 },
1194
1195 SRST
1196 ``snapshot_blkdev``
1197 Snapshot device, using snapshot file as target if provided
1198 ERST
1199
1200 {
1201 .name = "snapshot_blkdev_internal",
1202 .args_type = "device:B,name:s",
1203 .params = "device name",
1204 .help = "take an internal snapshot of device.\n\t\t\t"
1205 "The format of the image used by device must\n\t\t\t"
1206 "support it, such as qcow2.\n\t\t\t",
1207 .cmd = hmp_snapshot_blkdev_internal,
1208 },
1209
1210 SRST
1211 ``snapshot_blkdev_internal``
1212 Take an internal snapshot on device if it support
1213 ERST
1214
1215 {
1216 .name = "snapshot_delete_blkdev_internal",
1217 .args_type = "device:B,name:s,id:s?",
1218 .params = "device name [id]",
1219 .help = "delete an internal snapshot of device.\n\t\t\t"
1220 "If id is specified, qemu will try delete\n\t\t\t"
1221 "the snapshot matching both id and name.\n\t\t\t"
1222 "The format of the image used by device must\n\t\t\t"
1223 "support it, such as qcow2.\n\t\t\t",
1224 .cmd = hmp_snapshot_delete_blkdev_internal,
1225 },
1226
1227 SRST
1228 ``snapshot_delete_blkdev_internal``
1229 Delete an internal snapshot on device if it support
1230 ERST
1231
1232 {
1233 .name = "drive_mirror",
1234 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1235 .params = "[-n] [-f] device target [format]",
1236 .help = "initiates live storage\n\t\t\t"
1237 "migration for a device. The device's contents are\n\t\t\t"
1238 "copied to the new image file, including data that\n\t\t\t"
1239 "is written after the command is started.\n\t\t\t"
1240 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1241 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1242 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1243 "so that the result does not need a backing file.\n\t\t\t",
1244 .cmd = hmp_drive_mirror,
1245 },
1246 SRST
1247 ``drive_mirror``
1248 Start mirroring a block device's writes to a new destination,
1249 using the specified target.
1250 ERST
1251
1252 {
1253 .name = "drive_backup",
1254 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1255 .params = "[-n] [-f] [-c] device target [format]",
1256 .help = "initiates a point-in-time\n\t\t\t"
1257 "copy for a device. The device's contents are\n\t\t\t"
1258 "copied to the new image file, excluding data that\n\t\t\t"
1259 "is written after the command is started.\n\t\t\t"
1260 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1261 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1262 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1263 "so that the result does not need a backing file.\n\t\t\t"
1264 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1265 "(if the target format supports it).\n\t\t\t",
1266 .cmd = hmp_drive_backup,
1267 },
1268 SRST
1269 ``drive_backup``
1270 Start a point-in-time copy of a block device to a specificed target.
1271 ERST
1272
1273 {
1274 .name = "drive_add",
1275 .args_type = "node:-n,pci_addr:s,opts:s",
1276 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1277 "[file=file][,if=type][,bus=n]\n"
1278 "[,unit=m][,media=d][,index=i]\n"
1279 "[,snapshot=on|off][,cache=on|off]\n"
1280 "[,readonly=on|off][,copy-on-read=on|off]",
1281 .help = "add drive to PCI storage controller",
1282 .cmd = hmp_drive_add,
1283 },
1284
1285 SRST
1286 ``drive_add``
1287 Add drive to PCI storage controller.
1288 ERST
1289
1290 {
1291 .name = "pcie_aer_inject_error",
1292 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1293 "id:s,error_status:s,"
1294 "header0:i?,header1:i?,header2:i?,header3:i?,"
1295 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1296 .params = "[-a] [-c] id "
1297 "<error_status> [<tlp header> [<tlp header prefix>]]",
1298 .help = "inject pcie aer error\n\t\t\t"
1299 " -a for advisory non fatal error\n\t\t\t"
1300 " -c for correctable error\n\t\t\t"
1301 "<id> = qdev device id\n\t\t\t"
1302 "<error_status> = error string or 32bit\n\t\t\t"
1303 "<tlb header> = 32bit x 4\n\t\t\t"
1304 "<tlb header prefix> = 32bit x 4",
1305 .cmd = hmp_pcie_aer_inject_error,
1306 },
1307
1308 SRST
1309 ``pcie_aer_inject_error``
1310 Inject PCIe AER error
1311 ERST
1312
1313 {
1314 .name = "netdev_add",
1315 .args_type = "netdev:O",
1316 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1317 .help = "add host network device",
1318 .cmd = hmp_netdev_add,
1319 .command_completion = netdev_add_completion,
1320 },
1321
1322 SRST
1323 ``netdev_add``
1324 Add host network device.
1325 ERST
1326
1327 {
1328 .name = "netdev_del",
1329 .args_type = "id:s",
1330 .params = "id",
1331 .help = "remove host network device",
1332 .cmd = hmp_netdev_del,
1333 .command_completion = netdev_del_completion,
1334 },
1335
1336 SRST
1337 ``netdev_del``
1338 Remove host network device.
1339 ERST
1340
1341 {
1342 .name = "object_add",
1343 .args_type = "object:O",
1344 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1345 .help = "create QOM object",
1346 .cmd = hmp_object_add,
1347 .command_completion = object_add_completion,
1348 },
1349
1350 SRST
1351 ``object_add``
1352 Create QOM object.
1353 ERST
1354
1355 {
1356 .name = "object_del",
1357 .args_type = "id:s",
1358 .params = "id",
1359 .help = "destroy QOM object",
1360 .cmd = hmp_object_del,
1361 .command_completion = object_del_completion,
1362 },
1363
1364 SRST
1365 ``object_del``
1366 Destroy QOM object.
1367 ERST
1368
1369 #ifdef CONFIG_SLIRP
1370 {
1371 .name = "hostfwd_add",
1372 .args_type = "arg1:s,arg2:s?",
1373 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1374 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1375 .cmd = hmp_hostfwd_add,
1376 },
1377 #endif
1378 SRST
1379 ``hostfwd_add``
1380 Redirect TCP or UDP connections from host to guest (requires -net user).
1381 ERST
1382
1383 #ifdef CONFIG_SLIRP
1384 {
1385 .name = "hostfwd_remove",
1386 .args_type = "arg1:s,arg2:s?",
1387 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1388 .help = "remove host-to-guest TCP or UDP redirection",
1389 .cmd = hmp_hostfwd_remove,
1390 },
1391
1392 #endif
1393 SRST
1394 ``hostfwd_remove``
1395 Remove host-to-guest TCP or UDP redirection.
1396 ERST
1397
1398 {
1399 .name = "balloon",
1400 .args_type = "value:M",
1401 .params = "target",
1402 .help = "request VM to change its memory allocation (in MB)",
1403 .cmd = hmp_balloon,
1404 },
1405
1406 SRST
1407 ``balloon`` *value*
1408 Request VM to change its memory allocation to *value* (in MB).
1409 ERST
1410
1411 {
1412 .name = "set_link",
1413 .args_type = "name:s,up:b",
1414 .params = "name on|off",
1415 .help = "change the link status of a network adapter",
1416 .cmd = hmp_set_link,
1417 .command_completion = set_link_completion,
1418 },
1419
1420 SRST
1421 ``set_link`` *name* ``[on|off]``
1422 Switch link *name* on (i.e. up) or off (i.e. down).
1423 ERST
1424
1425 {
1426 .name = "watchdog_action",
1427 .args_type = "action:s",
1428 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1429 .help = "change watchdog action",
1430 .cmd = hmp_watchdog_action,
1431 .command_completion = watchdog_action_completion,
1432 },
1433
1434 SRST
1435 ``watchdog_action``
1436 Change watchdog action.
1437 ERST
1438
1439 {
1440 .name = "acl_show",
1441 .args_type = "aclname:s",
1442 .params = "aclname",
1443 .help = "list rules in the access control list",
1444 .cmd = hmp_acl_show,
1445 },
1446
1447 SRST
1448 ``acl_show`` *aclname*
1449 List all the matching rules in the access control list, and the default
1450 policy. There are currently two named access control lists,
1451 *vnc.x509dname* and *vnc.username* matching on the x509 client
1452 certificate distinguished name, and SASL username respectively.
1453 ERST
1454
1455 {
1456 .name = "acl_policy",
1457 .args_type = "aclname:s,policy:s",
1458 .params = "aclname allow|deny",
1459 .help = "set default access control list policy",
1460 .cmd = hmp_acl_policy,
1461 },
1462
1463 SRST
1464 ``acl_policy`` *aclname* ``allow|deny``
1465 Set the default access control list policy, used in the event that
1466 none of the explicit rules match. The default policy at startup is
1467 always ``deny``.
1468 ERST
1469
1470 {
1471 .name = "acl_add",
1472 .args_type = "aclname:s,match:s,policy:s,index:i?",
1473 .params = "aclname match allow|deny [index]",
1474 .help = "add a match rule to the access control list",
1475 .cmd = hmp_acl_add,
1476 },
1477
1478 SRST
1479 ``acl_add`` *aclname* *match* ``allow|deny`` [*index*]
1480 Add a match rule to the access control list, allowing or denying access.
1481 The match will normally be an exact username or x509 distinguished name,
1482 but can optionally include wildcard globs. eg ``*@EXAMPLE.COM`` to
1483 allow all users in the ``EXAMPLE.COM`` kerberos realm. The match will
1484 normally be appended to the end of the ACL, but can be inserted
1485 earlier in the list if the optional *index* parameter is supplied.
1486 ERST
1487
1488 {
1489 .name = "acl_remove",
1490 .args_type = "aclname:s,match:s",
1491 .params = "aclname match",
1492 .help = "remove a match rule from the access control list",
1493 .cmd = hmp_acl_remove,
1494 },
1495
1496 SRST
1497 ``acl_remove`` *aclname* *match*
1498 Remove the specified match rule from the access control list.
1499 ERST
1500
1501 {
1502 .name = "acl_reset",
1503 .args_type = "aclname:s",
1504 .params = "aclname",
1505 .help = "reset the access control list",
1506 .cmd = hmp_acl_reset,
1507 },
1508
1509 SRST
1510 ``acl_reset`` *aclname*
1511 Remove all matches from the access control list, and set the default
1512 policy back to ``deny``.
1513 ERST
1514
1515 {
1516 .name = "nbd_server_start",
1517 .args_type = "all:-a,writable:-w,uri:s",
1518 .params = "nbd_server_start [-a] [-w] host:port",
1519 .help = "serve block devices on the given host and port",
1520 .cmd = hmp_nbd_server_start,
1521 },
1522 SRST
1523 ``nbd_server_start`` *host*:*port*
1524 Start an NBD server on the given host and/or port. If the ``-a``
1525 option is included, all of the virtual machine's block devices that
1526 have an inserted media on them are automatically exported; in this case,
1527 the ``-w`` option makes the devices writable too.
1528 ERST
1529
1530 {
1531 .name = "nbd_server_add",
1532 .args_type = "writable:-w,device:B,name:s?",
1533 .params = "nbd_server_add [-w] device [name]",
1534 .help = "export a block device via NBD",
1535 .cmd = hmp_nbd_server_add,
1536 },
1537 SRST
1538 ``nbd_server_add`` *device* [ *name* ]
1539 Export a block device through QEMU's NBD server, which must be started
1540 beforehand with ``nbd_server_start``. The ``-w`` option makes the
1541 exported device writable too. The export name is controlled by *name*,
1542 defaulting to *device*.
1543 ERST
1544
1545 {
1546 .name = "nbd_server_remove",
1547 .args_type = "force:-f,name:s",
1548 .params = "nbd_server_remove [-f] name",
1549 .help = "remove an export previously exposed via NBD",
1550 .cmd = hmp_nbd_server_remove,
1551 },
1552 SRST
1553 ``nbd_server_remove [-f]`` *name*
1554 Stop exporting a block device through QEMU's NBD server, which was
1555 previously started with ``nbd_server_add``. The ``-f``
1556 option forces the server to drop the export immediately even if
1557 clients are connected; otherwise the command fails unless there are no
1558 clients.
1559 ERST
1560
1561 {
1562 .name = "nbd_server_stop",
1563 .args_type = "",
1564 .params = "nbd_server_stop",
1565 .help = "stop serving block devices using the NBD protocol",
1566 .cmd = hmp_nbd_server_stop,
1567 },
1568 SRST
1569 ``nbd_server_stop``
1570 Stop the QEMU embedded NBD server.
1571 ERST
1572
1573
1574 #if defined(TARGET_I386)
1575
1576 {
1577 .name = "mce",
1578 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1579 .params = "[-b] cpu bank status mcgstatus addr misc",
1580 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1581 .cmd = hmp_mce,
1582 },
1583
1584 #endif
1585 SRST
1586 ``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1587 Inject an MCE on the given CPU (x86 only).
1588 ERST
1589
1590 {
1591 .name = "getfd",
1592 .args_type = "fdname:s",
1593 .params = "getfd name",
1594 .help = "receive a file descriptor via SCM rights and assign it a name",
1595 .cmd = hmp_getfd,
1596 },
1597
1598 SRST
1599 ``getfd`` *fdname*
1600 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1601 mechanism on unix sockets, it is stored using the name *fdname* for
1602 later use by other monitor commands.
1603 ERST
1604
1605 {
1606 .name = "closefd",
1607 .args_type = "fdname:s",
1608 .params = "closefd name",
1609 .help = "close a file descriptor previously passed via SCM rights",
1610 .cmd = hmp_closefd,
1611 },
1612
1613 SRST
1614 ``closefd`` *fdname*
1615 Close the file descriptor previously assigned to *fdname* using the
1616 ``getfd`` command. This is only needed if the file descriptor was never
1617 used by another monitor command.
1618 ERST
1619
1620 {
1621 .name = "block_passwd",
1622 .args_type = "device:B,password:s",
1623 .params = "block_passwd device password",
1624 .help = "set the password of encrypted block devices",
1625 .cmd = hmp_block_passwd,
1626 },
1627
1628 SRST
1629 ``block_passwd`` *device* *password*
1630 Set the encrypted device *device* password to *password*
1631
1632 This command is now obsolete and will always return an error since 2.10
1633 ERST
1634
1635 {
1636 .name = "block_set_io_throttle",
1637 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1638 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1639 .help = "change I/O throttle limits for a block drive",
1640 .cmd = hmp_block_set_io_throttle,
1641 },
1642
1643 SRST
1644 ``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1645 Change I/O throttle limits for a block drive to
1646 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1647 *device* can be a block device name, a qdev ID or a QOM path.
1648 ERST
1649
1650 {
1651 .name = "set_password",
1652 .args_type = "protocol:s,password:s,connected:s?",
1653 .params = "protocol password action-if-connected",
1654 .help = "set spice/vnc password",
1655 .cmd = hmp_set_password,
1656 },
1657
1658 SRST
1659 ``set_password [ vnc | spice ] password [ action-if-connected ]``
1660 Change spice/vnc password. Use zero to make the password stay valid
1661 forever. *action-if-connected* specifies what should happen in
1662 case a connection is established: *fail* makes the password change
1663 fail. *disconnect* changes the password and disconnects the
1664 client. *keep* changes the password and keeps the connection up.
1665 *keep* is the default.
1666 ERST
1667
1668 {
1669 .name = "expire_password",
1670 .args_type = "protocol:s,time:s",
1671 .params = "protocol time",
1672 .help = "set spice/vnc password expire-time",
1673 .cmd = hmp_expire_password,
1674 },
1675
1676 SRST
1677 ``expire_password [ vnc | spice ]`` *expire-time*
1678 Specify when a password for spice/vnc becomes
1679 invalid. *expire-time* accepts:
1680
1681 ``now``
1682 Invalidate password instantly.
1683 ``never``
1684 Password stays valid forever.
1685 ``+``\ *nsec*
1686 Password stays valid for *nsec* seconds starting now.
1687 *nsec*
1688 Password is invalidated at the given time. *nsec* are the seconds
1689 passed since 1970, i.e. unix epoch.
1690
1691 ERST
1692
1693 {
1694 .name = "chardev-add",
1695 .args_type = "args:s",
1696 .params = "args",
1697 .help = "add chardev",
1698 .cmd = hmp_chardev_add,
1699 .command_completion = chardev_add_completion,
1700 },
1701
1702 SRST
1703 ``chardev-add`` *args*
1704 chardev-add accepts the same parameters as the -chardev command line switch.
1705 ERST
1706
1707 {
1708 .name = "chardev-change",
1709 .args_type = "id:s,args:s",
1710 .params = "id args",
1711 .help = "change chardev",
1712 .cmd = hmp_chardev_change,
1713 },
1714
1715 SRST
1716 ``chardev-change`` *args*
1717 chardev-change accepts existing chardev *id* and then the same arguments
1718 as the -chardev command line switch (except for "id").
1719 ERST
1720
1721 {
1722 .name = "chardev-remove",
1723 .args_type = "id:s",
1724 .params = "id",
1725 .help = "remove chardev",
1726 .cmd = hmp_chardev_remove,
1727 .command_completion = chardev_remove_completion,
1728 },
1729
1730 SRST
1731 ``chardev-remove`` *id*
1732 Removes the chardev *id*.
1733 ERST
1734
1735 {
1736 .name = "chardev-send-break",
1737 .args_type = "id:s",
1738 .params = "id",
1739 .help = "send a break on chardev",
1740 .cmd = hmp_chardev_send_break,
1741 .command_completion = chardev_remove_completion,
1742 },
1743
1744 SRST
1745 ``chardev-send-break`` *id*
1746 Send a break on the chardev *id*.
1747 ERST
1748
1749 {
1750 .name = "qemu-io",
1751 .args_type = "qdev:-d,device:B,command:s",
1752 .params = "[-d] [device] \"[command]\"",
1753 .help = "run a qemu-io command on a block device\n\t\t\t"
1754 "-d: [device] is a device ID rather than a "
1755 "drive ID or node name",
1756 .cmd = hmp_qemu_io,
1757 },
1758
1759 SRST
1760 ``qemu-io`` *device* *command*
1761 Executes a qemu-io command on the given block device.
1762 ERST
1763
1764 {
1765 .name = "cpu-add",
1766 .args_type = "id:i",
1767 .params = "id",
1768 .help = "add cpu (deprecated, use device_add instead)",
1769 .cmd = hmp_cpu_add,
1770 },
1771
1772 SRST
1773 ``cpu-add`` *id*
1774 Add CPU with id *id*. This command is deprecated, please
1775 +use ``device_add`` instead. For details, refer to
1776 'docs/cpu-hotplug.rst'.
1777 ERST
1778
1779 {
1780 .name = "qom-list",
1781 .args_type = "path:s?",
1782 .params = "path",
1783 .help = "list QOM properties",
1784 .cmd = hmp_qom_list,
1785 .flags = "p",
1786 },
1787
1788 SRST
1789 ``qom-list`` [*path*]
1790 Print QOM properties of object at location *path*
1791 ERST
1792
1793 {
1794 .name = "qom-set",
1795 .args_type = "path:s,property:s,value:s",
1796 .params = "path property value",
1797 .help = "set QOM property",
1798 .cmd = hmp_qom_set,
1799 .flags = "p",
1800 },
1801
1802 SRST
1803 ``qom-set`` *path* *property* *value*
1804 Set QOM property *property* of object at location *path* to value *value*
1805 ERST
1806
1807 {
1808 .name = "info",
1809 .args_type = "item:s?",
1810 .params = "[subcommand]",
1811 .help = "show various information about the system state",
1812 .cmd = hmp_info_help,
1813 .sub_table = hmp_info_cmds,
1814 .flags = "p",
1815 },
1816