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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 .coroutine = true,
80 },
81
82 SRST
83 ``block_resize``
84 Resize a block image while a guest is running. Usually requires guest
85 action to see the updated size. Resize to a lower size is supported,
86 but should be used with extreme caution. Note that this command only
87 resizes image files, it can not resize block devices like LVM volumes.
88 ERST
89
90 {
91 .name = "block_stream",
92 .args_type = "device:B,speed:o?,base:s?",
93 .params = "device [speed [base]]",
94 .help = "copy data from a backing file into a block device",
95 .cmd = hmp_block_stream,
96 },
97
98 SRST
99 ``block_stream``
100 Copy data from a backing file into a block device.
101 ERST
102
103 {
104 .name = "block_job_set_speed",
105 .args_type = "device:B,speed:o",
106 .params = "device speed",
107 .help = "set maximum speed for a background block operation",
108 .cmd = hmp_block_job_set_speed,
109 },
110
111 SRST
112 ``block_job_set_speed``
113 Set maximum speed for a background block operation.
114 ERST
115
116 {
117 .name = "block_job_cancel",
118 .args_type = "force:-f,device:B",
119 .params = "[-f] device",
120 .help = "stop an active background block operation (use -f"
121 "\n\t\t\t if you want to abort the operation immediately"
122 "\n\t\t\t instead of keep running until data is in sync)",
123 .cmd = hmp_block_job_cancel,
124 },
125
126 SRST
127 ``block_job_cancel``
128 Stop an active background block operation (streaming, mirroring).
129 ERST
130
131 {
132 .name = "block_job_complete",
133 .args_type = "device:B",
134 .params = "device",
135 .help = "stop an active background block operation",
136 .cmd = hmp_block_job_complete,
137 },
138
139 SRST
140 ``block_job_complete``
141 Manually trigger completion of an active background block operation.
142 For mirroring, this will switch the device to the destination path.
143 ERST
144
145 {
146 .name = "block_job_pause",
147 .args_type = "device:B",
148 .params = "device",
149 .help = "pause an active background block operation",
150 .cmd = hmp_block_job_pause,
151 },
152
153 SRST
154 ``block_job_pause``
155 Pause an active block streaming operation.
156 ERST
157
158 {
159 .name = "block_job_resume",
160 .args_type = "device:B",
161 .params = "device",
162 .help = "resume a paused background block operation",
163 .cmd = hmp_block_job_resume,
164 },
165
166 SRST
167 ``block_job_resume``
168 Resume a paused block streaming operation.
169 ERST
170
171 {
172 .name = "eject",
173 .args_type = "force:-f,device:B",
174 .params = "[-f] device",
175 .help = "eject a removable medium (use -f to force it)",
176 .cmd = hmp_eject,
177 },
178
179 SRST
180 ``eject [-f]`` *device*
181 Eject a removable medium (use -f to force it).
182 ERST
183
184 {
185 .name = "drive_del",
186 .args_type = "id:B",
187 .params = "device",
188 .help = "remove host block device",
189 .cmd = hmp_drive_del,
190 },
191
192 SRST
193 ``drive_del`` *device*
194 Remove host block device. The result is that guest generated IO is no longer
195 submitted against the host device underlying the disk. Once a drive has
196 been deleted, the QEMU Block layer returns -EIO which results in IO
197 errors in the guest for applications that are reading/writing to the device.
198 These errors are always reported to the guest, regardless of the drive's error
199 actions (drive options rerror, werror).
200 ERST
201
202 {
203 .name = "change",
204 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
205 .params = "device filename [format [read-only-mode]]",
206 .help = "change a removable medium, optional format",
207 .cmd = hmp_change,
208 },
209
210 SRST
211 ``change`` *device* *setting*
212 Change the configuration of a device.
213
214 ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]]
215 Change the medium for a removable disk device to point to *filename*. eg::
216
217 (qemu) change ide1-cd0 /path/to/some.iso
218
219 *format* is optional.
220
221 *read-only-mode* may be used to change the read-only status of the device.
222 It accepts the following values:
223
224 retain
225 Retains the current status; this is the default.
226
227 read-only
228 Makes the device read-only.
229
230 read-write
231 Makes the device writable.
232
233 ``change vnc`` *display*,\ *options*
234 Change the configuration of the VNC server. The valid syntax for *display*
235 and *options* are described at :ref:`sec_005finvocation`. eg::
236
237 (qemu) change vnc localhost:1
238
239 ``change vnc password`` [*password*]
240
241 Change the password associated with the VNC server. If the new password
242 is not supplied, the monitor will prompt for it to be entered. VNC
243 passwords are only significant up to 8 letters. eg::
244
245 (qemu) change vnc password
246 Password: ********
247
248 ERST
249
250 {
251 .name = "screendump",
252 .args_type = "filename:F,device:s?,head:i?",
253 .params = "filename [device [head]]",
254 .help = "save screen from head 'head' of display device 'device' "
255 "into PPM image 'filename'",
256 .cmd = hmp_screendump,
257 .coroutine = true,
258 },
259
260 SRST
261 ``screendump`` *filename*
262 Save screen into PPM image *filename*.
263 ERST
264
265 {
266 .name = "logfile",
267 .args_type = "filename:F",
268 .params = "filename",
269 .help = "output logs to 'filename'",
270 .cmd = hmp_logfile,
271 },
272
273 SRST
274 ``logfile`` *filename*
275 Output logs to *filename*.
276 ERST
277
278 {
279 .name = "trace-event",
280 .args_type = "name:s,option:b,vcpu:i?",
281 .params = "name on|off [vcpu]",
282 .help = "changes status of a specific trace event "
283 "(vcpu: vCPU to set, default is all)",
284 .cmd = hmp_trace_event,
285 .command_completion = trace_event_completion,
286 },
287
288 SRST
289 ``trace-event``
290 changes status of a trace event
291 ERST
292
293 #if defined(CONFIG_TRACE_SIMPLE)
294 {
295 .name = "trace-file",
296 .args_type = "op:s?,arg:F?",
297 .params = "on|off|flush|set [arg]",
298 .help = "open, close, or flush trace file, or set a new file name",
299 .cmd = hmp_trace_file,
300 },
301
302 SRST
303 ``trace-file on|off|flush``
304 Open, close, or flush the trace file. If no argument is given, the
305 status of the trace file is displayed.
306 ERST
307 #endif
308
309 {
310 .name = "log",
311 .args_type = "items:s",
312 .params = "item1[,...]",
313 .help = "activate logging of the specified items",
314 .cmd = hmp_log,
315 },
316
317 SRST
318 ``log`` *item1*\ [,...]
319 Activate logging of the specified items.
320 ERST
321
322 {
323 .name = "savevm",
324 .args_type = "name:s?",
325 .params = "tag",
326 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created",
327 .cmd = hmp_savevm,
328 },
329
330 SRST
331 ``savevm`` *tag*
332 Create a snapshot of the whole virtual machine. If *tag* is
333 provided, it is used as human readable identifier. If there is already
334 a snapshot with the same tag, it is replaced. More info at
335 :ref:`vm_005fsnapshots`.
336
337 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
338 only *tag* as parameter.
339 ERST
340
341 {
342 .name = "loadvm",
343 .args_type = "name:s",
344 .params = "tag",
345 .help = "restore a VM snapshot from its tag",
346 .cmd = hmp_loadvm,
347 .command_completion = loadvm_completion,
348 },
349
350 SRST
351 ``loadvm`` *tag*
352 Set the whole virtual machine to the snapshot identified by the tag
353 *tag*.
354
355 Since 4.0, loadvm stopped accepting snapshot id as parameter.
356 ERST
357
358 {
359 .name = "delvm",
360 .args_type = "name:s",
361 .params = "tag",
362 .help = "delete a VM snapshot from its tag",
363 .cmd = hmp_delvm,
364 .command_completion = delvm_completion,
365 },
366
367 SRST
368 ``delvm`` *tag*
369 Delete the snapshot identified by *tag*.
370
371 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
372 only *tag* as parameter.
373 ERST
374
375 {
376 .name = "singlestep",
377 .args_type = "option:s?",
378 .params = "[on|off]",
379 .help = "run emulation in singlestep mode or switch to normal mode",
380 .cmd = hmp_singlestep,
381 },
382
383 SRST
384 ``singlestep [off]``
385 Run the emulation in single step mode.
386 If called with option off, the emulation returns to normal mode.
387 ERST
388
389 {
390 .name = "stop",
391 .args_type = "",
392 .params = "",
393 .help = "stop emulation",
394 .cmd = hmp_stop,
395 },
396
397 SRST
398 ``stop``
399 Stop emulation.
400 ERST
401
402 {
403 .name = "c|cont",
404 .args_type = "",
405 .params = "",
406 .help = "resume emulation",
407 .cmd = hmp_cont,
408 },
409
410 SRST
411 ``c`` or ``cont``
412 Resume emulation.
413 ERST
414
415 {
416 .name = "system_wakeup",
417 .args_type = "",
418 .params = "",
419 .help = "wakeup guest from suspend",
420 .cmd = hmp_system_wakeup,
421 },
422
423 SRST
424 ``system_wakeup``
425 Wakeup guest from suspend.
426 ERST
427
428 {
429 .name = "gdbserver",
430 .args_type = "device:s?",
431 .params = "[device]",
432 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
433 .cmd = hmp_gdbserver,
434 },
435
436 SRST
437 ``gdbserver`` [*port*]
438 Start gdbserver session (default *port*\=1234)
439 ERST
440
441 {
442 .name = "x",
443 .args_type = "fmt:/,addr:l",
444 .params = "/fmt addr",
445 .help = "virtual memory dump starting at 'addr'",
446 .cmd = hmp_memory_dump,
447 },
448
449 SRST
450 ``x/``\ *fmt* *addr*
451 Virtual memory dump starting at *addr*.
452 ERST
453
454 {
455 .name = "xp",
456 .args_type = "fmt:/,addr:l",
457 .params = "/fmt addr",
458 .help = "physical memory dump starting at 'addr'",
459 .cmd = hmp_physical_memory_dump,
460 },
461
462 SRST
463 ``xp /``\ *fmt* *addr*
464 Physical memory dump starting at *addr*.
465
466 *fmt* is a format which tells the command how to format the
467 data. Its syntax is: ``/{count}{format}{size}``
468
469 *count*
470 is the number of items to be dumped.
471 *format*
472 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
473 c (char) or i (asm instruction).
474 *size*
475 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
476 ``h`` or ``w`` can be specified with the ``i`` format to
477 respectively select 16 or 32 bit code instruction size.
478
479 Examples:
480
481 Dump 10 instructions at the current instruction pointer::
482
483 (qemu) x/10i $eip
484 0x90107063: ret
485 0x90107064: sti
486 0x90107065: lea 0x0(%esi,1),%esi
487 0x90107069: lea 0x0(%edi,1),%edi
488 0x90107070: ret
489 0x90107071: jmp 0x90107080
490 0x90107073: nop
491 0x90107074: nop
492 0x90107075: nop
493 0x90107076: nop
494
495 Dump 80 16 bit values at the start of the video memory::
496
497 (qemu) xp/80hx 0xb8000
498 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
499 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
500 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
501 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
502 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
503 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
504 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
505 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
506 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
507 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
508
509 ERST
510
511 {
512 .name = "gpa2hva",
513 .args_type = "addr:l",
514 .params = "addr",
515 .help = "print the host virtual address corresponding to a guest physical address",
516 .cmd = hmp_gpa2hva,
517 },
518
519 SRST
520 ``gpa2hva`` *addr*
521 Print the host virtual address at which the guest's physical address *addr*
522 is mapped.
523 ERST
524
525 #ifdef CONFIG_LINUX
526 {
527 .name = "gpa2hpa",
528 .args_type = "addr:l",
529 .params = "addr",
530 .help = "print the host physical address corresponding to a guest physical address",
531 .cmd = hmp_gpa2hpa,
532 },
533 #endif
534
535 SRST
536 ``gpa2hpa`` *addr*
537 Print the host physical address at which the guest's physical address *addr*
538 is mapped.
539 ERST
540
541 {
542 .name = "gva2gpa",
543 .args_type = "addr:l",
544 .params = "addr",
545 .help = "print the guest physical address corresponding to a guest virtual address",
546 .cmd = hmp_gva2gpa,
547 },
548
549 SRST
550 ``gva2gpa`` *addr*
551 Print the guest physical address at which the guest's virtual address *addr*
552 is mapped based on the mapping for the current CPU.
553 ERST
554
555 {
556 .name = "p|print",
557 .args_type = "fmt:/,val:l",
558 .params = "/fmt expr",
559 .help = "print expression value (use $reg for CPU register access)",
560 .cmd = do_print,
561 },
562
563 SRST
564 ``p`` or ``print/``\ *fmt* *expr*
565 Print expression value. Only the *format* part of *fmt* is
566 used.
567 ERST
568
569 {
570 .name = "i",
571 .args_type = "fmt:/,addr:i,index:i.",
572 .params = "/fmt addr",
573 .help = "I/O port read",
574 .cmd = hmp_ioport_read,
575 },
576
577 SRST
578 ``i/``\ *fmt* *addr* [.\ *index*\ ]
579 Read I/O port.
580 ERST
581
582 {
583 .name = "o",
584 .args_type = "fmt:/,addr:i,val:i",
585 .params = "/fmt addr value",
586 .help = "I/O port write",
587 .cmd = hmp_ioport_write,
588 },
589
590 SRST
591 ``o/``\ *fmt* *addr* *val*
592 Write to I/O port.
593 ERST
594
595 {
596 .name = "sendkey",
597 .args_type = "keys:s,hold-time:i?",
598 .params = "keys [hold_ms]",
599 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
600 .cmd = hmp_sendkey,
601 .command_completion = sendkey_completion,
602 },
603
604 SRST
605 ``sendkey`` *keys*
606 Send *keys* to the guest. *keys* could be the name of the
607 key or the raw value in hexadecimal format. Use ``-`` to press
608 several keys simultaneously. Example::
609
610 sendkey ctrl-alt-f1
611
612 This command is useful to send keys that your graphical user interface
613 intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
614 ERST
615 {
616 .name = "sync-profile",
617 .args_type = "op:s?",
618 .params = "[on|off|reset]",
619 .help = "enable, disable or reset synchronization profiling. "
620 "With no arguments, prints whether profiling is on or off.",
621 .cmd = hmp_sync_profile,
622 },
623
624 SRST
625 ``sync-profile [on|off|reset]``
626 Enable, disable or reset synchronization profiling. With no arguments, prints
627 whether profiling is on or off.
628 ERST
629
630 {
631 .name = "system_reset",
632 .args_type = "",
633 .params = "",
634 .help = "reset the system",
635 .cmd = hmp_system_reset,
636 },
637
638 SRST
639 ``system_reset``
640 Reset the system.
641 ERST
642
643 {
644 .name = "system_powerdown",
645 .args_type = "",
646 .params = "",
647 .help = "send system power down event",
648 .cmd = hmp_system_powerdown,
649 },
650
651 SRST
652 ``system_powerdown``
653 Power down the system (if supported).
654 ERST
655
656 {
657 .name = "sum",
658 .args_type = "start:i,size:i",
659 .params = "addr size",
660 .help = "compute the checksum of a memory region",
661 .cmd = hmp_sum,
662 },
663
664 SRST
665 ``sum`` *addr* *size*
666 Compute the checksum of a memory region.
667 ERST
668
669 {
670 .name = "device_add",
671 .args_type = "device:O",
672 .params = "driver[,prop=value][,...]",
673 .help = "add device, like -device on the command line",
674 .cmd = hmp_device_add,
675 .command_completion = device_add_completion,
676 },
677
678 SRST
679 ``device_add`` *config*
680 Add device.
681 ERST
682
683 {
684 .name = "device_del",
685 .args_type = "id:s",
686 .params = "device",
687 .help = "remove device",
688 .cmd = hmp_device_del,
689 .command_completion = device_del_completion,
690 },
691
692 SRST
693 ``device_del`` *id*
694 Remove device *id*. *id* may be a short ID
695 or a QOM object path.
696 ERST
697
698 {
699 .name = "cpu",
700 .args_type = "index:i",
701 .params = "index",
702 .help = "set the default CPU",
703 .cmd = hmp_cpu,
704 },
705
706 SRST
707 ``cpu`` *index*
708 Set the default CPU.
709 ERST
710
711 {
712 .name = "mouse_move",
713 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
714 .params = "dx dy [dz]",
715 .help = "send mouse move events",
716 .cmd = hmp_mouse_move,
717 },
718
719 SRST
720 ``mouse_move`` *dx* *dy* [*dz*]
721 Move the active mouse to the specified coordinates *dx* *dy*
722 with optional scroll axis *dz*.
723 ERST
724
725 {
726 .name = "mouse_button",
727 .args_type = "button_state:i",
728 .params = "state",
729 .help = "change mouse button state (1=L, 2=M, 4=R)",
730 .cmd = hmp_mouse_button,
731 },
732
733 SRST
734 ``mouse_button`` *val*
735 Change the active mouse button state *val* (1=L, 2=M, 4=R).
736 ERST
737
738 {
739 .name = "mouse_set",
740 .args_type = "index:i",
741 .params = "index",
742 .help = "set which mouse device receives events",
743 .cmd = hmp_mouse_set,
744 },
745
746 SRST
747 ``mouse_set`` *index*
748 Set which mouse device receives events at given *index*, index
749 can be obtained with::
750
751 info mice
752
753 ERST
754
755 {
756 .name = "wavcapture",
757 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
758 .params = "path audiodev [frequency [bits [channels]]]",
759 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
760 .cmd = hmp_wavcapture,
761 },
762 SRST
763 ``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
764 Capture audio into *filename* from *audiodev*, using sample rate
765 *frequency* bits per sample *bits* and number of channels
766 *channels*.
767
768 Defaults:
769
770 - Sample rate = 44100 Hz - CD quality
771 - Bits = 16
772 - Number of channels = 2 - Stereo
773 ERST
774
775 {
776 .name = "stopcapture",
777 .args_type = "n:i",
778 .params = "capture index",
779 .help = "stop capture",
780 .cmd = hmp_stopcapture,
781 },
782 SRST
783 ``stopcapture`` *index*
784 Stop capture with a given *index*, index can be obtained with::
785
786 info capture
787
788 ERST
789
790 {
791 .name = "memsave",
792 .args_type = "val:l,size:i,filename:s",
793 .params = "addr size file",
794 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
795 .cmd = hmp_memsave,
796 },
797
798 SRST
799 ``memsave`` *addr* *size* *file*
800 save to disk virtual memory dump starting at *addr* of size *size*.
801 ERST
802
803 {
804 .name = "pmemsave",
805 .args_type = "val:l,size:i,filename:s",
806 .params = "addr size file",
807 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
808 .cmd = hmp_pmemsave,
809 },
810
811 SRST
812 ``pmemsave`` *addr* *size* *file*
813 save to disk physical memory dump starting at *addr* of size *size*.
814 ERST
815
816 {
817 .name = "boot_set",
818 .args_type = "bootdevice:s",
819 .params = "bootdevice",
820 .help = "define new values for the boot device list",
821 .cmd = hmp_boot_set,
822 },
823
824 SRST
825 ``boot_set`` *bootdevicelist*
826 Define new values for the boot device list. Those values will override
827 the values specified on the command line through the ``-boot`` option.
828
829 The values that can be specified here depend on the machine type, but are
830 the same that can be specified in the ``-boot`` command line option.
831 ERST
832
833 {
834 .name = "nmi",
835 .args_type = "",
836 .params = "",
837 .help = "inject an NMI",
838 .cmd = hmp_nmi,
839 },
840 SRST
841 ``nmi`` *cpu*
842 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
843 ERST
844
845 {
846 .name = "ringbuf_write",
847 .args_type = "device:s,data:s",
848 .params = "device data",
849 .help = "Write to a ring buffer character device",
850 .cmd = hmp_ringbuf_write,
851 .command_completion = ringbuf_write_completion,
852 },
853
854 SRST
855 ``ringbuf_write`` *device* *data*
856 Write *data* to ring buffer character device *device*.
857 *data* must be a UTF-8 string.
858 ERST
859
860 {
861 .name = "ringbuf_read",
862 .args_type = "device:s,size:i",
863 .params = "device size",
864 .help = "Read from a ring buffer character device",
865 .cmd = hmp_ringbuf_read,
866 .command_completion = ringbuf_write_completion,
867 },
868
869 SRST
870 ``ringbuf_read`` *device*
871 Read and print up to *size* bytes from ring buffer character
872 device *device*.
873 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
874 character code in hexadecimal. Character ``\`` is printed ``\\``.
875 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
876 NUL characters, after the ring buffer lost data, and when reading
877 stops because the size limit is reached.
878 ERST
879
880 {
881 .name = "announce_self",
882 .args_type = "interfaces:s?,id:s?",
883 .params = "[interfaces] [id]",
884 .help = "Trigger GARP/RARP announcements",
885 .cmd = hmp_announce_self,
886 },
887
888 SRST
889 ``announce_self``
890 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
891 updating the network infrastructure after a reconfiguration or some forms
892 of migration. The timings of the round are set by the migration announce
893 parameters. An optional comma separated *interfaces* list restricts the
894 announce to the named set of interfaces. An optional *id* can be used to
895 start a separate announce timer and to change the parameters of it later.
896 ERST
897
898 {
899 .name = "migrate",
900 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
901 .params = "[-d] [-b] [-i] [-r] uri",
902 .help = "migrate to URI (using -d to not wait for completion)"
903 "\n\t\t\t -b for migration without shared storage with"
904 " full copy of disk\n\t\t\t -i for migration without "
905 "shared storage with incremental copy of disk "
906 "(base image shared between src and destination)"
907 "\n\t\t\t -r to resume a paused migration",
908 .cmd = hmp_migrate,
909 },
910
911
912 SRST
913 ``migrate [-d] [-b] [-i]`` *uri*
914 Migrate to *uri* (using -d to not wait for completion).
915
916 ``-b``
917 for migration with full copy of disk
918 ``-i``
919 for migration with incremental copy of disk (base image is shared)
920 ERST
921
922 {
923 .name = "migrate_cancel",
924 .args_type = "",
925 .params = "",
926 .help = "cancel the current VM migration",
927 .cmd = hmp_migrate_cancel,
928 },
929
930 SRST
931 ``migrate_cancel``
932 Cancel the current VM migration.
933 ERST
934
935 {
936 .name = "migrate_continue",
937 .args_type = "state:s",
938 .params = "state",
939 .help = "Continue migration from the given paused state",
940 .cmd = hmp_migrate_continue,
941 },
942 SRST
943 ``migrate_continue`` *state*
944 Continue migration from the paused state *state*
945 ERST
946
947 {
948 .name = "migrate_incoming",
949 .args_type = "uri:s",
950 .params = "uri",
951 .help = "Continue an incoming migration from an -incoming defer",
952 .cmd = hmp_migrate_incoming,
953 },
954
955 SRST
956 ``migrate_incoming`` *uri*
957 Continue an incoming migration using the *uri* (that has the same syntax
958 as the ``-incoming`` option).
959 ERST
960
961 {
962 .name = "migrate_recover",
963 .args_type = "uri:s",
964 .params = "uri",
965 .help = "Continue a paused incoming postcopy migration",
966 .cmd = hmp_migrate_recover,
967 },
968
969 SRST
970 ``migrate_recover`` *uri*
971 Continue a paused incoming postcopy migration using the *uri*.
972 ERST
973
974 {
975 .name = "migrate_pause",
976 .args_type = "",
977 .params = "",
978 .help = "Pause an ongoing migration (postcopy-only)",
979 .cmd = hmp_migrate_pause,
980 },
981
982 SRST
983 ``migrate_pause``
984 Pause an ongoing migration. Currently it only supports postcopy.
985 ERST
986
987 {
988 .name = "migrate_set_cache_size",
989 .args_type = "value:o",
990 .params = "value",
991 .help = "set cache size (in bytes) for XBZRLE migrations,"
992 "the cache size will be rounded down to the nearest "
993 "power of 2.\n"
994 "The cache size affects the number of cache misses."
995 "In case of a high cache miss ratio you need to increase"
996 " the cache size",
997 .cmd = hmp_migrate_set_cache_size,
998 },
999
1000 SRST
1001 ``migrate_set_cache_size`` *value*
1002 Set cache size to *value* (in bytes) for xbzrle migrations.
1003 ERST
1004
1005 {
1006 .name = "migrate_set_speed",
1007 .args_type = "value:o",
1008 .params = "value",
1009 .help = "set maximum speed (in bytes) for migrations. "
1010 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1011 .cmd = hmp_migrate_set_speed,
1012 },
1013
1014 SRST
1015 ``migrate_set_speed`` *value*
1016 Set maximum speed to *value* (in bytes) for migrations.
1017 ERST
1018
1019 {
1020 .name = "migrate_set_downtime",
1021 .args_type = "value:T",
1022 .params = "value",
1023 .help = "set maximum tolerated downtime (in seconds) for migrations",
1024 .cmd = hmp_migrate_set_downtime,
1025 },
1026
1027 SRST
1028 ``migrate_set_downtime`` *second*
1029 Set maximum tolerated downtime (in seconds) for migration.
1030 ERST
1031
1032 {
1033 .name = "migrate_set_capability",
1034 .args_type = "capability:s,state:b",
1035 .params = "capability state",
1036 .help = "Enable/Disable the usage of a capability for migration",
1037 .cmd = hmp_migrate_set_capability,
1038 .command_completion = migrate_set_capability_completion,
1039 },
1040
1041 SRST
1042 ``migrate_set_capability`` *capability* *state*
1043 Enable/Disable the usage of a capability *capability* for migration.
1044 ERST
1045
1046 {
1047 .name = "migrate_set_parameter",
1048 .args_type = "parameter:s,value:s",
1049 .params = "parameter value",
1050 .help = "Set the parameter for migration",
1051 .cmd = hmp_migrate_set_parameter,
1052 .command_completion = migrate_set_parameter_completion,
1053 },
1054
1055 SRST
1056 ``migrate_set_parameter`` *parameter* *value*
1057 Set the parameter *parameter* for migration.
1058 ERST
1059
1060 {
1061 .name = "migrate_start_postcopy",
1062 .args_type = "",
1063 .params = "",
1064 .help = "Followup to a migration command to switch the migration"
1065 " to postcopy mode. The postcopy-ram capability must "
1066 "be set on both source and destination before the "
1067 "original migration command .",
1068 .cmd = hmp_migrate_start_postcopy,
1069 },
1070
1071 SRST
1072 ``migrate_start_postcopy``
1073 Switch in-progress migration to postcopy mode. Ignored after the end of
1074 migration (or once already in postcopy).
1075 ERST
1076
1077 {
1078 .name = "x_colo_lost_heartbeat",
1079 .args_type = "",
1080 .params = "",
1081 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1082 "a failover or takeover is needed.",
1083 .cmd = hmp_x_colo_lost_heartbeat,
1084 },
1085
1086 SRST
1087 ``x_colo_lost_heartbeat``
1088 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1089 ERST
1090
1091 {
1092 .name = "client_migrate_info",
1093 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1094 .params = "protocol hostname port tls-port cert-subject",
1095 .help = "set migration information for remote display",
1096 .cmd = hmp_client_migrate_info,
1097 },
1098
1099 SRST
1100 ``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1101 Set migration information for remote display. This makes the server
1102 ask the client to automatically reconnect using the new parameters
1103 once migration finished successfully. Only implemented for SPICE.
1104 ERST
1105
1106 {
1107 .name = "dump-guest-memory",
1108 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1109 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1110 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1111 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1112 "-d: return immediately (do not wait for completion).\n\t\t\t"
1113 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1114 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1115 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1116 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1117 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1118 "begin: the starting physical address.\n\t\t\t"
1119 "length: the memory size, in bytes.",
1120 .cmd = hmp_dump_guest_memory,
1121 },
1122
1123 SRST
1124 ``dump-guest-memory [-p]`` *filename* *begin* *length*
1125 \
1126 ``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1127 Dump guest memory to *protocol*. The file can be processed with crash or
1128 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1129
1130 ``-p``
1131 do paging to get guest's memory mapping.
1132 ``-z``
1133 dump in kdump-compressed format, with zlib compression.
1134 ``-l``
1135 dump in kdump-compressed format, with lzo compression.
1136 ``-s``
1137 dump in kdump-compressed format, with snappy compression.
1138 ``-w``
1139 dump in Windows crashdump format (can be used instead of ELF-dump converting),
1140 for Windows x64 guests with vmcoreinfo driver only
1141 *filename*
1142 dump file name.
1143 *begin*
1144 the starting physical address. It's optional, and should be
1145 specified together with *length*.
1146 *length*
1147 the memory size, in bytes. It's optional, and should be specified
1148 together with *begin*.
1149
1150 ERST
1151
1152 #if defined(TARGET_S390X)
1153 {
1154 .name = "dump-skeys",
1155 .args_type = "filename:F",
1156 .params = "",
1157 .help = "Save guest storage keys into file 'filename'.\n",
1158 .cmd = hmp_dump_skeys,
1159 },
1160 #endif
1161
1162 SRST
1163 ``dump-skeys`` *filename*
1164 Save guest storage keys to a file.
1165 ERST
1166
1167 #if defined(TARGET_S390X)
1168 {
1169 .name = "migration_mode",
1170 .args_type = "mode:i",
1171 .params = "mode",
1172 .help = "Enables or disables migration mode\n",
1173 .cmd = hmp_migrationmode,
1174 },
1175 #endif
1176
1177 SRST
1178 ``migration_mode`` *mode*
1179 Enables or disables migration mode.
1180 ERST
1181
1182 {
1183 .name = "snapshot_blkdev",
1184 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1185 .params = "[-n] device [new-image-file] [format]",
1186 .help = "initiates a live snapshot\n\t\t\t"
1187 "of device. If a new image file is specified, the\n\t\t\t"
1188 "new image file will become the new root image.\n\t\t\t"
1189 "If format is specified, the snapshot file will\n\t\t\t"
1190 "be created in that format.\n\t\t\t"
1191 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1192 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1193 "recreating it from scratch.",
1194 .cmd = hmp_snapshot_blkdev,
1195 },
1196
1197 SRST
1198 ``snapshot_blkdev``
1199 Snapshot device, using snapshot file as target if provided
1200 ERST
1201
1202 {
1203 .name = "snapshot_blkdev_internal",
1204 .args_type = "device:B,name:s",
1205 .params = "device name",
1206 .help = "take an internal snapshot of device.\n\t\t\t"
1207 "The format of the image used by device must\n\t\t\t"
1208 "support it, such as qcow2.\n\t\t\t",
1209 .cmd = hmp_snapshot_blkdev_internal,
1210 },
1211
1212 SRST
1213 ``snapshot_blkdev_internal``
1214 Take an internal snapshot on device if it support
1215 ERST
1216
1217 {
1218 .name = "snapshot_delete_blkdev_internal",
1219 .args_type = "device:B,name:s,id:s?",
1220 .params = "device name [id]",
1221 .help = "delete an internal snapshot of device.\n\t\t\t"
1222 "If id is specified, qemu will try delete\n\t\t\t"
1223 "the snapshot matching both id and name.\n\t\t\t"
1224 "The format of the image used by device must\n\t\t\t"
1225 "support it, such as qcow2.\n\t\t\t",
1226 .cmd = hmp_snapshot_delete_blkdev_internal,
1227 },
1228
1229 SRST
1230 ``snapshot_delete_blkdev_internal``
1231 Delete an internal snapshot on device if it support
1232 ERST
1233
1234 {
1235 .name = "drive_mirror",
1236 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1237 .params = "[-n] [-f] device target [format]",
1238 .help = "initiates live storage\n\t\t\t"
1239 "migration for a device. The device's contents are\n\t\t\t"
1240 "copied to the new image file, including data that\n\t\t\t"
1241 "is written after the command is started.\n\t\t\t"
1242 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1243 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1244 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1245 "so that the result does not need a backing file.\n\t\t\t",
1246 .cmd = hmp_drive_mirror,
1247 },
1248 SRST
1249 ``drive_mirror``
1250 Start mirroring a block device's writes to a new destination,
1251 using the specified target.
1252 ERST
1253
1254 {
1255 .name = "drive_backup",
1256 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1257 .params = "[-n] [-f] [-c] device target [format]",
1258 .help = "initiates a point-in-time\n\t\t\t"
1259 "copy for a device. The device's contents are\n\t\t\t"
1260 "copied to the new image file, excluding data that\n\t\t\t"
1261 "is written after the command is started.\n\t\t\t"
1262 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1263 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1264 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1265 "so that the result does not need a backing file.\n\t\t\t"
1266 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1267 "(if the target format supports it).\n\t\t\t",
1268 .cmd = hmp_drive_backup,
1269 },
1270 SRST
1271 ``drive_backup``
1272 Start a point-in-time copy of a block device to a specified target.
1273 ERST
1274
1275 {
1276 .name = "drive_add",
1277 .args_type = "node:-n,pci_addr:s,opts:s",
1278 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1279 "[file=file][,if=type][,bus=n]\n"
1280 "[,unit=m][,media=d][,index=i]\n"
1281 "[,snapshot=on|off][,cache=on|off]\n"
1282 "[,readonly=on|off][,copy-on-read=on|off]",
1283 .help = "add drive to PCI storage controller",
1284 .cmd = hmp_drive_add,
1285 },
1286
1287 SRST
1288 ``drive_add``
1289 Add drive to PCI storage controller.
1290 ERST
1291
1292 {
1293 .name = "pcie_aer_inject_error",
1294 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1295 "id:s,error_status:s,"
1296 "header0:i?,header1:i?,header2:i?,header3:i?,"
1297 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1298 .params = "[-a] [-c] id "
1299 "<error_status> [<tlp header> [<tlp header prefix>]]",
1300 .help = "inject pcie aer error\n\t\t\t"
1301 " -a for advisory non fatal error\n\t\t\t"
1302 " -c for correctable error\n\t\t\t"
1303 "<id> = qdev device id\n\t\t\t"
1304 "<error_status> = error string or 32bit\n\t\t\t"
1305 "<tlp header> = 32bit x 4\n\t\t\t"
1306 "<tlp header prefix> = 32bit x 4",
1307 .cmd = hmp_pcie_aer_inject_error,
1308 },
1309
1310 SRST
1311 ``pcie_aer_inject_error``
1312 Inject PCIe AER error
1313 ERST
1314
1315 {
1316 .name = "netdev_add",
1317 .args_type = "netdev:O",
1318 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1319 .help = "add host network device",
1320 .cmd = hmp_netdev_add,
1321 .command_completion = netdev_add_completion,
1322 },
1323
1324 SRST
1325 ``netdev_add``
1326 Add host network device.
1327 ERST
1328
1329 {
1330 .name = "netdev_del",
1331 .args_type = "id:s",
1332 .params = "id",
1333 .help = "remove host network device",
1334 .cmd = hmp_netdev_del,
1335 .command_completion = netdev_del_completion,
1336 },
1337
1338 SRST
1339 ``netdev_del``
1340 Remove host network device.
1341 ERST
1342
1343 {
1344 .name = "object_add",
1345 .args_type = "object:O",
1346 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1347 .help = "create QOM object",
1348 .cmd = hmp_object_add,
1349 .command_completion = object_add_completion,
1350 },
1351
1352 SRST
1353 ``object_add``
1354 Create QOM object.
1355 ERST
1356
1357 {
1358 .name = "object_del",
1359 .args_type = "id:s",
1360 .params = "id",
1361 .help = "destroy QOM object",
1362 .cmd = hmp_object_del,
1363 .command_completion = object_del_completion,
1364 },
1365
1366 SRST
1367 ``object_del``
1368 Destroy QOM object.
1369 ERST
1370
1371 #ifdef CONFIG_SLIRP
1372 {
1373 .name = "hostfwd_add",
1374 .args_type = "arg1:s,arg2:s?",
1375 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1376 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1377 .cmd = hmp_hostfwd_add,
1378 },
1379 #endif
1380 SRST
1381 ``hostfwd_add``
1382 Redirect TCP or UDP connections from host to guest (requires -net user).
1383 ERST
1384
1385 #ifdef CONFIG_SLIRP
1386 {
1387 .name = "hostfwd_remove",
1388 .args_type = "arg1:s,arg2:s?",
1389 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1390 .help = "remove host-to-guest TCP or UDP redirection",
1391 .cmd = hmp_hostfwd_remove,
1392 },
1393
1394 #endif
1395 SRST
1396 ``hostfwd_remove``
1397 Remove host-to-guest TCP or UDP redirection.
1398 ERST
1399
1400 {
1401 .name = "balloon",
1402 .args_type = "value:M",
1403 .params = "target",
1404 .help = "request VM to change its memory allocation (in MB)",
1405 .cmd = hmp_balloon,
1406 },
1407
1408 SRST
1409 ``balloon`` *value*
1410 Request VM to change its memory allocation to *value* (in MB).
1411 ERST
1412
1413 {
1414 .name = "set_link",
1415 .args_type = "name:s,up:b",
1416 .params = "name on|off",
1417 .help = "change the link status of a network adapter",
1418 .cmd = hmp_set_link,
1419 .command_completion = set_link_completion,
1420 },
1421
1422 SRST
1423 ``set_link`` *name* ``[on|off]``
1424 Switch link *name* on (i.e. up) or off (i.e. down).
1425 ERST
1426
1427 {
1428 .name = "watchdog_action",
1429 .args_type = "action:s",
1430 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1431 .help = "change watchdog action",
1432 .cmd = hmp_watchdog_action,
1433 .command_completion = watchdog_action_completion,
1434 },
1435
1436 SRST
1437 ``watchdog_action``
1438 Change watchdog action.
1439 ERST
1440
1441 {
1442 .name = "acl_show",
1443 .args_type = "aclname:s",
1444 .params = "aclname",
1445 .help = "list rules in the access control list",
1446 .cmd = hmp_acl_show,
1447 },
1448
1449 SRST
1450 ``acl_show`` *aclname*
1451 List all the matching rules in the access control list, and the default
1452 policy. There are currently two named access control lists,
1453 *vnc.x509dname* and *vnc.username* matching on the x509 client
1454 certificate distinguished name, and SASL username respectively.
1455 ERST
1456
1457 {
1458 .name = "acl_policy",
1459 .args_type = "aclname:s,policy:s",
1460 .params = "aclname allow|deny",
1461 .help = "set default access control list policy",
1462 .cmd = hmp_acl_policy,
1463 },
1464
1465 SRST
1466 ``acl_policy`` *aclname* ``allow|deny``
1467 Set the default access control list policy, used in the event that
1468 none of the explicit rules match. The default policy at startup is
1469 always ``deny``.
1470 ERST
1471
1472 {
1473 .name = "acl_add",
1474 .args_type = "aclname:s,match:s,policy:s,index:i?",
1475 .params = "aclname match allow|deny [index]",
1476 .help = "add a match rule to the access control list",
1477 .cmd = hmp_acl_add,
1478 },
1479
1480 SRST
1481 ``acl_add`` *aclname* *match* ``allow|deny`` [*index*]
1482 Add a match rule to the access control list, allowing or denying access.
1483 The match will normally be an exact username or x509 distinguished name,
1484 but can optionally include wildcard globs. eg ``*@EXAMPLE.COM`` to
1485 allow all users in the ``EXAMPLE.COM`` kerberos realm. The match will
1486 normally be appended to the end of the ACL, but can be inserted
1487 earlier in the list if the optional *index* parameter is supplied.
1488 ERST
1489
1490 {
1491 .name = "acl_remove",
1492 .args_type = "aclname:s,match:s",
1493 .params = "aclname match",
1494 .help = "remove a match rule from the access control list",
1495 .cmd = hmp_acl_remove,
1496 },
1497
1498 SRST
1499 ``acl_remove`` *aclname* *match*
1500 Remove the specified match rule from the access control list.
1501 ERST
1502
1503 {
1504 .name = "acl_reset",
1505 .args_type = "aclname:s",
1506 .params = "aclname",
1507 .help = "reset the access control list",
1508 .cmd = hmp_acl_reset,
1509 },
1510
1511 SRST
1512 ``acl_reset`` *aclname*
1513 Remove all matches from the access control list, and set the default
1514 policy back to ``deny``.
1515 ERST
1516
1517 {
1518 .name = "nbd_server_start",
1519 .args_type = "all:-a,writable:-w,uri:s",
1520 .params = "nbd_server_start [-a] [-w] host:port",
1521 .help = "serve block devices on the given host and port",
1522 .cmd = hmp_nbd_server_start,
1523 },
1524 SRST
1525 ``nbd_server_start`` *host*:*port*
1526 Start an NBD server on the given host and/or port. If the ``-a``
1527 option is included, all of the virtual machine's block devices that
1528 have an inserted media on them are automatically exported; in this case,
1529 the ``-w`` option makes the devices writable too.
1530 ERST
1531
1532 {
1533 .name = "nbd_server_add",
1534 .args_type = "writable:-w,device:B,name:s?",
1535 .params = "nbd_server_add [-w] device [name]",
1536 .help = "export a block device via NBD",
1537 .cmd = hmp_nbd_server_add,
1538 },
1539 SRST
1540 ``nbd_server_add`` *device* [ *name* ]
1541 Export a block device through QEMU's NBD server, which must be started
1542 beforehand with ``nbd_server_start``. The ``-w`` option makes the
1543 exported device writable too. The export name is controlled by *name*,
1544 defaulting to *device*.
1545 ERST
1546
1547 {
1548 .name = "nbd_server_remove",
1549 .args_type = "force:-f,name:s",
1550 .params = "nbd_server_remove [-f] name",
1551 .help = "remove an export previously exposed via NBD",
1552 .cmd = hmp_nbd_server_remove,
1553 },
1554 SRST
1555 ``nbd_server_remove [-f]`` *name*
1556 Stop exporting a block device through QEMU's NBD server, which was
1557 previously started with ``nbd_server_add``. The ``-f``
1558 option forces the server to drop the export immediately even if
1559 clients are connected; otherwise the command fails unless there are no
1560 clients.
1561 ERST
1562
1563 {
1564 .name = "nbd_server_stop",
1565 .args_type = "",
1566 .params = "nbd_server_stop",
1567 .help = "stop serving block devices using the NBD protocol",
1568 .cmd = hmp_nbd_server_stop,
1569 },
1570 SRST
1571 ``nbd_server_stop``
1572 Stop the QEMU embedded NBD server.
1573 ERST
1574
1575
1576 #if defined(TARGET_I386)
1577
1578 {
1579 .name = "mce",
1580 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1581 .params = "[-b] cpu bank status mcgstatus addr misc",
1582 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1583 .cmd = hmp_mce,
1584 },
1585
1586 #endif
1587 SRST
1588 ``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1589 Inject an MCE on the given CPU (x86 only).
1590 ERST
1591
1592 {
1593 .name = "getfd",
1594 .args_type = "fdname:s",
1595 .params = "getfd name",
1596 .help = "receive a file descriptor via SCM rights and assign it a name",
1597 .cmd = hmp_getfd,
1598 },
1599
1600 SRST
1601 ``getfd`` *fdname*
1602 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1603 mechanism on unix sockets, it is stored using the name *fdname* for
1604 later use by other monitor commands.
1605 ERST
1606
1607 {
1608 .name = "closefd",
1609 .args_type = "fdname:s",
1610 .params = "closefd name",
1611 .help = "close a file descriptor previously passed via SCM rights",
1612 .cmd = hmp_closefd,
1613 },
1614
1615 SRST
1616 ``closefd`` *fdname*
1617 Close the file descriptor previously assigned to *fdname* using the
1618 ``getfd`` command. This is only needed if the file descriptor was never
1619 used by another monitor command.
1620 ERST
1621
1622 {
1623 .name = "block_passwd",
1624 .args_type = "device:B,password:s",
1625 .params = "block_passwd device password",
1626 .help = "set the password of encrypted block devices",
1627 .cmd = hmp_block_passwd,
1628 },
1629
1630 SRST
1631 ``block_passwd`` *device* *password*
1632 Set the encrypted device *device* password to *password*
1633
1634 This command is now obsolete and will always return an error since 2.10
1635 ERST
1636
1637 {
1638 .name = "block_set_io_throttle",
1639 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1640 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1641 .help = "change I/O throttle limits for a block drive",
1642 .cmd = hmp_block_set_io_throttle,
1643 },
1644
1645 SRST
1646 ``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1647 Change I/O throttle limits for a block drive to
1648 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1649 *device* can be a block device name, a qdev ID or a QOM path.
1650 ERST
1651
1652 {
1653 .name = "set_password",
1654 .args_type = "protocol:s,password:s,connected:s?",
1655 .params = "protocol password action-if-connected",
1656 .help = "set spice/vnc password",
1657 .cmd = hmp_set_password,
1658 },
1659
1660 SRST
1661 ``set_password [ vnc | spice ] password [ action-if-connected ]``
1662 Change spice/vnc password. Use zero to make the password stay valid
1663 forever. *action-if-connected* specifies what should happen in
1664 case a connection is established: *fail* makes the password change
1665 fail. *disconnect* changes the password and disconnects the
1666 client. *keep* changes the password and keeps the connection up.
1667 *keep* is the default.
1668 ERST
1669
1670 {
1671 .name = "expire_password",
1672 .args_type = "protocol:s,time:s",
1673 .params = "protocol time",
1674 .help = "set spice/vnc password expire-time",
1675 .cmd = hmp_expire_password,
1676 },
1677
1678 SRST
1679 ``expire_password [ vnc | spice ]`` *expire-time*
1680 Specify when a password for spice/vnc becomes
1681 invalid. *expire-time* accepts:
1682
1683 ``now``
1684 Invalidate password instantly.
1685 ``never``
1686 Password stays valid forever.
1687 ``+``\ *nsec*
1688 Password stays valid for *nsec* seconds starting now.
1689 *nsec*
1690 Password is invalidated at the given time. *nsec* are the seconds
1691 passed since 1970, i.e. unix epoch.
1692
1693 ERST
1694
1695 {
1696 .name = "chardev-add",
1697 .args_type = "args:s",
1698 .params = "args",
1699 .help = "add chardev",
1700 .cmd = hmp_chardev_add,
1701 .command_completion = chardev_add_completion,
1702 },
1703
1704 SRST
1705 ``chardev-add`` *args*
1706 chardev-add accepts the same parameters as the -chardev command line switch.
1707 ERST
1708
1709 {
1710 .name = "chardev-change",
1711 .args_type = "id:s,args:s",
1712 .params = "id args",
1713 .help = "change chardev",
1714 .cmd = hmp_chardev_change,
1715 },
1716
1717 SRST
1718 ``chardev-change`` *args*
1719 chardev-change accepts existing chardev *id* and then the same arguments
1720 as the -chardev command line switch (except for "id").
1721 ERST
1722
1723 {
1724 .name = "chardev-remove",
1725 .args_type = "id:s",
1726 .params = "id",
1727 .help = "remove chardev",
1728 .cmd = hmp_chardev_remove,
1729 .command_completion = chardev_remove_completion,
1730 },
1731
1732 SRST
1733 ``chardev-remove`` *id*
1734 Removes the chardev *id*.
1735 ERST
1736
1737 {
1738 .name = "chardev-send-break",
1739 .args_type = "id:s",
1740 .params = "id",
1741 .help = "send a break on chardev",
1742 .cmd = hmp_chardev_send_break,
1743 .command_completion = chardev_remove_completion,
1744 },
1745
1746 SRST
1747 ``chardev-send-break`` *id*
1748 Send a break on the chardev *id*.
1749 ERST
1750
1751 {
1752 .name = "qemu-io",
1753 .args_type = "qdev:-d,device:B,command:s",
1754 .params = "[-d] [device] \"[command]\"",
1755 .help = "run a qemu-io command on a block device\n\t\t\t"
1756 "-d: [device] is a device ID rather than a "
1757 "drive ID or node name",
1758 .cmd = hmp_qemu_io,
1759 },
1760
1761 SRST
1762 ``qemu-io`` *device* *command*
1763 Executes a qemu-io command on the given block device.
1764 ERST
1765
1766 {
1767 .name = "qom-list",
1768 .args_type = "path:s?",
1769 .params = "path",
1770 .help = "list QOM properties",
1771 .cmd = hmp_qom_list,
1772 .flags = "p",
1773 },
1774
1775 SRST
1776 ``qom-list`` [*path*]
1777 Print QOM properties of object at location *path*
1778 ERST
1779
1780 {
1781 .name = "qom-get",
1782 .args_type = "path:s,property:s",
1783 .params = "path property",
1784 .help = "print QOM property",
1785 .cmd = hmp_qom_get,
1786 .flags = "p",
1787 },
1788
1789 SRST
1790 ``qom-get`` *path* *property*
1791 Print QOM property *property* of object at location *path*
1792 ERST
1793
1794 {
1795 .name = "qom-set",
1796 .args_type = "json:-j,path:s,property:s,value:S",
1797 .params = "[-j] path property value",
1798 .help = "set QOM property.\n\t\t\t"
1799 "-j: the value is specified in json format.",
1800 .cmd = hmp_qom_set,
1801 .flags = "p",
1802 },
1803
1804 SRST
1805 ``qom-set`` *path* *property* *value*
1806 Set QOM property *property* of object at location *path* to value *value*
1807 ERST
1808
1809 {
1810 .name = "replay_break",
1811 .args_type = "icount:i",
1812 .params = "icount",
1813 .help = "set breakpoint at the specified instruction count",
1814 .cmd = hmp_replay_break,
1815 },
1816
1817 SRST
1818 ``replay_break`` *icount*
1819 Set replay breakpoint at instruction count *icount*.
1820 Execution stops when the specified instruction is reached.
1821 There can be at most one breakpoint. When breakpoint is set, any prior
1822 one is removed. The breakpoint may be set only in replay mode and only
1823 "in the future", i.e. at instruction counts greater than the current one.
1824 The current instruction count can be observed with ``info replay``.
1825 ERST
1826
1827 {
1828 .name = "replay_delete_break",
1829 .args_type = "",
1830 .params = "",
1831 .help = "remove replay breakpoint",
1832 .cmd = hmp_replay_delete_break,
1833 },
1834
1835 SRST
1836 ``replay_delete_break``
1837 Remove replay breakpoint which was previously set with ``replay_break``.
1838 The command is ignored when there are no replay breakpoints.
1839 ERST
1840
1841 {
1842 .name = "replay_seek",
1843 .args_type = "icount:i",
1844 .params = "icount",
1845 .help = "replay execution to the specified instruction count",
1846 .cmd = hmp_replay_seek,
1847 },
1848
1849 SRST
1850 ``replay_seek`` *icount*
1851 Automatically proceed to the instruction count *icount*, when
1852 replaying the execution. The command automatically loads nearest
1853 snapshot and replays the execution to find the desired instruction.
1854 When there is no preceding snapshot or the execution is not replayed,
1855 then the command fails.
1856 *icount* for the reference may be observed with ``info replay`` command.
1857 ERST
1858
1859 {
1860 .name = "info",
1861 .args_type = "item:s?",
1862 .params = "[subcommand]",
1863 .help = "show various information about the system state",
1864 .cmd = hmp_info_help,
1865 .sub_table = hmp_info_cmds,
1866 .flags = "p",
1867 },
1868