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1HXCOMM Use DEFHEADING() to define headings in both help text and texi
2HXCOMM Text between STEXI and ETEXI are copied to texi version and
3HXCOMM discarded from C version
4HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
5HXCOMM monitor commands
6HXCOMM HXCOMM can be used for comments, discarded from both texi and C
7
8STEXI
9@table @option
10ETEXI
11
12 {
13 .name = "help|?",
14 .args_type = "name:S?",
15 .params = "[cmd]",
16 .help = "show the help",
17 .cmd = do_help_cmd,
18 .flags = "p",
19 },
20
21STEXI
22@item help or ? [@var{cmd}]
23@findex help
24Show the help for all commands or just for command @var{cmd}.
25ETEXI
26
27 {
28 .name = "commit",
29 .args_type = "device:B",
30 .params = "device|all",
31 .help = "commit changes to the disk images (if -snapshot is used) or backing files",
32 .cmd = hmp_commit,
33 },
34
35STEXI
36@item commit
37@findex commit
38Commit changes to the disk images (if -snapshot is used) or backing files.
39If the backing file is smaller than the snapshot, then the backing file will be
40resized to be the same size as the snapshot. If the snapshot is smaller than
41the backing file, the backing file will not be truncated. If you want the
42backing file to match the size of the smaller snapshot, you can safely truncate
43it yourself once the commit operation successfully completes.
44ETEXI
45
46 {
47 .name = "q|quit",
48 .args_type = "",
49 .params = "",
50 .help = "quit the emulator",
51 .cmd = hmp_quit,
52 },
53
54STEXI
55@item q or quit
56@findex quit
57Quit the emulator.
58ETEXI
59
60 {
61 .name = "exit_preconfig",
62 .args_type = "",
63 .params = "",
64 .help = "exit the preconfig state",
65 .cmd = hmp_exit_preconfig,
66 .flags = "p",
67 },
68
69STEXI
70@item exit_preconfig
71@findex exit_preconfig
72This command makes QEMU exit the preconfig state and proceed with
73VM initialization using configuration data provided on the command line
74and via the QMP monitor during the preconfig state. The command is only
75available during the preconfig state (i.e. when the --preconfig command
76line option was in use).
77ETEXI
78
79 {
80 .name = "block_resize",
81 .args_type = "device:B,size:o",
82 .params = "device size",
83 .help = "resize a block image",
84 .cmd = hmp_block_resize,
85 },
86
87STEXI
88@item block_resize
89@findex block_resize
90Resize a block image while a guest is running. Usually requires guest
91action to see the updated size. Resize to a lower size is supported,
92but should be used with extreme caution. Note that this command only
93resizes image files, it can not resize block devices like LVM volumes.
94ETEXI
95
96 {
97 .name = "block_stream",
98 .args_type = "device:B,speed:o?,base:s?",
99 .params = "device [speed [base]]",
100 .help = "copy data from a backing file into a block device",
101 .cmd = hmp_block_stream,
102 },
103
104STEXI
105@item block_stream
106@findex block_stream
107Copy data from a backing file into a block device.
108ETEXI
109
110 {
111 .name = "block_job_set_speed",
112 .args_type = "device:B,speed:o",
113 .params = "device speed",
114 .help = "set maximum speed for a background block operation",
115 .cmd = hmp_block_job_set_speed,
116 },
117
118STEXI
119@item block_job_set_speed
120@findex block_job_set_speed
121Set maximum speed for a background block operation.
122ETEXI
123
124 {
125 .name = "block_job_cancel",
126 .args_type = "force:-f,device:B",
127 .params = "[-f] device",
128 .help = "stop an active background block operation (use -f"
129 "\n\t\t\t if you want to abort the operation immediately"
130 "\n\t\t\t instead of keep running until data is in sync)",
131 .cmd = hmp_block_job_cancel,
132 },
133
134STEXI
135@item block_job_cancel
136@findex block_job_cancel
137Stop an active background block operation (streaming, mirroring).
138ETEXI
139
140 {
141 .name = "block_job_complete",
142 .args_type = "device:B",
143 .params = "device",
144 .help = "stop an active background block operation",
145 .cmd = hmp_block_job_complete,
146 },
147
148STEXI
149@item block_job_complete
150@findex block_job_complete
151Manually trigger completion of an active background block operation.
152For mirroring, this will switch the device to the destination path.
153ETEXI
154
155 {
156 .name = "block_job_pause",
157 .args_type = "device:B",
158 .params = "device",
159 .help = "pause an active background block operation",
160 .cmd = hmp_block_job_pause,
161 },
162
163STEXI
164@item block_job_pause
165@findex block_job_pause
166Pause an active block streaming operation.
167ETEXI
168
169 {
170 .name = "block_job_resume",
171 .args_type = "device:B",
172 .params = "device",
173 .help = "resume a paused background block operation",
174 .cmd = hmp_block_job_resume,
175 },
176
177STEXI
178@item block_job_resume
179@findex block_job_resume
180Resume a paused block streaming operation.
181ETEXI
182
183 {
184 .name = "eject",
185 .args_type = "force:-f,device:B",
186 .params = "[-f] device",
187 .help = "eject a removable medium (use -f to force it)",
188 .cmd = hmp_eject,
189 },
190
191STEXI
192@item eject [-f] @var{device}
193@findex eject
194Eject a removable medium (use -f to force it).
195ETEXI
196
197 {
198 .name = "drive_del",
199 .args_type = "id:B",
200 .params = "device",
201 .help = "remove host block device",
202 .cmd = hmp_drive_del,
203 },
204
205STEXI
206@item drive_del @var{device}
207@findex drive_del
208Remove host block device. The result is that guest generated IO is no longer
209submitted against the host device underlying the disk. Once a drive has
210been deleted, the QEMU Block layer returns -EIO which results in IO
211errors in the guest for applications that are reading/writing to the device.
212These errors are always reported to the guest, regardless of the drive's error
213actions (drive options rerror, werror).
214ETEXI
215
216 {
217 .name = "change",
218 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
219 .params = "device filename [format [read-only-mode]]",
220 .help = "change a removable medium, optional format",
221 .cmd = hmp_change,
222 },
223
224STEXI
225@item change @var{device} @var{setting}
226@findex change
227Change the configuration of a device.
228
229@table @option
230@item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]]
231Change the medium for a removable disk device to point to @var{filename}. eg
232
233@example
234(qemu) change ide1-cd0 /path/to/some.iso
235@end example
236
237@var{format} is optional.
238
239@var{read-only-mode} may be used to change the read-only status of the device.
240It accepts the following values:
241
242@table @var
243@item retain
244Retains the current status; this is the default.
245
246@item read-only
247Makes the device read-only.
248
249@item read-write
250Makes the device writable.
251@end table
252
253@item change vnc @var{display},@var{options}
254Change the configuration of the VNC server. The valid syntax for @var{display}
255and @var{options} are described at @ref{sec_invocation}. eg
256
257@example
258(qemu) change vnc localhost:1
259@end example
260
261@item change vnc password [@var{password}]
262
263Change the password associated with the VNC server. If the new password is not
264supplied, the monitor will prompt for it to be entered. VNC passwords are only
265significant up to 8 letters. eg
266
267@example
268(qemu) change vnc password
269Password: ********
270@end example
271
272@end table
273ETEXI
274
275 {
276 .name = "screendump",
277 .args_type = "filename:F,device:s?,head:i?",
278 .params = "filename [device [head]]",
279 .help = "save screen from head 'head' of display device 'device' "
280 "into PPM image 'filename'",
281 .cmd = hmp_screendump,
282 },
283
284STEXI
285@item screendump @var{filename}
286@findex screendump
287Save screen into PPM image @var{filename}.
288ETEXI
289
290 {
291 .name = "logfile",
292 .args_type = "filename:F",
293 .params = "filename",
294 .help = "output logs to 'filename'",
295 .cmd = hmp_logfile,
296 },
297
298STEXI
299@item logfile @var{filename}
300@findex logfile
301Output logs to @var{filename}.
302ETEXI
303
304 {
305 .name = "trace-event",
306 .args_type = "name:s,option:b,vcpu:i?",
307 .params = "name on|off [vcpu]",
308 .help = "changes status of a specific trace event "
309 "(vcpu: vCPU to set, default is all)",
310 .cmd = hmp_trace_event,
311 .command_completion = trace_event_completion,
312 },
313
314STEXI
315@item trace-event
316@findex trace-event
317changes status of a trace event
318ETEXI
319
320#if defined(CONFIG_TRACE_SIMPLE)
321 {
322 .name = "trace-file",
323 .args_type = "op:s?,arg:F?",
324 .params = "on|off|flush|set [arg]",
325 .help = "open, close, or flush trace file, or set a new file name",
326 .cmd = hmp_trace_file,
327 },
328
329STEXI
330@item trace-file on|off|flush
331@findex trace-file
332Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed.
333ETEXI
334#endif
335
336 {
337 .name = "log",
338 .args_type = "items:s",
339 .params = "item1[,...]",
340 .help = "activate logging of the specified items",
341 .cmd = hmp_log,
342 },
343
344STEXI
345@item log @var{item1}[,...]
346@findex log
347Activate logging of the specified items.
348ETEXI
349
350 {
351 .name = "savevm",
352 .args_type = "name:s?",
353 .params = "[tag|id]",
354 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
355 .cmd = hmp_savevm,
356 },
357
358STEXI
359@item savevm [@var{tag}|@var{id}]
360@findex savevm
361Create a snapshot of the whole virtual machine. If @var{tag} is
362provided, it is used as human readable identifier. If there is already
363a snapshot with the same tag or ID, it is replaced. More info at
364@ref{vm_snapshots}.
365ETEXI
366
367 {
368 .name = "loadvm",
369 .args_type = "name:s",
370 .params = "tag|id",
371 .help = "restore a VM snapshot from its tag or id",
372 .cmd = hmp_loadvm,
373 .command_completion = loadvm_completion,
374 },
375
376STEXI
377@item loadvm @var{tag}|@var{id}
378@findex loadvm
379Set the whole virtual machine to the snapshot identified by the tag
380@var{tag} or the unique snapshot ID @var{id}.
381ETEXI
382
383 {
384 .name = "delvm",
385 .args_type = "name:s",
386 .params = "tag|id",
387 .help = "delete a VM snapshot from its tag or id",
388 .cmd = hmp_delvm,
389 .command_completion = delvm_completion,
390 },
391
392STEXI
393@item delvm @var{tag}|@var{id}
394@findex delvm
395Delete the snapshot identified by @var{tag} or @var{id}.
396ETEXI
397
398 {
399 .name = "singlestep",
400 .args_type = "option:s?",
401 .params = "[on|off]",
402 .help = "run emulation in singlestep mode or switch to normal mode",
403 .cmd = hmp_singlestep,
404 },
405
406STEXI
407@item singlestep [off]
408@findex singlestep
409Run the emulation in single step mode.
410If called with option off, the emulation returns to normal mode.
411ETEXI
412
413 {
414 .name = "stop",
415 .args_type = "",
416 .params = "",
417 .help = "stop emulation",
418 .cmd = hmp_stop,
419 },
420
421STEXI
422@item stop
423@findex stop
424Stop emulation.
425ETEXI
426
427 {
428 .name = "c|cont",
429 .args_type = "",
430 .params = "",
431 .help = "resume emulation",
432 .cmd = hmp_cont,
433 },
434
435STEXI
436@item c or cont
437@findex cont
438Resume emulation.
439ETEXI
440
441 {
442 .name = "system_wakeup",
443 .args_type = "",
444 .params = "",
445 .help = "wakeup guest from suspend",
446 .cmd = hmp_system_wakeup,
447 },
448
449STEXI
450@item system_wakeup
451@findex system_wakeup
452Wakeup guest from suspend.
453ETEXI
454
455 {
456 .name = "gdbserver",
457 .args_type = "device:s?",
458 .params = "[device]",
459 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
460 .cmd = hmp_gdbserver,
461 },
462
463STEXI
464@item gdbserver [@var{port}]
465@findex gdbserver
466Start gdbserver session (default @var{port}=1234)
467ETEXI
468
469 {
470 .name = "x",
471 .args_type = "fmt:/,addr:l",
472 .params = "/fmt addr",
473 .help = "virtual memory dump starting at 'addr'",
474 .cmd = hmp_memory_dump,
475 },
476
477STEXI
478@item x/fmt @var{addr}
479@findex x
480Virtual memory dump starting at @var{addr}.
481ETEXI
482
483 {
484 .name = "xp",
485 .args_type = "fmt:/,addr:l",
486 .params = "/fmt addr",
487 .help = "physical memory dump starting at 'addr'",
488 .cmd = hmp_physical_memory_dump,
489 },
490
491STEXI
492@item xp /@var{fmt} @var{addr}
493@findex xp
494Physical memory dump starting at @var{addr}.
495
496@var{fmt} is a format which tells the command how to format the
497data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
498
499@table @var
500@item count
501is the number of items to be dumped.
502
503@item format
504can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
505c (char) or i (asm instruction).
506
507@item size
508can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
509@code{h} or @code{w} can be specified with the @code{i} format to
510respectively select 16 or 32 bit code instruction size.
511
512@end table
513
514Examples:
515@itemize
516@item
517Dump 10 instructions at the current instruction pointer:
518@example
519(qemu) x/10i $eip
5200x90107063: ret
5210x90107064: sti
5220x90107065: lea 0x0(%esi,1),%esi
5230x90107069: lea 0x0(%edi,1),%edi
5240x90107070: ret
5250x90107071: jmp 0x90107080
5260x90107073: nop
5270x90107074: nop
5280x90107075: nop
5290x90107076: nop
530@end example
531
532@item
533Dump 80 16 bit values at the start of the video memory.
534@smallexample
535(qemu) xp/80hx 0xb8000
5360x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
5370x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
5380x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
5390x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
5400x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
5410x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
5420x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5430x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5440x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5450x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
546@end smallexample
547@end itemize
548ETEXI
549
550 {
551 .name = "gpa2hva",
552 .args_type = "addr:l",
553 .params = "addr",
554 .help = "print the host virtual address corresponding to a guest physical address",
555 .cmd = hmp_gpa2hva,
556 },
557
558STEXI
559@item gpa2hva @var{addr}
560@findex gpa2hva
561Print the host virtual address at which the guest's physical address @var{addr}
562is mapped.
563ETEXI
564
565#ifdef CONFIG_LINUX
566 {
567 .name = "gpa2hpa",
568 .args_type = "addr:l",
569 .params = "addr",
570 .help = "print the host physical address corresponding to a guest physical address",
571 .cmd = hmp_gpa2hpa,
572 },
573#endif
574
575STEXI
576@item gpa2hpa @var{addr}
577@findex gpa2hpa
578Print the host physical address at which the guest's physical address @var{addr}
579is mapped.
580ETEXI
581
582 {
583 .name = "p|print",
584 .args_type = "fmt:/,val:l",
585 .params = "/fmt expr",
586 .help = "print expression value (use $reg for CPU register access)",
587 .cmd = do_print,
588 },
589
590STEXI
591@item p or print/@var{fmt} @var{expr}
592@findex print
593Print expression value. Only the @var{format} part of @var{fmt} is
594used.
595ETEXI
596
597 {
598 .name = "i",
599 .args_type = "fmt:/,addr:i,index:i.",
600 .params = "/fmt addr",
601 .help = "I/O port read",
602 .cmd = hmp_ioport_read,
603 },
604
605STEXI
606@item i/@var{fmt} @var{addr} [.@var{index}]
607@findex i
608Read I/O port.
609ETEXI
610
611 {
612 .name = "o",
613 .args_type = "fmt:/,addr:i,val:i",
614 .params = "/fmt addr value",
615 .help = "I/O port write",
616 .cmd = hmp_ioport_write,
617 },
618
619STEXI
620@item o/@var{fmt} @var{addr} @var{val}
621@findex o
622Write to I/O port.
623ETEXI
624
625 {
626 .name = "sendkey",
627 .args_type = "keys:s,hold-time:i?",
628 .params = "keys [hold_ms]",
629 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
630 .cmd = hmp_sendkey,
631 .command_completion = sendkey_completion,
632 },
633
634STEXI
635@item sendkey @var{keys}
636@findex sendkey
637Send @var{keys} to the guest. @var{keys} could be the name of the
638key or the raw value in hexadecimal format. Use @code{-} to press
639several keys simultaneously. Example:
640@example
641sendkey ctrl-alt-f1
642@end example
643
644This command is useful to send keys that your graphical user interface
645intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
646ETEXI
647 {
648 .name = "sync-profile",
649 .args_type = "op:s?",
650 .params = "[on|off|reset]",
651 .help = "enable, disable or reset synchronization profiling. "
652 "With no arguments, prints whether profiling is on or off.",
653 .cmd = hmp_sync_profile,
654 },
655
656STEXI
657@item sync-profile [on|off|reset]
658@findex sync-profile
659Enable, disable or reset synchronization profiling. With no arguments, prints
660whether profiling is on or off.
661ETEXI
662
663 {
664 .name = "system_reset",
665 .args_type = "",
666 .params = "",
667 .help = "reset the system",
668 .cmd = hmp_system_reset,
669 },
670
671STEXI
672@item system_reset
673@findex system_reset
674Reset the system.
675ETEXI
676
677 {
678 .name = "system_powerdown",
679 .args_type = "",
680 .params = "",
681 .help = "send system power down event",
682 .cmd = hmp_system_powerdown,
683 },
684
685STEXI
686@item system_powerdown
687@findex system_powerdown
688Power down the system (if supported).
689ETEXI
690
691 {
692 .name = "sum",
693 .args_type = "start:i,size:i",
694 .params = "addr size",
695 .help = "compute the checksum of a memory region",
696 .cmd = hmp_sum,
697 },
698
699STEXI
700@item sum @var{addr} @var{size}
701@findex sum
702Compute the checksum of a memory region.
703ETEXI
704
705 {
706 .name = "device_add",
707 .args_type = "device:O",
708 .params = "driver[,prop=value][,...]",
709 .help = "add device, like -device on the command line",
710 .cmd = hmp_device_add,
711 .command_completion = device_add_completion,
712 },
713
714STEXI
715@item device_add @var{config}
716@findex device_add
717Add device.
718ETEXI
719
720 {
721 .name = "device_del",
722 .args_type = "id:s",
723 .params = "device",
724 .help = "remove device",
725 .cmd = hmp_device_del,
726 .command_completion = device_del_completion,
727 },
728
729STEXI
730@item device_del @var{id}
731@findex device_del
732Remove device @var{id}. @var{id} may be a short ID
733or a QOM object path.
734ETEXI
735
736 {
737 .name = "cpu",
738 .args_type = "index:i",
739 .params = "index",
740 .help = "set the default CPU",
741 .cmd = hmp_cpu,
742 },
743
744STEXI
745@item cpu @var{index}
746@findex cpu
747Set the default CPU.
748ETEXI
749
750 {
751 .name = "mouse_move",
752 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
753 .params = "dx dy [dz]",
754 .help = "send mouse move events",
755 .cmd = hmp_mouse_move,
756 },
757
758STEXI
759@item mouse_move @var{dx} @var{dy} [@var{dz}]
760@findex mouse_move
761Move the active mouse to the specified coordinates @var{dx} @var{dy}
762with optional scroll axis @var{dz}.
763ETEXI
764
765 {
766 .name = "mouse_button",
767 .args_type = "button_state:i",
768 .params = "state",
769 .help = "change mouse button state (1=L, 2=M, 4=R)",
770 .cmd = hmp_mouse_button,
771 },
772
773STEXI
774@item mouse_button @var{val}
775@findex mouse_button
776Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
777ETEXI
778
779 {
780 .name = "mouse_set",
781 .args_type = "index:i",
782 .params = "index",
783 .help = "set which mouse device receives events",
784 .cmd = hmp_mouse_set,
785 },
786
787STEXI
788@item mouse_set @var{index}
789@findex mouse_set
790Set which mouse device receives events at given @var{index}, index
791can be obtained with
792@example
793info mice
794@end example
795ETEXI
796
797 {
798 .name = "wavcapture",
799 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
800 .params = "path [frequency [bits [channels]]]",
801 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
802 .cmd = hmp_wavcapture,
803 },
804STEXI
805@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
806@findex wavcapture
807Capture audio into @var{filename}. Using sample rate @var{frequency}
808bits per sample @var{bits} and number of channels @var{channels}.
809
810Defaults:
811@itemize @minus
812@item Sample rate = 44100 Hz - CD quality
813@item Bits = 16
814@item Number of channels = 2 - Stereo
815@end itemize
816ETEXI
817
818 {
819 .name = "stopcapture",
820 .args_type = "n:i",
821 .params = "capture index",
822 .help = "stop capture",
823 .cmd = hmp_stopcapture,
824 },
825STEXI
826@item stopcapture @var{index}
827@findex stopcapture
828Stop capture with a given @var{index}, index can be obtained with
829@example
830info capture
831@end example
832ETEXI
833
834 {
835 .name = "memsave",
836 .args_type = "val:l,size:i,filename:s",
837 .params = "addr size file",
838 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
839 .cmd = hmp_memsave,
840 },
841
842STEXI
843@item memsave @var{addr} @var{size} @var{file}
844@findex memsave
845save to disk virtual memory dump starting at @var{addr} of size @var{size}.
846ETEXI
847
848 {
849 .name = "pmemsave",
850 .args_type = "val:l,size:i,filename:s",
851 .params = "addr size file",
852 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
853 .cmd = hmp_pmemsave,
854 },
855
856STEXI
857@item pmemsave @var{addr} @var{size} @var{file}
858@findex pmemsave
859save to disk physical memory dump starting at @var{addr} of size @var{size}.
860ETEXI
861
862 {
863 .name = "boot_set",
864 .args_type = "bootdevice:s",
865 .params = "bootdevice",
866 .help = "define new values for the boot device list",
867 .cmd = hmp_boot_set,
868 },
869
870STEXI
871@item boot_set @var{bootdevicelist}
872@findex boot_set
873Define new values for the boot device list. Those values will override
874the values specified on the command line through the @code{-boot} option.
875
876The values that can be specified here depend on the machine type, but are
877the same that can be specified in the @code{-boot} command line option.
878ETEXI
879
880 {
881 .name = "nmi",
882 .args_type = "",
883 .params = "",
884 .help = "inject an NMI",
885 .cmd = hmp_nmi,
886 },
887STEXI
888@item nmi @var{cpu}
889@findex nmi
890Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
891
892ETEXI
893
894 {
895 .name = "ringbuf_write",
896 .args_type = "device:s,data:s",
897 .params = "device data",
898 .help = "Write to a ring buffer character device",
899 .cmd = hmp_ringbuf_write,
900 .command_completion = ringbuf_write_completion,
901 },
902
903STEXI
904@item ringbuf_write @var{device} @var{data}
905@findex ringbuf_write
906Write @var{data} to ring buffer character device @var{device}.
907@var{data} must be a UTF-8 string.
908
909ETEXI
910
911 {
912 .name = "ringbuf_read",
913 .args_type = "device:s,size:i",
914 .params = "device size",
915 .help = "Read from a ring buffer character device",
916 .cmd = hmp_ringbuf_read,
917 .command_completion = ringbuf_write_completion,
918 },
919
920STEXI
921@item ringbuf_read @var{device}
922@findex ringbuf_read
923Read and print up to @var{size} bytes from ring buffer character
924device @var{device}.
925Certain non-printable characters are printed \uXXXX, where XXXX is the
926character code in hexadecimal. Character \ is printed \\.
927Bug: can screw up when the buffer contains invalid UTF-8 sequences,
928NUL characters, after the ring buffer lost data, and when reading
929stops because the size limit is reached.
930
931ETEXI
932
933 {
934 .name = "migrate",
935 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
936 .params = "[-d] [-b] [-i] [-r] uri",
937 .help = "migrate to URI (using -d to not wait for completion)"
938 "\n\t\t\t -b for migration without shared storage with"
939 " full copy of disk\n\t\t\t -i for migration without "
940 "shared storage with incremental copy of disk "
941 "(base image shared between src and destination)"
942 "\n\t\t\t -r to resume a paused migration",
943 .cmd = hmp_migrate,
944 },
945
946
947STEXI
948@item migrate [-d] [-b] [-i] @var{uri}
949@findex migrate
950Migrate to @var{uri} (using -d to not wait for completion).
951 -b for migration with full copy of disk
952 -i for migration with incremental copy of disk (base image is shared)
953ETEXI
954
955 {
956 .name = "migrate_cancel",
957 .args_type = "",
958 .params = "",
959 .help = "cancel the current VM migration",
960 .cmd = hmp_migrate_cancel,
961 },
962
963STEXI
964@item migrate_cancel
965@findex migrate_cancel
966Cancel the current VM migration.
967ETEXI
968
969 {
970 .name = "migrate_continue",
971 .args_type = "state:s",
972 .params = "state",
973 .help = "Continue migration from the given paused state",
974 .cmd = hmp_migrate_continue,
975 },
976STEXI
977@item migrate_continue @var{state}
978@findex migrate_continue
979Continue migration from the paused state @var{state}
980ETEXI
981
982 {
983 .name = "migrate_incoming",
984 .args_type = "uri:s",
985 .params = "uri",
986 .help = "Continue an incoming migration from an -incoming defer",
987 .cmd = hmp_migrate_incoming,
988 },
989
990STEXI
991@item migrate_incoming @var{uri}
992@findex migrate_incoming
993Continue an incoming migration using the @var{uri} (that has the same syntax
994as the -incoming option).
995ETEXI
996
997 {
998 .name = "migrate_recover",
999 .args_type = "uri:s",
1000 .params = "uri",
1001 .help = "Continue a paused incoming postcopy migration",
1002 .cmd = hmp_migrate_recover,
1003 },
1004
1005STEXI
1006@item migrate_recover @var{uri}
1007@findex migrate_recover
1008Continue a paused incoming postcopy migration using the @var{uri}.
1009ETEXI
1010
1011 {
1012 .name = "migrate_pause",
1013 .args_type = "",
1014 .params = "",
1015 .help = "Pause an ongoing migration (postcopy-only)",
1016 .cmd = hmp_migrate_pause,
1017 },
1018
1019STEXI
1020@item migrate_pause
1021@findex migrate_pause
1022Pause an ongoing migration. Currently it only supports postcopy.
1023ETEXI
1024
1025 {
1026 .name = "migrate_set_cache_size",
1027 .args_type = "value:o",
1028 .params = "value",
1029 .help = "set cache size (in bytes) for XBZRLE migrations,"
1030 "the cache size will be rounded down to the nearest "
1031 "power of 2.\n"
1032 "The cache size affects the number of cache misses."
1033 "In case of a high cache miss ratio you need to increase"
1034 " the cache size",
1035 .cmd = hmp_migrate_set_cache_size,
1036 },
1037
1038STEXI
1039@item migrate_set_cache_size @var{value}
1040@findex migrate_set_cache_size
1041Set cache size to @var{value} (in bytes) for xbzrle migrations.
1042ETEXI
1043
1044 {
1045 .name = "migrate_set_speed",
1046 .args_type = "value:o",
1047 .params = "value",
1048 .help = "set maximum speed (in bytes) for migrations. "
1049 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1050 .cmd = hmp_migrate_set_speed,
1051 },
1052
1053STEXI
1054@item migrate_set_speed @var{value}
1055@findex migrate_set_speed
1056Set maximum speed to @var{value} (in bytes) for migrations.
1057ETEXI
1058
1059 {
1060 .name = "migrate_set_downtime",
1061 .args_type = "value:T",
1062 .params = "value",
1063 .help = "set maximum tolerated downtime (in seconds) for migrations",
1064 .cmd = hmp_migrate_set_downtime,
1065 },
1066
1067STEXI
1068@item migrate_set_downtime @var{second}
1069@findex migrate_set_downtime
1070Set maximum tolerated downtime (in seconds) for migration.
1071ETEXI
1072
1073 {
1074 .name = "migrate_set_capability",
1075 .args_type = "capability:s,state:b",
1076 .params = "capability state",
1077 .help = "Enable/Disable the usage of a capability for migration",
1078 .cmd = hmp_migrate_set_capability,
1079 .command_completion = migrate_set_capability_completion,
1080 },
1081
1082STEXI
1083@item migrate_set_capability @var{capability} @var{state}
1084@findex migrate_set_capability
1085Enable/Disable the usage of a capability @var{capability} for migration.
1086ETEXI
1087
1088 {
1089 .name = "migrate_set_parameter",
1090 .args_type = "parameter:s,value:s",
1091 .params = "parameter value",
1092 .help = "Set the parameter for migration",
1093 .cmd = hmp_migrate_set_parameter,
1094 .command_completion = migrate_set_parameter_completion,
1095 },
1096
1097STEXI
1098@item migrate_set_parameter @var{parameter} @var{value}
1099@findex migrate_set_parameter
1100Set the parameter @var{parameter} for migration.
1101ETEXI
1102
1103 {
1104 .name = "migrate_start_postcopy",
1105 .args_type = "",
1106 .params = "",
1107 .help = "Followup to a migration command to switch the migration"
1108 " to postcopy mode. The postcopy-ram capability must "
1109 "be set on both source and destination before the "
1110 "original migration command .",
1111 .cmd = hmp_migrate_start_postcopy,
1112 },
1113
1114STEXI
1115@item migrate_start_postcopy
1116@findex migrate_start_postcopy
1117Switch in-progress migration to postcopy mode. Ignored after the end of
1118migration (or once already in postcopy).
1119ETEXI
1120
1121 {
1122 .name = "x_colo_lost_heartbeat",
1123 .args_type = "",
1124 .params = "",
1125 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1126 "a failover or takeover is needed.",
1127 .cmd = hmp_x_colo_lost_heartbeat,
1128 },
1129
1130STEXI
1131@item x_colo_lost_heartbeat
1132@findex x_colo_lost_heartbeat
1133Tell COLO that heartbeat is lost, a failover or takeover is needed.
1134ETEXI
1135
1136 {
1137 .name = "client_migrate_info",
1138 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1139 .params = "protocol hostname port tls-port cert-subject",
1140 .help = "set migration information for remote display",
1141 .cmd = hmp_client_migrate_info,
1142 },
1143
1144STEXI
1145@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
1146@findex client_migrate_info
1147Set migration information for remote display. This makes the server
1148ask the client to automatically reconnect using the new parameters
1149once migration finished successfully. Only implemented for SPICE.
1150ETEXI
1151
1152 {
1153 .name = "dump-guest-memory",
1154 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1155 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1156 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1157 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1158 "-d: return immediately (do not wait for completion).\n\t\t\t"
1159 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1160 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1161 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1162 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1163 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1164 "begin: the starting physical address.\n\t\t\t"
1165 "length: the memory size, in bytes.",
1166 .cmd = hmp_dump_guest_memory,
1167 },
1168
1169STEXI
1170@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1171@item dump-guest-memory [-z|-l|-s|-w] @var{filename}
1172@findex dump-guest-memory
1173Dump guest memory to @var{protocol}. The file can be processed with crash or
1174gdb. Without -z|-l|-s|-w, the dump format is ELF.
1175 -p: do paging to get guest's memory mapping.
1176 -z: dump in kdump-compressed format, with zlib compression.
1177 -l: dump in kdump-compressed format, with lzo compression.
1178 -s: dump in kdump-compressed format, with snappy compression.
1179 -w: dump in Windows crashdump format (can be used instead of ELF-dump converting),
1180 for Windows x64 guests with vmcoreinfo driver only
1181 filename: dump file name.
1182 begin: the starting physical address. It's optional, and should be
1183 specified together with length.
1184 length: the memory size, in bytes. It's optional, and should be specified
1185 together with begin.
1186ETEXI
1187
1188#if defined(TARGET_S390X)
1189 {
1190 .name = "dump-skeys",
1191 .args_type = "filename:F",
1192 .params = "",
1193 .help = "Save guest storage keys into file 'filename'.\n",
1194 .cmd = hmp_dump_skeys,
1195 },
1196#endif
1197
1198STEXI
1199@item dump-skeys @var{filename}
1200@findex dump-skeys
1201Save guest storage keys to a file.
1202ETEXI
1203
1204#if defined(TARGET_S390X)
1205 {
1206 .name = "migration_mode",
1207 .args_type = "mode:i",
1208 .params = "mode",
1209 .help = "Enables or disables migration mode\n",
1210 .cmd = hmp_migrationmode,
1211 },
1212#endif
1213
1214STEXI
1215@item migration_mode @var{mode}
1216@findex migration_mode
1217Enables or disables migration mode.
1218ETEXI
1219
1220 {
1221 .name = "snapshot_blkdev",
1222 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1223 .params = "[-n] device [new-image-file] [format]",
1224 .help = "initiates a live snapshot\n\t\t\t"
1225 "of device. If a new image file is specified, the\n\t\t\t"
1226 "new image file will become the new root image.\n\t\t\t"
1227 "If format is specified, the snapshot file will\n\t\t\t"
1228 "be created in that format.\n\t\t\t"
1229 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1230 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1231 "recreating it from scratch.",
1232 .cmd = hmp_snapshot_blkdev,
1233 },
1234
1235STEXI
1236@item snapshot_blkdev
1237@findex snapshot_blkdev
1238Snapshot device, using snapshot file as target if provided
1239ETEXI
1240
1241 {
1242 .name = "snapshot_blkdev_internal",
1243 .args_type = "device:B,name:s",
1244 .params = "device name",
1245 .help = "take an internal snapshot of device.\n\t\t\t"
1246 "The format of the image used by device must\n\t\t\t"
1247 "support it, such as qcow2.\n\t\t\t",
1248 .cmd = hmp_snapshot_blkdev_internal,
1249 },
1250
1251STEXI
1252@item snapshot_blkdev_internal
1253@findex snapshot_blkdev_internal
1254Take an internal snapshot on device if it support
1255ETEXI
1256
1257 {
1258 .name = "snapshot_delete_blkdev_internal",
1259 .args_type = "device:B,name:s,id:s?",
1260 .params = "device name [id]",
1261 .help = "delete an internal snapshot of device.\n\t\t\t"
1262 "If id is specified, qemu will try delete\n\t\t\t"
1263 "the snapshot matching both id and name.\n\t\t\t"
1264 "The format of the image used by device must\n\t\t\t"
1265 "support it, such as qcow2.\n\t\t\t",
1266 .cmd = hmp_snapshot_delete_blkdev_internal,
1267 },
1268
1269STEXI
1270@item snapshot_delete_blkdev_internal
1271@findex snapshot_delete_blkdev_internal
1272Delete an internal snapshot on device if it support
1273ETEXI
1274
1275 {
1276 .name = "drive_mirror",
1277 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1278 .params = "[-n] [-f] device target [format]",
1279 .help = "initiates live storage\n\t\t\t"
1280 "migration for a device. The device's contents are\n\t\t\t"
1281 "copied to the new image file, including data that\n\t\t\t"
1282 "is written after the command is started.\n\t\t\t"
1283 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1284 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1285 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1286 "so that the result does not need a backing file.\n\t\t\t",
1287 .cmd = hmp_drive_mirror,
1288 },
1289STEXI
1290@item drive_mirror
1291@findex drive_mirror
1292Start mirroring a block device's writes to a new destination,
1293using the specified target.
1294ETEXI
1295
1296 {
1297 .name = "drive_backup",
1298 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1299 .params = "[-n] [-f] [-c] device target [format]",
1300 .help = "initiates a point-in-time\n\t\t\t"
1301 "copy for a device. The device's contents are\n\t\t\t"
1302 "copied to the new image file, excluding data that\n\t\t\t"
1303 "is written after the command is started.\n\t\t\t"
1304 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1305 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1306 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1307 "so that the result does not need a backing file.\n\t\t\t"
1308 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1309 "(if the target format supports it).\n\t\t\t",
1310 .cmd = hmp_drive_backup,
1311 },
1312STEXI
1313@item drive_backup
1314@findex drive_backup
1315Start a point-in-time copy of a block device to a specificed target.
1316ETEXI
1317
1318 {
1319 .name = "drive_add",
1320 .args_type = "node:-n,pci_addr:s,opts:s",
1321 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1322 "[file=file][,if=type][,bus=n]\n"
1323 "[,unit=m][,media=d][,index=i]\n"
1324 "[,snapshot=on|off][,cache=on|off]\n"
1325 "[,readonly=on|off][,copy-on-read=on|off]",
1326 .help = "add drive to PCI storage controller",
1327 .cmd = hmp_drive_add,
1328 },
1329
1330STEXI
1331@item drive_add
1332@findex drive_add
1333Add drive to PCI storage controller.
1334ETEXI
1335
1336 {
1337 .name = "pcie_aer_inject_error",
1338 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1339 "id:s,error_status:s,"
1340 "header0:i?,header1:i?,header2:i?,header3:i?,"
1341 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1342 .params = "[-a] [-c] id "
1343 "<error_status> [<tlp header> [<tlp header prefix>]]",
1344 .help = "inject pcie aer error\n\t\t\t"
1345 " -a for advisory non fatal error\n\t\t\t"
1346 " -c for correctable error\n\t\t\t"
1347 "<id> = qdev device id\n\t\t\t"
1348 "<error_status> = error string or 32bit\n\t\t\t"
1349 "<tlb header> = 32bit x 4\n\t\t\t"
1350 "<tlb header prefix> = 32bit x 4",
1351 .cmd = hmp_pcie_aer_inject_error,
1352 },
1353
1354STEXI
1355@item pcie_aer_inject_error
1356@findex pcie_aer_inject_error
1357Inject PCIe AER error
1358ETEXI
1359
1360 {
1361 .name = "netdev_add",
1362 .args_type = "netdev:O",
1363 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1364 .help = "add host network device",
1365 .cmd = hmp_netdev_add,
1366 .command_completion = netdev_add_completion,
1367 },
1368
1369STEXI
1370@item netdev_add
1371@findex netdev_add
1372Add host network device.
1373ETEXI
1374
1375 {
1376 .name = "netdev_del",
1377 .args_type = "id:s",
1378 .params = "id",
1379 .help = "remove host network device",
1380 .cmd = hmp_netdev_del,
1381 .command_completion = netdev_del_completion,
1382 },
1383
1384STEXI
1385@item netdev_del
1386@findex netdev_del
1387Remove host network device.
1388ETEXI
1389
1390 {
1391 .name = "object_add",
1392 .args_type = "object:O",
1393 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1394 .help = "create QOM object",
1395 .cmd = hmp_object_add,
1396 .command_completion = object_add_completion,
1397 },
1398
1399STEXI
1400@item object_add
1401@findex object_add
1402Create QOM object.
1403ETEXI
1404
1405 {
1406 .name = "object_del",
1407 .args_type = "id:s",
1408 .params = "id",
1409 .help = "destroy QOM object",
1410 .cmd = hmp_object_del,
1411 .command_completion = object_del_completion,
1412 },
1413
1414STEXI
1415@item object_del
1416@findex object_del
1417Destroy QOM object.
1418ETEXI
1419
1420#ifdef CONFIG_SLIRP
1421 {
1422 .name = "hostfwd_add",
1423 .args_type = "arg1:s,arg2:s?,arg3:s?",
1424 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1425 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1426 .cmd = hmp_hostfwd_add,
1427 },
1428#endif
1429STEXI
1430@item hostfwd_add
1431@findex hostfwd_add
1432Redirect TCP or UDP connections from host to guest (requires -net user).
1433ETEXI
1434
1435#ifdef CONFIG_SLIRP
1436 {
1437 .name = "hostfwd_remove",
1438 .args_type = "arg1:s,arg2:s?,arg3:s?",
1439 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1440 .help = "remove host-to-guest TCP or UDP redirection",
1441 .cmd = hmp_hostfwd_remove,
1442 },
1443
1444#endif
1445STEXI
1446@item hostfwd_remove
1447@findex hostfwd_remove
1448Remove host-to-guest TCP or UDP redirection.
1449ETEXI
1450
1451 {
1452 .name = "balloon",
1453 .args_type = "value:M",
1454 .params = "target",
1455 .help = "request VM to change its memory allocation (in MB)",
1456 .cmd = hmp_balloon,
1457 },
1458
1459STEXI
1460@item balloon @var{value}
1461@findex balloon
1462Request VM to change its memory allocation to @var{value} (in MB).
1463ETEXI
1464
1465 {
1466 .name = "set_link",
1467 .args_type = "name:s,up:b",
1468 .params = "name on|off",
1469 .help = "change the link status of a network adapter",
1470 .cmd = hmp_set_link,
1471 .command_completion = set_link_completion,
1472 },
1473
1474STEXI
1475@item set_link @var{name} [on|off]
1476@findex set_link
1477Switch link @var{name} on (i.e. up) or off (i.e. down).
1478ETEXI
1479
1480 {
1481 .name = "watchdog_action",
1482 .args_type = "action:s",
1483 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1484 .help = "change watchdog action",
1485 .cmd = hmp_watchdog_action,
1486 .command_completion = watchdog_action_completion,
1487 },
1488
1489STEXI
1490@item watchdog_action
1491@findex watchdog_action
1492Change watchdog action.
1493ETEXI
1494
1495 {
1496 .name = "acl_show",
1497 .args_type = "aclname:s",
1498 .params = "aclname",
1499 .help = "list rules in the access control list",
1500 .cmd = hmp_acl_show,
1501 },
1502
1503STEXI
1504@item acl_show @var{aclname}
1505@findex acl_show
1506List all the matching rules in the access control list, and the default
1507policy. There are currently two named access control lists,
1508@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1509certificate distinguished name, and SASL username respectively.
1510ETEXI
1511
1512 {
1513 .name = "acl_policy",
1514 .args_type = "aclname:s,policy:s",
1515 .params = "aclname allow|deny",
1516 .help = "set default access control list policy",
1517 .cmd = hmp_acl_policy,
1518 },
1519
1520STEXI
1521@item acl_policy @var{aclname} @code{allow|deny}
1522@findex acl_policy
1523Set the default access control list policy, used in the event that
1524none of the explicit rules match. The default policy at startup is
1525always @code{deny}.
1526ETEXI
1527
1528 {
1529 .name = "acl_add",
1530 .args_type = "aclname:s,match:s,policy:s,index:i?",
1531 .params = "aclname match allow|deny [index]",
1532 .help = "add a match rule to the access control list",
1533 .cmd = hmp_acl_add,
1534 },
1535
1536STEXI
1537@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1538@findex acl_add
1539Add a match rule to the access control list, allowing or denying access.
1540The match will normally be an exact username or x509 distinguished name,
1541but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1542allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1543normally be appended to the end of the ACL, but can be inserted
1544earlier in the list if the optional @var{index} parameter is supplied.
1545ETEXI
1546
1547 {
1548 .name = "acl_remove",
1549 .args_type = "aclname:s,match:s",
1550 .params = "aclname match",
1551 .help = "remove a match rule from the access control list",
1552 .cmd = hmp_acl_remove,
1553 },
1554
1555STEXI
1556@item acl_remove @var{aclname} @var{match}
1557@findex acl_remove
1558Remove the specified match rule from the access control list.
1559ETEXI
1560
1561 {
1562 .name = "acl_reset",
1563 .args_type = "aclname:s",
1564 .params = "aclname",
1565 .help = "reset the access control list",
1566 .cmd = hmp_acl_reset,
1567 },
1568
1569STEXI
1570@item acl_reset @var{aclname}
1571@findex acl_reset
1572Remove all matches from the access control list, and set the default
1573policy back to @code{deny}.
1574ETEXI
1575
1576 {
1577 .name = "nbd_server_start",
1578 .args_type = "all:-a,writable:-w,uri:s",
1579 .params = "nbd_server_start [-a] [-w] host:port",
1580 .help = "serve block devices on the given host and port",
1581 .cmd = hmp_nbd_server_start,
1582 },
1583STEXI
1584@item nbd_server_start @var{host}:@var{port}
1585@findex nbd_server_start
1586Start an NBD server on the given host and/or port. If the @option{-a}
1587option is included, all of the virtual machine's block devices that
1588have an inserted media on them are automatically exported; in this case,
1589the @option{-w} option makes the devices writable too.
1590ETEXI
1591
1592 {
1593 .name = "nbd_server_add",
1594 .args_type = "writable:-w,device:B,name:s?",
1595 .params = "nbd_server_add [-w] device [name]",
1596 .help = "export a block device via NBD",
1597 .cmd = hmp_nbd_server_add,
1598 },
1599STEXI
1600@item nbd_server_add @var{device} [ @var{name} ]
1601@findex nbd_server_add
1602Export a block device through QEMU's NBD server, which must be started
1603beforehand with @command{nbd_server_start}. The @option{-w} option makes the
1604exported device writable too. The export name is controlled by @var{name},
1605defaulting to @var{device}.
1606ETEXI
1607
1608 {
1609 .name = "nbd_server_remove",
1610 .args_type = "force:-f,name:s",
1611 .params = "nbd_server_remove [-f] name",
1612 .help = "remove an export previously exposed via NBD",
1613 .cmd = hmp_nbd_server_remove,
1614 },
1615STEXI
1616@item nbd_server_remove [-f] @var{name}
1617@findex nbd_server_remove
1618Stop exporting a block device through QEMU's NBD server, which was
1619previously started with @command{nbd_server_add}. The @option{-f}
1620option forces the server to drop the export immediately even if
1621clients are connected; otherwise the command fails unless there are no
1622clients.
1623ETEXI
1624
1625 {
1626 .name = "nbd_server_stop",
1627 .args_type = "",
1628 .params = "nbd_server_stop",
1629 .help = "stop serving block devices using the NBD protocol",
1630 .cmd = hmp_nbd_server_stop,
1631 },
1632STEXI
1633@item nbd_server_stop
1634@findex nbd_server_stop
1635Stop the QEMU embedded NBD server.
1636ETEXI
1637
1638
1639#if defined(TARGET_I386)
1640
1641 {
1642 .name = "mce",
1643 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1644 .params = "[-b] cpu bank status mcgstatus addr misc",
1645 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1646 .cmd = hmp_mce,
1647 },
1648
1649#endif
1650STEXI
1651@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1652@findex mce (x86)
1653Inject an MCE on the given CPU (x86 only).
1654ETEXI
1655
1656 {
1657 .name = "getfd",
1658 .args_type = "fdname:s",
1659 .params = "getfd name",
1660 .help = "receive a file descriptor via SCM rights and assign it a name",
1661 .cmd = hmp_getfd,
1662 },
1663
1664STEXI
1665@item getfd @var{fdname}
1666@findex getfd
1667If a file descriptor is passed alongside this command using the SCM_RIGHTS
1668mechanism on unix sockets, it is stored using the name @var{fdname} for
1669later use by other monitor commands.
1670ETEXI
1671
1672 {
1673 .name = "closefd",
1674 .args_type = "fdname:s",
1675 .params = "closefd name",
1676 .help = "close a file descriptor previously passed via SCM rights",
1677 .cmd = hmp_closefd,
1678 },
1679
1680STEXI
1681@item closefd @var{fdname}
1682@findex closefd
1683Close the file descriptor previously assigned to @var{fdname} using the
1684@code{getfd} command. This is only needed if the file descriptor was never
1685used by another monitor command.
1686ETEXI
1687
1688 {
1689 .name = "block_passwd",
1690 .args_type = "device:B,password:s",
1691 .params = "block_passwd device password",
1692 .help = "set the password of encrypted block devices",
1693 .cmd = hmp_block_passwd,
1694 },
1695
1696STEXI
1697@item block_passwd @var{device} @var{password}
1698@findex block_passwd
1699Set the encrypted device @var{device} password to @var{password}
1700
1701This command is now obsolete and will always return an error since 2.10
1702ETEXI
1703
1704 {
1705 .name = "block_set_io_throttle",
1706 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1707 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1708 .help = "change I/O throttle limits for a block drive",
1709 .cmd = hmp_block_set_io_throttle,
1710 },
1711
1712STEXI
1713@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1714@findex block_set_io_throttle
1715Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}.
1716@var{device} can be a block device name, a qdev ID or a QOM path.
1717ETEXI
1718
1719 {
1720 .name = "set_password",
1721 .args_type = "protocol:s,password:s,connected:s?",
1722 .params = "protocol password action-if-connected",
1723 .help = "set spice/vnc password",
1724 .cmd = hmp_set_password,
1725 },
1726
1727STEXI
1728@item set_password [ vnc | spice ] password [ action-if-connected ]
1729@findex set_password
1730Change spice/vnc password. Use zero to make the password stay valid
1731forever. @var{action-if-connected} specifies what should happen in
1732case a connection is established: @var{fail} makes the password change
1733fail. @var{disconnect} changes the password and disconnects the
1734client. @var{keep} changes the password and keeps the connection up.
1735@var{keep} is the default.
1736ETEXI
1737
1738 {
1739 .name = "expire_password",
1740 .args_type = "protocol:s,time:s",
1741 .params = "protocol time",
1742 .help = "set spice/vnc password expire-time",
1743 .cmd = hmp_expire_password,
1744 },
1745
1746STEXI
1747@item expire_password [ vnc | spice ] expire-time
1748@findex expire_password
1749Specify when a password for spice/vnc becomes
1750invalid. @var{expire-time} accepts:
1751
1752@table @var
1753@item now
1754Invalidate password instantly.
1755
1756@item never
1757Password stays valid forever.
1758
1759@item +nsec
1760Password stays valid for @var{nsec} seconds starting now.
1761
1762@item nsec
1763Password is invalidated at the given time. @var{nsec} are the seconds
1764passed since 1970, i.e. unix epoch.
1765
1766@end table
1767ETEXI
1768
1769 {
1770 .name = "chardev-add",
1771 .args_type = "args:s",
1772 .params = "args",
1773 .help = "add chardev",
1774 .cmd = hmp_chardev_add,
1775 .command_completion = chardev_add_completion,
1776 },
1777
1778STEXI
1779@item chardev-add args
1780@findex chardev-add
1781chardev-add accepts the same parameters as the -chardev command line switch.
1782
1783ETEXI
1784
1785 {
1786 .name = "chardev-change",
1787 .args_type = "id:s,args:s",
1788 .params = "id args",
1789 .help = "change chardev",
1790 .cmd = hmp_chardev_change,
1791 },
1792
1793STEXI
1794@item chardev-change args
1795@findex chardev-change
1796chardev-change accepts existing chardev @var{id} and then the same arguments
1797as the -chardev command line switch (except for "id").
1798
1799ETEXI
1800
1801 {
1802 .name = "chardev-remove",
1803 .args_type = "id:s",
1804 .params = "id",
1805 .help = "remove chardev",
1806 .cmd = hmp_chardev_remove,
1807 .command_completion = chardev_remove_completion,
1808 },
1809
1810STEXI
1811@item chardev-remove id
1812@findex chardev-remove
1813Removes the chardev @var{id}.
1814
1815ETEXI
1816
1817 {
1818 .name = "chardev-send-break",
1819 .args_type = "id:s",
1820 .params = "id",
1821 .help = "send a break on chardev",
1822 .cmd = hmp_chardev_send_break,
1823 .command_completion = chardev_remove_completion,
1824 },
1825
1826STEXI
1827@item chardev-send-break id
1828@findex chardev-send-break
1829Send a break on the chardev @var{id}.
1830
1831ETEXI
1832
1833 {
1834 .name = "qemu-io",
1835 .args_type = "device:B,command:s",
1836 .params = "[device] \"[command]\"",
1837 .help = "run a qemu-io command on a block device",
1838 .cmd = hmp_qemu_io,
1839 },
1840
1841STEXI
1842@item qemu-io @var{device} @var{command}
1843@findex qemu-io
1844Executes a qemu-io command on the given block device.
1845
1846ETEXI
1847
1848 {
1849 .name = "cpu-add",
1850 .args_type = "id:i",
1851 .params = "id",
1852 .help = "add cpu",
1853 .cmd = hmp_cpu_add,
1854 },
1855
1856STEXI
1857@item cpu-add @var{id}
1858@findex cpu-add
1859Add CPU with id @var{id}
1860ETEXI
1861
1862 {
1863 .name = "qom-list",
1864 .args_type = "path:s?",
1865 .params = "path",
1866 .help = "list QOM properties",
1867 .cmd = hmp_qom_list,
1868 .flags = "p",
1869 },
1870
1871STEXI
1872@item qom-list [@var{path}]
1873Print QOM properties of object at location @var{path}
1874ETEXI
1875
1876 {
1877 .name = "qom-set",
1878 .args_type = "path:s,property:s,value:s",
1879 .params = "path property value",
1880 .help = "set QOM property",
1881 .cmd = hmp_qom_set,
1882 .flags = "p",
1883 },
1884
1885STEXI
1886@item qom-set @var{path} @var{property} @var{value}
1887Set QOM property @var{property} of object at location @var{path} to value @var{value}
1888ETEXI
1889
1890 {
1891 .name = "info",
1892 .args_type = "item:s?",
1893 .params = "[subcommand]",
1894 .help = "show various information about the system state",
1895 .cmd = hmp_info_help,
1896 .sub_table = info_cmds,
1897 .flags = "p",
1898 },
1899
1900STEXI
1901@end table
1902ETEXI