xref: /qemu/hmp-commands.hx (revision 9ba58cb4)
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    {
649        .name       = "system_reset",
650        .args_type  = "",
651        .params     = "",
652        .help       = "reset the system",
653        .cmd        = hmp_system_reset,
654    },
655
656STEXI
657@item system_reset
658@findex system_reset
659Reset the system.
660ETEXI
661
662    {
663        .name       = "system_powerdown",
664        .args_type  = "",
665        .params     = "",
666        .help       = "send system power down event",
667        .cmd        = hmp_system_powerdown,
668    },
669
670STEXI
671@item system_powerdown
672@findex system_powerdown
673Power down the system (if supported).
674ETEXI
675
676    {
677        .name       = "sum",
678        .args_type  = "start:i,size:i",
679        .params     = "addr size",
680        .help       = "compute the checksum of a memory region",
681        .cmd        = hmp_sum,
682    },
683
684STEXI
685@item sum @var{addr} @var{size}
686@findex sum
687Compute the checksum of a memory region.
688ETEXI
689
690    {
691        .name       = "device_add",
692        .args_type  = "device:O",
693        .params     = "driver[,prop=value][,...]",
694        .help       = "add device, like -device on the command line",
695        .cmd        = hmp_device_add,
696        .command_completion = device_add_completion,
697    },
698
699STEXI
700@item device_add @var{config}
701@findex device_add
702Add device.
703ETEXI
704
705    {
706        .name       = "device_del",
707        .args_type  = "id:s",
708        .params     = "device",
709        .help       = "remove device",
710        .cmd        = hmp_device_del,
711        .command_completion = device_del_completion,
712    },
713
714STEXI
715@item device_del @var{id}
716@findex device_del
717Remove device @var{id}. @var{id} may be a short ID
718or a QOM object path.
719ETEXI
720
721    {
722        .name       = "cpu",
723        .args_type  = "index:i",
724        .params     = "index",
725        .help       = "set the default CPU",
726        .cmd        = hmp_cpu,
727    },
728
729STEXI
730@item cpu @var{index}
731@findex cpu
732Set the default CPU.
733ETEXI
734
735    {
736        .name       = "mouse_move",
737        .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
738        .params     = "dx dy [dz]",
739        .help       = "send mouse move events",
740        .cmd        = hmp_mouse_move,
741    },
742
743STEXI
744@item mouse_move @var{dx} @var{dy} [@var{dz}]
745@findex mouse_move
746Move the active mouse to the specified coordinates @var{dx} @var{dy}
747with optional scroll axis @var{dz}.
748ETEXI
749
750    {
751        .name       = "mouse_button",
752        .args_type  = "button_state:i",
753        .params     = "state",
754        .help       = "change mouse button state (1=L, 2=M, 4=R)",
755        .cmd        = hmp_mouse_button,
756    },
757
758STEXI
759@item mouse_button @var{val}
760@findex mouse_button
761Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
762ETEXI
763
764    {
765        .name       = "mouse_set",
766        .args_type  = "index:i",
767        .params     = "index",
768        .help       = "set which mouse device receives events",
769        .cmd        = hmp_mouse_set,
770    },
771
772STEXI
773@item mouse_set @var{index}
774@findex mouse_set
775Set which mouse device receives events at given @var{index}, index
776can be obtained with
777@example
778info mice
779@end example
780ETEXI
781
782    {
783        .name       = "wavcapture",
784        .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
785        .params     = "path [frequency [bits [channels]]]",
786        .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
787        .cmd        = hmp_wavcapture,
788    },
789STEXI
790@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
791@findex wavcapture
792Capture audio into @var{filename}. Using sample rate @var{frequency}
793bits per sample @var{bits} and number of channels @var{channels}.
794
795Defaults:
796@itemize @minus
797@item Sample rate = 44100 Hz - CD quality
798@item Bits = 16
799@item Number of channels = 2 - Stereo
800@end itemize
801ETEXI
802
803    {
804        .name       = "stopcapture",
805        .args_type  = "n:i",
806        .params     = "capture index",
807        .help       = "stop capture",
808        .cmd        = hmp_stopcapture,
809    },
810STEXI
811@item stopcapture @var{index}
812@findex stopcapture
813Stop capture with a given @var{index}, index can be obtained with
814@example
815info capture
816@end example
817ETEXI
818
819    {
820        .name       = "memsave",
821        .args_type  = "val:l,size:i,filename:s",
822        .params     = "addr size file",
823        .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
824        .cmd        = hmp_memsave,
825    },
826
827STEXI
828@item memsave @var{addr} @var{size} @var{file}
829@findex memsave
830save to disk virtual memory dump starting at @var{addr} of size @var{size}.
831ETEXI
832
833    {
834        .name       = "pmemsave",
835        .args_type  = "val:l,size:i,filename:s",
836        .params     = "addr size file",
837        .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
838        .cmd        = hmp_pmemsave,
839    },
840
841STEXI
842@item pmemsave @var{addr} @var{size} @var{file}
843@findex pmemsave
844save to disk physical memory dump starting at @var{addr} of size @var{size}.
845ETEXI
846
847    {
848        .name       = "boot_set",
849        .args_type  = "bootdevice:s",
850        .params     = "bootdevice",
851        .help       = "define new values for the boot device list",
852        .cmd        = hmp_boot_set,
853    },
854
855STEXI
856@item boot_set @var{bootdevicelist}
857@findex boot_set
858Define new values for the boot device list. Those values will override
859the values specified on the command line through the @code{-boot} option.
860
861The values that can be specified here depend on the machine type, but are
862the same that can be specified in the @code{-boot} command line option.
863ETEXI
864
865    {
866        .name       = "nmi",
867        .args_type  = "",
868        .params     = "",
869        .help       = "inject an NMI",
870        .cmd        = hmp_nmi,
871    },
872STEXI
873@item nmi @var{cpu}
874@findex nmi
875Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
876
877ETEXI
878
879    {
880        .name       = "ringbuf_write",
881        .args_type  = "device:s,data:s",
882        .params     = "device data",
883        .help       = "Write to a ring buffer character device",
884        .cmd        = hmp_ringbuf_write,
885        .command_completion = ringbuf_write_completion,
886    },
887
888STEXI
889@item ringbuf_write @var{device} @var{data}
890@findex ringbuf_write
891Write @var{data} to ring buffer character device @var{device}.
892@var{data} must be a UTF-8 string.
893
894ETEXI
895
896    {
897        .name       = "ringbuf_read",
898        .args_type  = "device:s,size:i",
899        .params     = "device size",
900        .help       = "Read from a ring buffer character device",
901        .cmd        = hmp_ringbuf_read,
902        .command_completion = ringbuf_write_completion,
903    },
904
905STEXI
906@item ringbuf_read @var{device}
907@findex ringbuf_read
908Read and print up to @var{size} bytes from ring buffer character
909device @var{device}.
910Certain non-printable characters are printed \uXXXX, where XXXX is the
911character code in hexadecimal.  Character \ is printed \\.
912Bug: can screw up when the buffer contains invalid UTF-8 sequences,
913NUL characters, after the ring buffer lost data, and when reading
914stops because the size limit is reached.
915
916ETEXI
917
918    {
919        .name       = "migrate",
920        .args_type  = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
921        .params     = "[-d] [-b] [-i] [-r] uri",
922        .help       = "migrate to URI (using -d to not wait for completion)"
923		      "\n\t\t\t -b for migration without shared storage with"
924		      " full copy of disk\n\t\t\t -i for migration without "
925		      "shared storage with incremental copy of disk "
926		      "(base image shared between src and destination)"
927                      "\n\t\t\t -r to resume a paused migration",
928        .cmd        = hmp_migrate,
929    },
930
931
932STEXI
933@item migrate [-d] [-b] [-i] @var{uri}
934@findex migrate
935Migrate to @var{uri} (using -d to not wait for completion).
936	-b for migration with full copy of disk
937	-i for migration with incremental copy of disk (base image is shared)
938ETEXI
939
940    {
941        .name       = "migrate_cancel",
942        .args_type  = "",
943        .params     = "",
944        .help       = "cancel the current VM migration",
945        .cmd        = hmp_migrate_cancel,
946    },
947
948STEXI
949@item migrate_cancel
950@findex migrate_cancel
951Cancel the current VM migration.
952ETEXI
953
954    {
955        .name       = "migrate_continue",
956        .args_type  = "state:s",
957        .params     = "state",
958        .help       = "Continue migration from the given paused state",
959        .cmd        = hmp_migrate_continue,
960    },
961STEXI
962@item migrate_continue @var{state}
963@findex migrate_continue
964Continue migration from the paused state @var{state}
965ETEXI
966
967    {
968        .name       = "migrate_incoming",
969        .args_type  = "uri:s",
970        .params     = "uri",
971        .help       = "Continue an incoming migration from an -incoming defer",
972        .cmd        = hmp_migrate_incoming,
973    },
974
975STEXI
976@item migrate_incoming @var{uri}
977@findex migrate_incoming
978Continue an incoming migration using the @var{uri} (that has the same syntax
979as the -incoming option).
980ETEXI
981
982    {
983        .name       = "migrate_recover",
984        .args_type  = "uri:s",
985        .params     = "uri",
986        .help       = "Continue a paused incoming postcopy migration",
987        .cmd        = hmp_migrate_recover,
988    },
989
990STEXI
991@item migrate_recover @var{uri}
992@findex migrate_recover
993Continue a paused incoming postcopy migration using the @var{uri}.
994ETEXI
995
996    {
997        .name       = "migrate_pause",
998        .args_type  = "",
999        .params     = "",
1000        .help       = "Pause an ongoing migration (postcopy-only)",
1001        .cmd        = hmp_migrate_pause,
1002    },
1003
1004STEXI
1005@item migrate_pause
1006@findex migrate_pause
1007Pause an ongoing migration.  Currently it only supports postcopy.
1008ETEXI
1009
1010    {
1011        .name       = "migrate_set_cache_size",
1012        .args_type  = "value:o",
1013        .params     = "value",
1014        .help       = "set cache size (in bytes) for XBZRLE migrations,"
1015                      "the cache size will be rounded down to the nearest "
1016                      "power of 2.\n"
1017                      "The cache size affects the number of cache misses."
1018                      "In case of a high cache miss ratio you need to increase"
1019                      " the cache size",
1020        .cmd        = hmp_migrate_set_cache_size,
1021    },
1022
1023STEXI
1024@item migrate_set_cache_size @var{value}
1025@findex migrate_set_cache_size
1026Set cache size to @var{value} (in bytes) for xbzrle migrations.
1027ETEXI
1028
1029    {
1030        .name       = "migrate_set_speed",
1031        .args_type  = "value:o",
1032        .params     = "value",
1033        .help       = "set maximum speed (in bytes) for migrations. "
1034	"Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1035        .cmd        = hmp_migrate_set_speed,
1036    },
1037
1038STEXI
1039@item migrate_set_speed @var{value}
1040@findex migrate_set_speed
1041Set maximum speed to @var{value} (in bytes) for migrations.
1042ETEXI
1043
1044    {
1045        .name       = "migrate_set_downtime",
1046        .args_type  = "value:T",
1047        .params     = "value",
1048        .help       = "set maximum tolerated downtime (in seconds) for migrations",
1049        .cmd        = hmp_migrate_set_downtime,
1050    },
1051
1052STEXI
1053@item migrate_set_downtime @var{second}
1054@findex migrate_set_downtime
1055Set maximum tolerated downtime (in seconds) for migration.
1056ETEXI
1057
1058    {
1059        .name       = "migrate_set_capability",
1060        .args_type  = "capability:s,state:b",
1061        .params     = "capability state",
1062        .help       = "Enable/Disable the usage of a capability for migration",
1063        .cmd        = hmp_migrate_set_capability,
1064        .command_completion = migrate_set_capability_completion,
1065    },
1066
1067STEXI
1068@item migrate_set_capability @var{capability} @var{state}
1069@findex migrate_set_capability
1070Enable/Disable the usage of a capability @var{capability} for migration.
1071ETEXI
1072
1073    {
1074        .name       = "migrate_set_parameter",
1075        .args_type  = "parameter:s,value:s",
1076        .params     = "parameter value",
1077        .help       = "Set the parameter for migration",
1078        .cmd        = hmp_migrate_set_parameter,
1079        .command_completion = migrate_set_parameter_completion,
1080    },
1081
1082STEXI
1083@item migrate_set_parameter @var{parameter} @var{value}
1084@findex migrate_set_parameter
1085Set the parameter @var{parameter} for migration.
1086ETEXI
1087
1088    {
1089        .name       = "migrate_start_postcopy",
1090        .args_type  = "",
1091        .params     = "",
1092        .help       = "Followup to a migration command to switch the migration"
1093                      " to postcopy mode. The postcopy-ram capability must "
1094                      "be set on both source and destination before the "
1095                      "original migration command .",
1096        .cmd        = hmp_migrate_start_postcopy,
1097    },
1098
1099STEXI
1100@item migrate_start_postcopy
1101@findex migrate_start_postcopy
1102Switch in-progress migration to postcopy mode. Ignored after the end of
1103migration (or once already in postcopy).
1104ETEXI
1105
1106    {
1107        .name       = "x_colo_lost_heartbeat",
1108        .args_type  = "",
1109        .params     = "",
1110        .help       = "Tell COLO that heartbeat is lost,\n\t\t\t"
1111                      "a failover or takeover is needed.",
1112        .cmd = hmp_x_colo_lost_heartbeat,
1113    },
1114
1115STEXI
1116@item x_colo_lost_heartbeat
1117@findex x_colo_lost_heartbeat
1118Tell COLO that heartbeat is lost, a failover or takeover is needed.
1119ETEXI
1120
1121    {
1122        .name       = "client_migrate_info",
1123        .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1124        .params     = "protocol hostname port tls-port cert-subject",
1125        .help       = "set migration information for remote display",
1126        .cmd        = hmp_client_migrate_info,
1127    },
1128
1129STEXI
1130@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
1131@findex client_migrate_info
1132Set migration information for remote display.  This makes the server
1133ask the client to automatically reconnect using the new parameters
1134once migration finished successfully.  Only implemented for SPICE.
1135ETEXI
1136
1137    {
1138        .name       = "dump-guest-memory",
1139        .args_type  = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1140        .params     = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1141        .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1142                      "-p: do paging to get guest's memory mapping.\n\t\t\t"
1143                      "-d: return immediately (do not wait for completion).\n\t\t\t"
1144                      "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1145                      "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1146                      "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1147                      "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1148                      "    for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1149                      "begin: the starting physical address.\n\t\t\t"
1150                      "length: the memory size, in bytes.",
1151        .cmd        = hmp_dump_guest_memory,
1152    },
1153
1154STEXI
1155@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1156@item dump-guest-memory [-z|-l|-s|-w] @var{filename}
1157@findex dump-guest-memory
1158Dump guest memory to @var{protocol}. The file can be processed with crash or
1159gdb. Without -z|-l|-s|-w, the dump format is ELF.
1160        -p: do paging to get guest's memory mapping.
1161        -z: dump in kdump-compressed format, with zlib compression.
1162        -l: dump in kdump-compressed format, with lzo compression.
1163        -s: dump in kdump-compressed format, with snappy compression.
1164        -w: dump in Windows crashdump format (can be used instead of ELF-dump converting),
1165            for Windows x64 guests with vmcoreinfo driver only
1166  filename: dump file name.
1167     begin: the starting physical address. It's optional, and should be
1168            specified together with length.
1169    length: the memory size, in bytes. It's optional, and should be specified
1170            together with begin.
1171ETEXI
1172
1173#if defined(TARGET_S390X)
1174    {
1175        .name       = "dump-skeys",
1176        .args_type  = "filename:F",
1177        .params     = "",
1178        .help       = "Save guest storage keys into file 'filename'.\n",
1179        .cmd        = hmp_dump_skeys,
1180    },
1181#endif
1182
1183STEXI
1184@item dump-skeys @var{filename}
1185@findex dump-skeys
1186Save guest storage keys to a file.
1187ETEXI
1188
1189#if defined(TARGET_S390X)
1190    {
1191        .name       = "migration_mode",
1192        .args_type  = "mode:i",
1193        .params     = "mode",
1194        .help       = "Enables or disables migration mode\n",
1195        .cmd        = hmp_migrationmode,
1196    },
1197#endif
1198
1199STEXI
1200@item migration_mode @var{mode}
1201@findex migration_mode
1202Enables or disables migration mode.
1203ETEXI
1204
1205    {
1206        .name       = "snapshot_blkdev",
1207        .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1208        .params     = "[-n] device [new-image-file] [format]",
1209        .help       = "initiates a live snapshot\n\t\t\t"
1210                      "of device. If a new image file is specified, the\n\t\t\t"
1211                      "new image file will become the new root image.\n\t\t\t"
1212                      "If format is specified, the snapshot file will\n\t\t\t"
1213                      "be created in that format.\n\t\t\t"
1214                      "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1215                      "to reuse the image found in new-image-file, instead of\n\t\t\t"
1216                      "recreating it from scratch.",
1217        .cmd        = hmp_snapshot_blkdev,
1218    },
1219
1220STEXI
1221@item snapshot_blkdev
1222@findex snapshot_blkdev
1223Snapshot device, using snapshot file as target if provided
1224ETEXI
1225
1226    {
1227        .name       = "snapshot_blkdev_internal",
1228        .args_type  = "device:B,name:s",
1229        .params     = "device name",
1230        .help       = "take an internal snapshot of device.\n\t\t\t"
1231                      "The format of the image used by device must\n\t\t\t"
1232                      "support it, such as qcow2.\n\t\t\t",
1233        .cmd        = hmp_snapshot_blkdev_internal,
1234    },
1235
1236STEXI
1237@item snapshot_blkdev_internal
1238@findex snapshot_blkdev_internal
1239Take an internal snapshot on device if it support
1240ETEXI
1241
1242    {
1243        .name       = "snapshot_delete_blkdev_internal",
1244        .args_type  = "device:B,name:s,id:s?",
1245        .params     = "device name [id]",
1246        .help       = "delete an internal snapshot of device.\n\t\t\t"
1247                      "If id is specified, qemu will try delete\n\t\t\t"
1248                      "the snapshot matching both id and name.\n\t\t\t"
1249                      "The format of the image used by device must\n\t\t\t"
1250                      "support it, such as qcow2.\n\t\t\t",
1251        .cmd        = hmp_snapshot_delete_blkdev_internal,
1252    },
1253
1254STEXI
1255@item snapshot_delete_blkdev_internal
1256@findex snapshot_delete_blkdev_internal
1257Delete an internal snapshot on device if it support
1258ETEXI
1259
1260    {
1261        .name       = "drive_mirror",
1262        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1263        .params     = "[-n] [-f] device target [format]",
1264        .help       = "initiates live storage\n\t\t\t"
1265                      "migration for a device. The device's contents are\n\t\t\t"
1266                      "copied to the new image file, including data that\n\t\t\t"
1267                      "is written after the command is started.\n\t\t\t"
1268                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1269                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1270                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1271                      "so that the result does not need a backing file.\n\t\t\t",
1272        .cmd        = hmp_drive_mirror,
1273    },
1274STEXI
1275@item drive_mirror
1276@findex drive_mirror
1277Start mirroring a block device's writes to a new destination,
1278using the specified target.
1279ETEXI
1280
1281    {
1282        .name       = "drive_backup",
1283        .args_type  = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1284        .params     = "[-n] [-f] [-c] device target [format]",
1285        .help       = "initiates a point-in-time\n\t\t\t"
1286                      "copy for a device. The device's contents are\n\t\t\t"
1287                      "copied to the new image file, excluding data that\n\t\t\t"
1288                      "is written after the command is started.\n\t\t\t"
1289                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1290                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1291                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1292                      "so that the result does not need a backing file.\n\t\t\t"
1293                      "The -c flag requests QEMU to compress backup data\n\t\t\t"
1294                      "(if the target format supports it).\n\t\t\t",
1295        .cmd        = hmp_drive_backup,
1296    },
1297STEXI
1298@item drive_backup
1299@findex drive_backup
1300Start a point-in-time copy of a block device to a specificed target.
1301ETEXI
1302
1303    {
1304        .name       = "drive_add",
1305        .args_type  = "node:-n,pci_addr:s,opts:s",
1306        .params     = "[-n] [[<domain>:]<bus>:]<slot>\n"
1307                      "[file=file][,if=type][,bus=n]\n"
1308                      "[,unit=m][,media=d][,index=i]\n"
1309                      "[,snapshot=on|off][,cache=on|off]\n"
1310                      "[,readonly=on|off][,copy-on-read=on|off]",
1311        .help       = "add drive to PCI storage controller",
1312        .cmd        = hmp_drive_add,
1313    },
1314
1315STEXI
1316@item drive_add
1317@findex drive_add
1318Add drive to PCI storage controller.
1319ETEXI
1320
1321    {
1322        .name       = "pcie_aer_inject_error",
1323        .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1324	              "id:s,error_status:s,"
1325	              "header0:i?,header1:i?,header2:i?,header3:i?,"
1326	              "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1327        .params     = "[-a] [-c] id "
1328                      "<error_status> [<tlp header> [<tlp header prefix>]]",
1329        .help       = "inject pcie aer error\n\t\t\t"
1330	              " -a for advisory non fatal error\n\t\t\t"
1331	              " -c for correctable error\n\t\t\t"
1332                      "<id> = qdev device id\n\t\t\t"
1333                      "<error_status> = error string or 32bit\n\t\t\t"
1334                      "<tlb header> = 32bit x 4\n\t\t\t"
1335                      "<tlb header prefix> = 32bit x 4",
1336        .cmd        = hmp_pcie_aer_inject_error,
1337    },
1338
1339STEXI
1340@item pcie_aer_inject_error
1341@findex pcie_aer_inject_error
1342Inject PCIe AER error
1343ETEXI
1344
1345    {
1346        .name       = "netdev_add",
1347        .args_type  = "netdev:O",
1348        .params     = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1349        .help       = "add host network device",
1350        .cmd        = hmp_netdev_add,
1351        .command_completion = netdev_add_completion,
1352    },
1353
1354STEXI
1355@item netdev_add
1356@findex netdev_add
1357Add host network device.
1358ETEXI
1359
1360    {
1361        .name       = "netdev_del",
1362        .args_type  = "id:s",
1363        .params     = "id",
1364        .help       = "remove host network device",
1365        .cmd        = hmp_netdev_del,
1366        .command_completion = netdev_del_completion,
1367    },
1368
1369STEXI
1370@item netdev_del
1371@findex netdev_del
1372Remove host network device.
1373ETEXI
1374
1375    {
1376        .name       = "object_add",
1377        .args_type  = "object:O",
1378        .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1379        .help       = "create QOM object",
1380        .cmd        = hmp_object_add,
1381        .command_completion = object_add_completion,
1382    },
1383
1384STEXI
1385@item object_add
1386@findex object_add
1387Create QOM object.
1388ETEXI
1389
1390    {
1391        .name       = "object_del",
1392        .args_type  = "id:s",
1393        .params     = "id",
1394        .help       = "destroy QOM object",
1395        .cmd        = hmp_object_del,
1396        .command_completion = object_del_completion,
1397    },
1398
1399STEXI
1400@item object_del
1401@findex object_del
1402Destroy QOM object.
1403ETEXI
1404
1405#ifdef CONFIG_SLIRP
1406    {
1407        .name       = "hostfwd_add",
1408        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1409        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1410        .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1411        .cmd        = hmp_hostfwd_add,
1412    },
1413#endif
1414STEXI
1415@item hostfwd_add
1416@findex hostfwd_add
1417Redirect TCP or UDP connections from host to guest (requires -net user).
1418ETEXI
1419
1420#ifdef CONFIG_SLIRP
1421    {
1422        .name       = "hostfwd_remove",
1423        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1424        .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1425        .help       = "remove host-to-guest TCP or UDP redirection",
1426        .cmd        = hmp_hostfwd_remove,
1427    },
1428
1429#endif
1430STEXI
1431@item hostfwd_remove
1432@findex hostfwd_remove
1433Remove host-to-guest TCP or UDP redirection.
1434ETEXI
1435
1436    {
1437        .name       = "balloon",
1438        .args_type  = "value:M",
1439        .params     = "target",
1440        .help       = "request VM to change its memory allocation (in MB)",
1441        .cmd        = hmp_balloon,
1442    },
1443
1444STEXI
1445@item balloon @var{value}
1446@findex balloon
1447Request VM to change its memory allocation to @var{value} (in MB).
1448ETEXI
1449
1450    {
1451        .name       = "set_link",
1452        .args_type  = "name:s,up:b",
1453        .params     = "name on|off",
1454        .help       = "change the link status of a network adapter",
1455        .cmd        = hmp_set_link,
1456        .command_completion = set_link_completion,
1457    },
1458
1459STEXI
1460@item set_link @var{name} [on|off]
1461@findex set_link
1462Switch link @var{name} on (i.e. up) or off (i.e. down).
1463ETEXI
1464
1465    {
1466        .name       = "watchdog_action",
1467        .args_type  = "action:s",
1468        .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1469        .help       = "change watchdog action",
1470        .cmd        = hmp_watchdog_action,
1471        .command_completion = watchdog_action_completion,
1472    },
1473
1474STEXI
1475@item watchdog_action
1476@findex watchdog_action
1477Change watchdog action.
1478ETEXI
1479
1480    {
1481        .name       = "acl_show",
1482        .args_type  = "aclname:s",
1483        .params     = "aclname",
1484        .help       = "list rules in the access control list",
1485        .cmd        = hmp_acl_show,
1486    },
1487
1488STEXI
1489@item acl_show @var{aclname}
1490@findex acl_show
1491List all the matching rules in the access control list, and the default
1492policy. There are currently two named access control lists,
1493@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1494certificate distinguished name, and SASL username respectively.
1495ETEXI
1496
1497    {
1498        .name       = "acl_policy",
1499        .args_type  = "aclname:s,policy:s",
1500        .params     = "aclname allow|deny",
1501        .help       = "set default access control list policy",
1502        .cmd        = hmp_acl_policy,
1503    },
1504
1505STEXI
1506@item acl_policy @var{aclname} @code{allow|deny}
1507@findex acl_policy
1508Set the default access control list policy, used in the event that
1509none of the explicit rules match. The default policy at startup is
1510always @code{deny}.
1511ETEXI
1512
1513    {
1514        .name       = "acl_add",
1515        .args_type  = "aclname:s,match:s,policy:s,index:i?",
1516        .params     = "aclname match allow|deny [index]",
1517        .help       = "add a match rule to the access control list",
1518        .cmd        = hmp_acl_add,
1519    },
1520
1521STEXI
1522@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1523@findex acl_add
1524Add a match rule to the access control list, allowing or denying access.
1525The match will normally be an exact username or x509 distinguished name,
1526but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1527allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1528normally be appended to the end of the ACL, but can be inserted
1529earlier in the list if the optional @var{index} parameter is supplied.
1530ETEXI
1531
1532    {
1533        .name       = "acl_remove",
1534        .args_type  = "aclname:s,match:s",
1535        .params     = "aclname match",
1536        .help       = "remove a match rule from the access control list",
1537        .cmd        = hmp_acl_remove,
1538    },
1539
1540STEXI
1541@item acl_remove @var{aclname} @var{match}
1542@findex acl_remove
1543Remove the specified match rule from the access control list.
1544ETEXI
1545
1546    {
1547        .name       = "acl_reset",
1548        .args_type  = "aclname:s",
1549        .params     = "aclname",
1550        .help       = "reset the access control list",
1551        .cmd        = hmp_acl_reset,
1552    },
1553
1554STEXI
1555@item acl_reset @var{aclname}
1556@findex acl_reset
1557Remove all matches from the access control list, and set the default
1558policy back to @code{deny}.
1559ETEXI
1560
1561    {
1562        .name       = "nbd_server_start",
1563        .args_type  = "all:-a,writable:-w,uri:s",
1564        .params     = "nbd_server_start [-a] [-w] host:port",
1565        .help       = "serve block devices on the given host and port",
1566        .cmd        = hmp_nbd_server_start,
1567    },
1568STEXI
1569@item nbd_server_start @var{host}:@var{port}
1570@findex nbd_server_start
1571Start an NBD server on the given host and/or port.  If the @option{-a}
1572option is included, all of the virtual machine's block devices that
1573have an inserted media on them are automatically exported; in this case,
1574the @option{-w} option makes the devices writable too.
1575ETEXI
1576
1577    {
1578        .name       = "nbd_server_add",
1579        .args_type  = "writable:-w,device:B,name:s?",
1580        .params     = "nbd_server_add [-w] device [name]",
1581        .help       = "export a block device via NBD",
1582        .cmd        = hmp_nbd_server_add,
1583    },
1584STEXI
1585@item nbd_server_add @var{device} [ @var{name} ]
1586@findex nbd_server_add
1587Export a block device through QEMU's NBD server, which must be started
1588beforehand with @command{nbd_server_start}.  The @option{-w} option makes the
1589exported device writable too.  The export name is controlled by @var{name},
1590defaulting to @var{device}.
1591ETEXI
1592
1593    {
1594        .name       = "nbd_server_remove",
1595        .args_type  = "force:-f,name:s",
1596        .params     = "nbd_server_remove [-f] name",
1597        .help       = "remove an export previously exposed via NBD",
1598        .cmd        = hmp_nbd_server_remove,
1599    },
1600STEXI
1601@item nbd_server_remove [-f] @var{name}
1602@findex nbd_server_remove
1603Stop exporting a block device through QEMU's NBD server, which was
1604previously started with @command{nbd_server_add}.  The @option{-f}
1605option forces the server to drop the export immediately even if
1606clients are connected; otherwise the command fails unless there are no
1607clients.
1608ETEXI
1609
1610    {
1611        .name       = "nbd_server_stop",
1612        .args_type  = "",
1613        .params     = "nbd_server_stop",
1614        .help       = "stop serving block devices using the NBD protocol",
1615        .cmd        = hmp_nbd_server_stop,
1616    },
1617STEXI
1618@item nbd_server_stop
1619@findex nbd_server_stop
1620Stop the QEMU embedded NBD server.
1621ETEXI
1622
1623
1624#if defined(TARGET_I386)
1625
1626    {
1627        .name       = "mce",
1628        .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1629        .params     = "[-b] cpu bank status mcgstatus addr misc",
1630        .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1631        .cmd        = hmp_mce,
1632    },
1633
1634#endif
1635STEXI
1636@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1637@findex mce (x86)
1638Inject an MCE on the given CPU (x86 only).
1639ETEXI
1640
1641    {
1642        .name       = "getfd",
1643        .args_type  = "fdname:s",
1644        .params     = "getfd name",
1645        .help       = "receive a file descriptor via SCM rights and assign it a name",
1646        .cmd        = hmp_getfd,
1647    },
1648
1649STEXI
1650@item getfd @var{fdname}
1651@findex getfd
1652If a file descriptor is passed alongside this command using the SCM_RIGHTS
1653mechanism on unix sockets, it is stored using the name @var{fdname} for
1654later use by other monitor commands.
1655ETEXI
1656
1657    {
1658        .name       = "closefd",
1659        .args_type  = "fdname:s",
1660        .params     = "closefd name",
1661        .help       = "close a file descriptor previously passed via SCM rights",
1662        .cmd        = hmp_closefd,
1663    },
1664
1665STEXI
1666@item closefd @var{fdname}
1667@findex closefd
1668Close the file descriptor previously assigned to @var{fdname} using the
1669@code{getfd} command. This is only needed if the file descriptor was never
1670used by another monitor command.
1671ETEXI
1672
1673    {
1674        .name       = "block_passwd",
1675        .args_type  = "device:B,password:s",
1676        .params     = "block_passwd device password",
1677        .help       = "set the password of encrypted block devices",
1678        .cmd        = hmp_block_passwd,
1679    },
1680
1681STEXI
1682@item block_passwd @var{device} @var{password}
1683@findex block_passwd
1684Set the encrypted device @var{device} password to @var{password}
1685
1686This command is now obsolete and will always return an error since 2.10
1687ETEXI
1688
1689    {
1690        .name       = "block_set_io_throttle",
1691        .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1692        .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1693        .help       = "change I/O throttle limits for a block drive",
1694        .cmd        = hmp_block_set_io_throttle,
1695    },
1696
1697STEXI
1698@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1699@findex block_set_io_throttle
1700Change 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}.
1701@var{device} can be a block device name, a qdev ID or a QOM path.
1702ETEXI
1703
1704    {
1705        .name       = "set_password",
1706        .args_type  = "protocol:s,password:s,connected:s?",
1707        .params     = "protocol password action-if-connected",
1708        .help       = "set spice/vnc password",
1709        .cmd        = hmp_set_password,
1710    },
1711
1712STEXI
1713@item set_password [ vnc | spice ] password [ action-if-connected ]
1714@findex set_password
1715Change spice/vnc password.  Use zero to make the password stay valid
1716forever.  @var{action-if-connected} specifies what should happen in
1717case a connection is established: @var{fail} makes the password change
1718fail.  @var{disconnect} changes the password and disconnects the
1719client.  @var{keep} changes the password and keeps the connection up.
1720@var{keep} is the default.
1721ETEXI
1722
1723    {
1724        .name       = "expire_password",
1725        .args_type  = "protocol:s,time:s",
1726        .params     = "protocol time",
1727        .help       = "set spice/vnc password expire-time",
1728        .cmd        = hmp_expire_password,
1729    },
1730
1731STEXI
1732@item expire_password [ vnc | spice ] expire-time
1733@findex expire_password
1734Specify when a password for spice/vnc becomes
1735invalid. @var{expire-time} accepts:
1736
1737@table @var
1738@item now
1739Invalidate password instantly.
1740
1741@item never
1742Password stays valid forever.
1743
1744@item +nsec
1745Password stays valid for @var{nsec} seconds starting now.
1746
1747@item nsec
1748Password is invalidated at the given time.  @var{nsec} are the seconds
1749passed since 1970, i.e. unix epoch.
1750
1751@end table
1752ETEXI
1753
1754    {
1755        .name       = "chardev-add",
1756        .args_type  = "args:s",
1757        .params     = "args",
1758        .help       = "add chardev",
1759        .cmd        = hmp_chardev_add,
1760        .command_completion = chardev_add_completion,
1761    },
1762
1763STEXI
1764@item chardev-add args
1765@findex chardev-add
1766chardev-add accepts the same parameters as the -chardev command line switch.
1767
1768ETEXI
1769
1770    {
1771        .name       = "chardev-change",
1772        .args_type  = "id:s,args:s",
1773        .params     = "id args",
1774        .help       = "change chardev",
1775        .cmd        = hmp_chardev_change,
1776    },
1777
1778STEXI
1779@item chardev-change args
1780@findex chardev-change
1781chardev-change accepts existing chardev @var{id} and then the same arguments
1782as the -chardev command line switch (except for "id").
1783
1784ETEXI
1785
1786    {
1787        .name       = "chardev-remove",
1788        .args_type  = "id:s",
1789        .params     = "id",
1790        .help       = "remove chardev",
1791        .cmd        = hmp_chardev_remove,
1792        .command_completion = chardev_remove_completion,
1793    },
1794
1795STEXI
1796@item chardev-remove id
1797@findex chardev-remove
1798Removes the chardev @var{id}.
1799
1800ETEXI
1801
1802    {
1803        .name       = "chardev-send-break",
1804        .args_type  = "id:s",
1805        .params     = "id",
1806        .help       = "send a break on chardev",
1807        .cmd        = hmp_chardev_send_break,
1808        .command_completion = chardev_remove_completion,
1809    },
1810
1811STEXI
1812@item chardev-send-break id
1813@findex chardev-send-break
1814Send a break on the chardev @var{id}.
1815
1816ETEXI
1817
1818    {
1819        .name       = "qemu-io",
1820        .args_type  = "device:B,command:s",
1821        .params     = "[device] \"[command]\"",
1822        .help       = "run a qemu-io command on a block device",
1823        .cmd        = hmp_qemu_io,
1824    },
1825
1826STEXI
1827@item qemu-io @var{device} @var{command}
1828@findex qemu-io
1829Executes a qemu-io command on the given block device.
1830
1831ETEXI
1832
1833    {
1834        .name       = "cpu-add",
1835        .args_type  = "id:i",
1836        .params     = "id",
1837        .help       = "add cpu",
1838        .cmd        = hmp_cpu_add,
1839    },
1840
1841STEXI
1842@item cpu-add @var{id}
1843@findex cpu-add
1844Add CPU with id @var{id}
1845ETEXI
1846
1847    {
1848        .name       = "qom-list",
1849        .args_type  = "path:s?",
1850        .params     = "path",
1851        .help       = "list QOM properties",
1852        .cmd        = hmp_qom_list,
1853        .flags      = "p",
1854    },
1855
1856STEXI
1857@item qom-list [@var{path}]
1858Print QOM properties of object at location @var{path}
1859ETEXI
1860
1861    {
1862        .name       = "qom-set",
1863        .args_type  = "path:s,property:s,value:s",
1864        .params     = "path property value",
1865        .help       = "set QOM property",
1866        .cmd        = hmp_qom_set,
1867        .flags      = "p",
1868    },
1869
1870STEXI
1871@item qom-set @var{path} @var{property} @var{value}
1872Set QOM property @var{property} of object at location @var{path} to value @var{value}
1873ETEXI
1874
1875    {
1876        .name       = "info",
1877        .args_type  = "item:s?",
1878        .params     = "[subcommand]",
1879        .help       = "show various information about the system state",
1880        .cmd        = hmp_info_help,
1881        .sub_table  = info_cmds,
1882        .flags      = "p",
1883    },
1884
1885STEXI
1886@end table
1887ETEXI
1888