xref: /openbmc/qemu/hmp-commands.hx (revision 8f1e884b)
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        .mhandler.cmd = do_help_cmd,
18    },
19
20STEXI
21@item help or ? [@var{cmd}]
22@findex help
23Show the help for all commands or just for command @var{cmd}.
24ETEXI
25
26    {
27        .name       = "commit",
28        .args_type  = "device:B",
29        .params     = "device|all",
30        .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
31        .mhandler.cmd = do_commit,
32    },
33
34STEXI
35@item commit
36@findex commit
37Commit changes to the disk images (if -snapshot is used) or backing files.
38If the backing file is smaller than the snapshot, then the backing file will be
39resized to be the same size as the snapshot.  If the snapshot is smaller than
40the backing file, the backing file will not be truncated.  If you want the
41backing file to match the size of the smaller snapshot, you can safely truncate
42it yourself once the commit operation successfully completes.
43ETEXI
44
45    {
46        .name       = "q|quit",
47        .args_type  = "",
48        .params     = "",
49        .help       = "quit the emulator",
50        .user_print = monitor_user_noop,
51        .mhandler.cmd = hmp_quit,
52    },
53
54STEXI
55@item q or quit
56@findex quit
57Quit the emulator.
58ETEXI
59
60    {
61        .name       = "block_resize",
62        .args_type  = "device:B,size:o",
63        .params     = "device size",
64        .help       = "resize a block image",
65        .mhandler.cmd = hmp_block_resize,
66    },
67
68STEXI
69@item block_resize
70@findex block_resize
71Resize a block image while a guest is running.  Usually requires guest
72action to see the updated size.  Resize to a lower size is supported,
73but should be used with extreme caution.  Note that this command only
74resizes image files, it can not resize block devices like LVM volumes.
75ETEXI
76
77    {
78        .name       = "block_stream",
79        .args_type  = "device:B,speed:o?,base:s?",
80        .params     = "device [speed [base]]",
81        .help       = "copy data from a backing file into a block device",
82        .mhandler.cmd = hmp_block_stream,
83    },
84
85STEXI
86@item block_stream
87@findex block_stream
88Copy data from a backing file into a block device.
89ETEXI
90
91    {
92        .name       = "block_job_set_speed",
93        .args_type  = "device:B,speed:o",
94        .params     = "device speed",
95        .help       = "set maximum speed for a background block operation",
96        .mhandler.cmd = hmp_block_job_set_speed,
97    },
98
99STEXI
100@item block_job_set_speed
101@findex block_job_set_speed
102Set maximum speed for a background block operation.
103ETEXI
104
105    {
106        .name       = "block_job_cancel",
107        .args_type  = "force:-f,device:B",
108        .params     = "[-f] device",
109        .help       = "stop an active background block operation (use -f"
110                      "\n\t\t\t if the operation is currently paused)",
111        .mhandler.cmd = hmp_block_job_cancel,
112    },
113
114STEXI
115@item block_job_cancel
116@findex block_job_cancel
117Stop an active background block operation (streaming, mirroring).
118ETEXI
119
120    {
121        .name       = "block_job_complete",
122        .args_type  = "device:B",
123        .params     = "device",
124        .help       = "stop an active background block operation",
125        .mhandler.cmd = hmp_block_job_complete,
126    },
127
128STEXI
129@item block_job_complete
130@findex block_job_complete
131Manually trigger completion of an active background block operation.
132For mirroring, this will switch the device to the destination path.
133ETEXI
134
135    {
136        .name       = "block_job_pause",
137        .args_type  = "device:B",
138        .params     = "device",
139        .help       = "pause an active background block operation",
140        .mhandler.cmd = hmp_block_job_pause,
141    },
142
143STEXI
144@item block_job_pause
145@findex block_job_pause
146Pause an active block streaming operation.
147ETEXI
148
149    {
150        .name       = "block_job_resume",
151        .args_type  = "device:B",
152        .params     = "device",
153        .help       = "resume a paused background block operation",
154        .mhandler.cmd = hmp_block_job_resume,
155    },
156
157STEXI
158@item block_job_resume
159@findex block_job_resume
160Resume a paused block streaming operation.
161ETEXI
162
163    {
164        .name       = "eject",
165        .args_type  = "force:-f,device:B",
166        .params     = "[-f] device",
167        .help       = "eject a removable medium (use -f to force it)",
168        .mhandler.cmd = hmp_eject,
169    },
170
171STEXI
172@item eject [-f] @var{device}
173@findex eject
174Eject a removable medium (use -f to force it).
175ETEXI
176
177    {
178        .name       = "drive_del",
179        .args_type  = "id:B",
180        .params     = "device",
181        .help       = "remove host block device",
182        .user_print = monitor_user_noop,
183        .mhandler.cmd_new = do_drive_del,
184    },
185
186STEXI
187@item drive_del @var{device}
188@findex drive_del
189Remove host block device.  The result is that guest generated IO is no longer
190submitted against the host device underlying the disk.  Once a drive has
191been deleted, the QEMU Block layer returns -EIO which results in IO
192errors in the guest for applications that are reading/writing to the device.
193These errors are always reported to the guest, regardless of the drive's error
194actions (drive options rerror, werror).
195ETEXI
196
197    {
198        .name       = "change",
199        .args_type  = "device:B,target:F,arg:s?",
200        .params     = "device filename [format]",
201        .help       = "change a removable medium, optional format",
202        .mhandler.cmd = hmp_change,
203    },
204
205STEXI
206@item change @var{device} @var{setting}
207@findex change
208
209Change the configuration of a device.
210
211@table @option
212@item change @var{diskdevice} @var{filename} [@var{format}]
213Change the medium for a removable disk device to point to @var{filename}. eg
214
215@example
216(qemu) change ide1-cd0 /path/to/some.iso
217@end example
218
219@var{format} is optional.
220
221@item change vnc @var{display},@var{options}
222Change the configuration of the VNC server. The valid syntax for @var{display}
223and @var{options} are described at @ref{sec_invocation}. eg
224
225@example
226(qemu) change vnc localhost:1
227@end example
228
229@item change vnc password [@var{password}]
230
231Change the password associated with the VNC server. If the new password is not
232supplied, the monitor will prompt for it to be entered. VNC passwords are only
233significant up to 8 letters. eg
234
235@example
236(qemu) change vnc password
237Password: ********
238@end example
239
240@end table
241ETEXI
242
243    {
244        .name       = "screendump",
245        .args_type  = "filename:F",
246        .params     = "filename",
247        .help       = "save screen into PPM image 'filename'",
248        .mhandler.cmd = hmp_screen_dump,
249    },
250
251STEXI
252@item screendump @var{filename}
253@findex screendump
254Save screen into PPM image @var{filename}.
255ETEXI
256
257    {
258        .name       = "logfile",
259        .args_type  = "filename:F",
260        .params     = "filename",
261        .help       = "output logs to 'filename'",
262        .mhandler.cmd = do_logfile,
263    },
264
265STEXI
266@item logfile @var{filename}
267@findex logfile
268Output logs to @var{filename}.
269ETEXI
270
271    {
272        .name       = "trace-event",
273        .args_type  = "name:s,option:b",
274        .params     = "name on|off",
275        .help       = "changes status of a specific trace event",
276        .mhandler.cmd = do_trace_event_set_state,
277    },
278
279STEXI
280@item trace-event
281@findex trace-event
282changes status of a trace event
283ETEXI
284
285#if defined(CONFIG_TRACE_SIMPLE)
286    {
287        .name       = "trace-file",
288        .args_type  = "op:s?,arg:F?",
289        .params     = "on|off|flush|set [arg]",
290        .help       = "open, close, or flush trace file, or set a new file name",
291        .mhandler.cmd = do_trace_file,
292    },
293
294STEXI
295@item trace-file on|off|flush
296@findex trace-file
297Open, close, or flush the trace file.  If no argument is given, the status of the trace file is displayed.
298ETEXI
299#endif
300
301    {
302        .name       = "log",
303        .args_type  = "items:s",
304        .params     = "item1[,...]",
305        .help       = "activate logging of the specified items",
306        .mhandler.cmd = do_log,
307    },
308
309STEXI
310@item log @var{item1}[,...]
311@findex log
312Activate logging of the specified items.
313ETEXI
314
315    {
316        .name       = "savevm",
317        .args_type  = "name:s?",
318        .params     = "[tag|id]",
319        .help       = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
320        .mhandler.cmd = do_savevm,
321    },
322
323STEXI
324@item savevm [@var{tag}|@var{id}]
325@findex savevm
326Create a snapshot of the whole virtual machine. If @var{tag} is
327provided, it is used as human readable identifier. If there is already
328a snapshot with the same tag or ID, it is replaced. More info at
329@ref{vm_snapshots}.
330ETEXI
331
332    {
333        .name       = "loadvm",
334        .args_type  = "name:s",
335        .params     = "tag|id",
336        .help       = "restore a VM snapshot from its tag or id",
337        .mhandler.cmd = do_loadvm,
338    },
339
340STEXI
341@item loadvm @var{tag}|@var{id}
342@findex loadvm
343Set the whole virtual machine to the snapshot identified by the tag
344@var{tag} or the unique snapshot ID @var{id}.
345ETEXI
346
347    {
348        .name       = "delvm",
349        .args_type  = "name:s",
350        .params     = "tag|id",
351        .help       = "delete a VM snapshot from its tag or id",
352        .mhandler.cmd = do_delvm,
353    },
354
355STEXI
356@item delvm @var{tag}|@var{id}
357@findex delvm
358Delete the snapshot identified by @var{tag} or @var{id}.
359ETEXI
360
361    {
362        .name       = "singlestep",
363        .args_type  = "option:s?",
364        .params     = "[on|off]",
365        .help       = "run emulation in singlestep mode or switch to normal mode",
366        .mhandler.cmd = do_singlestep,
367    },
368
369STEXI
370@item singlestep [off]
371@findex singlestep
372Run the emulation in single step mode.
373If called with option off, the emulation returns to normal mode.
374ETEXI
375
376    {
377        .name       = "stop",
378        .args_type  = "",
379        .params     = "",
380        .help       = "stop emulation",
381        .mhandler.cmd = hmp_stop,
382    },
383
384STEXI
385@item stop
386@findex stop
387Stop emulation.
388ETEXI
389
390    {
391        .name       = "c|cont",
392        .args_type  = "",
393        .params     = "",
394        .help       = "resume emulation",
395        .mhandler.cmd = hmp_cont,
396    },
397
398STEXI
399@item c or cont
400@findex cont
401Resume emulation.
402ETEXI
403
404    {
405        .name       = "system_wakeup",
406        .args_type  = "",
407        .params     = "",
408        .help       = "wakeup guest from suspend",
409        .mhandler.cmd = hmp_system_wakeup,
410    },
411
412STEXI
413@item system_wakeup
414@findex system_wakeup
415Wakeup guest from suspend.
416ETEXI
417
418    {
419        .name       = "gdbserver",
420        .args_type  = "device:s?",
421        .params     = "[device]",
422        .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
423        .mhandler.cmd = do_gdbserver,
424    },
425
426STEXI
427@item gdbserver [@var{port}]
428@findex gdbserver
429Start gdbserver session (default @var{port}=1234)
430ETEXI
431
432    {
433        .name       = "x",
434        .args_type  = "fmt:/,addr:l",
435        .params     = "/fmt addr",
436        .help       = "virtual memory dump starting at 'addr'",
437        .mhandler.cmd = do_memory_dump,
438    },
439
440STEXI
441@item x/fmt @var{addr}
442@findex x
443Virtual memory dump starting at @var{addr}.
444ETEXI
445
446    {
447        .name       = "xp",
448        .args_type  = "fmt:/,addr:l",
449        .params     = "/fmt addr",
450        .help       = "physical memory dump starting at 'addr'",
451        .mhandler.cmd = do_physical_memory_dump,
452    },
453
454STEXI
455@item xp /@var{fmt} @var{addr}
456@findex xp
457Physical memory dump starting at @var{addr}.
458
459@var{fmt} is a format which tells the command how to format the
460data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
461
462@table @var
463@item count
464is the number of items to be dumped.
465
466@item format
467can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
468c (char) or i (asm instruction).
469
470@item size
471can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
472@code{h} or @code{w} can be specified with the @code{i} format to
473respectively select 16 or 32 bit code instruction size.
474
475@end table
476
477Examples:
478@itemize
479@item
480Dump 10 instructions at the current instruction pointer:
481@example
482(qemu) x/10i $eip
4830x90107063:  ret
4840x90107064:  sti
4850x90107065:  lea    0x0(%esi,1),%esi
4860x90107069:  lea    0x0(%edi,1),%edi
4870x90107070:  ret
4880x90107071:  jmp    0x90107080
4890x90107073:  nop
4900x90107074:  nop
4910x90107075:  nop
4920x90107076:  nop
493@end example
494
495@item
496Dump 80 16 bit values at the start of the video memory.
497@smallexample
498(qemu) xp/80hx 0xb8000
4990x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
5000x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
5010x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
5020x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
5030x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
5040x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
5050x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5060x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5070x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
5080x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
509@end smallexample
510@end itemize
511ETEXI
512
513    {
514        .name       = "p|print",
515        .args_type  = "fmt:/,val:l",
516        .params     = "/fmt expr",
517        .help       = "print expression value (use $reg for CPU register access)",
518        .mhandler.cmd = do_print,
519    },
520
521STEXI
522@item p or print/@var{fmt} @var{expr}
523@findex print
524
525Print expression value. Only the @var{format} part of @var{fmt} is
526used.
527ETEXI
528
529    {
530        .name       = "i",
531        .args_type  = "fmt:/,addr:i,index:i.",
532        .params     = "/fmt addr",
533        .help       = "I/O port read",
534        .mhandler.cmd = do_ioport_read,
535    },
536
537STEXI
538Read I/O port.
539ETEXI
540
541    {
542        .name       = "o",
543        .args_type  = "fmt:/,addr:i,val:i",
544        .params     = "/fmt addr value",
545        .help       = "I/O port write",
546        .mhandler.cmd = do_ioport_write,
547    },
548
549STEXI
550Write to I/O port.
551ETEXI
552
553    {
554        .name       = "sendkey",
555        .args_type  = "keys:s,hold-time:i?",
556        .params     = "keys [hold_ms]",
557        .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
558        .mhandler.cmd = hmp_send_key,
559    },
560
561STEXI
562@item sendkey @var{keys}
563@findex sendkey
564
565Send @var{keys} to the guest. @var{keys} could be the name of the
566key or the raw value in hexadecimal format. Use @code{-} to press
567several keys simultaneously. Example:
568@example
569sendkey ctrl-alt-f1
570@end example
571
572This command is useful to send keys that your graphical user interface
573intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
574ETEXI
575
576    {
577        .name       = "system_reset",
578        .args_type  = "",
579        .params     = "",
580        .help       = "reset the system",
581        .mhandler.cmd = hmp_system_reset,
582    },
583
584STEXI
585@item system_reset
586@findex system_reset
587
588Reset the system.
589ETEXI
590
591    {
592        .name       = "system_powerdown",
593        .args_type  = "",
594        .params     = "",
595        .help       = "send system power down event",
596        .mhandler.cmd = hmp_system_powerdown,
597    },
598
599STEXI
600@item system_powerdown
601@findex system_powerdown
602
603Power down the system (if supported).
604ETEXI
605
606    {
607        .name       = "sum",
608        .args_type  = "start:i,size:i",
609        .params     = "addr size",
610        .help       = "compute the checksum of a memory region",
611        .mhandler.cmd = do_sum,
612    },
613
614STEXI
615@item sum @var{addr} @var{size}
616@findex sum
617
618Compute the checksum of a memory region.
619ETEXI
620
621    {
622        .name       = "usb_add",
623        .args_type  = "devname:s",
624        .params     = "device",
625        .help       = "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')",
626        .mhandler.cmd = do_usb_add,
627    },
628
629STEXI
630@item usb_add @var{devname}
631@findex usb_add
632
633Add the USB device @var{devname}.  For details of available devices see
634@ref{usb_devices}
635ETEXI
636
637    {
638        .name       = "usb_del",
639        .args_type  = "devname:s",
640        .params     = "device",
641        .help       = "remove USB device 'bus.addr'",
642        .mhandler.cmd = do_usb_del,
643    },
644
645STEXI
646@item usb_del @var{devname}
647@findex usb_del
648
649Remove the USB device @var{devname} from the QEMU virtual USB
650hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
651command @code{info usb} to see the devices you can remove.
652ETEXI
653
654    {
655        .name       = "device_add",
656        .args_type  = "device:O",
657        .params     = "driver[,prop=value][,...]",
658        .help       = "add device, like -device on the command line",
659        .user_print = monitor_user_noop,
660        .mhandler.cmd_new = do_device_add,
661        .command_completion = device_add_completion,
662    },
663
664STEXI
665@item device_add @var{config}
666@findex device_add
667
668Add device.
669ETEXI
670
671    {
672        .name       = "device_del",
673        .args_type  = "id:s",
674        .params     = "device",
675        .help       = "remove device",
676        .mhandler.cmd = hmp_device_del,
677        .command_completion = device_del_completion,
678    },
679
680STEXI
681@item device_del @var{id}
682@findex device_del
683
684Remove device @var{id}.
685ETEXI
686
687    {
688        .name       = "cpu",
689        .args_type  = "index:i",
690        .params     = "index",
691        .help       = "set the default CPU",
692        .mhandler.cmd = hmp_cpu,
693    },
694
695STEXI
696@item cpu @var{index}
697@findex cpu
698Set the default CPU.
699ETEXI
700
701    {
702        .name       = "mouse_move",
703        .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
704        .params     = "dx dy [dz]",
705        .help       = "send mouse move events",
706        .mhandler.cmd = do_mouse_move,
707    },
708
709STEXI
710@item mouse_move @var{dx} @var{dy} [@var{dz}]
711@findex mouse_move
712Move the active mouse to the specified coordinates @var{dx} @var{dy}
713with optional scroll axis @var{dz}.
714ETEXI
715
716    {
717        .name       = "mouse_button",
718        .args_type  = "button_state:i",
719        .params     = "state",
720        .help       = "change mouse button state (1=L, 2=M, 4=R)",
721        .mhandler.cmd = do_mouse_button,
722    },
723
724STEXI
725@item mouse_button @var{val}
726@findex mouse_button
727Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
728ETEXI
729
730    {
731        .name       = "mouse_set",
732        .args_type  = "index:i",
733        .params     = "index",
734        .help       = "set which mouse device receives events",
735        .mhandler.cmd = do_mouse_set,
736    },
737
738STEXI
739@item mouse_set @var{index}
740@findex mouse_set
741Set which mouse device receives events at given @var{index}, index
742can be obtained with
743@example
744info mice
745@end example
746ETEXI
747
748    {
749        .name       = "wavcapture",
750        .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
751        .params     = "path [frequency [bits [channels]]]",
752        .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
753        .mhandler.cmd = do_wav_capture,
754    },
755STEXI
756@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
757@findex wavcapture
758Capture audio into @var{filename}. Using sample rate @var{frequency}
759bits per sample @var{bits} and number of channels @var{channels}.
760
761Defaults:
762@itemize @minus
763@item Sample rate = 44100 Hz - CD quality
764@item Bits = 16
765@item Number of channels = 2 - Stereo
766@end itemize
767ETEXI
768
769    {
770        .name       = "stopcapture",
771        .args_type  = "n:i",
772        .params     = "capture index",
773        .help       = "stop capture",
774        .mhandler.cmd = do_stop_capture,
775    },
776STEXI
777@item stopcapture @var{index}
778@findex stopcapture
779Stop capture with a given @var{index}, index can be obtained with
780@example
781info capture
782@end example
783ETEXI
784
785    {
786        .name       = "memsave",
787        .args_type  = "val:l,size:i,filename:s",
788        .params     = "addr size file",
789        .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
790        .mhandler.cmd = hmp_memsave,
791    },
792
793STEXI
794@item memsave @var{addr} @var{size} @var{file}
795@findex memsave
796save to disk virtual memory dump starting at @var{addr} of size @var{size}.
797ETEXI
798
799    {
800        .name       = "pmemsave",
801        .args_type  = "val:l,size:i,filename:s",
802        .params     = "addr size file",
803        .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
804        .mhandler.cmd = hmp_pmemsave,
805    },
806
807STEXI
808@item pmemsave @var{addr} @var{size} @var{file}
809@findex pmemsave
810save to disk physical memory dump starting at @var{addr} of size @var{size}.
811ETEXI
812
813    {
814        .name       = "boot_set",
815        .args_type  = "bootdevice:s",
816        .params     = "bootdevice",
817        .help       = "define new values for the boot device list",
818        .mhandler.cmd = do_boot_set,
819    },
820
821STEXI
822@item boot_set @var{bootdevicelist}
823@findex boot_set
824
825Define new values for the boot device list. Those values will override
826the values specified on the command line through the @code{-boot} option.
827
828The values that can be specified here depend on the machine type, but are
829the same that can be specified in the @code{-boot} command line option.
830ETEXI
831
832#if defined(TARGET_I386) || defined(TARGET_S390X)
833    {
834        .name       = "nmi",
835        .args_type  = "",
836        .params     = "",
837        .help       = "inject an NMI on all guest's CPUs",
838        .mhandler.cmd = hmp_inject_nmi,
839    },
840#endif
841STEXI
842@item nmi @var{cpu}
843@findex nmi
844Inject an NMI (x86) or RESTART (s390x) on the given CPU.
845
846ETEXI
847
848    {
849        .name       = "ringbuf_write",
850        .args_type  = "device:s,data:s",
851        .params     = "device data",
852        .help       = "Write to a ring buffer character device",
853        .mhandler.cmd = hmp_ringbuf_write,
854    },
855
856STEXI
857@item ringbuf_write @var{device} @var{data}
858@findex ringbuf_write
859Write @var{data} to ring buffer character device @var{device}.
860@var{data} must be a UTF-8 string.
861
862ETEXI
863
864    {
865        .name       = "ringbuf_read",
866        .args_type  = "device:s,size:i",
867        .params     = "device size",
868        .help       = "Read from a ring buffer character device",
869        .mhandler.cmd = hmp_ringbuf_read,
870    },
871
872STEXI
873@item ringbuf_read @var{device}
874@findex ringbuf_read
875Read and print up to @var{size} bytes from ring buffer character
876device @var{device}.
877Certain non-printable characters are printed \uXXXX, where XXXX is the
878character code in hexadecimal.  Character \ is printed \\.
879Bug: can screw up when the buffer contains invalid UTF-8 sequences,
880NUL characters, after the ring buffer lost data, and when reading
881stops because the size limit is reached.
882
883ETEXI
884
885    {
886        .name       = "migrate",
887        .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
888        .params     = "[-d] [-b] [-i] uri",
889        .help       = "migrate to URI (using -d to not wait for completion)"
890		      "\n\t\t\t -b for migration without shared storage with"
891		      " full copy of disk\n\t\t\t -i for migration without "
892		      "shared storage with incremental copy of disk "
893		      "(base image shared between src and destination)",
894        .mhandler.cmd = hmp_migrate,
895    },
896
897
898STEXI
899@item migrate [-d] [-b] [-i] @var{uri}
900@findex migrate
901Migrate to @var{uri} (using -d to not wait for completion).
902	-b for migration with full copy of disk
903	-i for migration with incremental copy of disk (base image is shared)
904ETEXI
905
906    {
907        .name       = "migrate_cancel",
908        .args_type  = "",
909        .params     = "",
910        .help       = "cancel the current VM migration",
911        .mhandler.cmd = hmp_migrate_cancel,
912    },
913
914STEXI
915@item migrate_cancel
916@findex migrate_cancel
917Cancel the current VM migration.
918
919ETEXI
920
921    {
922        .name       = "migrate_set_cache_size",
923        .args_type  = "value:o",
924        .params     = "value",
925        .help       = "set cache size (in bytes) for XBZRLE migrations,"
926                      "the cache size will be rounded down to the nearest "
927                      "power of 2.\n"
928                      "The cache size affects the number of cache misses."
929                      "In case of a high cache miss ratio you need to increase"
930                      " the cache size",
931        .mhandler.cmd = hmp_migrate_set_cache_size,
932    },
933
934STEXI
935@item migrate_set_cache_size @var{value}
936@findex migrate_set_cache_size
937Set cache size to @var{value} (in bytes) for xbzrle migrations.
938ETEXI
939
940    {
941        .name       = "migrate_set_speed",
942        .args_type  = "value:o",
943        .params     = "value",
944        .help       = "set maximum speed (in bytes) for migrations. "
945	"Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
946        .mhandler.cmd = hmp_migrate_set_speed,
947    },
948
949STEXI
950@item migrate_set_speed @var{value}
951@findex migrate_set_speed
952Set maximum speed to @var{value} (in bytes) for migrations.
953ETEXI
954
955    {
956        .name       = "migrate_set_downtime",
957        .args_type  = "value:T",
958        .params     = "value",
959        .help       = "set maximum tolerated downtime (in seconds) for migrations",
960        .mhandler.cmd = hmp_migrate_set_downtime,
961    },
962
963STEXI
964@item migrate_set_downtime @var{second}
965@findex migrate_set_downtime
966Set maximum tolerated downtime (in seconds) for migration.
967ETEXI
968
969    {
970        .name       = "migrate_set_capability",
971        .args_type  = "capability:s,state:b",
972        .params     = "capability state",
973        .help       = "Enable/Disable the usage of a capability for migration",
974        .mhandler.cmd = hmp_migrate_set_capability,
975    },
976
977STEXI
978@item migrate_set_capability @var{capability} @var{state}
979@findex migrate_set_capability
980Enable/Disable the usage of a capability @var{capability} for migration.
981ETEXI
982
983    {
984        .name       = "client_migrate_info",
985        .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
986        .params     = "protocol hostname port tls-port cert-subject",
987        .help       = "send migration info to spice/vnc client",
988        .user_print = monitor_user_noop,
989        .mhandler.cmd_async = client_migrate_info,
990        .flags      = MONITOR_CMD_ASYNC,
991    },
992
993STEXI
994@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
995@findex client_migrate_info
996Set the spice/vnc connection info for the migration target.  The spice/vnc
997server will ask the spice/vnc client to automatically reconnect using the
998new parameters (if specified) once the vm migration finished successfully.
999ETEXI
1000
1001    {
1002        .name       = "dump-guest-memory",
1003        .args_type  = "paging:-p,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?",
1004        .params     = "[-p] [-z|-l|-s] filename [begin length]",
1005        .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1006                      "-p: do paging to get guest's memory mapping.\n\t\t\t"
1007                      "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1008                      "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1009                      "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1010                      "begin: the starting physical address.\n\t\t\t"
1011                      "length: the memory size, in bytes.",
1012        .mhandler.cmd = hmp_dump_guest_memory,
1013    },
1014
1015
1016STEXI
1017@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1018@item dump-guest-memory [-z|-l|-s] @var{filename}
1019@findex dump-guest-memory
1020Dump guest memory to @var{protocol}. The file can be processed with crash or
1021gdb. Without -z|-l|-s, the dump format is ELF.
1022        -p: do paging to get guest's memory mapping.
1023        -z: dump in kdump-compressed format, with zlib compression.
1024        -l: dump in kdump-compressed format, with lzo compression.
1025        -s: dump in kdump-compressed format, with snappy compression.
1026  filename: dump file name.
1027     begin: the starting physical address. It's optional, and should be
1028            specified together with length.
1029    length: the memory size, in bytes. It's optional, and should be specified
1030            together with begin.
1031ETEXI
1032
1033    {
1034        .name       = "snapshot_blkdev",
1035        .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1036        .params     = "[-n] device [new-image-file] [format]",
1037        .help       = "initiates a live snapshot\n\t\t\t"
1038                      "of device. If a new image file is specified, the\n\t\t\t"
1039                      "new image file will become the new root image.\n\t\t\t"
1040                      "If format is specified, the snapshot file will\n\t\t\t"
1041                      "be created in that format.\n\t\t\t"
1042                      "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1043                      "to reuse the image found in new-image-file, instead of\n\t\t\t"
1044                      "recreating it from scratch.",
1045        .mhandler.cmd = hmp_snapshot_blkdev,
1046    },
1047
1048STEXI
1049@item snapshot_blkdev
1050@findex snapshot_blkdev
1051Snapshot device, using snapshot file as target if provided
1052ETEXI
1053
1054    {
1055        .name       = "snapshot_blkdev_internal",
1056        .args_type  = "device:B,name:s",
1057        .params     = "device name",
1058        .help       = "take an internal snapshot of device.\n\t\t\t"
1059                      "The format of the image used by device must\n\t\t\t"
1060                      "support it, such as qcow2.\n\t\t\t",
1061        .mhandler.cmd = hmp_snapshot_blkdev_internal,
1062    },
1063
1064STEXI
1065@item snapshot_blkdev_internal
1066@findex snapshot_blkdev_internal
1067Take an internal snapshot on device if it support
1068ETEXI
1069
1070    {
1071        .name       = "snapshot_delete_blkdev_internal",
1072        .args_type  = "device:B,name:s,id:s?",
1073        .params     = "device name [id]",
1074        .help       = "delete an internal snapshot of device.\n\t\t\t"
1075                      "If id is specified, qemu will try delete\n\t\t\t"
1076                      "the snapshot matching both id and name.\n\t\t\t"
1077                      "The format of the image used by device must\n\t\t\t"
1078                      "support it, such as qcow2.\n\t\t\t",
1079        .mhandler.cmd = hmp_snapshot_delete_blkdev_internal,
1080    },
1081
1082STEXI
1083@item snapshot_delete_blkdev_internal
1084@findex snapshot_delete_blkdev_internal
1085Delete an internal snapshot on device if it support
1086ETEXI
1087
1088    {
1089        .name       = "drive_mirror",
1090        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1091        .params     = "[-n] [-f] device target [format]",
1092        .help       = "initiates live storage\n\t\t\t"
1093                      "migration for a device. The device's contents are\n\t\t\t"
1094                      "copied to the new image file, including data that\n\t\t\t"
1095                      "is written after the command is started.\n\t\t\t"
1096                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1097                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1098                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1099                      "so that the result does not need a backing file.\n\t\t\t",
1100        .mhandler.cmd = hmp_drive_mirror,
1101    },
1102STEXI
1103@item drive_mirror
1104@findex drive_mirror
1105Start mirroring a block device's writes to a new destination,
1106using the specified target.
1107ETEXI
1108
1109    {
1110        .name       = "drive_backup",
1111        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1112        .params     = "[-n] [-f] device target [format]",
1113        .help       = "initiates a point-in-time\n\t\t\t"
1114                      "copy for a device. The device's contents are\n\t\t\t"
1115                      "copied to the new image file, excluding data that\n\t\t\t"
1116                      "is written after the command is started.\n\t\t\t"
1117                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1118                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1119                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1120                      "so that the result does not need a backing file.\n\t\t\t",
1121        .mhandler.cmd = hmp_drive_backup,
1122    },
1123STEXI
1124@item drive_backup
1125@findex drive_backup
1126Start a point-in-time copy of a block device to a specificed target.
1127ETEXI
1128
1129    {
1130        .name       = "drive_add",
1131        .args_type  = "pci_addr:s,opts:s",
1132        .params     = "[[<domain>:]<bus>:]<slot>\n"
1133                      "[file=file][,if=type][,bus=n]\n"
1134                      "[,unit=m][,media=d][,index=i]\n"
1135                      "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1136                      "[,snapshot=on|off][,cache=on|off]\n"
1137                      "[,readonly=on|off][,copy-on-read=on|off]",
1138        .help       = "add drive to PCI storage controller",
1139        .mhandler.cmd = drive_hot_add,
1140    },
1141
1142STEXI
1143@item drive_add
1144@findex drive_add
1145Add drive to PCI storage controller.
1146ETEXI
1147
1148#if defined(CONFIG_PCI_HOTPLUG_OLD)
1149    {
1150        .name       = "pci_add",
1151        .args_type  = "pci_addr:s,type:s,opts:s?",
1152        .params     = "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
1153        .help       = "hot-add PCI device",
1154        .mhandler.cmd = pci_device_hot_add,
1155    },
1156#endif
1157
1158STEXI
1159@item pci_add
1160@findex pci_add
1161Hot-add PCI device.
1162ETEXI
1163
1164#if defined(CONFIG_PCI_HOTPLUG_OLD)
1165    {
1166        .name       = "pci_del",
1167        .args_type  = "pci_addr:s",
1168        .params     = "[[<domain>:]<bus>:]<slot>",
1169        .help       = "hot remove PCI device",
1170        .mhandler.cmd = do_pci_device_hot_remove,
1171    },
1172#endif
1173
1174STEXI
1175@item pci_del
1176@findex pci_del
1177Hot remove PCI device.
1178ETEXI
1179
1180    {
1181        .name       = "pcie_aer_inject_error",
1182        .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1183	              "id:s,error_status:s,"
1184	              "header0:i?,header1:i?,header2:i?,header3:i?,"
1185	              "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1186        .params     = "[-a] [-c] id "
1187                      "<error_status> [<tlp header> [<tlp header prefix>]]",
1188        .help       = "inject pcie aer error\n\t\t\t"
1189	              " -a for advisory non fatal error\n\t\t\t"
1190	              " -c for correctable error\n\t\t\t"
1191                      "<id> = qdev device id\n\t\t\t"
1192                      "<error_status> = error string or 32bit\n\t\t\t"
1193                      "<tlb header> = 32bit x 4\n\t\t\t"
1194                      "<tlb header prefix> = 32bit x 4",
1195        .user_print  = pcie_aer_inject_error_print,
1196        .mhandler.cmd_new = do_pcie_aer_inject_error,
1197    },
1198
1199STEXI
1200@item pcie_aer_inject_error
1201@findex pcie_aer_inject_error
1202Inject PCIe AER error
1203ETEXI
1204
1205    {
1206        .name       = "host_net_add",
1207        .args_type  = "device:s,opts:s?",
1208        .params     = "tap|user|socket|vde|netmap|dump [options]",
1209        .help       = "add host VLAN client",
1210        .mhandler.cmd = net_host_device_add,
1211    },
1212
1213STEXI
1214@item host_net_add
1215@findex host_net_add
1216Add host VLAN client.
1217ETEXI
1218
1219    {
1220        .name       = "host_net_remove",
1221        .args_type  = "vlan_id:i,device:s",
1222        .params     = "vlan_id name",
1223        .help       = "remove host VLAN client",
1224        .mhandler.cmd = net_host_device_remove,
1225    },
1226
1227STEXI
1228@item host_net_remove
1229@findex host_net_remove
1230Remove host VLAN client.
1231ETEXI
1232
1233    {
1234        .name       = "netdev_add",
1235        .args_type  = "netdev:O",
1236        .params     = "[user|tap|socket|hubport|netmap],id=str[,prop=value][,...]",
1237        .help       = "add host network device",
1238        .mhandler.cmd = hmp_netdev_add,
1239    },
1240
1241STEXI
1242@item netdev_add
1243@findex netdev_add
1244Add host network device.
1245ETEXI
1246
1247    {
1248        .name       = "netdev_del",
1249        .args_type  = "id:s",
1250        .params     = "id",
1251        .help       = "remove host network device",
1252        .mhandler.cmd = hmp_netdev_del,
1253    },
1254
1255STEXI
1256@item netdev_del
1257@findex netdev_del
1258Remove host network device.
1259ETEXI
1260
1261    {
1262        .name       = "object_add",
1263        .args_type  = "object:O",
1264        .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1265        .help       = "create QOM object",
1266        .mhandler.cmd = hmp_object_add,
1267        .command_completion = object_add_completion,
1268    },
1269
1270STEXI
1271@item object_add
1272@findex object_add
1273Create QOM object.
1274ETEXI
1275
1276    {
1277        .name       = "object_del",
1278        .args_type  = "id:s",
1279        .params     = "id",
1280        .help       = "destroy QOM object",
1281        .mhandler.cmd = hmp_object_del,
1282        .command_completion = object_del_completion,
1283    },
1284
1285STEXI
1286@item object_del
1287@findex object_del
1288Destroy QOM object.
1289ETEXI
1290
1291#ifdef CONFIG_SLIRP
1292    {
1293        .name       = "hostfwd_add",
1294        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1295        .params     = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1296        .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1297        .mhandler.cmd = net_slirp_hostfwd_add,
1298    },
1299#endif
1300STEXI
1301@item hostfwd_add
1302@findex hostfwd_add
1303Redirect TCP or UDP connections from host to guest (requires -net user).
1304ETEXI
1305
1306#ifdef CONFIG_SLIRP
1307    {
1308        .name       = "hostfwd_remove",
1309        .args_type  = "arg1:s,arg2:s?,arg3:s?",
1310        .params     = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1311        .help       = "remove host-to-guest TCP or UDP redirection",
1312        .mhandler.cmd = net_slirp_hostfwd_remove,
1313    },
1314
1315#endif
1316STEXI
1317@item hostfwd_remove
1318@findex hostfwd_remove
1319Remove host-to-guest TCP or UDP redirection.
1320ETEXI
1321
1322    {
1323        .name       = "balloon",
1324        .args_type  = "value:M",
1325        .params     = "target",
1326        .help       = "request VM to change its memory allocation (in MB)",
1327        .mhandler.cmd = hmp_balloon,
1328    },
1329
1330STEXI
1331@item balloon @var{value}
1332@findex balloon
1333Request VM to change its memory allocation to @var{value} (in MB).
1334ETEXI
1335
1336    {
1337        .name       = "set_link",
1338        .args_type  = "name:s,up:b",
1339        .params     = "name on|off",
1340        .help       = "change the link status of a network adapter",
1341        .mhandler.cmd = hmp_set_link,
1342    },
1343
1344STEXI
1345@item set_link @var{name} [on|off]
1346@findex set_link
1347Switch link @var{name} on (i.e. up) or off (i.e. down).
1348ETEXI
1349
1350    {
1351        .name       = "watchdog_action",
1352        .args_type  = "action:s",
1353        .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1354        .help       = "change watchdog action",
1355        .mhandler.cmd = do_watchdog_action,
1356    },
1357
1358STEXI
1359@item watchdog_action
1360@findex watchdog_action
1361Change watchdog action.
1362ETEXI
1363
1364    {
1365        .name       = "acl_show",
1366        .args_type  = "aclname:s",
1367        .params     = "aclname",
1368        .help       = "list rules in the access control list",
1369        .mhandler.cmd = do_acl_show,
1370    },
1371
1372STEXI
1373@item acl_show @var{aclname}
1374@findex acl_show
1375List all the matching rules in the access control list, and the default
1376policy. There are currently two named access control lists,
1377@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1378certificate distinguished name, and SASL username respectively.
1379ETEXI
1380
1381    {
1382        .name       = "acl_policy",
1383        .args_type  = "aclname:s,policy:s",
1384        .params     = "aclname allow|deny",
1385        .help       = "set default access control list policy",
1386        .mhandler.cmd = do_acl_policy,
1387    },
1388
1389STEXI
1390@item acl_policy @var{aclname} @code{allow|deny}
1391@findex acl_policy
1392Set the default access control list policy, used in the event that
1393none of the explicit rules match. The default policy at startup is
1394always @code{deny}.
1395ETEXI
1396
1397    {
1398        .name       = "acl_add",
1399        .args_type  = "aclname:s,match:s,policy:s,index:i?",
1400        .params     = "aclname match allow|deny [index]",
1401        .help       = "add a match rule to the access control list",
1402        .mhandler.cmd = do_acl_add,
1403    },
1404
1405STEXI
1406@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1407@findex acl_add
1408Add a match rule to the access control list, allowing or denying access.
1409The match will normally be an exact username or x509 distinguished name,
1410but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1411allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1412normally be appended to the end of the ACL, but can be inserted
1413earlier in the list if the optional @var{index} parameter is supplied.
1414ETEXI
1415
1416    {
1417        .name       = "acl_remove",
1418        .args_type  = "aclname:s,match:s",
1419        .params     = "aclname match",
1420        .help       = "remove a match rule from the access control list",
1421        .mhandler.cmd = do_acl_remove,
1422    },
1423
1424STEXI
1425@item acl_remove @var{aclname} @var{match}
1426@findex acl_remove
1427Remove the specified match rule from the access control list.
1428ETEXI
1429
1430    {
1431        .name       = "acl_reset",
1432        .args_type  = "aclname:s",
1433        .params     = "aclname",
1434        .help       = "reset the access control list",
1435        .mhandler.cmd = do_acl_reset,
1436    },
1437
1438STEXI
1439@item acl_reset @var{aclname}
1440@findex acl_reset
1441Remove all matches from the access control list, and set the default
1442policy back to @code{deny}.
1443ETEXI
1444
1445    {
1446        .name       = "nbd_server_start",
1447        .args_type  = "all:-a,writable:-w,uri:s",
1448        .params     = "nbd_server_start [-a] [-w] host:port",
1449        .help       = "serve block devices on the given host and port",
1450        .mhandler.cmd = hmp_nbd_server_start,
1451    },
1452STEXI
1453@item nbd_server_start @var{host}:@var{port}
1454@findex nbd_server_start
1455Start an NBD server on the given host and/or port.  If the @option{-a}
1456option is included, all of the virtual machine's block devices that
1457have an inserted media on them are automatically exported; in this case,
1458the @option{-w} option makes the devices writable too.
1459ETEXI
1460
1461    {
1462        .name       = "nbd_server_add",
1463        .args_type  = "writable:-w,device:B",
1464        .params     = "nbd_server_add [-w] device",
1465        .help       = "export a block device via NBD",
1466        .mhandler.cmd = hmp_nbd_server_add,
1467    },
1468STEXI
1469@item nbd_server_add @var{device}
1470@findex nbd_server_add
1471Export a block device through QEMU's NBD server, which must be started
1472beforehand with @command{nbd_server_start}.  The @option{-w} option makes the
1473exported device writable too.
1474ETEXI
1475
1476    {
1477        .name       = "nbd_server_stop",
1478        .args_type  = "",
1479        .params     = "nbd_server_stop",
1480        .help       = "stop serving block devices using the NBD protocol",
1481        .mhandler.cmd = hmp_nbd_server_stop,
1482    },
1483STEXI
1484@item nbd_server_stop
1485@findex nbd_server_stop
1486Stop the QEMU embedded NBD server.
1487ETEXI
1488
1489
1490#if defined(TARGET_I386)
1491
1492    {
1493        .name       = "mce",
1494        .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1495        .params     = "[-b] cpu bank status mcgstatus addr misc",
1496        .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1497        .mhandler.cmd = do_inject_mce,
1498    },
1499
1500#endif
1501STEXI
1502@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1503@findex mce (x86)
1504Inject an MCE on the given CPU (x86 only).
1505ETEXI
1506
1507    {
1508        .name       = "getfd",
1509        .args_type  = "fdname:s",
1510        .params     = "getfd name",
1511        .help       = "receive a file descriptor via SCM rights and assign it a name",
1512        .mhandler.cmd = hmp_getfd,
1513    },
1514
1515STEXI
1516@item getfd @var{fdname}
1517@findex getfd
1518If a file descriptor is passed alongside this command using the SCM_RIGHTS
1519mechanism on unix sockets, it is stored using the name @var{fdname} for
1520later use by other monitor commands.
1521ETEXI
1522
1523    {
1524        .name       = "closefd",
1525        .args_type  = "fdname:s",
1526        .params     = "closefd name",
1527        .help       = "close a file descriptor previously passed via SCM rights",
1528        .mhandler.cmd = hmp_closefd,
1529    },
1530
1531STEXI
1532@item closefd @var{fdname}
1533@findex closefd
1534Close the file descriptor previously assigned to @var{fdname} using the
1535@code{getfd} command. This is only needed if the file descriptor was never
1536used by another monitor command.
1537ETEXI
1538
1539    {
1540        .name       = "block_passwd",
1541        .args_type  = "device:B,password:s",
1542        .params     = "block_passwd device password",
1543        .help       = "set the password of encrypted block devices",
1544        .mhandler.cmd = hmp_block_passwd,
1545    },
1546
1547STEXI
1548@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1549@findex block_set_io_throttle
1550Change 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}
1551ETEXI
1552
1553    {
1554        .name       = "block_set_io_throttle",
1555        .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1556        .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1557        .help       = "change I/O throttle limits for a block drive",
1558        .mhandler.cmd = hmp_block_set_io_throttle,
1559    },
1560
1561STEXI
1562@item block_passwd @var{device} @var{password}
1563@findex block_passwd
1564Set the encrypted device @var{device} password to @var{password}
1565ETEXI
1566
1567    {
1568        .name       = "set_password",
1569        .args_type  = "protocol:s,password:s,connected:s?",
1570        .params     = "protocol password action-if-connected",
1571        .help       = "set spice/vnc password",
1572        .mhandler.cmd = hmp_set_password,
1573    },
1574
1575STEXI
1576@item set_password [ vnc | spice ] password [ action-if-connected ]
1577@findex set_password
1578
1579Change spice/vnc password.  Use zero to make the password stay valid
1580forever.  @var{action-if-connected} specifies what should happen in
1581case a connection is established: @var{fail} makes the password change
1582fail.  @var{disconnect} changes the password and disconnects the
1583client.  @var{keep} changes the password and keeps the connection up.
1584@var{keep} is the default.
1585ETEXI
1586
1587    {
1588        .name       = "expire_password",
1589        .args_type  = "protocol:s,time:s",
1590        .params     = "protocol time",
1591        .help       = "set spice/vnc password expire-time",
1592        .mhandler.cmd = hmp_expire_password,
1593    },
1594
1595STEXI
1596@item expire_password [ vnc | spice ] expire-time
1597@findex expire_password
1598
1599Specify when a password for spice/vnc becomes
1600invalid. @var{expire-time} accepts:
1601
1602@table @var
1603@item now
1604Invalidate password instantly.
1605
1606@item never
1607Password stays valid forever.
1608
1609@item +nsec
1610Password stays valid for @var{nsec} seconds starting now.
1611
1612@item nsec
1613Password is invalidated at the given time.  @var{nsec} are the seconds
1614passed since 1970, i.e. unix epoch.
1615
1616@end table
1617ETEXI
1618
1619    {
1620        .name       = "chardev-add",
1621        .args_type  = "args:s",
1622        .params     = "args",
1623        .help       = "add chardev",
1624        .mhandler.cmd = hmp_chardev_add,
1625    },
1626
1627STEXI
1628@item chardev_add args
1629@findex chardev_add
1630
1631chardev_add accepts the same parameters as the -chardev command line switch.
1632
1633ETEXI
1634
1635    {
1636        .name       = "chardev-remove",
1637        .args_type  = "id:s",
1638        .params     = "id",
1639        .help       = "remove chardev",
1640        .mhandler.cmd = hmp_chardev_remove,
1641    },
1642
1643STEXI
1644@item chardev_remove id
1645@findex chardev_remove
1646
1647Removes the chardev @var{id}.
1648
1649ETEXI
1650
1651    {
1652        .name       = "qemu-io",
1653        .args_type  = "device:B,command:s",
1654        .params     = "[device] \"[command]\"",
1655        .help       = "run a qemu-io command on a block device",
1656        .mhandler.cmd = hmp_qemu_io,
1657    },
1658
1659STEXI
1660@item qemu-io @var{device} @var{command}
1661@findex qemu-io
1662
1663Executes a qemu-io command on the given block device.
1664
1665ETEXI
1666
1667    {
1668        .name       = "cpu-add",
1669        .args_type  = "id:i",
1670        .params     = "id",
1671        .help       = "add cpu",
1672        .mhandler.cmd  = hmp_cpu_add,
1673    },
1674
1675STEXI
1676@item cpu-add @var{id}
1677Add CPU with id @var{id}
1678ETEXI
1679
1680    {
1681        .name       = "info",
1682        .args_type  = "item:s?",
1683        .params     = "[subcommand]",
1684        .help       = "show various information about the system state",
1685        .mhandler.cmd = do_info_help,
1686        .sub_table = info_cmds,
1687    },
1688
1689STEXI
1690@item info @var{subcommand}
1691@findex info
1692Show various information about the system state.
1693
1694@table @option
1695@item info version
1696show the version of QEMU
1697@item info network
1698show the various VLANs and the associated devices
1699@item info chardev
1700show the character devices
1701@item info block
1702show the block devices
1703@item info blockstats
1704show block device statistics
1705@item info registers
1706show the cpu registers
1707@item info cpus
1708show infos for each CPU
1709@item info history
1710show the command line history
1711@item info irq
1712show the interrupts statistics (if available)
1713@item info pic
1714show i8259 (PIC) state
1715@item info pci
1716show emulated PCI device info
1717@item info tlb
1718show virtual to physical memory mappings (i386, SH4, SPARC, PPC, and Xtensa only)
1719@item info mem
1720show the active virtual memory mappings (i386 only)
1721@item info jit
1722show dynamic compiler info
1723@item info numa
1724show NUMA information
1725@item info kvm
1726show KVM information
1727@item info usb
1728show USB devices plugged on the virtual USB hub
1729@item info usbhost
1730show all USB host devices
1731@item info profile
1732show profiling information
1733@item info capture
1734show information about active capturing
1735@item info snapshots
1736show list of VM snapshots
1737@item info status
1738show the current VM status (running|paused)
1739@item info pcmcia
1740show guest PCMCIA status
1741@item info mice
1742show which guest mouse is receiving events
1743@item info vnc
1744show the vnc server status
1745@item info name
1746show the current VM name
1747@item info uuid
1748show the current VM UUID
1749@item info cpustats
1750show CPU statistics
1751@item info usernet
1752show user network stack connection states
1753@item info migrate
1754show migration status
1755@item info migrate_capabilities
1756show current migration capabilities
1757@item info migrate_cache_size
1758show current migration XBZRLE cache size
1759@item info balloon
1760show balloon information
1761@item info qtree
1762show device tree
1763@item info qdm
1764show qdev device model list
1765@item info roms
1766show roms
1767@item info tpm
1768show the TPM device
1769@end table
1770ETEXI
1771
1772STEXI
1773@item info trace-events
1774show available trace events and their state
1775ETEXI
1776
1777STEXI
1778@end table
1779ETEXI
1780