xref: /qemu/hmp-commands.hx (revision 370ed600)
1HXCOMM Use DEFHEADING() to define headings in both help text and rST.
2HXCOMM Text between SRST and ERST is copied to the rST 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 rST and C.
7
8
9    {
10        .name       = "help|?",
11        .args_type  = "name:S?",
12        .params     = "[cmd]",
13        .help       = "show the help",
14        .cmd        = hmp_help,
15        .flags      = "p",
16    },
17
18SRST
19``help`` or ``?`` [*cmd*]
20  Show the help for all commands or just for command *cmd*.
21ERST
22
23    {
24        .name       = "commit",
25        .args_type  = "device:B",
26        .params     = "device|all",
27        .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
28        .cmd        = hmp_commit,
29    },
30
31SRST
32``commit``
33  Commit changes to the disk images (if -snapshot is used) or backing files.
34  If the backing file is smaller than the snapshot, then the backing file
35  will be resized to be the same size as the snapshot.  If the snapshot is
36  smaller than the backing file, the backing file will not be truncated.
37  If you want the backing file to match the size of the smaller snapshot,
38  you can safely truncate it yourself once the commit operation successfully
39  completes.
40ERST
41
42    {
43        .name       = "quit|q",
44        .args_type  = "",
45        .params     = "",
46        .help       = "quit the emulator",
47        .cmd        = hmp_quit,
48        .flags      = "p",
49    },
50
51SRST
52``quit`` or ``q``
53  Quit the emulator.
54ERST
55
56    {
57        .name       = "exit_preconfig",
58        .args_type  = "",
59        .params     = "",
60        .help       = "exit the preconfig state",
61        .cmd        = hmp_exit_preconfig,
62        .flags      = "p",
63    },
64
65SRST
66``exit_preconfig``
67  This command makes QEMU exit the preconfig state and proceed with
68  VM initialization using configuration data provided on the command line
69  and via the QMP monitor during the preconfig state. The command is only
70  available during the preconfig state (i.e. when the --preconfig command
71  line option was in use).
72ERST
73
74    {
75        .name       = "block_resize",
76        .args_type  = "device:B,size:o",
77        .params     = "device size",
78        .help       = "resize a block image",
79        .cmd        = hmp_block_resize,
80        .coroutine  = true,
81        .flags      = "p",
82    },
83
84SRST
85``block_resize``
86  Resize a block image while a guest is running.  Usually requires guest
87  action to see the updated size.  Resize to a lower size is supported,
88  but should be used with extreme caution.  Note that this command only
89  resizes image files, it can not resize block devices like LVM volumes.
90ERST
91
92    {
93        .name       = "block_stream",
94        .args_type  = "device:B,speed:o?,base:s?",
95        .params     = "device [speed [base]]",
96        .help       = "copy data from a backing file into a block device",
97        .cmd        = hmp_block_stream,
98        .flags      = "p",
99    },
100
101SRST
102``block_stream``
103  Copy data from a backing file into a block device.
104ERST
105
106    {
107        .name       = "block_job_set_speed",
108        .args_type  = "device:B,speed:o",
109        .params     = "device speed",
110        .help       = "set maximum speed for a background block operation",
111        .cmd        = hmp_block_job_set_speed,
112        .flags      = "p",
113    },
114
115SRST
116``block_job_set_speed``
117  Set maximum speed for a background block operation.
118ERST
119
120    {
121        .name       = "block_job_cancel",
122        .args_type  = "force:-f,device:B",
123        .params     = "[-f] device",
124        .help       = "stop an active background block operation (use -f"
125                      "\n\t\t\t if you want to abort the operation immediately"
126                      "\n\t\t\t instead of keep running until data is in sync)",
127        .cmd        = hmp_block_job_cancel,
128        .flags      = "p",
129    },
130
131SRST
132``block_job_cancel``
133  Stop an active background block operation (streaming, mirroring).
134ERST
135
136    {
137        .name       = "block_job_complete",
138        .args_type  = "device:B",
139        .params     = "device",
140        .help       = "stop an active background block operation",
141        .cmd        = hmp_block_job_complete,
142        .flags      = "p",
143    },
144
145SRST
146``block_job_complete``
147  Manually trigger completion of an active background block operation.
148  For mirroring, this will switch the device to the destination path.
149ERST
150
151    {
152        .name       = "block_job_pause",
153        .args_type  = "device:B",
154        .params     = "device",
155        .help       = "pause an active background block operation",
156        .cmd        = hmp_block_job_pause,
157        .flags      = "p",
158    },
159
160SRST
161``block_job_pause``
162  Pause an active block streaming operation.
163ERST
164
165    {
166        .name       = "block_job_resume",
167        .args_type  = "device:B",
168        .params     = "device",
169        .help       = "resume a paused background block operation",
170        .cmd        = hmp_block_job_resume,
171        .flags      = "p",
172    },
173
174SRST
175``block_job_resume``
176  Resume a paused block streaming operation.
177ERST
178
179    {
180        .name       = "eject",
181        .args_type  = "force:-f,device:B",
182        .params     = "[-f] device",
183        .help       = "eject a removable medium (use -f to force it)",
184        .cmd        = hmp_eject,
185    },
186
187SRST
188``eject [-f]`` *device*
189  Eject a removable medium (use -f to force it).
190ERST
191
192    {
193        .name       = "drive_del",
194        .args_type  = "id:B",
195        .params     = "device",
196        .help       = "remove host block device",
197        .cmd        = hmp_drive_del,
198    },
199
200SRST
201``drive_del`` *device*
202  Remove host block device.  The result is that guest generated IO is no longer
203  submitted against the host device underlying the disk.  Once a drive has
204  been deleted, the QEMU Block layer returns -EIO which results in IO
205  errors in the guest for applications that are reading/writing to the device.
206  These errors are always reported to the guest, regardless of the drive's error
207  actions (drive options rerror, werror).
208ERST
209
210    {
211        .name       = "change",
212        .args_type  = "device:B,force:-f,target:F,arg:s?,read-only-mode:s?",
213        .params     = "device [-f] filename [format [read-only-mode]]",
214        .help       = "change a removable medium, optional format, use -f to force the operation",
215        .cmd        = hmp_change,
216    },
217
218SRST
219``change`` *device* *setting*
220  Change the configuration of a device.
221
222  ``change`` *diskdevice* [-f] *filename* [*format* [*read-only-mode*]]
223    Change the medium for a removable disk device to point to *filename*. eg::
224
225      (qemu) change ide1-cd0 /path/to/some.iso
226
227    ``-f``
228      forces the operation even if the guest has locked the tray.
229
230    *format* is optional.
231
232    *read-only-mode* may be used to change the read-only status of the device.
233    It accepts the following values:
234
235    retain
236      Retains the current status; this is the default.
237
238    read-only
239      Makes the device read-only.
240
241    read-write
242      Makes the device writable.
243
244  ``change vnc password`` [*password*]
245
246    Change the password associated with the VNC server. If the new password
247    is not supplied, the monitor will prompt for it to be entered. VNC
248    passwords are only significant up to 8 letters. eg::
249
250      (qemu) change vnc password
251      Password: ********
252
253ERST
254
255    {
256        .name       = "screendump",
257        .args_type  = "filename:F,format:-fs,device:s?,head:i?",
258        .params     = "filename [-f format] [device [head]]",
259        .help       = "save screen from head 'head' of display device 'device'"
260                      "in specified format 'format' as image 'filename'."
261                      "Currently only 'png' and 'ppm' formats are supported.",
262         .cmd        = hmp_screendump,
263        .coroutine  = true,
264    },
265
266SRST
267``screendump`` *filename*
268  Save screen into PPM image *filename*.
269ERST
270
271    {
272        .name       = "logfile",
273        .args_type  = "filename:F",
274        .params     = "filename",
275        .help       = "output logs to 'filename'",
276        .cmd        = hmp_logfile,
277    },
278
279SRST
280``logfile`` *filename*
281  Output logs to *filename*.
282ERST
283
284    {
285        .name       = "trace-event",
286        .args_type  = "name:s,option:b,vcpu:i?",
287        .params     = "name on|off [vcpu]",
288        .help       = "changes status of a specific trace event "
289                      "(vcpu: vCPU to set, default is all)",
290        .cmd = hmp_trace_event,
291        .command_completion = trace_event_completion,
292    },
293
294SRST
295``trace-event``
296  changes status of a trace event
297ERST
298
299#if defined(CONFIG_TRACE_SIMPLE)
300    {
301        .name       = "trace-file",
302        .args_type  = "op:s?,arg:F?",
303        .params     = "on|off|flush|set [arg]",
304        .help       = "open, close, or flush trace file, or set a new file name",
305        .cmd        = hmp_trace_file,
306    },
307
308SRST
309``trace-file on|off|flush``
310  Open, close, or flush the trace file.  If no argument is given, the
311  status of the trace file is displayed.
312ERST
313#endif
314
315    {
316        .name       = "log",
317        .args_type  = "items:s",
318        .params     = "item1[,...]",
319        .help       = "activate logging of the specified items",
320        .cmd        = hmp_log,
321    },
322
323SRST
324``log`` *item1*\ [,...]
325  Activate logging of the specified items.
326ERST
327
328    {
329        .name       = "savevm",
330        .args_type  = "name:s?",
331        .params     = "tag",
332        .help       = "save a VM snapshot. If no tag is provided, a new snapshot is created",
333        .cmd        = hmp_savevm,
334    },
335
336SRST
337``savevm`` *tag*
338  Create a snapshot of the whole virtual machine. If *tag* is
339  provided, it is used as human readable identifier. If there is already
340  a snapshot with the same tag, it is replaced. More info at
341  :ref:`vm_005fsnapshots`.
342
343  Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
344  only *tag* as parameter.
345ERST
346
347    {
348        .name       = "loadvm",
349        .args_type  = "name:s",
350        .params     = "tag",
351        .help       = "restore a VM snapshot from its tag",
352        .cmd        = hmp_loadvm,
353        .command_completion = loadvm_completion,
354    },
355
356SRST
357``loadvm`` *tag*
358  Set the whole virtual machine to the snapshot identified by the tag
359  *tag*.
360
361  Since 4.0, loadvm stopped accepting snapshot id as parameter.
362ERST
363
364    {
365        .name       = "delvm",
366        .args_type  = "name:s",
367        .params     = "tag",
368        .help       = "delete a VM snapshot from its tag",
369        .cmd        = hmp_delvm,
370        .command_completion = delvm_completion,
371    },
372
373SRST
374``delvm`` *tag*
375  Delete the snapshot identified by *tag*.
376
377  Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
378  only *tag* as parameter.
379ERST
380
381    {
382        .name       = "one-insn-per-tb",
383        .args_type  = "option:s?",
384        .params     = "[on|off]",
385        .help       = "run emulation with one guest instruction per translation block",
386        .cmd        = hmp_one_insn_per_tb,
387    },
388
389SRST
390``one-insn-per-tb [off]``
391  Run the emulation with one guest instruction per translation block.
392  This slows down emulation a lot, but can be useful in some situations,
393  such as when trying to analyse the logs produced by the ``-d`` option.
394  This only has an effect when using TCG, not with KVM or other accelerators.
395
396  If called with option off, the emulation returns to normal mode.
397ERST
398
399    {
400        .name       = "singlestep",
401        .args_type  = "option:s?",
402        .params     = "[on|off]",
403        .help       = "deprecated synonym for one-insn-per-tb",
404        .cmd        = hmp_one_insn_per_tb,
405    },
406
407SRST
408``singlestep [off]``
409  This is a deprecated synonym for the one-insn-per-tb command.
410ERST
411
412    {
413        .name       = "stop|s",
414        .args_type  = "",
415        .params     = "",
416        .help       = "stop emulation",
417        .cmd        = hmp_stop,
418    },
419
420SRST
421``stop`` or ``s``
422  Stop emulation.
423ERST
424
425    {
426        .name       = "cont|c",
427        .args_type  = "",
428        .params     = "",
429        .help       = "resume emulation",
430        .cmd        = hmp_cont,
431    },
432
433SRST
434``cont`` or ``c``
435  Resume emulation.
436ERST
437
438    {
439        .name       = "system_wakeup",
440        .args_type  = "",
441        .params     = "",
442        .help       = "wakeup guest from suspend",
443        .cmd        = hmp_system_wakeup,
444    },
445
446SRST
447``system_wakeup``
448  Wakeup guest from suspend.
449ERST
450
451    {
452        .name       = "gdbserver",
453        .args_type  = "device:s?",
454        .params     = "[device]",
455        .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
456        .cmd        = hmp_gdbserver,
457    },
458
459SRST
460``gdbserver`` [*port*]
461  Start gdbserver session (default *port*\=1234)
462ERST
463
464    {
465        .name       = "x",
466        .args_type  = "fmt:/,addr:l",
467        .params     = "/fmt addr",
468        .help       = "virtual memory dump starting at 'addr'",
469        .cmd        = hmp_memory_dump,
470    },
471
472SRST
473``x/``\ *fmt* *addr*
474  Virtual memory dump starting at *addr*.
475ERST
476
477    {
478        .name       = "xp",
479        .args_type  = "fmt:/,addr:l",
480        .params     = "/fmt addr",
481        .help       = "physical memory dump starting at 'addr'",
482        .cmd        = hmp_physical_memory_dump,
483    },
484
485SRST
486``xp /``\ *fmt* *addr*
487  Physical memory dump starting at *addr*.
488
489  *fmt* is a format which tells the command how to format the
490  data. Its syntax is: ``/{count}{format}{size}``
491
492  *count*
493    is the number of items to be dumped.
494  *format*
495    can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
496    c (char) or i (asm instruction).
497  *size*
498    can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
499    ``h`` or ``w`` can be specified with the ``i`` format to
500    respectively select 16 or 32 bit code instruction size.
501
502  Examples:
503
504  Dump 10 instructions at the current instruction pointer::
505
506    (qemu) x/10i $eip
507    0x90107063:  ret
508    0x90107064:  sti
509    0x90107065:  lea    0x0(%esi,1),%esi
510    0x90107069:  lea    0x0(%edi,1),%edi
511    0x90107070:  ret
512    0x90107071:  jmp    0x90107080
513    0x90107073:  nop
514    0x90107074:  nop
515    0x90107075:  nop
516    0x90107076:  nop
517
518  Dump 80 16 bit values at the start of the video memory::
519
520    (qemu) xp/80hx 0xb8000
521    0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
522    0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
523    0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
524    0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
525    0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
526    0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
527    0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
528    0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
529    0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
530    0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
531
532ERST
533
534    {
535        .name       = "gpa2hva",
536        .args_type  = "addr:l",
537        .params     = "addr",
538        .help       = "print the host virtual address corresponding to a guest physical address",
539        .cmd        = hmp_gpa2hva,
540    },
541
542SRST
543``gpa2hva`` *addr*
544  Print the host virtual address at which the guest's physical address *addr*
545  is mapped.
546ERST
547
548#ifdef CONFIG_LINUX
549    {
550        .name       = "gpa2hpa",
551        .args_type  = "addr:l",
552        .params     = "addr",
553        .help       = "print the host physical address corresponding to a guest physical address",
554        .cmd        = hmp_gpa2hpa,
555    },
556#endif
557
558SRST
559``gpa2hpa`` *addr*
560  Print the host physical address at which the guest's physical address *addr*
561  is mapped.
562ERST
563
564    {
565        .name       = "gva2gpa",
566        .args_type  = "addr:l",
567        .params     = "addr",
568        .help       = "print the guest physical address corresponding to a guest virtual address",
569        .cmd        = hmp_gva2gpa,
570    },
571
572SRST
573``gva2gpa`` *addr*
574  Print the guest physical address at which the guest's virtual address *addr*
575  is mapped based on the mapping for the current CPU.
576ERST
577
578    {
579        .name       = "print|p",
580        .args_type  = "fmt:/,val:l",
581        .params     = "/fmt expr",
582        .help       = "print expression value (use $reg for CPU register access)",
583        .cmd        = hmp_print,
584    },
585
586SRST
587``print`` or ``p/``\ *fmt* *expr*
588  Print expression value. Only the *format* part of *fmt* is
589  used.
590ERST
591
592    {
593        .name       = "i",
594        .args_type  = "fmt:/,addr:i,index:i.",
595        .params     = "/fmt addr",
596        .help       = "I/O port read",
597        .cmd        = hmp_ioport_read,
598    },
599
600SRST
601``i/``\ *fmt* *addr* [.\ *index*\ ]
602  Read I/O port.
603ERST
604
605    {
606        .name       = "o",
607        .args_type  = "fmt:/,addr:i,val:i",
608        .params     = "/fmt addr value",
609        .help       = "I/O port write",
610        .cmd        = hmp_ioport_write,
611    },
612
613SRST
614``o/``\ *fmt* *addr* *val*
615  Write to I/O port.
616ERST
617
618    {
619        .name       = "sendkey",
620        .args_type  = "keys:s,hold-time:i?",
621        .params     = "keys [hold_ms]",
622        .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
623        .cmd        = hmp_sendkey,
624        .command_completion = sendkey_completion,
625    },
626
627SRST
628``sendkey`` *keys*
629  Send *keys* to the guest. *keys* could be the name of the
630  key or the raw value in hexadecimal format. Use ``-`` to press
631  several keys simultaneously. Example::
632
633    sendkey ctrl-alt-f1
634
635  This command is useful to send keys that your graphical user interface
636  intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
637ERST
638    {
639        .name       = "sync-profile",
640        .args_type  = "op:s?",
641        .params     = "[on|off|reset]",
642        .help       = "enable, disable or reset synchronization profiling. "
643                      "With no arguments, prints whether profiling is on or off.",
644        .cmd        = hmp_sync_profile,
645    },
646
647SRST
648``sync-profile [on|off|reset]``
649  Enable, disable or reset synchronization profiling. With no arguments, prints
650  whether profiling is on or off.
651ERST
652
653    {
654        .name       = "system_reset",
655        .args_type  = "",
656        .params     = "",
657        .help       = "reset the system",
658        .cmd        = hmp_system_reset,
659    },
660
661SRST
662``system_reset``
663  Reset the system.
664ERST
665
666    {
667        .name       = "system_powerdown",
668        .args_type  = "",
669        .params     = "",
670        .help       = "send system power down event",
671        .cmd        = hmp_system_powerdown,
672    },
673
674SRST
675``system_powerdown``
676  Power down the system (if supported).
677ERST
678
679    {
680        .name       = "sum",
681        .args_type  = "start:i,size:i",
682        .params     = "addr size",
683        .help       = "compute the checksum of a memory region",
684        .cmd        = hmp_sum,
685    },
686
687SRST
688``sum`` *addr* *size*
689  Compute the checksum of a memory region.
690ERST
691
692    {
693        .name       = "device_add",
694        .args_type  = "device:O",
695        .params     = "driver[,prop=value][,...]",
696        .help       = "add device, like -device on the command line",
697        .cmd        = hmp_device_add,
698        .command_completion = device_add_completion,
699    },
700
701SRST
702``device_add`` *config*
703  Add device.
704ERST
705
706    {
707        .name       = "device_del",
708        .args_type  = "id:s",
709        .params     = "device",
710        .help       = "remove device",
711        .cmd        = hmp_device_del,
712        .command_completion = device_del_completion,
713    },
714
715SRST
716``device_del`` *id*
717  Remove device *id*. *id* may be a short ID
718  or a QOM object path.
719ERST
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
729SRST
730``cpu`` *index*
731  Set the default CPU.
732ERST
733
734    {
735        .name       = "mouse_move",
736        .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
737        .params     = "dx dy [dz]",
738        .help       = "send mouse move events",
739        .cmd        = hmp_mouse_move,
740    },
741
742SRST
743``mouse_move`` *dx* *dy* [*dz*]
744  Move the active mouse to the specified coordinates *dx* *dy*
745  with optional scroll axis *dz*.
746ERST
747
748    {
749        .name       = "mouse_button",
750        .args_type  = "button_state:i",
751        .params     = "state",
752        .help       = "change mouse button state (1=L, 2=M, 4=R)",
753        .cmd        = hmp_mouse_button,
754    },
755
756SRST
757``mouse_button`` *val*
758  Change the active mouse button state *val* (1=L, 2=M, 4=R).
759ERST
760
761    {
762        .name       = "mouse_set",
763        .args_type  = "index:i",
764        .params     = "index",
765        .help       = "set which mouse device receives events",
766        .cmd        = hmp_mouse_set,
767    },
768
769SRST
770``mouse_set`` *index*
771  Set which mouse device receives events at given *index*, index
772  can be obtained with::
773
774    info mice
775
776ERST
777
778    {
779        .name       = "wavcapture",
780        .args_type  = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
781        .params     = "path audiodev [frequency [bits [channels]]]",
782        .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
783        .cmd        = hmp_wavcapture,
784    },
785SRST
786``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
787  Capture audio into *filename* from *audiodev*, using sample rate
788  *frequency* bits per sample *bits* and number of channels
789  *channels*.
790
791  Defaults:
792
793  - Sample rate = 44100 Hz - CD quality
794  - Bits = 16
795  - Number of channels = 2 - Stereo
796ERST
797
798    {
799        .name       = "stopcapture",
800        .args_type  = "n:i",
801        .params     = "capture index",
802        .help       = "stop capture",
803        .cmd        = hmp_stopcapture,
804    },
805SRST
806``stopcapture`` *index*
807  Stop capture with a given *index*, index can be obtained with::
808
809    info capture
810
811ERST
812
813    {
814        .name       = "memsave",
815        .args_type  = "val:l,size:i,filename:s",
816        .params     = "addr size file",
817        .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
818        .cmd        = hmp_memsave,
819    },
820
821SRST
822``memsave`` *addr* *size* *file*
823  save to disk virtual memory dump starting at *addr* of size *size*.
824ERST
825
826    {
827        .name       = "pmemsave",
828        .args_type  = "val:l,size:i,filename:s",
829        .params     = "addr size file",
830        .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
831        .cmd        = hmp_pmemsave,
832    },
833
834SRST
835``pmemsave`` *addr* *size* *file*
836  save to disk physical memory dump starting at *addr* of size *size*.
837ERST
838
839    {
840        .name       = "boot_set",
841        .args_type  = "bootdevice:s",
842        .params     = "bootdevice",
843        .help       = "define new values for the boot device list",
844        .cmd        = hmp_boot_set,
845    },
846
847SRST
848``boot_set`` *bootdevicelist*
849  Define new values for the boot device list. Those values will override
850  the values specified on the command line through the ``-boot`` option.
851
852  The values that can be specified here depend on the machine type, but are
853  the same that can be specified in the ``-boot`` command line option.
854ERST
855
856    {
857        .name       = "nmi",
858        .args_type  = "",
859        .params     = "",
860        .help       = "inject an NMI",
861        .cmd        = hmp_nmi,
862    },
863SRST
864``nmi`` *cpu*
865  Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
866ERST
867
868    {
869        .name       = "ringbuf_write",
870        .args_type  = "device:s,data:s",
871        .params     = "device data",
872        .help       = "Write to a ring buffer character device",
873        .cmd        = hmp_ringbuf_write,
874        .command_completion = ringbuf_write_completion,
875    },
876
877SRST
878``ringbuf_write`` *device* *data*
879  Write *data* to ring buffer character device *device*.
880  *data* must be a UTF-8 string.
881ERST
882
883    {
884        .name       = "ringbuf_read",
885        .args_type  = "device:s,size:i",
886        .params     = "device size",
887        .help       = "Read from a ring buffer character device",
888        .cmd        = hmp_ringbuf_read,
889        .command_completion = ringbuf_write_completion,
890    },
891
892SRST
893``ringbuf_read`` *device*
894  Read and print up to *size* bytes from ring buffer character
895  device *device*.
896  Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
897  character code in hexadecimal.  Character ``\`` is printed ``\\``.
898  Bug: can screw up when the buffer contains invalid UTF-8 sequences,
899  NUL characters, after the ring buffer lost data, and when reading
900  stops because the size limit is reached.
901ERST
902
903    {
904        .name       = "announce_self",
905        .args_type  = "interfaces:s?,id:s?",
906        .params     = "[interfaces] [id]",
907        .help       = "Trigger GARP/RARP announcements",
908        .cmd        = hmp_announce_self,
909    },
910
911SRST
912``announce_self``
913  Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
914  updating the network infrastructure after a reconfiguration or some forms
915  of migration. The timings of the round are set by the migration announce
916  parameters. An optional comma separated *interfaces* list restricts the
917  announce to the named set of interfaces. An optional *id* can be used to
918  start a separate announce timer and to change the parameters of it later.
919ERST
920
921    {
922        .name       = "migrate",
923        .args_type  = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
924        .params     = "[-d] [-b] [-i] [-r] uri",
925        .help       = "migrate to URI (using -d to not wait for completion)"
926		      "\n\t\t\t -b for migration without shared storage with"
927		      " full copy of disk\n\t\t\t -i for migration without "
928		      "shared storage with incremental copy of disk "
929		      "(base image shared between src and destination)"
930                      "\n\t\t\t -r to resume a paused migration",
931        .cmd        = hmp_migrate,
932    },
933
934
935SRST
936``migrate [-d] [-b] [-i]`` *uri*
937  Migrate to *uri* (using -d to not wait for completion).
938
939  ``-b``
940    for migration with full copy of disk
941  ``-i``
942    for migration with incremental copy of disk (base image is shared)
943ERST
944
945    {
946        .name       = "migrate_cancel",
947        .args_type  = "",
948        .params     = "",
949        .help       = "cancel the current VM migration",
950        .cmd        = hmp_migrate_cancel,
951    },
952
953SRST
954``migrate_cancel``
955  Cancel the current VM migration.
956ERST
957
958    {
959        .name       = "migrate_continue",
960        .args_type  = "state:s",
961        .params     = "state",
962        .help       = "Continue migration from the given paused state",
963        .cmd        = hmp_migrate_continue,
964    },
965SRST
966``migrate_continue`` *state*
967  Continue migration from the paused state *state*
968ERST
969
970    {
971        .name       = "migrate_incoming",
972        .args_type  = "uri:s",
973        .params     = "uri",
974        .help       = "Continue an incoming migration from an -incoming defer",
975        .cmd        = hmp_migrate_incoming,
976    },
977
978SRST
979``migrate_incoming`` *uri*
980  Continue an incoming migration using the *uri* (that has the same syntax
981  as the ``-incoming`` option).
982ERST
983
984    {
985        .name       = "migrate_recover",
986        .args_type  = "uri:s",
987        .params     = "uri",
988        .help       = "Continue a paused incoming postcopy migration",
989        .cmd        = hmp_migrate_recover,
990    },
991
992SRST
993``migrate_recover`` *uri*
994  Continue a paused incoming postcopy migration using the *uri*.
995ERST
996
997    {
998        .name       = "migrate_pause",
999        .args_type  = "",
1000        .params     = "",
1001        .help       = "Pause an ongoing migration (postcopy-only)",
1002        .cmd        = hmp_migrate_pause,
1003    },
1004
1005SRST
1006``migrate_pause``
1007  Pause an ongoing migration.  Currently it only supports postcopy.
1008ERST
1009
1010    {
1011        .name       = "migrate_set_capability",
1012        .args_type  = "capability:s,state:b",
1013        .params     = "capability state",
1014        .help       = "Enable/Disable the usage of a capability for migration",
1015        .cmd        = hmp_migrate_set_capability,
1016        .command_completion = migrate_set_capability_completion,
1017    },
1018
1019SRST
1020``migrate_set_capability`` *capability* *state*
1021  Enable/Disable the usage of a capability *capability* for migration.
1022ERST
1023
1024    {
1025        .name       = "migrate_set_parameter",
1026        .args_type  = "parameter:s,value:s",
1027        .params     = "parameter value",
1028        .help       = "Set the parameter for migration",
1029        .cmd        = hmp_migrate_set_parameter,
1030        .command_completion = migrate_set_parameter_completion,
1031    },
1032
1033SRST
1034``migrate_set_parameter`` *parameter* *value*
1035  Set the parameter *parameter* for migration.
1036ERST
1037
1038    {
1039        .name       = "migrate_start_postcopy",
1040        .args_type  = "",
1041        .params     = "",
1042        .help       = "Followup to a migration command to switch the migration"
1043                      " to postcopy mode. The postcopy-ram capability must "
1044                      "be set on both source and destination before the "
1045                      "original migration command .",
1046        .cmd        = hmp_migrate_start_postcopy,
1047    },
1048
1049SRST
1050``migrate_start_postcopy``
1051  Switch in-progress migration to postcopy mode. Ignored after the end of
1052  migration (or once already in postcopy).
1053ERST
1054
1055#ifdef CONFIG_REPLICATION
1056    {
1057        .name       = "x_colo_lost_heartbeat",
1058        .args_type  = "",
1059        .params     = "",
1060        .help       = "Tell COLO that heartbeat is lost,\n\t\t\t"
1061                      "a failover or takeover is needed.",
1062        .cmd = hmp_x_colo_lost_heartbeat,
1063    },
1064#endif
1065
1066SRST
1067``x_colo_lost_heartbeat``
1068  Tell COLO that heartbeat is lost, a failover or takeover is needed.
1069ERST
1070
1071    {
1072        .name       = "client_migrate_info",
1073        .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1074        .params     = "protocol hostname port tls-port cert-subject",
1075        .help       = "set migration information for remote display",
1076        .cmd        = hmp_client_migrate_info,
1077    },
1078
1079SRST
1080``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1081  Set migration information for remote display.  This makes the server
1082  ask the client to automatically reconnect using the new parameters
1083  once migration finished successfully.  Only implemented for SPICE.
1084ERST
1085
1086    {
1087        .name       = "dump-guest-memory",
1088        .args_type  = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1089        .params     = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1090        .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1091                      "-p: do paging to get guest's memory mapping.\n\t\t\t"
1092                      "-d: return immediately (do not wait for completion).\n\t\t\t"
1093                      "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1094                      "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1095                      "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1096                      "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1097                      "    for Windows x86 and x64 guests with vmcoreinfo driver only.\n\t\t\t"
1098                      "begin: the starting physical address.\n\t\t\t"
1099                      "length: the memory size, in bytes.",
1100        .cmd        = hmp_dump_guest_memory,
1101    },
1102
1103SRST
1104``dump-guest-memory [-p]`` *filename* *begin* *length*
1105  \
1106``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1107  Dump guest memory to *protocol*. The file can be processed with crash or
1108  gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1109
1110  ``-p``
1111    do paging to get guest's memory mapping.
1112  ``-z``
1113    dump in kdump-compressed format, with zlib compression.
1114  ``-l``
1115    dump in kdump-compressed format, with lzo compression.
1116  ``-s``
1117    dump in kdump-compressed format, with snappy compression.
1118  ``-w``
1119    dump in Windows crashdump format (can be used instead of ELF-dump converting),
1120    for Windows x64 guests with vmcoreinfo driver only
1121  *filename*
1122    dump file name.
1123  *begin*
1124    the starting physical address. It's optional, and should be
1125    specified together with *length*.
1126  *length*
1127    the memory size, in bytes. It's optional, and should be specified
1128    together with *begin*.
1129
1130ERST
1131
1132#if defined(TARGET_S390X)
1133    {
1134        .name       = "dump-skeys",
1135        .args_type  = "filename:F",
1136        .params     = "",
1137        .help       = "Save guest storage keys into file 'filename'.\n",
1138        .cmd        = hmp_dump_skeys,
1139    },
1140#endif
1141
1142SRST
1143``dump-skeys`` *filename*
1144  Save guest storage keys to a file.
1145ERST
1146
1147#if defined(TARGET_S390X)
1148    {
1149        .name       = "migration_mode",
1150        .args_type  = "mode:i",
1151        .params     = "mode",
1152        .help       = "Enables or disables migration mode\n",
1153        .cmd        = hmp_migrationmode,
1154    },
1155#endif
1156
1157SRST
1158``migration_mode`` *mode*
1159  Enables or disables migration mode.
1160ERST
1161
1162    {
1163        .name       = "snapshot_blkdev",
1164        .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1165        .params     = "[-n] device [new-image-file] [format]",
1166        .help       = "initiates a live snapshot\n\t\t\t"
1167                      "of device. If a new image file is specified, the\n\t\t\t"
1168                      "new image file will become the new root image.\n\t\t\t"
1169                      "If format is specified, the snapshot file will\n\t\t\t"
1170                      "be created in that format.\n\t\t\t"
1171                      "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1172                      "to reuse the image found in new-image-file, instead of\n\t\t\t"
1173                      "recreating it from scratch.",
1174        .cmd        = hmp_snapshot_blkdev,
1175    },
1176
1177SRST
1178``snapshot_blkdev``
1179  Snapshot device, using snapshot file as target if provided
1180ERST
1181
1182    {
1183        .name       = "snapshot_blkdev_internal",
1184        .args_type  = "device:B,name:s",
1185        .params     = "device name",
1186        .help       = "take an internal snapshot of device.\n\t\t\t"
1187                      "The format of the image used by device must\n\t\t\t"
1188                      "support it, such as qcow2.\n\t\t\t",
1189        .cmd        = hmp_snapshot_blkdev_internal,
1190    },
1191
1192SRST
1193``snapshot_blkdev_internal``
1194  Take an internal snapshot on device if it support
1195ERST
1196
1197    {
1198        .name       = "snapshot_delete_blkdev_internal",
1199        .args_type  = "device:B,name:s,id:s?",
1200        .params     = "device name [id]",
1201        .help       = "delete an internal snapshot of device.\n\t\t\t"
1202                      "If id is specified, qemu will try delete\n\t\t\t"
1203                      "the snapshot matching both id and name.\n\t\t\t"
1204                      "The format of the image used by device must\n\t\t\t"
1205                      "support it, such as qcow2.\n\t\t\t",
1206        .cmd        = hmp_snapshot_delete_blkdev_internal,
1207    },
1208
1209SRST
1210``snapshot_delete_blkdev_internal``
1211  Delete an internal snapshot on device if it support
1212ERST
1213
1214    {
1215        .name       = "drive_mirror",
1216        .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1217        .params     = "[-n] [-f] device target [format]",
1218        .help       = "initiates live storage\n\t\t\t"
1219                      "migration for a device. The device's contents are\n\t\t\t"
1220                      "copied to the new image file, including data that\n\t\t\t"
1221                      "is written after the command is started.\n\t\t\t"
1222                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1223                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1224                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1225                      "so that the result does not need a backing file.\n\t\t\t",
1226        .cmd        = hmp_drive_mirror,
1227    },
1228SRST
1229``drive_mirror``
1230  Start mirroring a block device's writes to a new destination,
1231  using the specified target.
1232ERST
1233
1234    {
1235        .name       = "drive_backup",
1236        .args_type  = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1237        .params     = "[-n] [-f] [-c] device target [format]",
1238        .help       = "initiates a point-in-time\n\t\t\t"
1239                      "copy for a device. The device's contents are\n\t\t\t"
1240                      "copied to the new image file, excluding data that\n\t\t\t"
1241                      "is written after the command is started.\n\t\t\t"
1242                      "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1243                      "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1244                      "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1245                      "so that the result does not need a backing file.\n\t\t\t"
1246                      "The -c flag requests QEMU to compress backup data\n\t\t\t"
1247                      "(if the target format supports it).\n\t\t\t",
1248        .cmd        = hmp_drive_backup,
1249    },
1250SRST
1251``drive_backup``
1252  Start a point-in-time copy of a block device to a specified target.
1253ERST
1254
1255    {
1256        .name       = "drive_add",
1257        .args_type  = "node:-n,pci_addr:s,opts:s",
1258        .params     = "[-n] [[<domain>:]<bus>:]<slot>\n"
1259                      "[file=file][,if=type][,bus=n]\n"
1260                      "[,unit=m][,media=d][,index=i]\n"
1261                      "[,snapshot=on|off][,cache=on|off]\n"
1262                      "[,readonly=on|off][,copy-on-read=on|off]",
1263        .help       = "add drive to PCI storage controller",
1264        .cmd        = hmp_drive_add,
1265    },
1266
1267SRST
1268``drive_add``
1269  Add drive to PCI storage controller.
1270ERST
1271
1272    {
1273        .name       = "pcie_aer_inject_error",
1274        .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1275	              "id:s,error_status:s,"
1276	              "header0:i?,header1:i?,header2:i?,header3:i?,"
1277	              "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1278        .params     = "[-a] [-c] id "
1279                      "<error_status> [<tlp header> [<tlp header prefix>]]",
1280        .help       = "inject pcie aer error\n\t\t\t"
1281	              " -a for advisory non fatal error\n\t\t\t"
1282	              " -c for correctable error\n\t\t\t"
1283                      "<id> = qdev device id\n\t\t\t"
1284                      "<error_status> = error string or 32bit\n\t\t\t"
1285                      "<tlp header> = 32bit x 4\n\t\t\t"
1286                      "<tlp header prefix> = 32bit x 4",
1287        .cmd        = hmp_pcie_aer_inject_error,
1288    },
1289
1290SRST
1291``pcie_aer_inject_error``
1292  Inject PCIe AER error
1293ERST
1294
1295    {
1296        .name       = "netdev_add",
1297        .args_type  = "netdev:O",
1298        .params     = "[user|tap|socket|stream|dgram|vde|bridge|hubport|netmap|vhost-user"
1299#ifdef CONFIG_VMNET
1300                      "|vmnet-host|vmnet-shared|vmnet-bridged"
1301#endif
1302                      "],id=str[,prop=value][,...]",
1303        .help       = "add host network device",
1304        .cmd        = hmp_netdev_add,
1305        .command_completion = netdev_add_completion,
1306        .flags      = "p",
1307    },
1308
1309SRST
1310``netdev_add``
1311  Add host network device.
1312ERST
1313
1314    {
1315        .name       = "netdev_del",
1316        .args_type  = "id:s",
1317        .params     = "id",
1318        .help       = "remove host network device",
1319        .cmd        = hmp_netdev_del,
1320        .command_completion = netdev_del_completion,
1321        .flags      = "p",
1322    },
1323
1324SRST
1325``netdev_del``
1326  Remove host network device.
1327ERST
1328
1329    {
1330        .name       = "object_add",
1331        .args_type  = "object:S",
1332        .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1333        .help       = "create QOM object",
1334        .cmd        = hmp_object_add,
1335        .command_completion = object_add_completion,
1336        .flags      = "p",
1337    },
1338
1339SRST
1340``object_add``
1341  Create QOM object.
1342ERST
1343
1344    {
1345        .name       = "object_del",
1346        .args_type  = "id:s",
1347        .params     = "id",
1348        .help       = "destroy QOM object",
1349        .cmd        = hmp_object_del,
1350        .command_completion = object_del_completion,
1351        .flags      = "p",
1352    },
1353
1354SRST
1355``object_del``
1356  Destroy QOM object.
1357ERST
1358
1359#ifdef CONFIG_SLIRP
1360    {
1361        .name       = "hostfwd_add",
1362        .args_type  = "arg1:s,arg2:s?",
1363        .params     = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1364        .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1365        .cmd        = hmp_hostfwd_add,
1366    },
1367#endif
1368SRST
1369``hostfwd_add``
1370  Redirect TCP or UDP connections from host to guest (requires -net user).
1371ERST
1372
1373#ifdef CONFIG_SLIRP
1374    {
1375        .name       = "hostfwd_remove",
1376        .args_type  = "arg1:s,arg2:s?",
1377        .params     = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1378        .help       = "remove host-to-guest TCP or UDP redirection",
1379        .cmd        = hmp_hostfwd_remove,
1380    },
1381
1382#endif
1383SRST
1384``hostfwd_remove``
1385  Remove host-to-guest TCP or UDP redirection.
1386ERST
1387
1388    {
1389        .name       = "balloon",
1390        .args_type  = "value:M",
1391        .params     = "target",
1392        .help       = "request VM to change its memory allocation (in MB)",
1393        .cmd        = hmp_balloon,
1394    },
1395
1396SRST
1397``balloon`` *value*
1398  Request VM to change its memory allocation to *value* (in MB).
1399ERST
1400
1401    {
1402        .name       = "set_link",
1403        .args_type  = "name:s,up:b",
1404        .params     = "name on|off",
1405        .help       = "change the link status of a network adapter",
1406        .cmd        = hmp_set_link,
1407        .command_completion = set_link_completion,
1408    },
1409
1410SRST
1411``set_link`` *name* ``[on|off]``
1412  Switch link *name* on (i.e. up) or off (i.e. down).
1413ERST
1414
1415    {
1416        .name       = "watchdog_action",
1417        .args_type  = "action:s",
1418        .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1419        .help       = "change watchdog action",
1420        .cmd        = hmp_watchdog_action,
1421        .command_completion = watchdog_action_completion,
1422    },
1423
1424SRST
1425``watchdog_action``
1426  Change watchdog action.
1427ERST
1428
1429    {
1430        .name       = "nbd_server_start",
1431        .args_type  = "all:-a,writable:-w,uri:s",
1432        .params     = "nbd_server_start [-a] [-w] host:port",
1433        .help       = "serve block devices on the given host and port",
1434        .cmd        = hmp_nbd_server_start,
1435        .flags      = "p",
1436    },
1437SRST
1438``nbd_server_start`` *host*:*port*
1439  Start an NBD server on the given host and/or port.  If the ``-a``
1440  option is included, all of the virtual machine's block devices that
1441  have an inserted media on them are automatically exported; in this case,
1442  the ``-w`` option makes the devices writable too.
1443ERST
1444
1445    {
1446        .name       = "nbd_server_add",
1447        .args_type  = "writable:-w,device:B,name:s?",
1448        .params     = "nbd_server_add [-w] device [name]",
1449        .help       = "export a block device via NBD",
1450        .cmd        = hmp_nbd_server_add,
1451        .flags      = "p",
1452    },
1453SRST
1454``nbd_server_add`` *device* [ *name* ]
1455  Export a block device through QEMU's NBD server, which must be started
1456  beforehand with ``nbd_server_start``.  The ``-w`` option makes the
1457  exported device writable too.  The export name is controlled by *name*,
1458  defaulting to *device*.
1459ERST
1460
1461    {
1462        .name       = "nbd_server_remove",
1463        .args_type  = "force:-f,name:s",
1464        .params     = "nbd_server_remove [-f] name",
1465        .help       = "remove an export previously exposed via NBD",
1466        .cmd        = hmp_nbd_server_remove,
1467        .flags      = "p",
1468    },
1469SRST
1470``nbd_server_remove [-f]`` *name*
1471  Stop exporting a block device through QEMU's NBD server, which was
1472  previously started with ``nbd_server_add``.  The ``-f``
1473  option forces the server to drop the export immediately even if
1474  clients are connected; otherwise the command fails unless there are no
1475  clients.
1476ERST
1477
1478    {
1479        .name       = "nbd_server_stop",
1480        .args_type  = "",
1481        .params     = "nbd_server_stop",
1482        .help       = "stop serving block devices using the NBD protocol",
1483        .cmd        = hmp_nbd_server_stop,
1484        .flags      = "p",
1485    },
1486SRST
1487``nbd_server_stop``
1488  Stop the QEMU embedded NBD server.
1489ERST
1490
1491
1492#if defined(TARGET_I386)
1493
1494    {
1495        .name       = "mce",
1496        .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1497        .params     = "[-b] cpu bank status mcgstatus addr misc",
1498        .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1499        .cmd        = hmp_mce,
1500    },
1501
1502#endif
1503SRST
1504``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1505  Inject an MCE on the given CPU (x86 only).
1506ERST
1507
1508#ifdef CONFIG_POSIX
1509    {
1510        .name       = "getfd",
1511        .args_type  = "fdname:s",
1512        .params     = "getfd name",
1513        .help       = "receive a file descriptor via SCM rights and assign it a name",
1514        .cmd        = hmp_getfd,
1515        .flags      = "p",
1516    },
1517
1518SRST
1519``getfd`` *fdname*
1520  If a file descriptor is passed alongside this command using the SCM_RIGHTS
1521  mechanism on unix sockets, it is stored using the name *fdname* for
1522  later use by other monitor commands.
1523ERST
1524#endif
1525
1526    {
1527        .name       = "closefd",
1528        .args_type  = "fdname:s",
1529        .params     = "closefd name",
1530        .help       = "close a file descriptor previously passed via SCM rights",
1531        .cmd        = hmp_closefd,
1532        .flags      = "p",
1533    },
1534
1535SRST
1536``closefd`` *fdname*
1537  Close the file descriptor previously assigned to *fdname* using the
1538  ``getfd`` command. This is only needed if the file descriptor was never
1539  used by another monitor command.
1540ERST
1541
1542    {
1543        .name       = "block_set_io_throttle",
1544        .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1545        .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1546        .help       = "change I/O throttle limits for a block drive",
1547        .cmd        = hmp_block_set_io_throttle,
1548        .flags      = "p",
1549    },
1550
1551SRST
1552``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1553  Change I/O throttle limits for a block drive to
1554  *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1555  *device* can be a block device name, a qdev ID or a QOM path.
1556ERST
1557
1558    {
1559        .name       = "set_password",
1560        .args_type  = "protocol:s,password:s,display:-ds,connected:s?",
1561        .params     = "protocol password [-d display] [action-if-connected]",
1562        .help       = "set spice/vnc password",
1563        .cmd        = hmp_set_password,
1564    },
1565
1566SRST
1567``set_password [ vnc | spice ] password [ -d display ] [ action-if-connected ]``
1568  Change spice/vnc password.  *display* can be used with 'vnc' to specify
1569  which display to set the password on.  *action-if-connected* specifies
1570  what should happen in case a connection is established: *fail* makes
1571  the password change fail.  *disconnect* changes the password and
1572  disconnects the client.  *keep* changes the password and keeps the
1573  connection up.  *keep* is the default.
1574ERST
1575
1576    {
1577        .name       = "expire_password",
1578        .args_type  = "protocol:s,time:s,display:-ds",
1579        .params     = "protocol time [-d display]",
1580        .help       = "set spice/vnc password expire-time",
1581        .cmd        = hmp_expire_password,
1582    },
1583
1584SRST
1585``expire_password [ vnc | spice ] expire-time [ -d display ]``
1586  Specify when a password for spice/vnc becomes invalid.
1587  *display* behaves the same as in ``set_password``.
1588  *expire-time* accepts:
1589
1590  ``now``
1591    Invalidate password instantly.
1592  ``never``
1593    Password stays valid forever.
1594  ``+``\ *nsec*
1595    Password stays valid for *nsec* seconds starting now.
1596  *nsec*
1597    Password is invalidated at the given time.  *nsec* are the seconds
1598    passed since 1970, i.e. unix epoch.
1599
1600ERST
1601
1602    {
1603        .name       = "chardev-add",
1604        .args_type  = "args:s",
1605        .params     = "args",
1606        .help       = "add chardev",
1607        .cmd        = hmp_chardev_add,
1608        .command_completion = chardev_add_completion,
1609    },
1610
1611SRST
1612``chardev-add`` *args*
1613  chardev-add accepts the same parameters as the -chardev command line switch.
1614ERST
1615
1616    {
1617        .name       = "chardev-change",
1618        .args_type  = "id:s,args:s",
1619        .params     = "id args",
1620        .help       = "change chardev",
1621        .cmd        = hmp_chardev_change,
1622    },
1623
1624SRST
1625``chardev-change`` *args*
1626  chardev-change accepts existing chardev *id* and then the same arguments
1627  as the -chardev command line switch (except for "id").
1628ERST
1629
1630    {
1631        .name       = "chardev-remove",
1632        .args_type  = "id:s",
1633        .params     = "id",
1634        .help       = "remove chardev",
1635        .cmd        = hmp_chardev_remove,
1636        .command_completion = chardev_remove_completion,
1637    },
1638
1639SRST
1640``chardev-remove`` *id*
1641  Removes the chardev *id*.
1642ERST
1643
1644    {
1645        .name       = "chardev-send-break",
1646        .args_type  = "id:s",
1647        .params     = "id",
1648        .help       = "send a break on chardev",
1649        .cmd        = hmp_chardev_send_break,
1650        .command_completion = chardev_remove_completion,
1651    },
1652
1653SRST
1654``chardev-send-break`` *id*
1655  Send a break on the chardev *id*.
1656ERST
1657
1658    {
1659        .name       = "qemu-io",
1660        .args_type  = "qdev:-d,device:B,command:s",
1661        .params     = "[-d] [device] \"[command]\"",
1662        .help       = "run a qemu-io command on a block device\n\t\t\t"
1663                      "-d: [device] is a device ID rather than a "
1664                      "drive ID or node name",
1665        .cmd        = hmp_qemu_io,
1666    },
1667
1668SRST
1669``qemu-io`` *device* *command*
1670  Executes a qemu-io command on the given block device.
1671ERST
1672
1673    {
1674        .name       = "qom-list",
1675        .args_type  = "path:s?",
1676        .params     = "path",
1677        .help       = "list QOM properties",
1678        .cmd        = hmp_qom_list,
1679        .flags      = "p",
1680    },
1681
1682SRST
1683``qom-list`` [*path*]
1684  Print QOM properties of object at location *path*
1685ERST
1686
1687    {
1688        .name       = "qom-get",
1689        .args_type  = "path:s,property:s",
1690        .params     = "path property",
1691        .help       = "print QOM property",
1692        .cmd        = hmp_qom_get,
1693        .flags      = "p",
1694    },
1695
1696SRST
1697``qom-get`` *path* *property*
1698  Print QOM property *property* of object at location *path*
1699ERST
1700
1701    {
1702        .name       = "qom-set",
1703        .args_type  = "json:-j,path:s,property:s,value:S",
1704        .params     = "[-j] path property value",
1705        .help       = "set QOM property.\n\t\t\t"
1706                      "-j: the value is specified in json format.",
1707        .cmd        = hmp_qom_set,
1708        .flags      = "p",
1709    },
1710
1711SRST
1712``qom-set`` *path* *property* *value*
1713  Set QOM property *property* of object at location *path* to value *value*
1714ERST
1715
1716    {
1717        .name       = "replay_break",
1718        .args_type  = "icount:l",
1719        .params     = "icount",
1720        .help       = "set breakpoint at the specified instruction count",
1721        .cmd        = hmp_replay_break,
1722    },
1723
1724SRST
1725``replay_break`` *icount*
1726  Set replay breakpoint at instruction count *icount*.
1727  Execution stops when the specified instruction is reached.
1728  There can be at most one breakpoint. When breakpoint is set, any prior
1729  one is removed.  The breakpoint may be set only in replay mode and only
1730  "in the future", i.e. at instruction counts greater than the current one.
1731  The current instruction count can be observed with ``info replay``.
1732ERST
1733
1734    {
1735        .name       = "replay_delete_break",
1736        .args_type  = "",
1737        .params     = "",
1738        .help       = "remove replay breakpoint",
1739        .cmd        = hmp_replay_delete_break,
1740    },
1741
1742SRST
1743``replay_delete_break``
1744  Remove replay breakpoint which was previously set with ``replay_break``.
1745  The command is ignored when there are no replay breakpoints.
1746ERST
1747
1748    {
1749        .name       = "replay_seek",
1750        .args_type  = "icount:l",
1751        .params     = "icount",
1752        .help       = "replay execution to the specified instruction count",
1753        .cmd        = hmp_replay_seek,
1754    },
1755
1756SRST
1757``replay_seek`` *icount*
1758  Automatically proceed to the instruction count *icount*, when
1759  replaying the execution. The command automatically loads nearest
1760  snapshot and replays the execution to find the desired instruction.
1761  When there is no preceding snapshot or the execution is not replayed,
1762  then the command fails.
1763  *icount* for the reference may be observed with ``info replay`` command.
1764ERST
1765
1766    {
1767        .name       = "calc_dirty_rate",
1768        .args_type  = "dirty_ring:-r,dirty_bitmap:-b,second:l,sample_pages_per_GB:l?",
1769        .params     = "[-r] [-b] second [sample_pages_per_GB]",
1770        .help       = "start a round of guest dirty rate measurement (using -r to"
1771                      "\n\t\t\t specify dirty ring as the method of calculation and"
1772                      "\n\t\t\t -b to specify dirty bitmap as method of calculation)",
1773        .cmd        = hmp_calc_dirty_rate,
1774    },
1775
1776SRST
1777``calc_dirty_rate`` *second*
1778  Start a round of dirty rate measurement with the period specified in *second*.
1779  The result of the dirty rate measurement may be observed with ``info
1780  dirty_rate`` command.
1781ERST
1782
1783    {
1784        .name       = "set_vcpu_dirty_limit",
1785        .args_type  = "dirty_rate:l,cpu_index:l?",
1786        .params     = "dirty_rate [cpu_index]",
1787        .help       = "set dirty page rate limit, use cpu_index to set limit"
1788                      "\n\t\t\t\t\t on a specified virtual cpu",
1789        .cmd        = hmp_set_vcpu_dirty_limit,
1790    },
1791
1792SRST
1793``set_vcpu_dirty_limit``
1794  Set dirty page rate limit on virtual CPU, the information about all the
1795  virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1796  command.
1797ERST
1798
1799    {
1800        .name       = "cancel_vcpu_dirty_limit",
1801        .args_type  = "cpu_index:l?",
1802        .params     = "[cpu_index]",
1803        .help       = "cancel dirty page rate limit, use cpu_index to cancel"
1804                      "\n\t\t\t\t\t limit on a specified virtual cpu",
1805        .cmd        = hmp_cancel_vcpu_dirty_limit,
1806    },
1807
1808SRST
1809``cancel_vcpu_dirty_limit``
1810  Cancel dirty page rate limit on virtual CPU, the information about all the
1811  virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit``
1812  command.
1813ERST
1814
1815    {
1816        .name       = "info",
1817        .args_type  = "item:s?",
1818        .params     = "[subcommand]",
1819        .help       = "show various information about the system state",
1820        .cmd        = hmp_info_help,
1821        .sub_table  = hmp_info_cmds,
1822        .flags      = "p",
1823    },
1824
1825#if defined(CONFIG_FDT)
1826    {
1827        .name       = "dumpdtb",
1828        .args_type  = "filename:F",
1829        .params     = "filename",
1830        .help       = "dump the FDT in dtb format to 'filename'",
1831        .cmd        = hmp_dumpdtb,
1832    },
1833
1834SRST
1835``dumpdtb`` *filename*
1836  Dump the FDT in dtb format to *filename*.
1837ERST
1838#endif
1839
1840#if defined(CONFIG_XEN_EMU)
1841    {
1842        .name       = "xen-event-inject",
1843        .args_type  = "port:i",
1844        .params     = "port",
1845        .help       = "inject event channel",
1846        .cmd        = hmp_xen_event_inject,
1847    },
1848
1849SRST
1850``xen-event-inject`` *port*
1851  Notify guest via event channel on port *port*.
1852ERST
1853
1854
1855    {
1856        .name       = "xen-event-list",
1857        .args_type  = "",
1858        .params     = "",
1859        .help       = "list event channel state",
1860        .cmd        = hmp_xen_event_list,
1861    },
1862
1863SRST
1864``xen-event-list``
1865  List event channels in the guest
1866ERST
1867#endif
1868