mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 09:55:55 +00:00
![Anthony Liguori](/assets/img/avatar_default.png)
kqemu introduces a number of restrictions on the i386 target. The worst is that it prevents large memory from working in the default build. Furthermore, kqemu is fundamentally flawed in a number of ways. It relies on the TSC as a time source which will not be reliable on a multiple processor system in userspace. Since most modern processors are multicore, this severely limits the utility of kqemu. kvm is a viable alternative for people looking to accelerate qemu and has the benefit of being supported by the upstream Linux kernel. If someone can implement work arounds to remove the restrictions introduced by kqemu, I'm happy to avoid and/or revert this patch. N.B. kqemu will still function in the 0.11 series but this patch removes it from the 0.12 series. Paul, please Ack or Nack this patch. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
650 lines
19 KiB
Haxe
650 lines
19 KiB
Haxe
HXCOMM Use DEFHEADING() to define headings in both help text and texi
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HXCOMM Text between STEXI and ETEXI are copied to texi version and
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HXCOMM discarded from C version
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HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
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HXCOMM monitor commands
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HXCOMM HXCOMM can be used for comments, discarded from both texi and C
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STEXI
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@table @option
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ETEXI
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{ "help|?", "s?", help_cmd, "[cmd]", "show the help" },
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STEXI
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@item help or ? [@var{cmd}]
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Show the help for all commands or just for command @var{cmd}.
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ETEXI
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{ "commit", "s", do_commit,
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"device|all", "commit changes to the disk images (if -snapshot is used) or backing files" },
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STEXI
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@item commit
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Commit changes to the disk images (if -snapshot is used) or backing files.
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ETEXI
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{ "info", "s?", do_info,
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"[subcommand]", "show various information about the system state" },
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STEXI
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@item info @var{subcommand}
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Show various information about the system state.
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@table @option
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@item info version
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show the version of QEMU
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@item info network
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show the various VLANs and the associated devices
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@item info chardev
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show the character devices
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@item info block
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show the block devices
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@item info block
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show block device statistics
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@item info registers
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show the cpu registers
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@item info cpus
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show infos for each CPU
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@item info history
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show the command line history
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@item info irq
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show the interrupts statistics (if available)
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@item info pic
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show i8259 (PIC) state
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@item info pci
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show emulated PCI device info
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@item info tlb
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show virtual to physical memory mappings (i386 only)
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@item info mem
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show the active virtual memory mappings (i386 only)
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@item info hpet
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show state of HPET (i386 only)
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@item info kvm
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show KVM information
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@item info usb
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show USB devices plugged on the virtual USB hub
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@item info usbhost
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show all USB host devices
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@item info profile
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show profiling information
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@item info capture
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show information about active capturing
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@item info snapshots
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show list of VM snapshots
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@item info status
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show the current VM status (running|paused)
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@item info pcmcia
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show guest PCMCIA status
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@item info mice
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show which guest mouse is receiving events
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@item info vnc
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show the vnc server status
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@item info name
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show the current VM name
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@item info uuid
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show the current VM UUID
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@item info cpustats
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show CPU statistics
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@item info usernet
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show user network stack connection states
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@item info migrate
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show migration status
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@item info balloon
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show balloon information
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@item info qtree
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show device tree
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@end table
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ETEXI
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{ "q|quit", "", do_quit,
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"", "quit the emulator" },
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STEXI
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@item q or quit
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Quit the emulator.
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ETEXI
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{ "eject", "-fB", do_eject,
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"[-f] device", "eject a removable medium (use -f to force it)" },
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STEXI
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@item eject [-f] @var{device}
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Eject a removable medium (use -f to force it).
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ETEXI
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{ "change", "BFs?", do_change,
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"device filename [format]", "change a removable medium, optional format" },
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STEXI
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@item change @var{device} @var{setting}
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Change the configuration of a device.
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@table @option
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@item change @var{diskdevice} @var{filename} [@var{format}]
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Change the medium for a removable disk device to point to @var{filename}. eg
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@example
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(qemu) change ide1-cd0 /path/to/some.iso
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@end example
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@var{format} is optional.
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@item change vnc @var{display},@var{options}
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Change the configuration of the VNC server. The valid syntax for @var{display}
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and @var{options} are described at @ref{sec_invocation}. eg
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@example
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(qemu) change vnc localhost:1
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@end example
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@item change vnc password [@var{password}]
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Change the password associated with the VNC server. If the new password is not
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supplied, the monitor will prompt for it to be entered. VNC passwords are only
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significant up to 8 letters. eg
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@example
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(qemu) change vnc password
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Password: ********
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@end example
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@end table
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ETEXI
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{ "screendump", "F", do_screen_dump,
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"filename", "save screen into PPM image 'filename'" },
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STEXI
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@item screendump @var{filename}
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Save screen into PPM image @var{filename}.
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ETEXI
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{ "logfile", "F", do_logfile,
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"filename", "output logs to 'filename'" },
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STEXI
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@item logfile @var{filename}
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Output logs to @var{filename}.
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ETEXI
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{ "log", "s", do_log,
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"item1[,...]", "activate logging of the specified items to '/tmp/qemu.log'" },
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STEXI
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@item log @var{item1}[,...]
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Activate logging of the specified items to @file{/tmp/qemu.log}.
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ETEXI
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{ "savevm", "s?", do_savevm,
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"[tag|id]", "save a VM snapshot. If no tag or id are provided, a new snapshot is created" },
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STEXI
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@item savevm [@var{tag}|@var{id}]
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Create a snapshot of the whole virtual machine. If @var{tag} is
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provided, it is used as human readable identifier. If there is already
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a snapshot with the same tag or ID, it is replaced. More info at
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@ref{vm_snapshots}.
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ETEXI
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{ "loadvm", "s", do_loadvm,
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"tag|id", "restore a VM snapshot from its tag or id" },
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STEXI
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@item loadvm @var{tag}|@var{id}
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Set the whole virtual machine to the snapshot identified by the tag
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@var{tag} or the unique snapshot ID @var{id}.
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ETEXI
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{ "delvm", "s", do_delvm,
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"tag|id", "delete a VM snapshot from its tag or id" },
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STEXI
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@item delvm @var{tag}|@var{id}
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Delete the snapshot identified by @var{tag} or @var{id}.
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ETEXI
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{ "singlestep", "s?", do_singlestep,
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"[on|off]", "run emulation in singlestep mode or switch to normal mode", },
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STEXI
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@item singlestep [off]
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Run the emulation in single step mode.
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If called with option off, the emulation returns to normal mode.
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ETEXI
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{ "stop", "", do_stop,
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"", "stop emulation", },
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STEXI
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@item stop
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Stop emulation.
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ETEXI
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{ "c|cont", "", do_cont,
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"", "resume emulation", },
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STEXI
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@item c or cont
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Resume emulation.
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ETEXI
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{ "gdbserver", "s?", do_gdbserver,
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"[device]", "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", },
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STEXI
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@item gdbserver [@var{port}]
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Start gdbserver session (default @var{port}=1234)
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ETEXI
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{ "x", "/l", do_memory_dump,
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"/fmt addr", "virtual memory dump starting at 'addr'", },
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STEXI
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@item x/fmt @var{addr}
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Virtual memory dump starting at @var{addr}.
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ETEXI
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{ "xp", "/l", do_physical_memory_dump,
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"/fmt addr", "physical memory dump starting at 'addr'", },
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STEXI
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@item xp /@var{fmt} @var{addr}
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Physical memory dump starting at @var{addr}.
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@var{fmt} is a format which tells the command how to format the
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data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
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@table @var
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@item count
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is the number of items to be dumped.
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@item format
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can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
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c (char) or i (asm instruction).
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@item size
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can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
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@code{h} or @code{w} can be specified with the @code{i} format to
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respectively select 16 or 32 bit code instruction size.
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@end table
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Examples:
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@itemize
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@item
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Dump 10 instructions at the current instruction pointer:
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@example
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(qemu) x/10i $eip
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0x90107063: ret
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0x90107064: sti
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0x90107065: lea 0x0(%esi,1),%esi
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0x90107069: lea 0x0(%edi,1),%edi
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0x90107070: ret
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0x90107071: jmp 0x90107080
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0x90107073: nop
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0x90107074: nop
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0x90107075: nop
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0x90107076: nop
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@end example
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@item
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Dump 80 16 bit values at the start of the video memory.
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@smallexample
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(qemu) xp/80hx 0xb8000
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0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
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0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
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0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
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0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
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0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
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0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
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0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
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0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
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0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
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0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
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@end smallexample
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@end itemize
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ETEXI
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{ "p|print", "/l", do_print,
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"/fmt expr", "print expression value (use $reg for CPU register access)", },
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STEXI
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@item p or print/@var{fmt} @var{expr}
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Print expression value. Only the @var{format} part of @var{fmt} is
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used.
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ETEXI
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{ "i", "/ii.", do_ioport_read,
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"/fmt addr", "I/O port read" },
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STEXI
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Read I/O port.
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ETEXI
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{ "o", "/ii", do_ioport_write,
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"/fmt addr value", "I/O port write" },
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STEXI
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Write to I/O port.
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ETEXI
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{ "sendkey", "si?", do_sendkey,
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"keys [hold_ms]", "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)" },
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STEXI
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@item sendkey @var{keys}
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Send @var{keys} to the emulator. @var{keys} could be the name of the
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key or @code{#} followed by the raw value in either decimal or hexadecimal
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format. Use @code{-} to press several keys simultaneously. Example:
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@example
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sendkey ctrl-alt-f1
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@end example
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This command is useful to send keys that your graphical user interface
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intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
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ETEXI
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{ "system_reset", "", do_system_reset,
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"", "reset the system" },
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STEXI
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@item system_reset
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Reset the system.
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ETEXI
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{ "system_powerdown", "", do_system_powerdown,
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"", "send system power down event" },
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STEXI
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@item system_powerdown
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Power down the system (if supported).
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ETEXI
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{ "sum", "ii", do_sum,
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"addr size", "compute the checksum of a memory region" },
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STEXI
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@item sum @var{addr} @var{size}
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Compute the checksum of a memory region.
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ETEXI
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{ "usb_add", "s", do_usb_add,
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"device", "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')" },
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STEXI
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@item usb_add @var{devname}
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Add the USB device @var{devname}. For details of available devices see
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@ref{usb_devices}
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ETEXI
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{ "usb_del", "s", do_usb_del,
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"device", "remove USB device 'bus.addr'" },
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STEXI
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@item usb_del @var{devname}
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Remove the USB device @var{devname} from the QEMU virtual USB
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hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
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command @code{info usb} to see the devices you can remove.
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ETEXI
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{ "cpu", "i", do_cpu_set,
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"index", "set the default CPU" },
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STEXI
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Set the default CPU.
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ETEXI
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{ "mouse_move", "sss?", do_mouse_move,
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"dx dy [dz]", "send mouse move events" },
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STEXI
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@item mouse_move @var{dx} @var{dy} [@var{dz}]
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Move the active mouse to the specified coordinates @var{dx} @var{dy}
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with optional scroll axis @var{dz}.
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ETEXI
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{ "mouse_button", "i", do_mouse_button,
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"state", "change mouse button state (1=L, 2=M, 4=R)" },
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STEXI
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@item mouse_button @var{val}
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Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
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ETEXI
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{ "mouse_set", "i", do_mouse_set,
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"index", "set which mouse device receives events" },
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STEXI
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@item mouse_set @var{index}
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Set which mouse device receives events at given @var{index}, index
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can be obtained with
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@example
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info mice
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@end example
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ETEXI
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#ifdef HAS_AUDIO
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{ "wavcapture", "si?i?i?", do_wav_capture,
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"path [frequency [bits [channels]]]",
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"capture audio to a wave file (default frequency=44100 bits=16 channels=2)" },
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#endif
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STEXI
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@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
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Capture audio into @var{filename}. Using sample rate @var{frequency}
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bits per sample @var{bits} and number of channels @var{channels}.
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Defaults:
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@itemize @minus
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@item Sample rate = 44100 Hz - CD quality
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@item Bits = 16
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@item Number of channels = 2 - Stereo
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@end itemize
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ETEXI
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#ifdef HAS_AUDIO
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{ "stopcapture", "i", do_stop_capture,
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"capture index", "stop capture" },
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#endif
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STEXI
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@item stopcapture @var{index}
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Stop capture with a given @var{index}, index can be obtained with
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@example
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info capture
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@end example
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ETEXI
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{ "memsave", "lis", do_memory_save,
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"addr size file", "save to disk virtual memory dump starting at 'addr' of size 'size'", },
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STEXI
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@item memsave @var{addr} @var{size} @var{file}
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save to disk virtual memory dump starting at @var{addr} of size @var{size}.
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ETEXI
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{ "pmemsave", "lis", do_physical_memory_save,
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"addr size file", "save to disk physical memory dump starting at 'addr' of size 'size'", },
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STEXI
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@item pmemsave @var{addr} @var{size} @var{file}
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save to disk physical memory dump starting at @var{addr} of size @var{size}.
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ETEXI
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{ "boot_set", "s", do_boot_set,
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"bootdevice", "define new values for the boot device list" },
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STEXI
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@item boot_set @var{bootdevicelist}
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Define new values for the boot device list. Those values will override
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the values specified on the command line through the @code{-boot} option.
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The values that can be specified here depend on the machine type, but are
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the same that can be specified in the @code{-boot} command line option.
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ETEXI
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#if defined(TARGET_I386)
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{ "nmi", "i", do_inject_nmi,
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"cpu", "inject an NMI on the given CPU", },
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#endif
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STEXI
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@item nmi @var{cpu}
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Inject an NMI on the given CPU (x86 only).
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ETEXI
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{ "migrate", "-ds", do_migrate,
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"[-d] uri", "migrate to URI (using -d to not wait for completion)" },
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STEXI
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@item migrate [-d] @var{uri}
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Migrate to @var{uri} (using -d to not wait for completion).
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ETEXI
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{ "migrate_cancel", "", do_migrate_cancel,
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"", "cancel the current VM migration" },
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STEXI
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@item migrate_cancel
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Cancel the current VM migration.
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ETEXI
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{ "migrate_set_speed", "s", do_migrate_set_speed,
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"value", "set maximum speed (in bytes) for migrations" },
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STEXI
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@item migrate_set_speed @var{value}
|
|
Set maximum speed to @var{value} (in bytes) for migrations.
|
|
ETEXI
|
|
|
|
{ "migrate_set_downtime", "s", do_migrate_set_downtime,
|
|
"value", "set maximum tolerated downtime (in seconds) for migrations" },
|
|
|
|
STEXI
|
|
@item migrate_set_downtime @var{second}
|
|
Set maximum tolerated downtime (in seconds) for migration.
|
|
ETEXI
|
|
|
|
#if defined(TARGET_I386)
|
|
{ "drive_add", "ss", drive_hot_add, "[[<domain>:]<bus>:]<slot>\n"
|
|
"[file=file][,if=type][,bus=n]\n"
|
|
"[,unit=m][,media=d][index=i]\n"
|
|
"[,cyls=c,heads=h,secs=s[,trans=t]]\n"
|
|
"[snapshot=on|off][,cache=on|off]",
|
|
"add drive to PCI storage controller" },
|
|
#endif
|
|
STEXI
|
|
@item drive_add
|
|
Add drive to PCI storage controller.
|
|
ETEXI
|
|
|
|
#if defined(TARGET_I386)
|
|
{ "pci_add", "sss?", pci_device_hot_add, "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...", "hot-add PCI device" },
|
|
#endif
|
|
STEXI
|
|
@item pci_add
|
|
Hot-add PCI device.
|
|
ETEXI
|
|
|
|
#if defined(TARGET_I386)
|
|
{ "pci_del", "s", pci_device_hot_remove, "[[<domain>:]<bus>:]<slot>", "hot remove PCI device" },
|
|
#endif
|
|
STEXI
|
|
@item pci_del
|
|
Hot remove PCI device.
|
|
ETEXI
|
|
|
|
{ "host_net_add", "ss?", net_host_device_add,
|
|
"tap|user|socket|vde|dump [options]", "add host VLAN client" },
|
|
STEXI
|
|
@item host_net_add
|
|
Add host VLAN client.
|
|
ETEXI
|
|
|
|
{ "host_net_remove", "is", net_host_device_remove,
|
|
"vlan_id name", "remove host VLAN client" },
|
|
STEXI
|
|
@item host_net_remove
|
|
Remove host VLAN client.
|
|
ETEXI
|
|
|
|
#ifdef CONFIG_SLIRP
|
|
{ "hostfwd_add", "ss?s?", net_slirp_hostfwd_add,
|
|
"[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
|
|
"redirect TCP or UDP connections from host to guest (requires -net user)" },
|
|
{ "hostfwd_remove", "ss?s?", net_slirp_hostfwd_remove,
|
|
"[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
|
|
"remove host-to-guest TCP or UDP redirection" },
|
|
#endif
|
|
STEXI
|
|
@item host_net_redir
|
|
Redirect TCP or UDP connections from host to guest (requires -net user).
|
|
ETEXI
|
|
|
|
{ "balloon", "i", do_balloon,
|
|
"target", "request VM to change it's memory allocation (in MB)" },
|
|
STEXI
|
|
@item balloon @var{value}
|
|
Request VM to change its memory allocation to @var{value} (in MB).
|
|
ETEXI
|
|
|
|
{ "set_link", "ss", do_set_link,
|
|
"name up|down", "change the link status of a network adapter" },
|
|
STEXI
|
|
@item set_link @var{name} [up|down]
|
|
Set link @var{name} up or down.
|
|
ETEXI
|
|
|
|
{ "watchdog_action", "s", do_watchdog_action,
|
|
"[reset|shutdown|poweroff|pause|debug|none]", "change watchdog action" },
|
|
STEXI
|
|
@item watchdog_action
|
|
Change watchdog action.
|
|
ETEXI
|
|
|
|
{ "acl_show", "s", do_acl_show, "aclname",
|
|
"list rules in the access control list" },
|
|
STEXI
|
|
@item acl_show @var{aclname}
|
|
List all the matching rules in the access control list, and the default
|
|
policy. There are currently two named access control lists,
|
|
@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
|
|
certificate distinguished name, and SASL username respectively.
|
|
ETEXI
|
|
|
|
{ "acl_policy", "ss", do_acl_policy, "aclname allow|deny",
|
|
"set default access control list policy" },
|
|
STEXI
|
|
@item acl_policy @var{aclname} @code{allow|deny}
|
|
Set the default access control list policy, used in the event that
|
|
none of the explicit rules match. The default policy at startup is
|
|
always @code{deny}.
|
|
ETEXI
|
|
|
|
{ "acl_add", "sssi?", do_acl_add, "aclname match allow|deny [index]",
|
|
"add a match rule to the access control list" },
|
|
STEXI
|
|
@item acl_allow @var{aclname} @var{match} @code{allow|deny} [@var{index}]
|
|
Add a match rule to the access control list, allowing or denying access.
|
|
The match will normally be an exact username or x509 distinguished name,
|
|
but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
|
|
allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
|
|
normally be appended to the end of the ACL, but can be inserted
|
|
earlier in the list if the optional @var{index} parameter is supplied.
|
|
ETEXI
|
|
|
|
{ "acl_remove", "ss", do_acl_remove, "aclname match",
|
|
"remove a match rule from the access control list" },
|
|
STEXI
|
|
@item acl_remove @var{aclname} @var{match}
|
|
Remove the specified match rule from the access control list.
|
|
ETEXI
|
|
|
|
{ "acl_reset", "s", do_acl_reset, "aclname",
|
|
"reset the access control list" },
|
|
STEXI
|
|
@item acl_remove @var{aclname} @var{match}
|
|
Remove all matches from the access control list, and set the default
|
|
policy back to @code{deny}.
|
|
ETEXI
|
|
|
|
#if defined(TARGET_I386)
|
|
{ "mce", "iillll", do_inject_mce, "cpu bank status mcgstatus addr misc", "inject a MCE on the given CPU"},
|
|
#endif
|
|
STEXI
|
|
@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
|
|
Inject an MCE on the given CPU (x86 only).
|
|
ETEXI
|
|
|
|
{ "getfd", "s", do_getfd, "getfd name",
|
|
"receive a file descriptor via SCM rights and assign it a name" },
|
|
STEXI
|
|
@item getfd @var{fdname}
|
|
If a file descriptor is passed alongside this command using the SCM_RIGHTS
|
|
mechanism on unix sockets, it is stored using the name @var{fdname} for
|
|
later use by other monitor commands.
|
|
ETEXI
|
|
|
|
{ "closefd", "s", do_closefd, "closefd name",
|
|
"close a file descriptor previously passed via SCM rights" },
|
|
STEXI
|
|
@item closefd @var{fdname}
|
|
Close the file descriptor previously assigned to @var{fdname} using the
|
|
@code{getfd} command. This is only needed if the file descriptor was never
|
|
used by another monitor command.
|
|
ETEXI
|
|
|
|
STEXI
|
|
@end table
|
|
ETEXI
|