ETEXI
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
- "-smp n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]\n"
+ "-smp [cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]\n"
" set the number of CPUs to 'n' [default=1]\n"
" maxcpus= maximum number of total cpus, including\n"
" offline CPUs for hotplug, etc\n"
" sockets= number of discrete sockets in the system\n",
QEMU_ARCH_ALL)
STEXI
-@item -smp @var{n}[,cores=@var{cores}][,threads=@var{threads}][,sockets=@var{sockets}][,maxcpus=@var{maxcpus}]
+@item -smp [cpus=]@var{n}[,cores=@var{cores}][,threads=@var{threads}][,sockets=@var{sockets}][,maxcpus=@var{maxcpus}]
@findex -smp
Simulate an SMP system with @var{n} CPUs. On the PC target, up to 255
CPUs are supported. On Sparc32 target, Linux limits the number of usable CPUs
DEF("boot", HAS_ARG, QEMU_OPTION_boot,
"-boot [order=drives][,once=drives][,menu=on|off]\n"
- " [,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time]\n"
+ " [,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time][,strict=on|off]\n"
" 'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)\n"
" 'sp_name': the file's name that would be passed to bios as logo picture, if menu=on\n"
" 'sp_time': the period that splash picture last if menu=on, unit is ms\n"
" 'rb_timeout': the timeout before guest reboot when boot failed, unit is ms\n",
QEMU_ARCH_ALL)
STEXI
-@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}][,reboot-timeout=@var{rb_timeout}]
+@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}][,reboot-timeout=@var{rb_timeout}][,strict=on|off]
@findex -boot
Specify boot order @var{drives} as a string of drive letters. Valid
drive letters depend on the target achitecture. The x86 PC uses: a, b
reboot, qemu passes '-1' to bios by default. Currently Seabios for X86
system support it.
+Do strict boot via @option{strict=on} as far as firmware/BIOS
+supports it. This only effects when boot priority is changed by
+bootindex options. The default is non-strict boot.
+
@example
# try to boot from network first, then from hard disk
qemu-system-i386 -boot order=nc
" [,cache=writethrough|writeback|none|directsync|unsafe][,format=f]\n"
" [,serial=s][,addr=A][,id=name][,aio=threads|native]\n"
" [,readonly=on|off][,copy-on-read=on|off]\n"
- " [[,bps=b]|[[,bps_rd=r][,bps_wr=w]]][[,iops=i]|[[,iops_rd=r][,iops_wr=w]]\n"
+ " [[,bps=b]|[[,bps_rd=r][,bps_wr=w]]]\n"
+ " [[,iops=i]|[[,iops_rd=r][,iops_wr=w]]]\n"
+ " [[,bps_max=bm]|[[,bps_rd_max=rm][,bps_wr_max=wm]]]\n"
+ " [[,iops_max=im]|[[,iops_rd_max=irm][,iops_wr_max=iwm]]]\n"
+ " [[,iops_size=is]]\n"
" use 'file' as a drive image\n", QEMU_ARCH_ALL)
STEXI
@item -drive @var{option}[,@var{option}[,@var{option}[,...]]]
@var{cache} is "none", "writeback", "unsafe", "directsync" or "writethrough" and controls how the host cache is used to access block data.
@item aio=@var{aio}
@var{aio} is "threads", or "native" and selects between pthread based disk I/O and native Linux AIO.
+@item discard=@var{discard}
+@var{discard} is one of "ignore" (or "off") or "unmap" (or "on") and controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap}) requests are ignored or passed to the filesystem. Some machine types may not support discard requests.
@item format=@var{format}
Specify which disk @var{format} will be used rather than detecting
the format. Can be used to specifiy format=raw to avoid interpreting
Normally, QEMU uses SDL to display the VGA output. With this option,
you can totally disable graphical output so that QEMU is a simple
command line application. The emulated serial port is redirected on
-the console. Therefore, you can still use QEMU to debug a Linux kernel
-with a serial console.
+the console and muxed with the monitor (unless redirected elsewhere
+explicitly). Therefore, you can still use QEMU to debug a Linux kernel
+with a serial console. Use @key{C-a h} for help on switching between
+the console and monitor.
ETEXI
DEF("curses", 0, QEMU_OPTION_curses,
" [,jpeg-wan-compression=[auto|never|always]]\n"
" [,zlib-glz-wan-compression=[auto|never|always]]\n"
" [,streaming-video=[off|all|filter]][,disable-copy-paste]\n"
- " [,agent-mouse=[on|off]][,playback-compression=[on|off]]\n"
- " [,seamless-migration=[on|off]]\n"
+ " [,disable-agent-file-xfer][,agent-mouse=[on|off]]\n"
+ " [,playback-compression=[on|off]][,seamless-migration=[on|off]]\n"
" enable spice\n"
" at least one of {port, tls-port} is mandatory\n",
QEMU_ARCH_ALL)
@item disable-copy-paste
Disable copy paste between the client and the guest.
+@item disable-agent-file-xfer
+Disable spice-vdagent based file-xfer between the client and the guest.
+
@item tls-port=<nr>
Set the TCP port spice is listening on for encrypted channels.
@item websocket
Opens an additional TCP listening port dedicated to VNC Websocket connections.
-By defintion the Websocket port is 5700+@var{display}. If @var{host} is
+By definition the Websocket port is 5700+@var{display}. If @var{host} is
specified connections will only be allowed from this host.
As an alternative the Websocket port could be specified by using
@code{websocket}=@var{port}.
+TLS encryption for the Websocket connection is supported if the required
+certificates are specified with the VNC option @option{x509}.
@item password
STEXI
@item -no-fd-bootchk
@findex -no-fd-bootchk
-Disable boot signature checking for floppy disks in Bochs BIOS. It may
+Disable boot signature checking for floppy disks in BIOS. May
be needed to boot from old floppy disks.
-TODO: check reference to Bochs BIOS.
ETEXI
DEF("no-acpi", 0, QEMU_OPTION_no_acpi,
"-net tap[,vlan=n][,name=str],ifname=name\n"
" connect the host TAP network interface to VLAN 'n'\n"
#else
- "-net tap[,vlan=n][,name=str][,fd=h][,fds=x:y:...:z][,ifname=name][,script=file][,downscript=dfile][,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off][,vhostfd=h][,vhostfds=x:y:...:z][,vhostforce=on|off]\n"
+ "-net tap[,vlan=n][,name=str][,fd=h][,fds=x:y:...:z][,ifname=name][,script=file][,downscript=dfile][,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off][,vhostfd=h][,vhostfds=x:y:...:z][,vhostforce=on|off][,queues=n]\n"
" connect the host TAP network interface to VLAN 'n'\n"
" use network scripts 'file' (default=" DEFAULT_NETWORK_SCRIPT ")\n"
" to configure it and 'dfile' (default=" DEFAULT_NETWORK_DOWN_SCRIPT ")\n"
" use vhostforce=on to force vhost on for non-MSIX virtio guests\n"
" use 'vhostfd=h' to connect to an already opened vhost net device\n"
" use 'vhostfds=x:y:...:z to connect to multiple already opened vhost net devices\n"
+ " use 'queues=n' to specify the number of queues to be created for multiqueue TAP\n"
"-net bridge[,vlan=n][,name=str][,br=bridge][,helper=helper]\n"
" connects a host TAP network interface to a host bridge device 'br'\n"
" (default=" DEFAULT_BRIDGE_INTERFACE ") using the program 'helper'\n"
#ifdef CONFIG_VDE
"vde|"
#endif
- "socket],id=str[,option][,option][,...]\n", QEMU_ARCH_ALL)
+ "socket|"
+ "hubport],id=str[,option][,option][,...]\n", QEMU_ARCH_ALL)
STEXI
@item -net nic[,vlan=@var{n}][,macaddr=@var{mac}][,model=@var{type}] [,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}]
@findex -net
qemu-system-i386 linux.img -net nic -net vde,sock=/tmp/myswitch
@end example
+@item -netdev hubport,id=@var{id},hubid=@var{hubid}
+
+Create a hub port on QEMU "vlan" @var{hubid}.
+
+The hubport netdev lets you connect a NIC to a QEMU "vlan" instead of a single
+netdev. @code{-net} and @code{-device} with parameter @option{vlan} create the
+required hub automatically.
+
@item -net dump[,vlan=@var{n}][,file=@var{file}][,len=@var{len}]
Dump network traffic on VLAN @var{n} to file @var{file} (@file{qemu-vlan0.pcap} by default).
At most @var{len} bytes (64k by default) per packet are stored. The file format is
qemu-system-i386 --drive file=nbd:unix:/tmp/nbd-socket
@end example
+@item SSH
+QEMU supports SSH (Secure Shell) access to remote disks.
+
+Examples:
+@example
+qemu-system-i386 -drive file=ssh://user@@host/path/to/disk.img
+qemu-system-i386 -drive file.driver=ssh,file.user=user,file.host=host,file.port=22,file.path=/path/to/disk.img
+@end example
+
+Currently authentication must be done using ssh-agent. Other
+authentication methods may be supported in future.
+
@item Sheepdog
Sheepdog is a distributed storage system for QEMU.
QEMU supports using either local sheepdog devices or remote networked
devices.
Syntax for specifying a sheepdog device
-@table @list
-``sheepdog:<vdiname>''
-
-``sheepdog:<vdiname>:<snapid>''
-
-``sheepdog:<vdiname>:<tag>''
-
-``sheepdog:<host>:<port>:<vdiname>''
-
-``sheepdog:<host>:<port>:<vdiname>:<snapid>''
-
-``sheepdog:<host>:<port>:<vdiname>:<tag>''
-@end table
+@example
+sheepdog[+tcp|+unix]://[host:port]/vdiname[?socket=path][#snapid|#tag]
+@end example
Example
@example
-qemu-system-i386 --drive file=sheepdog:192.0.2.1:30000:MyVirtualMachine
+qemu-system-i386 --drive file=sheepdog://192.0.2.1:30000/MyVirtualMachine
@end example
See also @url{http://http://www.osrg.net/sheepdog/}.
Example
@example
-qemu-system-x86_84 --drive file=gluster://192.0.2.1/testvol/a.img
+qemu-system-x86_64 --drive file=gluster://192.0.2.1/testvol/a.img
@end example
See also @url{http://www.gluster.org}.
ETEXI
DEFHEADING()
+#ifdef CONFIG_TPM
+DEFHEADING(TPM device options:)
+
+DEF("tpmdev", HAS_ARG, QEMU_OPTION_tpmdev, \
+ "-tpmdev passthrough,id=id[,path=path][,cancel-path=path]\n"
+ " use path to provide path to a character device; default is /dev/tpm0\n"
+ " use cancel-path to provide path to TPM's cancel sysfs entry; if\n"
+ " not provided it will be searched for in /sys/class/misc/tpm?/device\n",
+ QEMU_ARCH_ALL)
+STEXI
+
+The general form of a TPM device option is:
+@table @option
+
+@item -tpmdev @var{backend} ,id=@var{id} [,@var{options}]
+@findex -tpmdev
+Backend type must be:
+@option{passthrough}.
+
+The specific backend type will determine the applicable options.
+The @code{-tpmdev} option creates the TPM backend and requires a
+@code{-device} option that specifies the TPM frontend interface model.
+
+Options to each backend are described below.
+
+Use 'help' to print all available TPM backend types.
+@example
+qemu -tpmdev help
+@end example
+
+@item -tpmdev passthrough, id=@var{id}, path=@var{path}, cancel-path=@var{cancel-path}
+
+(Linux-host only) Enable access to the host's TPM using the passthrough
+driver.
+
+@option{path} specifies the path to the host's TPM device, i.e., on
+a Linux host this would be @code{/dev/tpm0}.
+@option{path} is optional and by default @code{/dev/tpm0} is used.
+
+@option{cancel-path} specifies the path to the host TPM device's sysfs
+entry allowing for cancellation of an ongoing TPM command.
+@option{cancel-path} is optional and by default QEMU will search for the
+sysfs entry to use.
+
+Some notes about using the host's TPM with the passthrough driver:
+
+The TPM device accessed by the passthrough driver must not be
+used by any other application on the host.
+
+Since the host's firmware (BIOS/UEFI) has already initialized the TPM,
+the VM's firmware (BIOS/UEFI) will not be able to initialize the
+TPM again and may therefore not show a TPM-specific menu that would
+otherwise allow the user to configure the TPM, e.g., allow the user to
+enable/disable or activate/deactivate the TPM.
+Further, if TPM ownership is released from within a VM then the host's TPM
+will get disabled and deactivated. To enable and activate the
+TPM again afterwards, the host has to be rebooted and the user is
+required to enter the firmware's menu to enable and activate the TPM.
+If the TPM is left disabled and/or deactivated most TPM commands will fail.
+
+To create a passthrough TPM use the following two options:
+@example
+-tpmdev passthrough,id=tpm0 -device tpm-tis,tpmdev=tpm0
+@end example
+Note that the @code{-tpmdev} id is @code{tpm0} and is referenced by
+@code{tpmdev=tpm0} in the device option.
+
+@end table
+
+ETEXI
+
+DEFHEADING()
+
+#endif
+
DEFHEADING(Linux/Multiboot boot specific:)
STEXI
@item mon:@var{dev_string}
This is a special option to allow the monitor to be multiplexed onto
another serial port. The monitor is accessed with key sequence of
-@key{Control-a} and then pressing @key{c}. See monitor access
-@ref{pcsys_keys} in the -nographic section for more keys.
+@key{Control-a} and then pressing @key{c}.
@var{dev_string} should be any one of the serial devices specified
above. An example to multiplex the monitor onto a telnet server
listening on port 4444 would be:
@table @code
@item -serial mon:telnet::4444,server,nowait
@end table
+When the monitor is multiplexed to stdio in this way, Ctrl+C will not terminate
+QEMU any more but will be passed to the guest instead.
@item braille
Braille device. This will use BrlAPI to display the braille output on a real
serial port).
The default device is @code{vc} in graphical mode and @code{stdio} in
non graphical mode.
+Use @code{-monitor none} to disable the default monitor.
ETEXI
DEF("qmp", HAS_ARG, QEMU_OPTION_qmp, \
"-qmp dev like -monitor but opens in 'control' mode\n",
ETEXI
DEF("mon", HAS_ARG, QEMU_OPTION_mon, \
- "-mon chardev=[name][,mode=readline|control][,default]\n", QEMU_ARCH_ALL)
+ "-mon [chardev=]name[,mode=readline|control][,default]\n", QEMU_ARCH_ALL)
STEXI
-@item -mon chardev=[name][,mode=readline|control][,default]
+@item -mon [chardev=]name[,mode=readline|control][,default]
@findex -mon
Setup monitor on chardev @var{name}.
ETEXI
Do not start CPU at startup (you must type 'c' in the monitor).
ETEXI
+DEF("realtime", HAS_ARG, QEMU_OPTION_realtime,
+ "-realtime [mlock=on|off]\n"
+ " run qemu with realtime features\n"
+ " mlock=on|off controls mlock support (default: on)\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item -realtime mlock=on|off
+@findex -realtime
+Run qemu with realtime features.
+mlocking qemu and guest memory can be enabled via @option{mlock=on}
+(enabled by default).
+ETEXI
+
DEF("gdb", HAS_ARG, QEMU_OPTION_gdb, \
"-gdb dev wait for gdb connection on 'dev'\n", QEMU_ARCH_ALL)
STEXI
ETEXI
DEF("d", HAS_ARG, QEMU_OPTION_d, \
- "-d item1,... output log to /tmp/qemu.log (use '-d help' for a list of log items)\n",
+ "-d item1,... enable logging of specified items (use '-d help' for a list of log items)\n",
QEMU_ARCH_ALL)
STEXI
-@item -d
+@item -d @var{item1}[,...]
@findex -d
-Output log in /tmp/qemu.log
+Enable logging of specified items. Use '-d help' for a list of log items.
ETEXI
DEF("D", HAS_ARG, QEMU_OPTION_D, \
- "-D logfile output log to logfile (instead of the default /tmp/qemu.log)\n",
+ "-D logfile output log to logfile (default stderr)\n",
QEMU_ARCH_ALL)
STEXI
@item -D @var{logfile}
@findex -D
-Output log in @var{logfile} instead of /tmp/qemu.log
+Output log in @var{logfile} instead of to stderr
ETEXI
DEF("L", HAS_ARG, QEMU_OPTION_L, \
'/objects' path.
ETEXI
+DEF("msg", HAS_ARG, QEMU_OPTION_msg,
+ "-msg timestamp[=on|off]\n"
+ " change the format of messages\n"
+ " on|off controls leading timestamps (default:on)\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item -msg timestamp[=on|off]
+@findex -msg
+prepend a timestamp to each log message.(default:on)
+ETEXI
+
HXCOMM This is the last statement. Insert new options before this line!
STEXI
@end table
projects / qemu.git / blobdiff