DEF("accel", HAS_ARG, QEMU_OPTION_accel,
"-accel [accel=]accelerator[,thread=single|multi]\n"
" select accelerator (kvm, xen, hax, hvf, whpx or tcg; use 'help' for a list)\n"
- " thread=single|multi (enable multi-threaded TCG)", QEMU_ARCH_ALL)
+ " thread=single|multi (enable multi-threaded TCG)\n", QEMU_ARCH_ALL)
STEXI
@item -accel @var{name}[,prop=@var{value}[,...]]
@findex -accel
@item -balloon virtio[,addr=@var{addr}]
@findex -balloon
Enable virtio balloon device, optionally with PCI address @var{addr}. This
-option is deprecated, use @option{--device virtio-balloon} instead.
+option is deprecated, use @option{-device virtio-balloon} instead.
ETEXI
DEF("device", HAS_ARG, QEMU_OPTION_device,
"-netdev user,id=str[,ipv4[=on|off]][,net=addr[/mask]][,host=addr]\n"
" [,ipv6[=on|off]][,ipv6-net=addr[/int]][,ipv6-host=addr]\n"
" [,restrict=on|off][,hostname=host][,dhcpstart=addr]\n"
- " [,dns=addr][,ipv6-dns=addr][,dnssearch=domain][,tftp=dir]\n"
- " [,bootfile=f][,hostfwd=rule][,guestfwd=rule]"
+ " [,dns=addr][,ipv6-dns=addr][,dnssearch=domain][,domainname=domain]\n"
+ " [,tftp=dir][,bootfile=f][,hostfwd=rule][,guestfwd=rule]"
#ifndef _WIN32
"[,smb=dir[,smbserver=addr]]\n"
#endif
" configure a vhost-user network, backed by a chardev 'dev'\n"
#endif
"-netdev hubport,id=str,hubid=n[,netdev=nd]\n"
- " configure a hub port on QEMU VLAN 'n'\n", QEMU_ARCH_ALL)
+ " configure a hub port on the hub with ID 'n'\n", QEMU_ARCH_ALL)
DEF("nic", HAS_ARG, QEMU_OPTION_nic,
- "--nic [tap|bridge|"
+ "-nic [tap|bridge|"
#ifdef CONFIG_SLIRP
"user|"
#endif
"socket][,option][,...][mac=macaddr]\n"
" initialize an on-board / default host NIC (using MAC address\n"
" macaddr) and connect it to the given host network backend\n"
- "--nic none use it alone to have zero network devices (the default is to\n"
+ "-nic none use it alone to have zero network devices (the default is to\n"
" provided a 'user' network connection)\n",
QEMU_ARCH_ALL)
DEF("net", HAS_ARG, QEMU_OPTION_net,
- "-net nic[,vlan=n][,netdev=nd][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]\n"
+ "-net nic[,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]\n"
" configure or create an on-board (or machine default) NIC and\n"
- " connect it either to VLAN 'n' or the netdev 'nd' (for pluggable\n"
- " NICs please use '-device devtype,netdev=nd' instead)\n"
+ " connect it to hub 0 (please use -nic unless you need a hub)\n"
"-net ["
#ifdef CONFIG_SLIRP
"user|"
#ifdef CONFIG_NETMAP
"netmap|"
#endif
- "socket][,vlan=n][,option][,option][,...]\n"
+ "socket][,option][,option][,...]\n"
" old way to initialize a host network interface\n"
" (use the -netdev option if possible instead)\n", QEMU_ARCH_ALL)
STEXI
qemu-system-i386 -nic user,dnssearch=mgmt.example.org,dnssearch=example.org
@end example
+@item domainname=@var{domain}
+Specifies the client domain name reported by the built-in DHCP server.
+
@item tftp=@var{dir}
When using the user mode network stack, activate a built-in TFTP
server. The files in @var{dir} will be exposed as the root of a TFTP server.
Create a hub port on the emulated hub with ID @var{hubid}.
The hubport netdev lets you connect a NIC to a QEMU emulated hub instead of a
-single netdev. @code{-net} and @code{-device} with the parameter @option{vlan}
-(deprecated), or @code{-nic hubport} can also be used to connect a
-network device or a NIC to a hub. Alternatively, you can also connect the
-hubport to another netdev with ID @var{nd} by using the @option{netdev=@var{nd}}
-option.
+single netdev. Alternatively, you can also connect the hubport to another
+netdev with ID @var{nd} by using the @option{netdev=@var{nd}} option.
-@item -net nic[,vlan=@var{n}][,netdev=@var{nd}][,macaddr=@var{mac}][,model=@var{type}] [,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}]
+@item -net nic[,netdev=@var{nd}][,macaddr=@var{mac}][,model=@var{type}] [,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}]
@findex -net
Legacy option to configure or create an on-board (or machine default) Network
-Interface Card(NIC) and connect it either to the emulated hub port ("vlan")
-with number @var{n} (@var{n} = 0 is the default), or to the netdev @var{nd}.
+Interface Card(NIC) and connect it either to the emulated hub with ID 0 (i.e.
+the default hub), or to the netdev @var{nd}.
The NIC is an e1000 by default on the PC target. Optionally, the MAC address
can be changed to @var{mac}, the device address set to @var{addr} (PCI cards
only), and a @var{name} can be assigned for use in monitor commands.
NIC is created. QEMU can emulate several different models of network card.
Use @code{-net nic,model=help} for a list of available devices for your target.
-@item -net user|tap|bridge|socket|l2tpv3|vde[,...][,vlan=@var{n}][,name=@var{name}]
+@item -net user|tap|bridge|socket|l2tpv3|vde[,...][,name=@var{name}]
Configure a host network backend (with the options corresponding to the same
-@option{-netdev} option) and connect it to the emulated hub ("vlan") with the
-number @var{n} (default is number 0). Use @var{name} to specify the name of the
-hub port.
+@option{-netdev} option) and connect it to the emulated hub 0 (the default
+hub). Use @var{name} to specify the name of the hub port.
ETEXI
STEXI
Run the emulation in single step mode.
ETEXI
+DEF("preconfig", 0, QEMU_OPTION_preconfig, \
+ "--preconfig pause QEMU before machine is initialized (experimental)\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item --preconfig
+@findex --preconfig
+Pause QEMU for interactive configuration before the machine is created,
+which allows querying and configuring properties that will affect
+machine initialization. Use QMP command 'x-exit-preconfig' to exit
+the preconfig state and move to the next state (i.e. run guest if -S
+isn't used or pause the second time if -S is used). This option is
+experimental.
+ETEXI
+
DEF("S", 0, QEMU_OPTION_S, \
"-S freeze CPU at startup (use 'c' to start execution)\n",
QEMU_ARCH_ALL)
(enabled by default).
ETEXI
+DEF("overcommit", HAS_ARG, QEMU_OPTION_overcommit,
+ "-overcommit [mem-lock=on|off][cpu-pm=on|off]\n"
+ " run qemu with overcommit hints\n"
+ " mem-lock=on|off controls memory lock support (default: off)\n"
+ " cpu-pm=on|off controls cpu power management (default: off)\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item -overcommit mem-lock=on|off
+@item -overcommit cpu-pm=on|off
+@findex -overcommit
+Run qemu with hints about host resource overcommit. The default is
+to assume that host overcommits all resources.
+
+Locking qemu and guest memory can be enabled via @option{mem-lock=on} (disabled
+by default). This works when host memory is not overcommitted and reduces the
+worst-case latency for guest. This is equivalent to @option{realtime}.
+
+Guest ability to manage power state of host cpus (increasing latency for other
+processes on the same host cpu, but decreasing latency for guest) can be
+enabled via @option{cpu-pm=on} (disabled by default). This works best when
+host CPU is not overcommitted. When used, host estimates of CPU cycle and power
+utilization will be incorrect, not taking into account guest idle time.
+ETEXI
+
DEF("gdb", HAS_ARG, QEMU_OPTION_gdb, \
"-gdb dev wait for gdb connection on 'dev'\n", QEMU_ARCH_ALL)
STEXI
Enable HAX (Hardware-based Acceleration eXecution) support. This option
is only available if HAX support is enabled when compiling. HAX is only
applicable to MAC and Windows platform, and thus does not conflict with
-KVM.
+KVM. This option is deprecated, use @option{-accel hax} instead.
ETEXI
DEF("xen-domid", HAS_ARG, QEMU_OPTION_xen_domid,
recommended that a persistent set of parameters be generated
upfront and saved.
+@item -object tls-creds-psk,id=@var{id},endpoint=@var{endpoint},dir=@var{/path/to/keys/dir}[,username=@var{username}]
+
+Creates a TLS Pre-Shared Keys (PSK) credentials object, which can be used to provide
+TLS support on network backends. The @option{id} parameter is a unique
+ID which network backends will use to access the credentials. The
+@option{endpoint} is either @option{server} or @option{client} depending
+on whether the QEMU network backend that uses the credentials will be
+acting as a client or as a server. For clients only, @option{username}
+is the username which will be sent to the server. If omitted
+it defaults to ``qemu''.
+
+The @var{dir} parameter tells QEMU where to find the keys file.
+It is called ``@var{dir}/keys.psk'' and contains ``username:key''
+pairs. This file can most easily be created using the GnuTLS
+@code{psktool} program.
+
+For server endpoints, @var{dir} may also contain a file
+@var{dh-params.pem} providing diffie-hellman parameters to use
+for the TLS server. If the file is missing, QEMU will generate
+a set of DH parameters at startup. This is a computationally
+expensive operation that consumes random pool entropy, so it is
+recommended that a persistent set of parameters be generated
+up front and saved.
+
@item -object tls-creds-x509,id=@var{id},endpoint=@var{endpoint},dir=@var{/path/to/cred/dir},priority=@var{priority},verify-peer=@var{on|off},passwordid=@var{id}
Creates a TLS anonymous credentials object, which can be used to provide
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