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2013-04-22Add option to mlock qemu and guest memorySatoru Moriya1-0/+13
In certain scenario, latency induced by paging is significant and memory locking is needed. Also, in the scenario with untrusted guests, latency improvement due to mlock is desired. This patch introduces a following new option to mlock guest and qemu memory: -realtime mlock=on|off Signed-off-by: Satoru Moriya <satoru.moriya@hds.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1366382526-26146-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-15block: Add support for Secure Shell (ssh) block device.Richard W.M. Jones1-0/+12
qemu-system-x86_64 -drive file=ssh://hostname/some/image QEMU will ssh into 'hostname' and open '/some/image' which is made available as a standard block device. You can specify a username (ssh://user@host/...) and/or a port number (ssh://host:port/...). You can also use an alternate syntax using properties (file.user, file.host, file.port, file.path). Current limitations: - Authentication must be done without passwords or passphrases, using ssh-agent. Other authentication methods are not supported. - Uses a single connection, instead of concurrent AIO with multiple SSH connections. This is implemented using libssh2 on the client side. The server just requires a regular ssh daemon with sftp-server support. Most ssh daemons on Unix/Linux systems will work out of the box. Signed-off-by: Richard W.M. Jones <rjones@redhat.com> Cc: Stefan Hajnoczi <stefanha@gmail.com> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-04-03help: add docs for missing 'queues' option of tapJason Wang1-1/+2
Cc: Markus Armbruster <armbru@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Jason Wang <jasowang@redhat.com> Message-id: 1361545072-30426-1-git-send-email-jasowang@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-25QMP: TPM QMP and man page documentation updatesCorey Bryant1-1/+2
Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-03-22Fix typos and misspellingsPeter Maydell1-1/+1
Fix various typos and misspellings. The bulk of these were found with codespell. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-19add a boot option to do strict bootAmos Kong1-2/+6
Seabios already added a new device type to halt booting. Qemu can add "HALT" at the end of bootindex string, then seabios will halt booting after trying to boot from all selected devices. This patch added a new boot option to configure if boot from un-selected devices. This option only effects when boot priority is changed by bootindex options, the old style(-boot order=..) will still try to boot from un-selected devices. v2: add HALT entry in get_boot_devices_list() v3: rebase to latest qemu upstream Signed-off-by: Amos Kong <akong@redhat.com> Message-id: 1363674207-31496-1-git-send-email-akong@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-12Add support for cancelling of a TPM commandStefan Berger1-3/+10
This patch adds support for cancelling an executing TPM command. In Linux for example a user can cancel a command through the TPM's sysfs 'cancel' entry using echo "1" > /sysfs/class/misc/tpm0/device/cancel This patch propagates the cancellation of a command inside a VM to the host TPM's sysfs entry. It also uses the possibility to cancel the command before QEMU VM shutdown or reboot, which helps in preventing QEMU from hanging while waiting for the completion of the command. To relieve higher layers or users from having to determine the TPM's cancel sysfs entry, the driver searches for the entry in well known locations. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com> Message-id: 1361987275-26289-7-git-send-email-stefanb@linux.vnet.ibm.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-12Add a TPM Passthrough backend driver implementationStefan Berger1-1/+35
This patch is based of off version 9 of Stefan Berger's patch series "QEMU Trusted Platform Module (TPM) integration" and adds a new backend driver for it. This patch adds a passthrough backend driver for passing commands sent to the emulated TPM device directly to a TPM device opened on the host machine. Thus it is possible to use a hardware TPM device in a system running on QEMU, providing the ability to access a TPM in a special state (e.g. after a Trusted Boot). This functionality is being used in the acTvSM Trusted Virtualization Platform which is available on [1]. Usage example: qemu-system-x86_64 -tpmdev passthrough,id=tpm0,path=/dev/tpm0 \ -device tpm-tis,tpmdev=tpm0 \ -cdrom test.iso -boot d Some notes about the host TPM: The TPM needs to be enabled and activated. If that's not the case one has to go through the BIOS/UEFI and enable and activate that TPM for TPM commands to work as expected. It may be necessary to boot the kernel using tpm_tis.force=1 in the boot command line or 'modprobe tpm_tis force=1' in case of using it as a module. Regards, Andreas Niederl, Stefan Berger [1] http://trustedjava.sourceforge.net/ Signed-off-by: Andreas Niederl <andreas.niederl@iaik.tugraz.at> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com> Message-id: 1361987275-26289-6-git-send-email-stefanb@linux.vnet.ibm.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-12Support for TPM command line optionsStefan Berger1-0/+33
This patch adds support for TPM command line options. The command line options supported here are ./qemu-... -tpmdev passthrough,path=<path to TPM device>,id=<id> -device tpm-tis,tpmdev=<id>,id=<other id> and ./qemu-... -tpmdev help where the latter works similar to -soundhw help and shows a list of available TPM backends (for example 'passthrough'). Using the type parameter, the backend is chosen, i.e., 'passthrough' for the passthrough driver. The interpretation of the other parameters along with determining whether enough parameters were provided is pushed into the backend driver, which needs to implement the interface function 'create' and return a TPMDriverOpts structure if the VM can be started or 'NULL' if not enough or bad parameters were provided. Monitor support for 'info tpm' has been added. It for example prints the following: (qemu) info tpm TPM devices: tpm0: model=tpm-tis \ tpm0: type=passthrough,path=/dev/tpm0,cancel-path=/sys/devices/pnp0/00:09/cancel Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com> Message-id: 1361987275-26289-2-git-send-email-stefanb@linux.vnet.ibm.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-08Fix the wrong description in qemu manualLei Li1-1/+1
Fix LP#1151450 the wrong description in qemu manual: 'qemu-system-x86_84' should be 'qemu-system-x86_64'. Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-04Merge remote-tracking branch 'stefanha/block' into stagingAnthony Liguori1-14/+4
# By MORITA Kazutaka (5) and others # Via Stefan Hajnoczi * stefanha/block: block: for HMP commit() operations on 'all', skip non-COW drives sheepdog: add support for connecting to unix domain socket sheepdog: use inet_connect to simplify connect code sheepdog: accept URIs move socket_set_nodelay to osdep.c slirp/tcp_subr.c: fix coding style in tcp_connect dataplane: remove EventPoll in favor of AioContext virtio-blk: fix unplug + virsh reboot ide/macio: Fix macio DMA initialisation.
2013-03-04sheepdog: add support for connecting to unix domain socketMORITA Kazutaka1-1/+1
This patch adds support for a unix domain socket for a connection between qemu and local sheepdog server. You can use the unix domain socket with the following syntax: $ qemu sheepdog+unix:///<vdiname>?socket=<socket path>[#snapid] Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-04sheepdog: accept URIsMORITA Kazutaka1-14/+4
The URI syntax is consistent with the NBD and Gluster syntax. The syntax is sheepdog[+tcp]://[host:port]/vdiname[#snapid|#tag] Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-02-27doc: document -netdev hubportStefan Hajnoczi1-1/+10
Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-02-26qemu-log: default to stderr for logging outputPeter Maydell1-5/+5
Switch the default for qemu_log logging output from "/tmp/qemu.log" to stderr. This is an incompatible change in some sense, but logging is mostly used for debugging purposes so it shouldn't affect production use. The previous behaviour can be obtained by adding "-D /tmp/qemu.log" to the command line. This change requires us to: * update all the documentation/help text (we take the opportunity to smooth out minor inconsistencies between the phrasing in linux-user/bsd-user/system help messages) * make linux-user and bsd-user defer to qemu-log for the default logging destination rather than overriding it themselves * ensure that all logfile closing is done via qemu_log_close() and that that function doesn't close stderr as well as the obvious change to the behaviour of do_qemu_set_log() when no logfile name has been specified. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1361901160-28729-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-22blockdev: add discard suboption to -drivePaolo Bonzini1-0/+2
Add support for BDRV_O_UNMAP from the QEMU command-line. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-02-21help: add docs for multiqueue tap optionsJason Wang1-1/+3
Cc: Markus Armbruster <armbru@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Message-id: 1361354641-51969-1-git-send-email-jasowang@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18doc help: Collect block device stuff under its own headingMarkus Armbruster1-291/+281
Collect them from "Standard options", "File system options", "Virtual File system pass-through options", "Debug/Expert options". Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-8-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18doc help: A few options are under inappropriate headings, fixMarkus Armbruster1-41/+39
--device is under heading "USB options". --name and --uuid are under "Virtual File system pass-through options". Move all three to "Standard options". Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-7-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18help: Fix markup of heading "USB options" so it appears in -helpMarkus Armbruster1-1/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-6-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18doc: Fix texinfo @table markup in qemu-options.hxMarkus Armbruster1-19/+37
End tables before headings, start new ones afterwards. Fixes incorrect indentation of headings "File system options" and "Virtual File system pass-through options" in manual page and qemu-doc. Normalize markup some to increase chances it survives future edits. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-5-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18doc: Fill some option doc gaps in manual page and qemu-docMarkus Armbruster1-4/+12
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-4-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18doc: Fix some option entries in qemu-doc's function indexMarkus Armbruster1-2/+5
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-3-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-18help: Drop bogus help on -qtest and -qtest-logMarkus Armbruster1-7/+3
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1360781383-28635-2-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-13chardev: Fix manual page and qemu-doc for -chardev ttyMarkus Armbruster1-1/+1
Broken in commit d59044ef. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Message-id: 1360767256-610-2-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-06qemu-char: Saner naming of memchar stuff & doc fixesMarkus Armbruster1-8/+5
New device, has never been released, so we can still improve things without worrying about compatibility. Naming is a mess. The code calls the device driver CirMemCharDriver, the public API calls it "memory", "memchardev", or "memchar", and the special commands are named like "memchar-FOO". "memory" is a particularly unfortunate choice, because there's another character device driver called MemoryDriver. Moreover, the device's distinctive property is that it's a ring buffer, not that's in memory. Therefore: * Rename CirMemCharDriver to RingBufCharDriver, and call the thing a "ringbuf" in the API. * Rename QMP and HMP commands from memchar-FOO to ringbuf-FOO. * Rename device parameter from maxcapacity to size (simple words are good for you). * Clearly mark the parameter as optional in documentation. * Fix error reporting so that chardev-add reports to current monitor, not stderr. * Replace cirmem in C identifiers by ringbuf. * Rework documentation. Document the impact of our crappy UTF-8 handling on reading. * QMP examples that even work. I could split this up into multiple commits, but they'd change the same documentation lines multiple times. Not worth it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-25qemu-char: Add new char backend CirMemCharDriverLei Li1-0/+10
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-01-21vnc: added initial websocket protocol supportTim Hardeck1-0/+8
This patch adds basic Websocket Protocol version 13 - RFC 6455 - support to QEMU VNC. Binary encoding support on the client side is mandatory. Because of the GnuTLS requirement the Websockets implementation is optional (--enable-vnc-ws). To activate Websocket support the VNC option "websocket"is used, for example "-vnc :0,websocket". The listen port for Websocket connections is (5700 + display) so if QEMU VNC is started with :0 the Websocket port would be 5700. As an alternative the Websocket port could be manually specified by using ",websocket=<port>" instead. Parts of the implementation base on Anthony Liguori's QEMU Websocket patch from 2010 and on Joel Martin's LibVNC Websocket implementation. Signed-off-by: Tim Hardeck <thardeck@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-16chardev: add parallel chardev support to chardev-add (qmp)Gerd Hoffmann1-1/+4
Also alias the old parport name to parallel for -chardev. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-01-16chardev: add serial chardev support to chardev-add (qmp)Gerd Hoffmann1-5/+4
Similar to file, except that no separate in/out files are supported because it's pointless for direct device access. Also the special tty ioctl hooks (pass through linespeed settings etc) are activated on Unix. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-12-17spice-qemu-char: add spiceport chardevMarc-André Lureau1-0/+13
Add a new spice chardev to allow arbitrary communication between the host and the Spice client via the spice server. Examples: This allows the Spice client to have a special port for the qemu monitor: ... -chardev spiceport,name=org.qemu.monitor,id=monitorport -mon chardev=monitorport v2: - remove support for chardev to chardev linking - conditionnaly compile with SPICE_SERVER_VERSION Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-12-07qemu-options: Fix space at EOLMichal Privoznik1-1/+1
There's no need to add a space at the end of line. Moreover, it can make problems in some projects that store the help output into a file (and run couple of tests based on that) and have space at EOL forbidden. Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-11-30Documentation: Update block cache mode informationKevin Wolf1-20/+20
Somehow we forgot to update this when cache=writeback became the default. While changing the information on the default, also make the description of all caches modes a bit more accurate. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-11-23Legacy qemu-kvm options have no argumentBruce Rogers1-4/+4
The options no-kvm, no-kvm-pit, no-kvm-pit-reinjection, and no-kvm-irqchip should be marked as having no argument. Signed-off-by: Bruce Rogers <brogers@suse.com> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-11-19Merge remote-tracking branch 'kiszka/queues/slirp' into stagingAnthony Liguori1-3/+15
* kiszka/queues/slirp: slirp: Add domain-search option to slirp's DHCP server slirp: Don't crash on packets from 0.0.0.0/8. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-19Merge remote-tracking branch 'kwolf/for-anthony' into stagingAnthony Liguori1-0/+17
* kwolf/for-anthony: (26 commits) qemu-io: Use bdrv_drain_all instead of qemu_aio_flush megasas: Use bdrv_drain_all instead of qemu_aio_flush vmdk: Fix data corruption bug in WRITE and READ handling fdc: remove last usage of FD_STATE_SEEK fdc: fix typo in zero constant fdc: remove double affectation of FD_MSR_CMDBUSY flag fdc-tests: add tests for VERIFY command fdc: implement VERIFY command fdc-test: Check READ ID fdc: fix false FD_SR0_SEEK fdc: fix FD_SR0_SEEK for initial seek on DMA transfers fdc: fix FD_SR0_SEEK for non-DMA transfers and multi sectors transfers fdc: use status0 field instead of a local variable fdc-test: add tests for non-DMA READ command fdc-test: insert media before fuzzing registers fdc-test: split test_media_change() test, so insert part can be reused fdc: Remove status0 parameter from fdctrl_set_fifo() aio: rename AIOPool to AIOCBInfo aio: use g_slice_alloc() for AIOCB pooling aio: switch aiocb_size type int -> size_t ... Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-16vl: add -object option to create QOM objects from the command lineAnthony Liguori1-0/+8
This will create a new QOM object in the '/objects' path. Note that properties are set in order which allows for simple objects to be initialized entirely with this option and then realized. This option is roughly equivalent to -device but for things that are not devices. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-15slirp: Add domain-search option to slirp's DHCP serverKlaus Stengel1-3/+15
This patch will allow the user to include the domain-search option in replies from the built-in DHCP server. The domain suffixes can be specified by adding dnssearch= entries to the "-net user" parameter. [Jan: tiny style adjustments] Signed-off-by: Klaus Stengel <Klaus.Stengel@asamnet.de> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-11-14qemu: Document GlusterFS block driver usageBharata B Rao1-0/+17
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-10-30Emulate qemu-kvms -no-kvm optionJan Kiszka1-0/+3
Releases of qemu-kvm will be interrupted at qemu 1.3.0. Users should switch to plain qemu releases. To avoid breaking scenarios which are setup with command line options specific to qemu-kvm, port these switches from qemu-kvm to qemu.git. Port -no-kvm option. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-30Issue warning when deprecated -tdf option is usedJan Kiszka1-0/+3
Releases of qemu-kvm will be interrupted at qemu 1.3.0. Users should switch to plain qemu releases. To avoid breaking scenarios which are setup with command line options specific to qemu-kvm, port these switches from qemu-kvm to qemu.git. Port -tdf option. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-30Use global properties to emulate -no-kvm-pit-reinjectionJan Kiszka1-0/+4
Releases of qemu-kvm will be interrupted at qemu 1.3.0. Users should switch to plain qemu releases. To avoid breaking scenarios which are setup with command line options specific to qemu-kvm, port these switches from qemu-kvm to qemu.git. Port -no-kvm-pit-reinjection. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-30Issue warning when deprecated -no-kvm-pit is usedJan Kiszka1-0/+3
Releases of qemu-kvm will be interrupted at qemu 1.3.0. Users should switch to plain qemu releases. To avoid breaking scenarios which are setup with command line options specific to qemu-kvm, port these switches from qemu-kvm to qemu.git. Port -no-kvm-pit option. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-30Use machine options to emulate -no-kvm-irqchipJan Kiszka1-0/+3
Releases of qemu-kvm will be interrupted at qemu 1.3.0. Users should switch to plain qemu releases. To avoid breaking scenarios which are setup with command line options specific to qemu-kvm, port these switches from qemu-kvm to qemu.git. Port -no-kvm-irqchip option. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-24qemu-config: Add new -add-fd command line optionCorey Bryant1-0/+36
This option can be used for passing file descriptors on the command line. It mirrors the existing add-fd QMP command which allows an fd to be passed to QEMU via SCM_RIGHTS and added to an fd set. This can be combined with commands such as -drive to link file descriptors in an fd set to a drive: qemu-kvm -add-fd fd=3,set=2,opaque="rdwr:/path/to/file" -add-fd fd=4,set=2,opaque="rdonly:/path/to/file" -drive file=/dev/fdset/2,index=0,media=disk This example adds dups of fds 3 and 4, and the accompanying opaque strings to the fd set with ID=2. qemu_open() already knows how to handle a filename of this format. qemu_open() searches the corresponding fd set for an fd and when it finds a match, QEMU goes on to use a dup of that fd just like it would have used an fd that it opened itself. Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-10-19qemu-options.hx: Change from recommending '?' to 'help'Peter Maydell1-21/+17
Update the -help output and documentation so that it recommends 'help' rather than '?' for the various "list valid values for this option" cases. '?' is deprecated (as it can fail confusingly if not quoted), so it's better to steer users towards 'help'. ('?' still works, for backwards compatibility.) This is the -help option part of the change otherwise done in commit c8057f9, since we are now past release 1.2 and free to change our help text without worrying about breaking libvirt. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-25add a boot parameter to set reboot timeoutAmos Kong1-3/+9
Added an option to let qemu transfer a configuration file to bios, "etc/boot-fail-wait", which could be specified by command -boot reboot-timeout=T T have a max value of 0xffff, unit is ms. With this option, guest will wait for a given time if not find bootabled device, then reboot. If reboot-timeout is '-1', guest will not reboot, qemu passes '-1' to bios by default. This feature need the new seabios's support. Seabios pulls the value from the fwcfg "file" interface, this interface is used because SeaBIOS needs a reliable way of obtaining a name, value size, and value. It in no way requires that there be a real file on the user's host machine. Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-17Merge remote-tracking branch 'stefanha/net' into stagingAnthony Liguori1-0/+7
* stefanha/net: net: EAGAIN handling for net/socket.c TCP net: EAGAIN handling for net/socket.c UDP net: asynchronous send/receive infrastructure for net/socket.c net: broadcast hub packets if at least one port can receive net: fix usbnet_receive() packet drops net: clean up usbnet_receive() net: add -netdev options to man page net: do not report queued packets as sent net: add receive_disabled logic to iov delivery path eepro100: Fix network hang when rx buffers run out xen: flush queue when getting an event e1000: flush queue whenever can_receive can go from false to true net: notify iothread after flushing queue
2012-09-17add -machine mem-merge=on|off optionLuiz Capitulino1-1/+6
It allows to disable memory merge support (KSM on Linux), which is enabled by default otherwise. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-14net: add -netdev options to man pageStefan Hajnoczi1-0/+7
Document the -netdev syntax which supercedes the older -net syntax. This patch is a first step to making -netdev prominent in the QEMU manual. Reported-by: Anatoly Techtonik <techtonik@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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