Commit Graph

103 Commits

Author SHA1 Message Date
mst@redhat.com 5430a28fe4 vhost: force vhost off for non-MSI guests
When MSI is off, each interrupt needs to be bounced through the io
thread when it's set/cleared, so vhost-net causes more context switches and
higher CPU utilization than userspace virtio which handles networking in
the same thread.

We'll need to fix this by adding level irq support in kvm irqfd,
for now disable vhost-net in these configurations.

Added a vhostforce flag to force vhost-net back on.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-01 16:50:44 -06:00
Michael S. Tsirkin f157ed202e tap: safe sndbuf default
With current sndbuf default value, a blocked
target guest can prevent another guest from
transmitting any packets. While current
sndbuf value (1M) is reported to help some
UDP based workloads, the default should
be safe (0).

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-01 16:50:44 -06:00
Alon Levy cbcc6336ce spice: add chardev (v5)
Adding a chardev backend for spice, where spice determines what
to do with it based on the name attribute given during chardev creation.
For usage by spice vdagent in conjunction with a properly named
virtio-serial device, and future smartcard channel usage.

Example usage:
 qemu -device virtio-serial -chardev spicevmc,name=vdagent,id=vdagent \
 -device virtserialport,chardev=vdagent,name=com.redhat.spice.0

v4->v5:
 * add tracing events
 * fix missing comma
 * fix help string to show debug is optional

v3->v4:
 * updated commit message

v1->v3 changes: (v2 had a wrong commit message)
 * removed spice-qemu-char.h, folded into ui/qemu-spice.h
 * removed dead IOCTL code
 * removed comment
 * removed ifdef CONFIG_SPICE from qemu-config.c and qemu-options.hx help.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-01-24 15:41:40 +01:00
Aurelien Jarno 818c2e1b97 Merge branch 'spice.v23.pull' of git://anongit.freedesktop.org/spice/qemu
* 'spice.v23.pull' of git://anongit.freedesktop.org/spice/qemu:
  vnc/spice: add set_passwd monitor command.
  vnc: support password expire
  vnc: auth reject cleanup
  spice: add qmp 'query-spice' and hmp 'info spice' commands.
  spice: connection events.
  spice: add qxl device
  spice: add qxl vgabios binary.
2010-12-27 22:59:48 +01:00
Gerd Hoffmann a19cbfb346 spice: add qxl device
qxl is a paravirtual graphics card.  The qxl device is the bridge
between the guest and the spice server (aka libspice-server).  The
spice server will send the rendering commands to the spice client, which
will actually render them.

The spice server is also able to render locally, which is done in case
the guest wants read something from video memory.  Local rendering is
also used to support display over vnc and sdl.

qxl is activated using "-vga qxl".  qxl supports multihead, additional
cards can be added via '-device qxl".

[ v2: add copyright to files                     ]
[ v2: use qemu-common.h for standard includes    ]
[ v2: create separate qxl-vga device for primary ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2010-12-09 14:23:24 +01:00
Mike Ryan 3a75e74c76 net/sock: option to specify local address
Add an option to specify the host IP to send multicast packets from,
when using a multicast socket for networking. The option takes an IP
address and sets the IP_MULTICAST_IF socket option, which causes the
packets to use that IP's interface as an egress.

This is useful if the host machine has several interfaces with several
virtual networks across disparate interfaces.

Signed-off-by: Mike Ryan <mikeryan@ISI.EDU>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-09 12:45:50 +02:00
Gerd Hoffmann 7d72e76228 intel-hda: documentation update
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
2010-11-02 00:41:04 +03:00
Gerd Hoffmann 84a23f251f spice: add misc config options
This patch adds a few more options to tweak spice server behavior.
The documentation update chunk has the details ;)
2010-10-08 12:49:51 +02:00
Gerd Hoffmann 333b0eebcc spice: add config options for the listening address
Make listening address configurable.  Also add options to
force using IPv4 or IPv6.
2010-10-08 12:49:51 +02:00
Gerd Hoffmann 17b6dea08b spice: add config options for channel security.
This allows to enforce tls or plaintext usage for certain spice
channels.

[ v2: code style fixup ]
2010-10-08 12:49:51 +02:00
Yonit Halperin 9f04e09e36 spice: make compression configurable.
This patch adds options to the -spice command line switch to
configure image compression.

[ v2: speling fix in the documentation ]
2010-10-08 12:49:51 +02:00
Gerd Hoffmann c448e8552b spice: tls support
Add options to the -spice command line switch to setup tls.
2010-10-08 12:49:51 +02:00
Gerd Hoffmann 29b0040be6 spice: core bits
Add -spice command line switch.  Has support setting passwd and port for
now.  With this patch applied the spice client can successfully connect
to qemu.  You can't do anything useful yet though.
2010-09-21 18:36:42 +02:00
Prerna Saxena ab6540d55e trace: Add trace file name command-line option
This patch adds an optional command line switch '-trace' to specify the
filename to write traces to, when qemu starts.
Eg, If compiled with the 'simple' trace backend,
[temp@system]$ qemu -trace FILENAME IMAGE
Allows the binary traces to be written to FILENAME instead of the option
set at config-time.

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2010-09-09 16:22:44 -05:00
Aneesh Kumar K.V 12848bfc5d virtio-9p: Add SM_NONE security model
This is equivalent to SM_PASSTHROUGH security model.
The only exception is, failure of privilige operation like chown
are ignored. This makes a passthrough like security model usable
for people who runs kvm as non root

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2010-09-08 22:56:42 +05:30
Gerd Hoffmann 03b0ba70ab compile -fsdev and -virtfs cmd line options unconditionally.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-08-22 17:11:06 -05:00
Aurelien Jarno cdc6f54200 Merge branch 'for-anthony' of git://repo.or.cz/qemu/kevin
* 'for-anthony' of git://repo.or.cz/qemu/kevin:
  Fix -snapshot deleting images on disk change
  block: Use error codes from lower levels for error message
  block: default to 0 minimal / optiomal I/O size
  move 'unsafe' to end of caching modes in help
  virtio-blk: Create exit function to unregister savevm
  block migration: propagate return value when bdrv_write() returns < 0
  ide/atapi: add support for GET EVENT STATUS NOTIFICATION
2010-07-30 21:12:24 +02:00
Corentin Chary 6f9c78c149 vnc: add lossy option
The lossy option can be used to enable lossy compression
methods like gradient or jpeg. This patch disable them by
default.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-07-26 17:23:53 -05:00
Bruce Rogers 6c6b6ba20a move 'unsafe' to end of caching modes in help
Libvirt parses qemu help output to determine qemu features. In particular
it probes for the following: "cache=writethrough|writeback|none". The
addition of the unsafe cache mode was inserted within this string, as
opposed to being added to the end, which impacted libvirt's probe.
Unbreak libvirt by keeping the existing cache modes intact and add
unsafe to the end.

This problem only manifests itself if a caching mode is explicitly
specified in the libvirt xml, in which case older syntax for caching is
passed to qemu, which it  no longer understands.

Signed-off-by: Bruce Rogers <brogers@novell.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-07-26 13:39:39 +02:00
Aurelien Jarno b7fdb3ab0e qemu-options: add documentation for stdio signal=on|off
Commit 5989020bc1 introduced a chardev
option to disable signals on stdio. Add the corresponding documentation.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-07-13 21:13:12 +02:00
Venkateswararao Jujjuri (JV) 9ce56db6f0 virtio-9p: Introduces an option to specify the security model.
The new option is:

-fsdev fstype,id=myid,path=/share_path/,security_model=[mapped|passthrough]
-virtfs fstype,path=/share_path/,security_model=[mapped|passthrough],mnt_tag=tag

In the case of mapped security model, files are created with QEMU user
credentials and the client-user's credentials are saved in extended attributes.
Whereas in the case of passthrough security model, files on the
filesystem are directly created with client-user's credentials.

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-06-22 15:15:30 -05:00
Alexander Graf c317728872 Make cache=unsafe the default for -snapshot
When using -snapshot we don't care about data integrity of the cow file
at all, so let's disable flushing there and squeeze out the last drop
of performance we could possibly get.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-27 00:08:09 +02:00
Alexander Graf 016f5cf6ff Add cache=unsafe parameter to -drive
Usually the guest can tell the host to flush data to disk. In some cases we
don't want to flush though, but try to keep everything in cache.

So let's add a new cache value to -drive that allows us to set the cache
policy to most aggressive, disabling flushes. We call this mode "unsafe",
as guest data is not guaranteed to survive host crashes anymore.

This patch also adds a noop function for aio, so we can do nothing in AIO
fashion.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-26 20:05:14 +02:00
Markus Armbruster 9848bbf1a8 Fix -device help and documentation
Commit 6616b2ad reverted commit 40ea285c.  Looks like a mismerge to
me.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-05-22 08:37:48 +00:00
Gautham R Shenoy 3d54abc7b7 virtio-9p: Create a syntactic shortcut for the file-system pass-thru
Currently the commandline to create a virtual-filesystem pass-through between
the guest and the host is as follows:
#qemu -fsdev fstype,id=ID,path=path/to/share \
      -device virtio-9p-pci,fsdev=ID,mount_tag=tag \

This patch provides a syntactic short-cut to achieve the same as follows:
#qemu -virtfs fstype,path=path/to/share,mount_tag=tag

This will be internally expanded as:
#qemu -fsdev fstype,id=tag,path=path/to/share, \
      -device virtio-9p-pci,fsdev=tag,mount_tag=tag \

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-03 12:17:39 -05:00
Gautham R Shenoy 74db920c32 virtio-9p: Create a commandline option -fsdev
This patch creates a new command line option named -fsdev to hold any file
system specific information.

The option will currently hold the following attributes:
-fsdev fstype id=id,path=path_to_share
where
fstype: Type of the file system.
id:     Identifier used to refer to this fsdev
path:   The path on the host that is identified by this fsdev.

[aneesh.kumar@linux.vnet.ibm.com: Abstraction using FsContext]
Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-03 12:17:37 -05:00
Jan Kiszka 97331287ed chardev: Document mux option
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-26 16:36:31 -03:00
Michael S. Tsirkin 82b0d80ef6 tap: add vhost/vhostfd options
This adds vhost binary option to tap, to enable vhost net accelerator.
Default is off for now, we'll be able to make default on long term
when we know it's stable.

vhostfd option can be used by management, to pass in the fd. Assigning
vhostfd implies vhost=on.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-04-01 13:56:43 -05:00
Blue Swirl ad96090a01 Refactor target specific handling, compile vl.c only once
Move target specific functions and RAM handling to arch_init.c.

Add a flag to QEMUOptions structure to indicate for which
architectures the option is allowed, check the flag
in run time and remove conditional code in option handling.

Now that no target dependencies remain, compile vl.c only once
for all targets.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-29 19:23:52 +00:00
Aurelien Jarno 8d533561f6 qemu-options.hx: fix a typo
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-27 11:52:05 +01:00
Blue Swirl 609c1daced Fix manpage errors
Split long unbreakable lines to smaller sections.

Spotted by Debian Lintian tool:
http://lintian.debian.org/full/pkg-qemu-devel@lists.alioth.debian.org.html#qemu

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-03-18 18:41:49 +00:00
Marcelo Tosatti c902760fb2 Add option to use file backed guest memory
Port qemu-kvm's -mem-path and -mem-prealloc options. These are useful
for backing guest memory with huge pages via hugetlbfs.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
CC: john cooper <john.cooper@redhat.com>
2010-03-04 00:28:47 -03:00
Aurelien Jarno aa37520618 Fix qemu -net user,hostfwd= example
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-02-27 10:50:32 +01:00
Stefan Weil 6616b2adb5 Documentation: Add command line options to function index
* Add line options to function index.

* Add description for -set (TODO).

* Add description for -global (TODO).

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-10 12:44:25 -06:00
Paolo Bonzini e8105ebb94 vl.c: avoid preprocessor directives in a printf call
Similar to the qemu-img.c patch, but I also have to unescape remaining
% signs in qemu-options.hx.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
2010-02-08 12:12:40 +03:00
Paolo Bonzini bec7c2d414 do not interpolate % from vl.c to qemu-options.h
Since qemu-options.h is only used in vl.c, we can avoid using
brittle interpolation from a generated file.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
2010-02-08 12:12:40 +03:00
Markus Armbruster 40ea285c14 qdev: update help on -device
While there, use "property" rather than "option", for consistency with
-global.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-03 12:39:01 -06:00
Stefan Weil 95d5f08bad Documentation: Add missing texi description for command line options
Some more command line options had entries for command line help,
but documentation for texi and derived formats (man, html, info)
was missing.

For conditional options, the texi documentation was added
unconditionally.

This seems reasonable because typically man pages are
shared, and html users expect to see one documentation
(not several nearly identical documents for the different
systems).

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-26 15:42:01 -06:00
Stefan Weil 69a319d131 Documentation: Improve command line help for -device option
* Fix column for help text.

* Give some more help, especially for the new '?' parameters.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-26 15:42:01 -06:00
Anthony Liguori 292444cb87 Load global config files by default
A new option, -nodefconfig is introduced to prevent loading from the default
config location.  Otherwise, two configuration files will be searched for,
qemu.conf and target-<TARGET_NAME>.conf.

To ensure that the default configuration is overridden by a user specified
config, we introduce a two stage option parsing mechanism.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-24 09:37:26 -06:00
Amit Shah 98b19252cf virtio-console: qdev conversion, new virtio-serial-bus
This commit converts the virtio-console device to create a new
virtio-serial bus that can host console and generic serial ports. The
file hosting this code is now called virtio-serial-bus.c.

The virtio console is now a very simple qdev device that sits on the
virtio-serial-bus and communicates between the bus and qemu's chardevs.

This commit also includes a few changes to the virtio backing code for
pci and s390 to spawn the virtio-serial bus.

As a result of the qdev conversion, we get rid of a lot of legacy code.
The old-style way of instantiating a virtio console using

    -virtioconsole ...

is maintained, but the new, preferred way is to use

    -device virtio-serial -device virtconsole,chardev=...

With this commit, multiple devices as well as multiple ports with a
single device can be supported.

For multiple ports support, each port gets an IO vq pair. Since the
guest needs to know in advance how many vqs a particular device will
need, we have to set this number as a property of the virtio-serial
device and also as a config option.

In addition, we also spawn a pair of control IO vqs. This is an internal
channel meant for guest-host communication for things like port
open/close, sending port properties over to the guest, etc.

This commit is a part of a series of other commits to get the full
implementation of multiport support. Future commits will add other
support as well as ride on the savevm version that we bump up here.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20 08:25:23 -06:00
Naphtali Sprei 3f3ed5933a Added drives' readonly option
Signed-off-by: Naphtali Sprei <nsprei@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20 08:25:22 -06:00
Stefan Weil 3dbf2c7fc5 Documentation: Add missing documentation for qdev related command line options
The command line options -device, -nodefaults, -readconfig,
-writeconfig had entries for command line help, but
documentation for texi and derived formats (man, html, info)
was missing.

This also required moving "@end table" to the end of
qemu-options.hx again.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-20 08:25:22 -06:00
Bruce Rogers ca1a8a0658 make help output be a little more self-consistent
Signed-off-by: Bruce Rogers <brogers@novell.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-11 13:41:00 -06:00
H. Peter Anvin c9f398e53f debugcon: support for debugging consoles (e.g. Bochs port 0xe9)
Add generic support for debugging consoles (simple I/O ports which
when written to cause debugging output to be written to a target.)
The current implementation matches Bochs' port 0xe9, allowing the same
debugging code to be used for both Bochs and Qemu.

There is no vm state associated with the debugging port, simply
because it has none -- the entire interface is a single, stateless,
write-only port.

Most of the code was cribbed from the serial port driver.

v2: removed non-ISA variants (they can be introduced when/if someone
wants them, using code from the serial port); added configurable
readback (Bochs returns 0xe9 on a read from this register, mimic that
by default)  This retains the apparently somewhat controversial user
friendly option, however.

v3: reimplemented the user friendly option as a synthetic option
("-debugcon foo" basically ends up being a parser-level shorthand for
"-chardev stdio,id=debugcon -device isa-debugcon,chardev=debugcon") --
this dramatically reduced the complexity while keeping the same level
of user friendliness.

v4: spaces, not tabs.

v5: update to match current top of tree.  Calling qemu_chr_open()
already during parsing no longer works; defer until we are parsing the
other console-like devices.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-08 09:58:40 -06:00
Michael Tokarev 19e65b47f6 Add missing newline at the end of options list
In qemu-kvm this place looks even more "interesting":

 -runas user     Change to user id user just before starting the VM.
 -readconfig <file>
 -writeconfig <file>
                read/write config file-no-kvm         disable KVM hardware virtualization
 -no-kvm-irqchip disable KVM kernel mode PIC/IOAPIC/LAPIC
 -no-kvm-pit     disable KVM kernel mode PIT

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-28 15:22:22 +01:00
Gerd Hoffmann 6ca5582d4f add -qmp convinience switch
Acts like -monitor but switched into qmp mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12 07:59:43 -06:00
Gerd Hoffmann 22a0e04b9b add new -mon switch
Add -mon switch which maps pretty straight forward into the QemuOpts
internal representation:

  -mon chardev=<name>[,mode=[control|readline]][,[no]default]

Via config file:

[mon]
   chardev = "<name>"
   mode = "readline"
   default = "on"

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12 07:59:43 -06:00
Gerd Hoffmann d8c208dd8a default devices: add global cmd line option.
Add global command line option to disable default devices.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12 07:59:43 -06:00
Gerd Hoffmann 4e307fc883 Revert "monitor: Command-line flag to enable control mode"
This reverts commit adcb181afe.

Conflicts:

	monitor.h

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12 07:59:41 -06:00