Izik Eidus [Thu, 8 Oct 2009 14:39:39 +0000 (16:39 +0200)]
ksm support
Call MADV_MERGEABLE on guest memory allocations. MADV_MERGABLE will be
available starting in Linux 2.6.32. This system call registers a region of
virtual address space with Linux as a candidate for transparent memory
sharing.
Patchworks-ID: 35447 Signed-off-by: Izik Eidus <ieidus@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Kevin Wolf [Thu, 8 Oct 2009 13:02:08 +0000 (15:02 +0200)]
qcow2: Bring synchronous read/write back to life
When the synchronous read and write functions were dropped, they were replaced
by generic emulation functions. Unfortunately, these emulation functions don't
provide the same semantics as the original functions did.
The original bdrv_read would mean that we read some data synchronously and that
we won't be interrupted during this read. The latter assumption is no longer
true with the emulation function which needs to use qemu_aio_poll and therefore
allows the callback of any other concurrent AIO request to be run during the
read. Which in turn means that (meta)data read earlier could have changed and
be invalid now. qcow2 is not prepared to work in this way and it's just scary
how many places there are where other requests could run.
I'm not sure yet where exactly it breaks, but you'll see breakage with virtio
on qcow2 with a backing file. Providing synchronous functions again fixes the
problem for me.
Patchworks-ID: 35437 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Mon, 12 Oct 2009 08:52:00 +0000 (09:52 +0100)]
net: fix multiple NICs causing net opts process to stop
For NICs, net_init_client() returns the index into the NICInfo table.
qemu_opts_foreach() interprets non-zero as an error return an stops
iterating over the options.
So, if you have more than one '-net nic' on the command line, subsequent
'-net' options do not get processed.
Fix this by making net_client_init() only return non-zero if
net_init_client() returns an error.
Reported-by: Peter Lieven <pl@dlh.net>
Patchworks-ID: 35736 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Thu, 8 Oct 2009 18:58:31 +0000 (19:58 +0100)]
net: refactor packet queueing code
The packet queue code is fairly standalone, has some complex details and
easily reusable. It makes sense to split it out on its own. This patch
doesn't contain any functional changes.
Patchworks-ID: 35511 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Thu, 8 Oct 2009 18:58:30 +0000 (19:58 +0100)]
net: allow NICs to be connected to netdevs
Introduce a 'peer' member to VLANClientState as an alternative
to a vlan. The idea being that packets are transfered directly
from peer clients rather than going through a vlan.
Patchworks-ID: 35516 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Thu, 8 Oct 2009 18:58:27 +0000 (19:58 +0100)]
net: handle -netdevice options
Same as for -net except for:
- only tap, user, vde and socket types are supported
- the vlan parameter is not allowed
- the name parameter is not allowed but the id parameter is
required
Patchworks-ID: 35517 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Thu, 8 Oct 2009 18:58:24 +0000 (19:58 +0100)]
net: allow clients not associated with a vlan
Allow net clients to be created which are not connected to any vlan.
This is needed by Gerd in order to allow adding -device nic, where
the absence of a vlan parameter will not imply vlan=0. Also needed
to allow adding a -netdevice option which doesn't connect the backend
to a vlan.
Patchworks-ID: 35513 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Mark McLoughlin [Thu, 8 Oct 2009 18:58:22 +0000 (19:58 +0100)]
net: remove id field from NICInfo
Just use the name field instead since we now use the id paramater as
the name, if supplied. Only implication with this change is that if
id is not supplied, the value of the name paramater is used as an
id.
Patchworks-ID: 35512 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Stefan Weil [Fri, 9 Oct 2009 17:49:58 +0000 (19:49 +0200)]
eepro100: Remove unused device status entries
Once upon the time when QEMU hacking was fun
there was a brave knight who wanted to have
a driver for a special intel nic.
So he started by cloning ne2000.c which also
meant that the new born eepro100.c was
immediately three years old.
Other knights who also wanted to have fun and
take their part in the battle thought that it
would be a good idea to remove stupid code
which says "missing nic load, missing nic save".
They saved everything they saw, man and women,
ne2000 code and runtime address offsets, and
put all saved elements in a prison called
vm data.
When the first knight came back and noticed
the unhappy prisoners, he wanted to set them
free. But the keepers of the keys told him
that they would have to stay there forever
for compatibility reasons.
So our brave knight now takes a new effort
to save the souls of the poor prisoners by
removing their names.
Their bodies will have to rot in the dungeons
of compatibility forever, watched by the
keepers of the keys.
Patchworks-ID: 35635 Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Artyom Tarasenko [Tue, 13 Oct 2009 21:46:24 +0000 (23:46 +0200)]
scsi disk block descriptor v2
The SCSI-2 documentation suggests, that although the block
descriptor is optional for an arbitrary SCSI-2 device (chapter 8.2.10,
http://ldkelley.com/SCSI2/SCSI2/SCSI2/SCSI2/SCSI2-08.html )
it is mandatory for a disk: chapters 9.1.2, 9.3.3
( http://ldkelley.com/SCSI2/SCSI2/SCSI2/SCSI2-09.html ) don't say
"optional" any more, just "The block descriptor in the MODE SENSE
data describes the block lengths that are used on the medium."
v2: limit the number of sectors reported in the block descriptor to 24 bits.
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
François Revol [Tue, 25 Aug 2009 09:14:10 +0000 (11:14 +0200)]
Fixed wacom emulation
- for absolute mode, scale coordinates to the real device maximum values,
since some drivers (on Haiku and Linux at least) need them as such,
and the HID descriptor is boggus on some models anyway,
- keep the coordinates even when no button is pressed, on real tablet
the pen is sensed on the surface even without direct contact,
and drivers expect this,
- map left button to pressure according to what the Haiku driver wants,
- map the right button to the pen button,
- map the middle button to the eraser,
- use asynchronous reporting as the hid code does, stops the Haiku driver
(and probably others) from spending 50% cpu polling for changes.
Signed-off-by: François Revol <revol@free.fr> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Gerd Hoffmann [Wed, 7 Oct 2009 11:37:06 +0000 (13:37 +0200)]
rom loader: fix sparc -kernel boot.
Changes:
(1) register pstrcpy_targphys() in rom list, it is used for kernel
command lines by a number of architectures.
(2) add rom_ptr() function to get a pointer for applying changes
to loaded images. Needed for example to tell the linux kernel
where it finds the initrd image by updating the header.
(3) make sparc use rom_ptr for initrd setup.
booting sparc-test works now, and 'info roms' shows this:
Juan Quintela [Wed, 7 Oct 2009 14:56:24 +0000 (16:56 +0200)]
ide: split cmd646 and piix from pci.c
This patch splits cmd646 specific code from pci.c.
This patch splits piix4 specific code from pci.c.
And compile new piix.o and cmd646.o when they are needed.
The only change that is not code movemet is removal of cmd646 specific parts
in bmdma_readb/writeb for piix.
Patchworks-ID: 35301 Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Edgar E. Iglesias [Sat, 10 Oct 2009 15:34:27 +0000 (17:34 +0200)]
CRIS: Segmented addressing only for kernel mode.
Segmented translation through the CRIS MMU is only done for
accesses in kernel mode. In user-mode, all accesses are treated
as paged regardless of the mode config in RW_MM_CFG.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Jan Kiszka [Wed, 7 Oct 2009 16:19:40 +0000 (18:19 +0200)]
pcnet: Drop unused recv_pos field
This state field was never used, simply remained 0. Drop it from the
PCNetState and update the save/restore code accordingly, keeping
backward compatibility.
Patchworks-ID: 35314 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Luiz Capitulino [Wed, 7 Oct 2009 16:42:00 +0000 (13:42 -0300)]
monitor: Convert do_cont() to QObject
Appropriate error handling support will be needed to have
encrypted images working under the future machine protocol,
but this initial conversion will work with the current
user protocol.
Patchworks-ID: 35348 Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Luiz Capitulino [Wed, 7 Oct 2009 16:41:55 +0000 (13:41 -0300)]
monitor: do_info(): handle new and old info handlers
do_info() is special, its job is to call 'info handlers'.
This is similar to what monitor_handle_command() does,
therefore do_info() also has to distinguish among new and
old style info handlers.
This commit converts do_info() to the new QObject style and
makes the appropriate changes so that it can handle both
info handlers styles.
In the future, when all handlers are converted to QObject's
style, it will be possible to share more code with
monitor_handle_command().
This commit also introduces a new function called
monitor_user_noop(), it should be used by handlers which do
not have data to print.
This is the case of do_info().
Patchworks-ID: 35341 Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Luiz Capitulino [Wed, 7 Oct 2009 16:41:54 +0000 (13:41 -0300)]
monitor: Handle new and old style handlers
This commit changes monitor_handle_command() to support old style
_and_ new style handlers.
New style handlers are protocol independent, they return their
data to the Monitor, which in turn decides how to print them
(ie. user protocol vs. machine protocol).
Converted handlers will use the 'user_print' member of 'mon_cmd_t'
to define its user protocol function, which will be called to print
data in the user protocol format.
Handlers which don't have 'user_print' defined are not converted
and are handled as usual.
Patchworks-ID: 35340 Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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