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>
Update the IRQ state and stop the poll timer on reset. Moreover,
register the reset function with qemu.
Patchworks-ID: 35462
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
Putting it right in the middle of the explanation for "-serial udp" probably
wasn't the best idea.
Patchworks-ID: 35603
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Not all placeholders in options descriptions had the @var tag on them. Add the
tag so that it's clearly visible that they are placeholders.
Patchworks-ID: 35602
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Currently, suboptions (i.e. something like file=file for -drive) are rendered
as @code, so we're losing any @var highlighting in the man pages.
Replace them by @option, so that you actually can see what is a placeholder and
what is meant verbatim.
Patchworks-ID: 35601
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
Now that we have re-factored the packet queue code, we can re-use
it for peer-to-peer also.
Patchworks-ID: 35520
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
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>
Allows them to be cleaned up at shutdown.
This is pretty lame, but will eventually go away as we make vlans
the special case.
Patchworks-ID: 35518
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
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>
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>
Use id= in the same was as the current name= parameter; if both are
specified, id= is used.
Patchworks-ID: 35514
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Needed for e.g. looking up a file descriptor name using
monitor_get_fd() in net_init_tap()
Patchworks-ID: 35509
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Without this, I'm seeing a segfault when unpluging a NIC.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Patchworks-ID: 35519
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
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>
Fix done instruction to resume with pc=tnpc, npc=tnpc+4
Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
We're seeing various issues with the SDL audio backend and want to
switch to the pulseaudio backend. See e.g.
https://bugzilla.redhat.com/495964https://bugzilla.redhat.com/519540https://bugzilla.redhat.com/496627
The pulseaudio backend seems to work well, so we should allow it to be
selected as the default.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: malc <av1474@comtv.ru>
- 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>
In case qemu_find_file fails try to open the file as-is.
Patchworks-ID: 35263
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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:
(qemu) info roms
addr=0000000000000000 size=0x2a3828 mem=ram name="phdr #0: vmlinux-2.6.11+tcx"
addr=00000000007ff000 size=0x00000e mem=ram name="cmdline"
addr=0000000000800000 size=0x400000 mem=ram name="/root/qemu-test/sparc-test/linux.img"
addr=0000000070000000 size=0x0e4000 mem=rom name="phdr #0: /home/kraxel/projects/qemu/build-zfull/pc-bios/openbios-sparc32"
reboot via 'system_reset' works too.
Patchworks-ID: 35262
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Without this, kvm will hold the mutex while it issues its run ioctl,
and never be able to step out of it, causing a deadlock.
Patchworks-ID: 35359
Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This moves the code that depens on slirp under CONFIG_SLIRP again.
Patchworks-ID: 35372
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We have split the functions that needed it for cmd646
Patchworks-ID: 35302
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
We already have a PCIDevice at that point
Patchworks-ID: 35296
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
