The second -device fails, because it refers to drive zwei, which got
silently ignored.
Make multiple drive definitions fail cleanly.
Unfortunately, there's code that relies on multiple drive definitions
being silently ignored: main() merrily adds default drives even when
the user already defined these drives. Fix that up.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: Make drive_add() take explicit type, index parameters
Before, type & index were hidden in printf-like fmt, ... parameters,
which get expanded into an option string. Rather inconvenient for
uses later in this series.
New IF_DEFAULT to ask for the machine's default interface. Before,
that was done by having no option "if" in the option string.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: Fix regression in -drive if=scsi,index=N
Before commit 622b520f, index=12 meant bus=1,unit=5.
Since the commit, it means bus=0,unit=12. The drive is created, but
not the guest device. That's because the controllers we use with
if=scsi drives (lsi53c895a and esp) support only 7 units, and
scsi_bus_legacy_handle_cmdline() ignores drives with unit numbers
exceeding that limit.
Changing the mapping of index to bus, unit is a regression. Breaking
-drive invocations that used to work just makes it worse.
Revert the part of commit 622b520f that causes this, and clean up
some.
Note that the fix only affects if=scsi. You can still put more than 7
units on a SCSI bus with -device & friends.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: New drive_get_next(), replacing qdev_init_bdrv()
qdev_init_bdrv() doesn't belong into qdev.c; it's about drives, not
qdevs. Rename to drive_get_next, move to blockdev.c, drop the bogus
DeviceState argument, and return DriveInfo instead of
BlockDriverState.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Blue Swirl [Sat, 29 Jan 2011 08:19:15 +0000 (08:19 +0000)]
qcow2-refcount: remove write-only variables
Variables l2_modified and l2_size are not really used, remove them.
Spotted by GCC 4.6.0:
CC block/qcow2-refcount.o
/src/qemu/block/qcow2-refcount.c: In function 'qcow2_update_snapshot_refcount':
/src/qemu/block/qcow2-refcount.c:708:37: error: variable 'l2_modified' set but not used [-Werror=unused-but-set-variable]
/src/qemu/block/qcow2-refcount.c:708:9: error: variable 'l2_size' set but not used [-Werror=unused-but-set-variable]
CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
drive_init() picks the first free bus and unit number, unless the user
specifies them.
This isn't a good fit for the drive_add monitor command, because there
we specify the controller by PCI address instead of using bus number
set by drive_init().
scsi_hot_add() takes care to replace the unit number set by
drive_init() by the real one, but it neglects to replace the bus
number. Thus, bus/unit in DriveInfo may be bogus. Affects
drive_get() and drive_get_max_bus(). I'm not aware of anything bad
happening because of that; looks like by the time we're hot-plugging,
the two functions aren't used anymore. Fix it anyway.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Stefan Hajnoczi [Fri, 28 Jan 2011 17:11:59 +0000 (17:11 +0000)]
qed: Images with backing file do not require QED_F_NEED_CHECK
The consistency check on open is necessary in order to fix inconsistent
table offsets left as a result of a crash mid-operation. Images with a
backing file actually flush before updating table offsets and are
therefore guaranteed to be consistent. Do not mark these images dirty.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 26 Jan 2011 15:56:48 +0000 (16:56 +0100)]
qcow2: Add bdrv_discard support
This adds a bdrv_discard function to qcow2 that frees the discarded clusters.
It does not yet pass the discard on to the underlying file system driver, but
the space can be reused by future writes to the image.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Stefan Hajnoczi [Tue, 25 Jan 2011 16:17:14 +0000 (16:17 +0000)]
virtio-pci: Disable virtio-ioeventfd when !CONFIG_IOTHREAD
It is not possible to use virtio-ioeventfd when building without an I/O
thread. We rely on a signal to kick us out of vcpu execution. Timers
and AIO use SIGALRM and SIGUSR2 respectively. Unfortunately eventfd
does not support O_ASYNC (SIGIO) so eventfd cannot be used in a signal
driven manner.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Raise a config change interrupt when the size changed. This allows
virtio-blk guest drivers to read-read the information from the
config space once it got the config chaged interrupt.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add a monitor command that allows resizing of block devices while
qemu is running. It uses the existing bdrv_truncate method already
used by qemu-img to do it's work. Compared to qemu-img the size
parsing is very simplicistic, but I think having a properly numering
object is more useful for non-humand monitor users than having
the units and relative resize parsing.
For SCSI devices the new size can be updated in Linux guests by
doing the following shell command:
For ATA devices I don't know of a way to update the block device
size in Linux system, and for virtio-blk the next two patches
will provide an automatic update of the size when this command
is issued on the host.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Blue Swirl [Sat, 29 Jan 2011 22:52:33 +0000 (22:52 +0000)]
sdl: remove unused variable
Variable rec is not used, remove it. Spotted by GCC 4.6.0:
CC ui/sdl.o
/src/qemu/ui/sdl.c: In function 'sdl_setdata':
/src/qemu/ui/sdl.c:90:14: error: variable 'rec' set but not used [-Werror=unused-but-set-variable]
Andreas Färber [Tue, 18 Jan 2011 21:43:55 +0000 (22:43 +0100)]
prep: Remove bogus BIOS size check
r3480 added this check to account for the entry vector 0xfff00100 to be
available for CPUs that need it. Today however, the NIP is not yet
initialized at this point (zero), so the check always triggers.
Moreover, BIOS size check is already done previously, so this part can
be removed too.
Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 25 Jan 2011 10:55:15 +0000 (11:55 +0100)]
mc146818rtc: update registers after a format change
For some unknown reason, the MIPS kernel briefly changes the RTC to
binary mode during boot, switch back to BCD mode and read the time. As
the registers are updated only every second, they may still be in the
old format when they are read.
This patch forces a register update immediately after a format change
(BCD/binary or 12/24H). This avoid long fsck during boot due to time
wrap.
Aurelien Jarno [Tue, 25 Jan 2011 10:55:14 +0000 (11:55 +0100)]
virtio-blk: fix cross-endianness targets
virtio-blk doesn't work on cross-endian configuration, as endianness is
not handled correctly.
This patch adds missing endianness conversions to make virtio-blk
working. Tested on the following configurations:
- i386 guest on x86_64 host
- ppc guest on x86_64 host
- i386 guest on mips host
- ppc guest on mips host
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 25 Jan 2011 10:55:14 +0000 (11:55 +0100)]
virtio-net: fix cross-endianness support
virtio-net used to work on cross-endianness configurations, but doesn't
anymore with recent guest kernels, as the new features don't handle
endianness correctly.
This patch fixes wrong conversion, and add missing ones to make
virtio-net working. Tested on the following configurations:
- i386 guest on x86_64 host
- ppc guest on x86_64 host
- i386 guest on mips host
- ppc guest on mips host
Cc: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 27 Jan 2011 07:21:35 +0000 (08:21 +0100)]
escc: fix interrupt flags
Recent PowerPC kernel end up in kernel panic during boot in -nographic
mode. In this mode the second serial port is used as the udbg console,
and thus a few characters are sent on this port. This activates the
tx interrupt flag, and later choke the Linux kernel, as it was not
expecting such a flag to be set.
The problem here comes from the fact that contrary to most devices the
interrupt flags are only set if the interrupt is enabled. Quoting the
datasheet: "If the corresponding IE bit is not set, the IP for that
source of interrupt will never be set."
This patch fixes that by enabling the interrupt flag only when the
corresponding interrupt is enabled.
Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
PCI_BRIDGE_CTL_DISCARD_STATUS (bit 10 in bridge control register)
is W1C so we should not make it writeable, otherwise the assert(!(wmask
& w1cmask)) in pci_default_write_config() is hit
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reported-by: Isaku Yamahata <yamahata@valinux.co.jp> Tested-by: Isaku Yamahata <yamahata@valinux.co.jp>
Christophe Lyon [Wed, 19 Jan 2011 16:10:52 +0000 (17:10 +0100)]
Support saturation with shift=0.
This patch fixes corner-case saturations, when the target range is
zero. It merely removes the guard against (sh == 0), and makes:
__ssat(0x87654321, 1) return 0xffffffff and set the saturation flag
__usat(0x87654321, 0) return 0 and set the saturation flag
Gerd Hoffmann [Mon, 24 Jan 2011 21:07:45 +0000 (22:07 +0100)]
pulseaudio: setup buffer attrs
Request reasonable buffer sizes from pulseaudio. Without this
pa_simple_write() can block quite long and lead to dropouts,
especially with guests which use small audio ring buffers.
Gerd Hoffmann [Mon, 24 Jan 2011 21:07:44 +0000 (22:07 +0100)]
pulseaudio: process 1/4 buffer max at once
Limit the size of data pieces processed by the pulseaudio worker
threads. Never ever process more than 1/4 of the buffer at once.
Background: The buffer area currently processed by the pulseaudio thread
is blocked, i.e. the main thread (or iothread) can't fill in more data
there. The buffer processing time is roughly real-time due to the
pa_simple_write() call blocking when the output queue to the pulse
server is full. Thus processing big chunks at once means blocking
a large part of the buffer for a long time. This brings high latency
and can lead to dropouts.
When processing the buffer in smaller chunks the rpos handling becomes a
problem though. The thread reads hw->rpos without knowing whenever
qpa_run_out has already seen the last (small) chunk processed and
updated rpos accordingly. There is no point in reading hw->rpos though,
pa->rpos can be used instead. We just need to take care to initialize
pa->rpos before kicking the thread.
Fabien Chouteau [Mon, 24 Jan 2011 11:56:55 +0000 (12:56 +0100)]
SPARC: Emulation of Leon3
Leon3 is an open-source VHDL System-On-Chip, well known in space industry (more
information on http://www.gaisler.com).
Leon3 is made of multiple components available in the GrLib VHDL library.
Three devices are implemented: uart, timers and IRQ manager.
You can find code for these peripherals in the grlib_* files.
Signed-off-by: Fabien Chouteau <chouteau@adacore.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fabien Chouteau [Mon, 24 Jan 2011 11:56:53 +0000 (12:56 +0100)]
SPARC: Emulation of GRLIB IRQMP
This device exposes two parameters:
- set_pil_in (ptr) : A function to set the pil_in of the SPARC CPU
- set_pil_in_opaque (ptr) : Opaque argument of the set_pil_in function
Emulation of GrLib devices is base on the GRLIB IP Core User's Manual:
http://www.gaisler.com/products/grlib/grip.pdf
Signed-off-by: Fabien Chouteau <chouteau@adacore.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fabien Chouteau [Mon, 24 Jan 2011 11:56:52 +0000 (12:56 +0100)]
SPARC: Emulation of GRLIB GPTimer
This device exposes three parameters:
- frequency (uint32) : The system frequency
- irq-line (uint32) : IRQ line number for the first timer
(others use irq-line + 1, irq-line + 2...)
- nr-timers (uint32) : Number of timers
Emulation of GrLib devices is base on the GRLIB IP Core User's Manual:
http://www.gaisler.com/products/grlib/grip.pdf
Signed-off-by: Fabien Chouteau <chouteau@adacore.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Stefan Hajnoczi [Mon, 24 Jan 2011 15:35:00 +0000 (15:35 +0000)]
usb-msd: Propagate removable bit to SCSI device
USB Mass Storage Devices sometimes have the RMB (removable) bit set in
the SCSI INQUIRY response. Thumbdrives tend to have the bit set whereas
hard disks do not.
Operating systems differentiate between removable devices and fixed
devices. Under Linux, the anaconda installer looks for removable
devices. Under Windows, only fixed devices may have more than one
partition and AutoRun is also affected by the removable bit.
For these reasons, allow USB Mass Storage Devices to override the
removable bit:
Stefan Hajnoczi [Mon, 24 Jan 2011 15:34:58 +0000 (15:34 +0000)]
scsi-disk: Allow overriding SCSI INQUIRY removable bit
Provide the "removable" qdev property bit to override the SCSI INQUIRY
removable (RMB) bit for non-CDROM devices. This will be used by USB
Mass Storage Devices, which sometimes have this guest-visible bit set
and sometimes do not. They therefore requires a means for user
configuration.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Blue Swirl [Sun, 23 Jan 2011 08:48:41 +0000 (08:48 +0000)]
usb-bus: use snprintf
Avoid this warning from OpenBSD linker:
LINK i386-softmmu/qemu
../usb-bus.o(.text+0x27c): In function `usb_get_fw_dev_path':
/src/qemu/hw/usb-bus.c:294: warning: sprintf() is often misused,
please use snprintf()
Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Gerd Hoffmann [Fri, 10 Dec 2010 13:20:46 +0000 (14:20 +0100)]
usb core: add migration support
Yes, seriously. There is no migration support at all for usb devices.
They loose state, especially the device address, and stop responding
because of that. Oops.
Luckily there is so much broken usb hardware out there that the guest
usually just kicks the device hard (via port reset and
reinitialization), then continues without a hitch. So we got away with
that in a surprising high number of cases.
The arrival of remote wakeup (which enables autosuspend support) changes
that picture though. The usb devices also forget that it they are
supposed to wakeup, so they don't do that. The host also doesn't notice
the device stopped working in case it suspended the device and thus
expects it waking up instead of polling it. Result is that your mouse
is dead.
Lets start fixing that. Add a vmstate struct for USBDevice.
Gerd Hoffmann [Fri, 14 Jan 2011 09:56:54 +0000 (10:56 +0100)]
vnc: fix numlock+capslock tracking
This patch makes the numlock+capslock tracking logic only look at
keydown events. Without this patch the vnc server will insert
bogous capslock keypress in case it sees the following key sequence:
shift down --- 'A' down --- shift up --- 'A' up
^ here
It doesn't hurt with a PS/2 keyboard, but it disturbs the USB Keyboard.
And with the key event queue just added to the usb keyboard the guest
will actually notice.
Gerd Hoffmann [Thu, 13 Jan 2011 16:42:06 +0000 (17:42 +0100)]
usb keyboard: add event event queue
This patch adds a event queue to the usb keyboard. This makes sure the
guest will see all key events even if they come in bursts. With this
patch applied sending Ctrl-Alt-Del using vncviewer's F8 menu works.
Also with autosuspend enabled the first keypress on a suspended keyboard
takes a little longer to be delivered to the guest because the usb bus
must be resumed first. Without event queue this easily gets lost.
Paolo Bonzini [Wed, 12 Jan 2011 12:19:20 +0000 (13:19 +0100)]
add event queueing to USB HID
The polling nature of the USB HID device makes it very hard to double
click or drag while on a high-latency VNC connection. This patch,
based on work done in the Xen qemu-dm tree by Ian Jackson, fixes this
bug by adding an event queue to the device. The event queue associates
each movement with the correct button state, and remembers all button
presses and releases as well.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gerd Hoffman <kraxel@redhat.com>
Stefan Hajnoczi [Mon, 24 Jan 2011 09:32:20 +0000 (09:32 +0000)]
block: Use backing format driver during image creation
The backing format should be honored during image creation. For some
reason we currently use the image format to open the backing file. This
fails when the backing file has a different format than the image being
created. Keep the image and backing format drivers completely separate.
Also print the backing filename if there is an error opening the backing
file instead of the image filename.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
do_drive_del()'s code to clean up the pointer from a qdev using the
drive back to the drive needs to check whether such a device exists.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This makes the errors point to the error location, and fixes drive_add
to report errors in the monitor instead of stderr.
While there, tweak a few error messages for consistency.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: Fix error message for invalid -drive CHS
When cyls, heads or secs are out of range, the error message prints
buf, which points to the value of option "if". Bogus, may even be
null. Drop that.
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Pierre Riteau [Fri, 21 Jan 2011 11:42:30 +0000 (12:42 +0100)]
Fix block migration when the device size is not a multiple of 1 MB
b02bea3a85cc939f09aa674a3f1e4f36d418c007 added a check on the return
value of bdrv_write and aborts migration when it fails. However, if the
size of the block device to migrate is not a multiple of BLOCK_SIZE
(currently 1 MB), the last bdrv_write will fail with -EIO.
Fixed by calling bdrv_write with the correct size of the last block.
Signed-off-by: Pierre Riteau <Pierre.Riteau@irisa.fr> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Fri, 14 Jan 2011 14:55:38 +0000 (15:55 +0100)]
qcow2: Batch flushes for COW
qcow2 calls bdrv_flush() after performing COW in order to ensure that the
L2 table change is never written before the copy is safe on disk. Now that the
L2 table is cached, we can wait with flushing until we write out the next L2
table.
Alon Levy [Wed, 19 Jan 2011 08:49:50 +0000 (10:49 +0200)]
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.
Live migration from and to spice 0.4 qxl devices isn't going to work.
Rip out the bits which attempt to support that. Zap the subsection
logic which is obsolete now. Bumb the version to make a clean cut.
This should obviously go in before 0.14 is released.
Handle spice client migration, i.e. inform a spice client connected
about the new host and connection parameters, so it can move over the
connection automatically.
The monitor command has a not-yet used protocol argument simliar to
set_password and expire_password commands. This allows to add a simliar
feature to vnc in the future. Daniel Berrange plans to work on this.
Gerd Hoffmann [Mon, 13 Dec 2010 16:30:12 +0000 (17:30 +0100)]
add migration state change notifiers
This patch adds functions to register and unregister notifiers for
migration state changes and a function to query the migration state.
The notifier is called on every state change. Once after establishing a
new migration object (which is in active state then) and once when the
state changes from active to completed, canceled or error.
Kevin Wolf [Mon, 10 Jan 2011 16:15:10 +0000 (17:15 +0100)]
qcow2: Add QcowCache
This adds some new cache functions to qcow2 which can be used for caching
refcount blocks and L2 tables. When used with cache=writethrough they work
like the old caching code which is spread all over qcow2, so for this case we
have merely a cleanup.
The interesting case is with writeback caching (this includes cache=none) where
data isn't written to disk immediately but only kept in cache initially. This
leads to some form of metadata write batching which avoids the current "write
to refcount block, flush, write to L2 table" pattern for each single request
when a lot of cluster allocations happen. Instead, cache entries are only
written out if its required to maintain the right order. In the pure cluster
allocation case this means that all metadata updates for requests are done in
memory initially and on sync, first the refcount blocks are written to disk,
then fsync, then L2 tables.
This improves performance of scenarios with lots of cluster allocations
noticably (e.g. installation or after taking a snapshot).
projects / qemu.git / log