Commit Graph

18753 Commits

Author SHA1 Message Date
Stefan Hajnoczi f345cfd019 qemu-iotests: add iotests Python module
Block layer tests that involve QMP commands rather than qemu-img or
qemu-io are not well-suited for shell scripting.  This patch adds a
Python module which allows tests to be written in Python instead.

The basic API is:

  VM          - class for launching and interacting with a VM
  QMPTestCase - abstract base class for tests that use QMP
  qemu_img()  - wrapper function for invoking qemu-img
  qemu_io()   - wrapper function for invoking qemu-io
  imgfmt      - the image format under test (e.g. qcow2, qed)
  test_dir    - scratch directory path for temporary files
  main()      - entry point for running tests

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 15:48:44 +01:00
Stefan Hajnoczi 049255b60c qemu-iotests: export TEST_DIR for non-bash tests
Since qemu-iotests may need to create large image files it is possible
to specify the test directory.  The TEST_DIR variable needs to be
exported so non-bash tests can make use of it.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 15:48:44 +01:00
Jeff Cody c186402c44 QMP: Add qmp command for blockdev-group-snapshot-sync
This adds the QMP command for blockdev-group-snapshot-sync. It
takes an array in as the input, for the argument devlist.  The
array consists of the following elements:

    + device:        device to snapshot. e.g. "ide-hd0", "virtio0"
    + snapshot-file: path & file for the snapshot image. e.g. "/tmp/file.img"
    + format:        snapshot format. e.g., "qcow2". Optional

There is no HMP equivalent for the command.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 15:48:39 +01:00
Jeff Cody 8802d1fdd4 qapi: Introduce blockdev-group-snapshot-sync command
This is a QAPI/QMP only command to take a snapshot of a group of
devices. This is similar to the blockdev-snapshot-sync command, except
blockdev-group-snapshot-sync accepts a list devices, filenames, and
formats.

It is attempted to keep the snapshot of the group atomic; if the
creation or open of any of the new snapshots fails, then all of
the new snapshots are abandoned, and the name of the snapshot image
that failed is returned.  The failure case should not interrupt
any operations.

Rather than use bdrv_close() along with a subsequent bdrv_open() to
perform the pivot, the original image is never closed and the new
image is placed 'in front' of the original image via manipulation
of the BlockDriverState fields.  Thus, once the new snapshot image
has been successfully created, there are no more failure points
before pivoting to the new snapshot.

This allows the group of disks to remain consistent with each other,
even across snapshot failures.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 15:48:33 +01:00
Kevin Wolf 64ca6aee4f qcow2: Reject too large header extensions
Image files that make qemu-img info read several gigabytes into the
unknown header extensions list are bad. Just fail opening the image
if an extension claims to be larger than the header extension area.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-02-29 12:48:47 +01:00
Kevin Wolf fd29b4bbef qcow2: Fix offset in qcow2_read_extensions
The spec says that the length of extensions is padded to 8 bytes, not
the offset. Currently this is the same because the header size is a
multiple of 8, so this is only about compatibility with future changes
to the header size.

While touching it, move the calculation to a common place instead of
duplicating it for each header extension type.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-02-29 12:48:47 +01:00
Paolo Bonzini b6a127a156 block: drop aio_multiwrite in BlockDriver
These were never used.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:47 +01:00
Paolo Bonzini 56116a1469 block: remove unused fields in BlockDriverState
sync_aiocb is unused since commit ce1a14d (Dynamically allocate AIO
Completion Blocks., 2006-08-07).

private is unused since commit 56a1493 (drive cleanup fixes., 2009-09-25).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:47 +01:00
Kevin Wolf 423477e556 qcow2: Fix build with DEBUG_EXT enabled
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:47 +01:00
Paolo Bonzini d53cdb307a ide: fail I/O to empty disk
Requesting a read or a write operation on an empty disk can lead
to QEMU dumping core.

Also fix a few braces here and there.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau a2df5fa324 fdc: DIR (Digital Input Register) should return status of current drive...
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau b072a3c85d fdc: fix seek command, which shouldn't check tracks
The seek command just sends step pulses to the drive and doesn't care if
there is a medium inserted of if it is banging the head against the drive.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau 844f65d661 fdc: check if media rate is correct before doing any transfer
The programmed rate has to be the same as the required rate for the
floppy format ; if that's not the case, the transfer should abort.
This check can be disabled by using the 'check_media_rate' property.

Save media rate value only if media rate check is enabled.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau 09c6d5850f fdc: add a 'check media rate' property. Not used yet
Set it to true for current Qemu versions, and false for previous ones

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau f8d3d12857 block: add a transfer rate for floppy types
Floppies must be read at a specific transfer rate, depending of its own format.
Update floppy description table to include required transfer rate.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau a758f8f415 fdc: add CCR (Configuration Control Register) write register
DIR and CCR registers share the same address ; DIR is read-only
while CCR is write-only

CCR register is used to change media transfer rate, which will be
checked in following changes.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau 8510854ee7 fdc: handle read-only floppies (abort early on write commands)
A real floppy doesn't attempt to write to read-only media either.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau a005186c17 fdc: most control commands do not generate interrupts
In fact, only three control commands generate an interrupt:
read_id, recalibrate and seek

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau 1457a75843 fdc: set busy bit when starting a command
This bit must be active while a command is currently executed.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Hervé Poussineau 08388273a3 fdc: take side count into account
Floppies can be simple or double-sided. However, current code
was only taking the common case into account (ie 2 sides).

This repairs single-sided floppies, which where totally broken
before this patch : for track > 0, wrong sector number was
calculated, and data was read/written at wrong place on
underlying device.

Fortunately, only some 360 kB floppies are single-sided, so
this bug was probably not seen much.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-02-29 12:48:46 +01:00
Anthony Liguori b55c952aea Merge remote-tracking branch 'aneesh/for-upstream' into staging
* aneesh/for-upstream:
  hw/9pfs: Endian fixes for virtfs
  ./configure: add option for disabling VirtFS
2012-02-27 11:19:27 -06:00
David Gibson 90d7416ab1 slirp: Fix assertion failure on rejected DHCP requests
The guest network stack might DHCPREQUEST an address that the slirp built
in dhcp server can't let it have - for example if the guest has an old
leases file from another network configuration.  In this case the dhcp
server should and does reject the request and prepares to send a DHCPNAK
to the client.

However, in this case the daddr variable in bootp_reply() is set to
0.0.0.0.  Shortly afterwards, it unconditionally attempts to pre-insert the
new client address into the ARP table.  This causes an assertion failure in
arp_address_add() because of the 0.0.0.0 address.

According to RFC2131, DHCPNAK messages for clients on the same subnet
must be sent to the broadcast address (S3.2, subpoint 2).

Cc: Jan Kiszka <jan.kiszka@siemens.com>

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-27 14:55:07 +01:00
Jan Kiszka b87ffa1631 slirp: Refactor if_start
Replace gotos with a while loop, fix coding style.

CC: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
CC: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-27 14:54:49 +01:00
Jan Kiszka b248ede2ef slirp: Fix requeuing of batchq packets in if_start
In case we requeued a packet that was the head of a longer session
queue, we failed to restore this ordering. Also, we did not properly
deal with changes to Slirp::next_m.

Instead of a cumbersome roll back, this fix simply avoids any changes
until we know if the packet was actually sent. Both fixes crashes due
to inconsistent queues and simplifies the logic.

Thanks to Zhi Yong Wu who found the reason for these crashes.

CC: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
CC: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-27 14:54:49 +01:00
Jan Kiszka 79e7e937bd slirp: Clean up ifs_init
Remove duplicate ifs_init macros, reimplement the logic as static inline
in mbuf.h.

CC: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
CC: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-27 14:54:49 +01:00
Stefan Weil b4bd0b168e audio: Add some fall through comments
Static code analysers expect these comments for case statements without
a break statement.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: malc <av1474@comtv.ru>
2012-02-25 18:16:11 +04:00
Peter Maydell cdf84806a1 configure: Check whether makecontext() is a glibc stub function
On some systems (notably ARM Linux) glibc provides implementations
of makecontext(), getcontext() and friends which are stubs which
always return failure. Make the configure test for makecontext()
also check for the presence of the __stub_makecontext macro which
indicates the presence of these stubs, so we can avoid trying to use
them and fall back to a different coroutine implementation instead.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:06 -06:00
Peter Maydell 967c0da73a vl.c: Avoid segfault when started with no arguments
Fix a bug (introduced in commit a0abe47) where a command line which
specified no machine arguments (either explicitly or implicitly via
-kernel &co) would result in a segfault because of a NULL pointer
returned from qemu_opts_find(qemu_find_opts("machine"), 0).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:06 -06:00
Gerd Hoffmann 9ebe95fb60 nic: zap obsolote romloading bits from ne2k + pcnet
These days one just needs to specify the romfile in PCiDeviceInfo and
everything magically works.  It also allows to disable pxe rom loading
via "romfile=<emptystring>" like it is possible for all other nics.

[ v2: rebased & adapted to qom changes ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:05 -06:00
Gerd Hoffmann 5bc62e01cd build: allow turning off debuginfo
This patch adds --{enable,disable}-debug-info switches to configure
which allows to include/exclude the '-g' switch on the gcc & ld
command lines.  Not building debug info reduces ressource usage
(especially disk) alot and is quite useful for test builds.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:05 -06:00
Gerd Hoffmann 45efb16124 optimize screendump for the common non-switch case
switch console only if needed, also pass down whenever the console was
switched or not because a displaysurface redraw is only needed in case
the console was switched.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:05 -06:00
Gerd Hoffmann 1673510204 Remove screendump dummy functions.
The code in console.c verifies whenever a screen_dump function
pointer is present before calling it, so there is no need to supply an
dummy function.  Remove them.  Also report an error to notify the user
that he didn't got a screenshot.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:04 -06:00
Gerd Hoffmann 9a51f5b067 vga: simplify screendump
The displaychangelistener isn't needed at all, we can simply save the
image when vga_hw_update is done instead of hooking into the update
process.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:04 -06:00
Gerd Hoffmann 53370b78ec suspend: add qmp events
Send qmp events on suspend and wakeup so libvirt
has a chance to track the vm state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:04 -06:00
Gerd Hoffmann 6595abc044 suspend: make acpi timer wakeup the guest.
Make the acpi timer wake up the guest.
Guests can enable/disable this via acpi too.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:04 -06:00
Gerd Hoffmann 62aeb0f765 suspend: make rtc alarm wakeup the guest.
Make the rtc wake up the guest when the alarm fires.
Add acpi windup to property support RTC_EN, so guests
can enable and disable this.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:03 -06:00
Gerd Hoffmann 9826fd597d suspend: make serial ports wakeup the guest.
Add a 'wakeup' property to the serial port.  It is off by default.  When
enabled any incoming character on the serial line will wake up the
guest.  Useful for guests which have a serial console configured.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:03 -06:00
Gerd Hoffmann fd214d1828 suspend: make ps/2 devices wakeup the guest
This patch adds wakeup support to ps/2 emulation.  Any key press on the
ps/2 keyboard will wakeup the guest.  Likewise any mouse button press
will wakeup the guest.  Mouse moves are ignored, so the guest will not
wakeup in case your mouse crosses the vnc window of a suspended guest by
accident.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:03 -06:00
Gerd Hoffmann 9b9df25a47 suspend: add system_wakeup monitor command
This patch adds the system_wakeup monitor command which will simply
wake up suspended guests.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:03 -06:00
Gerd Hoffmann da98c8eb4c suspend: switch acpi s3 to new infrastructure.
This patch switches pc s3 suspend over to the new infrastructure.
The cmos_s3 qemu_irq is killed, the new notifier is used instead.
The xen hack goes away with that too, the hypercall can simply be
done in a notifier function now.

This patch also makes the guest actually stay suspended instead
of leaving suspend instantly, so it is useful for more than just
testing whenever the suspend/resume cycle actually works.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:03 -06:00
Gerd Hoffmann 95b363b5c6 suspend: add infrastructure
This patch adds some infrastructure to handle suspend and resume to
qemu.  First there are two functions to switch state and second there
is a suspend notifier:

 * qemu_system_suspend_request is supposed to be called when the
   guest asks for being be suspended, for example via ACPI.

 * qemu_system_wakeup_request is supposed to be called on events
   which should wake up the guest.

 * qemu_register_suspend_notifier can be used to register a notifier
   which will be called when the guest is suspended.  Machine types
   and device models can hook in there to modify state if needed.

 * qemu_register_wakeup_notifier can be used to register a notifier
   which will be called when the guest is woken up.  Machine types
   and device models can hook in there to modify state if needed.

 * qemu_system_wakeup_enable can be used to enable/disable wakeup
   events.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:02 -06:00
Gerd Hoffmann 8283c4f565 acpi: add acpi_pm1_evt_write_en
Do APCIREGS->pm1.evt.en updates using the new acpi_pm1_evt_write_en
function, so the acpi code will see those updates.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:02 -06:00
Gerd Hoffmann 2886be1b01 acpi: don't pass overflow_time to acpi_pm1_evt_get_sts
Pretty pointless, can easily be reached via ACPIREGS now.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:02 -06:00
Gerd Hoffmann 355bf2e5ba acpi: add ACPIREGS
All those acpi structs are not independent from each other.
Various acpi functions expecting multiple acpi structs passed
in are a clean indicator for that ;)

So this patch bundles all acpi structs in the new ACPIREGS
struct, then use it everythere pass around acpi state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:02 -06:00
Gerd Hoffmann 067866d61c acpi: move around structs
Group all structs at the top of hw/acpi.h.
Just moving around lines, no code changes.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-24 13:36:02 -06:00
Anthony Liguori 85f3855303 Merge remote-tracking branch 'stefanha/trivial-patches' into staging
* stefanha/trivial-patches:
  slirp/misc: fix gcc __warn_memset_zero_len warnings
  vl.c: Increase width of machine name column in "-M ?" output
  tcg: Remove unneeded include statements
2012-02-24 09:51:24 -06:00
Anthony Liguori 18ac549958 Merge remote-tracking branch 'mdroth/qga-win32-pull-2-23-12' into staging
* mdroth/qga-win32-pull-2-23-12:
  qemu-ga: add win32 guest-shutdown command
  qemu-ga: add Windows service integration
  qemu-ga: add initial win32 support
  qemu-ga: fixes for win32 build of qemu-ga
  qemu-ga: rename guest-agent-commands.c -> commands-posix.c
  qemu-ga: separate out common commands from posix-specific ones
  qemu-ga: move channel/transport functionality into wrapper class
  qemu-ga: Add schema documentation for types
2012-02-24 09:50:37 -06:00
Anthony Liguori 7c1daf341f Merge remote-tracking branch 'qmp/queue/qmp' into staging
* qmp/queue/qmp:
  qmp: add DEVICE_TRAY_MOVED event
  ide: drop ide_tray_state_post_load()
  block: Don't call bdrv_eject() if the tray state didn't change
  block: bdrv_eject(): Make eject_flag a real bool
  block: Rename bdrv_mon_event() & BlockMonEventAction
2012-02-24 09:45:22 -06:00
Anthony Liguori 5105b6d88d Merge remote-tracking branch 'kwolf/for-anthony' into staging
* kwolf/for-anthony: (46 commits)
  qemu-iotests: common.config: Allow use of arbitrary qemu* paths
  qemu-iotests: check: print relevant path information
  qemu-iotests: test loading internal snapshots
  qemu-iotests: Update filter for default cluster size
  qemu-iotests: add qed support to 025 image resize test
  qemu-iotests: Update rbd support
  qemu-iotests: common.config: Fix no $TEST_DIR directory
  qemu-iotests: only run 016 for file and sheepdog protocols
  qemu-iotests: Use zero-based offsets for IO patterns
  qemu-iotests: add support for rbd and sheepdog protocols
  qemu-iotests: filter IMGFMT correctly in 019
  qemu-iotests: README: Fix spelling
  qemu-iotests: add support for qed format
  qemu-iotests: filter TEST_DIR correctly in 019
  qemu-iotests: fix 019 golden output
  qemu-iotests: update expected results after qemu-img changes
  qemu-iotests: add read/write from smaller backing image test
  qemu-iotests: add sub-cluster allocating write test for sparse image formats
  qemu-iotests: improve test for qemu-img convert with backing file
  qemu-iotests: consider more cases in parsing qemu-io output
  ...
2012-02-24 09:37:27 -06:00
Anthony Liguori 9ef1300b1b Merge remote-tracking branch 'bonzini/virtio-scsi' into staging
* bonzini/virtio-scsi:
  scsi-block: always use scsi_generic_ops for cache != none
  scsi: fix searching for an empty id
  scsi: fix wrong return for target INQUIRY
  virtio-scsi: add migration support
  virtio-scsi: process control queue requests
  virtio-scsi: add basic SCSI bus operation
  virtio-scsi: Add basic request processing infrastructure
  virtio-scsi: Add virtio-scsi stub device
  scsi-disk: add migration support
  scsi-generic: add migration support
  scsi: add SCSIDevice vmstate definitions
  scsi-disk: enable scatter/gather functionality
  scsi: add scatter/gather functionality
  scsi: pass residual amount to command_complete
  ahci: use new DMA helpers
  dma-helpers: add accounting wrappers
  dma-helpers: add dma_buf_read and dma_buf_write
  dma-helpers: make QEMUSGList target independent
2012-02-24 09:33:03 -06:00