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root / hw / block / dataplane @ ef5bc962

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Makefile.objs 28 Bytes
ioq.c 2.8 kB
ioq.h 1.7 kB
virtio-blk.c 16.5 kB
virtio-blk.h 916 Bytes

Latest revisions

# Date Author Comment
8caf907f 09/06/2013 04:25 pm Cornelia Huck

dataplane: Fix startup race.

Avoid trying to setup dataplane again if dataplane setup is already in
progress. This may happen if an eventfd is triggered during setup.

I saw this occasionally with an experimental s390 irqfd implementation:

virtio_blk_handle_output...
ce689368 08/19/2013 04:52 pm Stefan Hajnoczi

dataplane/virtio-blk: drop flush_true() and flush_io()

.io_flush() is no longer called so drop flush_true() and flush_io().

Signed-off-by: Stefan Hajnoczi <>
f2e5dca4 08/19/2013 04:52 pm Stefan Hajnoczi

aio: drop io_flush argument

The .io_flush() handler no longer exists and has no users. Drop the
io_flush argument to aio_set_fd_handler() and related functions.

The AioFlushEventNotifierHandler and AioFlushHandler typedefs are no
longer used and are dropped too....
bf0da4df 08/19/2013 04:45 pm Stefan Hajnoczi

dataplane/virtio-blk: check exit conditions before aio_poll()

Check exit conditions before entering blocking aio_poll(). This is
mainly for consistency since it's unlikely that we are stopping in the
first event loop iteration.

Signed-off-by: Stefan Hajnoczi <>
b0f2027c 07/29/2013 06:19 pm Stefan Hajnoczi

dataplane: refuse to start if device is already in use

Dataplane must check whether a block device is in use before launching
the dataplane thread. This is necessary since the thread does not
synchronize with the main loop and I/O requests could cause corruption....
84db52d0 07/29/2013 06:19 pm Stefan Hajnoczi

dataplane: enable virtio-blk x-data-plane=on live migration

Although the dataplane thread does not cooperate with dirty memory
logging yet it's fairly easy to temporarily disable dataplane during
live migration. This way virtio-blk can live migrate when...
9154b02c 07/19/2013 07:29 am Stefan Hajnoczi

dataplane: sync virtio.c and vring.c virtqueue state

Load the virtio.c state into vring.c when we start dataplane mode and
vice versa when stopping dataplane mode. This patch makes it possible
to start and stop dataplane any time while the guest is running....
1c819449 04/24/2013 07:50 pm KONRAD Frederic

virtio: remove virtiobindings.

This remove virtio-bindings, and use class instead.

Signed-off-by: KONRAD Frederic <>
Message-id:
Signed-off-by: Anthony Liguori <>
6e790746 04/08/2013 07:13 pm Paolo Bonzini

hw: move virtio devices to hw/ subdirectories

Signed-off-by: Paolo Bonzini <>

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