From: Stefan Hajnoczi <stefanha@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Ming Lei <ming.lei@canonical.com>, Kevin Wolf <kwolf@redhat.com>,
Fam Zheng <famz@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>
Subject: [Qemu-devel] [PATCH 0/9] virtio-blk: multiqueue support
Date: Fri, 20 May 2016 16:40:23 -0700 [thread overview]
Message-ID: <1463787632-7241-1-git-send-email-stefanha@redhat.com> (raw)
The virtio_blk guest driver has supported multiple virtqueues since Linux 3.17.
This patch series adds multiple virtqueues to QEMU's virtio-blk emulated
device.
Ming Lei sent patches previously but these were not merged. This series
implements virtio-blk multiqueue for QEMU from scratch since the codebase has
changed. Live migration support for s->rq was also missing from the previous
series and has been added.
It's important to note that QEMU's block layer does not support multiqueue yet.
Therefore virtio-blk device processes all virtqueues in the same AioContext
(IOThread). Further work is necessary to take advantage of multiqueue support
in QEMU's block layer once it becomes available.
I will post performance results once they are ready.
Stefan Hajnoczi (9):
virtio-blk: use batch notify in non-dataplane case
virtio-blk: tell dataplane which vq to notify
virtio-blk: associate request with a virtqueue
virtio-blk: add VirtIOBlockConf->num_queues
virtio-blk: multiqueue batch notify
vmstate: add VMSTATE_VARRAY_UINT32_ALLOC
virtio-blk: live migrate s->rq with multiqueue
virtio-blk: dataplane multiqueue support
virtio-blk: add num-queues device property
hw/block/dataplane/virtio-blk.c | 68 +++++++-------
hw/block/dataplane/virtio-blk.h | 2 +-
hw/block/virtio-blk.c | 200 ++++++++++++++++++++++++++++++++++++----
include/hw/virtio/virtio-blk.h | 13 ++-
include/migration/vmstate.h | 10 ++
5 files changed, 241 insertions(+), 52 deletions(-)
--
2.5.5
next reply other threads:[~2016-05-20 23:40 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-20 23:40 Stefan Hajnoczi [this message]
2016-05-20 23:40 ` [Qemu-devel] [PATCH 1/9] virtio-blk: use batch notify in non-dataplane case Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 2/9] virtio-blk: tell dataplane which vq to notify Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 3/9] virtio-blk: associate request with a virtqueue Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 4/9] virtio-blk: add VirtIOBlockConf->num_queues Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 5/9] virtio-blk: multiqueue batch notify Stefan Hajnoczi
2016-05-21 16:02 ` Paolo Bonzini
2016-05-27 21:38 ` Stefan Hajnoczi
2016-05-23 2:43 ` Fam Zheng
2016-05-23 8:17 ` Paolo Bonzini
2016-05-23 8:56 ` Fam Zheng
2016-05-20 23:40 ` [Qemu-devel] [PATCH 6/9] vmstate: add VMSTATE_VARRAY_UINT32_ALLOC Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 7/9] virtio-blk: live migrate s->rq with multiqueue Stefan Hajnoczi
2016-05-21 15:37 ` Paolo Bonzini
2016-05-27 21:42 ` Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 8/9] virtio-blk: dataplane multiqueue support Stefan Hajnoczi
2016-05-20 23:40 ` [Qemu-devel] [PATCH 9/9] virtio-blk: add num-queues device property Stefan Hajnoczi
2016-05-24 12:51 ` [Qemu-devel] [PATCH 0/9] virtio-blk: multiqueue support Christian Borntraeger
2016-05-27 21:44 ` Stefan Hajnoczi
2016-05-31 0:44 ` Stefan Hajnoczi
2016-05-27 11:55 ` [Qemu-devel] [RFC] virtio-blk: simple multithreaded MQ implementation for bdrv_raw Roman Pen
2016-05-27 22:27 ` Stefan Hajnoczi
2016-05-30 6:40 ` Alexandre DERUMIER
2016-05-30 12:14 ` Roman Penyaev
2016-05-30 11:59 ` Roman Penyaev
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