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Re: [Qemu-devel] [PATCH v2 0/4] virtio-blk: fix issues with unified virt


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH v2 0/4] virtio-blk: fix issues with unified virtio-blk request handling
Date: Tue, 8 Jul 2014 16:43:22 +0200

On Tue, Jul 1, 2014 at 5:25 PM, Stefan Hajnoczi <address@hidden> wrote:
> This series fixes issues recently introduced when unifying virtio-blk
> dataplane's request handling with non-dataplane virtio-blk.
>
> The problems include broken memory allocation for dataplane requests and a
> performance regression for non-dataplane.  See the patches for details.
>
> Stefan Hajnoczi (4):
>   virtio-blk: avoid dataplane VirtIOBlockReq early free
>   dataplane: do not free VirtQueueElement in vring_push()
>   virtio-blk: avoid g_slice_new0() for VirtIOBlockReq and
>     VirtQueueElement
>   virtio-blk: embed VirtQueueElement in VirtIOBlockReq
>
>  hw/block/dataplane/virtio-blk.c     | 30 +++++++++++-----------
>  hw/block/virtio-blk.c               | 50 
> ++++++++++++++++++-------------------
>  hw/virtio/dataplane/vring.c         | 22 ++++++----------
>  include/hw/virtio/dataplane/vring.h |  3 +--
>  include/hw/virtio/virtio-blk.h      |  6 ++++-
>  5 files changed, 53 insertions(+), 58 deletions(-)

Hi Kevin,
Please include this series in your block pull request.  I missed it
last week and it's needed to fix dataplane in QEMU 2.1.

Thanks,
Stefan



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