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Re: [Qemu-devel] [PATCH 5/9] virtio: add aio handler


From: Cornelia Huck
Subject: Re: [Qemu-devel] [PATCH 5/9] virtio: add aio handler
Date: Fri, 1 Apr 2016 16:04:20 +0200

On Fri,  1 Apr 2016 15:19:50 +0200
Paolo Bonzini <address@hidden> wrote:

> From: "Michael S. Tsirkin" <address@hidden>
> 
> In addition to handling IO in vcpu thread and
> in io thread, blk dataplane introduces yet another mode:
> handling it by aio.
> 
> This reuses the same handler as previous modes,
> which triggers races as these were not designed to be reentrant.
> 
> As a temporary fix, add a separate handler just for aio, this will make
> it possible to disable regular handlers when dataplane is active.
> 
> Signed-off-by: Michael S. Tsirkin <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
>  hw/virtio/virtio.c         | 36 ++++++++++++++++++++++++++++++++----
>  include/hw/virtio/virtio.h |  3 +++
>  2 files changed, 35 insertions(+), 4 deletions(-)

Reviewed-by: Cornelia Huck <address@hidden>




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