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Re: [Qemu-devel] [PATCH v3] xen-disk: use an IOThread per instance

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH v3] xen-disk: use an IOThread per instance
Date: Wed, 8 Nov 2017 17:42:27 +0000
User-agent: Mutt/1.9.1 (2017-09-22)

On Tue, Nov 07, 2017 at 05:46:53AM -0500, Paul Durrant wrote:
> This patch allocates an IOThread object for each xen_disk instance and
> sets the AIO context appropriately on connect. This allows processing
> of I/O to proceed in parallel.
> The patch also adds tracepoints into xen_disk to make it possible to
> follow the state transtions of an instance in the log.

virtio-blk and virtio-scsi allow the user to specify an IOThread object.
This allows users to configure the device<->IOThread mapping any way
they like (e.g. 1:1, M:N).  Are you sure you want to hard-code the
IOThread mapping?

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