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Re: [Qemu-devel] [PATCH v2 15/18] xen: add a mechanism to automatically

From: Anthony PERARD
Subject: Re: [Qemu-devel] [PATCH v2 15/18] xen: add a mechanism to automatically create XenDevice-s...
Date: Fri, 7 Dec 2018 18:30:31 +0000
User-agent: Mutt/1.11.1 (2018-12-01)

On Thu, Dec 06, 2018 at 03:08:41PM +0000, Paul Durrant wrote:
> ...that maintains compatibility with existing Xen toolstacks.
> Xen toolstacks instantiate PV backends by simply writing information into
> xenstore and expecting a backend implementation to be watching for this.
> This patch adds a new 'xen-backend' module to allow individual XenDevice
> implementations to register a creator function to be called when a tool-
> stack instantiates a new backend in this way.
> To support this it is also necessary to add new watchers into the XenBus
> implementation to handle enumeration of new backends and also destruction
> of XenDevice-s when the toolstack sets the backend 'online' key to 0.
> NOTE: This patch only adds the framework. A subsequent patch will add a
>       creator function for xen-block devices.
> Signed-off-by: Paul Durrant <address@hidden>

Reviewed-by: Anthony PERARD <address@hidden>


Anthony PERARD

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