linux-kernel - Re: [PATCH] xen: privcmd: Add support for irqfd

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Message-ID: <b126f918-fcd7-dc45-5fa5-eea8309d1b60@epam.com>
Date:   Fri, 21 Jul 2023 17:17:20 +0000
From:   Oleksandr Tyshchenko <Oleksandr_Tyshchenko@...m.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Alex Bennée <alex.bennee@...aro.org>,
        "stratos-dev@...lists.linaro.org" <stratos-dev@...lists.linaro.org>,
        Erik Schilling <erik.schilling@...aro.org>,
        Manos Pitsidianakis <manos.pitsidianakis@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] xen: privcmd: Add support for irqfd



On 20.07.23 12:41, Viresh Kumar wrote:

Hello Viresh

> On 13-07-23, 14:40, Oleksandr Tyshchenko wrote:
>> Viresh, great work!
> 
> Thanks Oleksandr.
> 
>> Do you perhaps have corresponding users-space (virtio backend) example
>> adopted for that feature (I would like to take a look at it if possible)?
> 
> This is taken care by the xen-vhost-frontend Rust crate in our case
> (which was initially designed based on virtio-disk but has deviated a
> lot from it now). 

I see

Here is the commit of interest. The backends remain
> unmodified though.
> 
> https://urldefense.com/v3/__https://github.com/vireshk/xen-vhost-frontend/commit/d79c419f14c1f54240b3147c342894998c274364__;!!GF_29dbcQIUBPA!1yHRR11TbPB-cqHmbO9ew0W4GKPfx1y1GXWHj0Q7wIEcom3ZgU28uZcrXEYlnVPl1x47t3ooXECSYer2lClnO3QosqiOmFY$ [github[.]com]
> 
> And I have updated the commit with CONFIG_ARM64 thingy..

Thank you for the information!