linux-kernel - Re: [PATCH v4 0/4] new subsystem for compute accelerator devices

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Message-ID: <CAPM=9ty_YHrM5QhAjgFvNdpkEwnB_WHsouhYG8m5XGrb+kmWAQ@mail.gmail.com>
Date:   Tue, 22 Nov 2022 15:46:25 +1000
From:   Dave Airlie <airlied@...il.com>
To:     Sonal Santan <sonal.santan@....com>
Cc:     Oded Gabbay <ogabbay@...nel.org>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Jeffrey Hugo <quic_jhugo@...cinc.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Arnd Bergmann <arnd@...db.de>, Jiho Chu <jiho.chu@...sung.com>,
        John Hubbard <jhubbard@...dia.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Christoph Hellwig <hch@...radead.org>,
        Christopher Friedt <chrisfriedt@...il.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Kevin Hilman <khilman@...libre.com>,
        Alex Deucher <alexander.deucher@....com>,
        Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>,
        Maciej Kwapulinski <maciej.kwapulinski@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH v4 0/4] new subsystem for compute accelerator devices

On Tue, 22 Nov 2022 at 09:06, Sonal Santan <sonal.santan@....com> wrote:
>
> On 11/19/22 12:44, Oded Gabbay wrote:
> > This is the fourth (and hopefully last) version of the patch-set to add the
> > new subsystem for compute accelerators. I removed the RFC headline as
> > I believe it is now ready for merging.
> >
> > Compare to v3, this patch-set contains one additional patch that adds
> > documentation regarding the accel subsystem. I hope it's good enough for
> > this stage. In addition, there were few very minor fixes according to
> > comments received on v3.
> >
> > The patches are in the following repo:
> > https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/accel.git/log/?h=accel_v4
> >
> > As in v3, The HEAD of that branch is a commit adding a dummy driver that
> > registers an accel device using the new framework. This can be served
> > as a simple reference.
> >
> > v1 cover letter:
> > https://lkml.org/lkml/2022/10/22/544
> >
> > v2 cover letter:
> > https://lore.kernel.org/lkml/20221102203405.1797491-1-ogabbay@kernel.org/T/
> >
> > v3 cover letter:
> > https://lore.kernel.org/lkml/20221106210225.2065371-1-ogabbay@kernel.org/T/
>
> Thanks for defining the new accel subsystem. We are currently working on
> DRM based drivers for unannounced acceleration devices. I am fine with
> these changes with the assumption that the choice of using classic DRM
> or accel is left up to the individual driver.

I don't think that decision should be up to any individual driver
author. It will have to be consensus with me/Daniel/Oded and the
driver authors.

Dave.