linux-kernel - Re: refactor the i915 GVT support and move to the modern mdev API v3

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Date:   Wed, 13 Apr 2022 18:58:47 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Christoph Hellwig <hch@....de>,
        "Wang, Zhi A" <zhi.a.wang@...el.com>
Cc:     Christoph Hellwig <hch@....de>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        "Vivi, Rodrigo" <rodrigo.vivi@...el.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        "intel-gvt-dev@...ts.freedesktop.org" 
        <intel-gvt-dev@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Alex Williamson <alex.williamson@...hat.com>
Subject: Re: refactor the i915 GVT support and move to the modern mdev API v3

On Wed, 13 Apr 2022, Christoph Hellwig <hch@....de> wrote:
> On Wed, Apr 13, 2022 at 01:47:05PM +0000, Wang, Zhi A wrote:
>> > the GVT code in the i915 is a bit of a mess right now due to strange
>> > abstractions and lots of indirect calls.  This series refactors various
>> > bits to clean that up.  The main user visible change is that almost all
>> > of the GVT code moves out of the main i915 driver and into the kvmgt
>> > module.
>> 
>> Hi Christoph:
>> 
>> Do you want me to merge the GVT-g patches in this series? Or you want them to get merged from your side?
>
> The two option here are drm tree via gvt and i915 trees or the vfio
> tree, neither of which really is my tree.
>
> We already have a fair bit of vfio changes at the tail end of the series,
> and Jason has some more that should sit on top of it, and I have some
> more that I haven't sent yet.
>
> So if we could get the MMIO table and Makefile cleanups into a topic
> branch that we could pull into the vfio tree and merge it through that
> that would seem easiest to me, assuming that is ok with the i915, drm
> and vfio maintainers.

AFAICS the changes are mostly to gvt/, and at least I'm fine with the
minor changes to i915 (in this series and in my two patches) being
merged via whichever tree you all see fit.

Acked-by: Jani Nikula <jani.nikula@...el.com>

Joonas, Tvrtko, Rodrigo, chime in now if you have any issues with that.


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center