linux-kernel - Re: [PATCH v2 4/4] drm/panfrost: Handle non-aligned lock addresses

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Message-ID: <YSZcTbRglJWz67r/@maud>
Date:   Wed, 25 Aug 2021 11:05:49 -0400
From:   Alyssa Rosenzweig <alyssa@...labora.com>
To:     Steven Price <steven.price@....com>
Cc:     Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        dri-devel@...ts.freedesktop.org, Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] drm/panfrost: Handle non-aligned lock addresses

> > Horrifying, and not what I wanted to read my last day before 2 weeks of
> > leave. Let's drop this patch, hopefully by the time I'm back, your
> > friends in GPU can confirm that's a spec bug and not an actual
> > hardware/driver one...
> > 
> > Can you apply the other 3 patches in the mean time? Thanks :-)
> > 
> 
> Yeah, sure. I'll push the first 3 to drm-misc-next-fixes (should land in
> v5.15).
> 
> It's interesting that if my (new) reading of the spec is correct then
> kbase has been horribly broken in this respect forever. So clearly it
> can't be something that crops up very often. It would have been good if
> the spec could have included wording such as "naturally aligned" if
> that's what was intended.

Indeed. Fingers crossed this is a mix-up. Although the text you quoted
seems pretty clear unfortunately :|

> Enjoy your holiday!

Thanks!