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Date:   Thu, 24 Jun 2021 10:03:04 +0200
From:   Boris Brezillon <boris.brezillon@collabora.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Tomeu Vizoso <tomeu.vizoso@collabora.com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
        Steven Price <steven.price@arm.com>,
        Robin Murphy <robin.murphy@arm.com>
Cc:     dri-devel@lists.freedesktop.org, Icecream95 <ixn@keemail.me>,
        stable@vger.kernel.org
Subject: Re: [PATCH v2 01/12] drm/panfrost: Make sure MMU context lifetime
 is not bound to panfrost_priv
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        <20210621133907.1683899-2-boris.brezillon@collabora.com>
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On Mon, 21 Jun 2021 15:38:56 +0200
Boris Brezillon <boris.brezillon@collabora.com> wrote:

> Jobs can be in-flight when the file descriptor is closed (either because
> the process did not terminate properly, or because it didn't wait for
> all GPU jobs to be finished), and apparently panfrost_job_close() does
> not cancel already running jobs. Let's refcount the MMU context object
> so it's lifetime is no longer bound to the FD lifetime and running jobs
> can finish properly without generating spurious page faults.
> 
> Reported-by: Icecream95 <ixn@keemail.me>
> Fixes: 7282f7645d06 ("drm/panfrost: Implement per FD address spaces")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>

Queued this patch to drm-misc-next. I'll respin the rest of this series.