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From: Rob Herring <robh@kernel.org>
To: Steven Price <steven.price@arm.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	David Airlie <airlied@linux.ie>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Kukjin Kim <kgene@kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Sean Paul <sean@poorly.run>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>
Subject: Re: [PATCH v3 2/2] drm/panfrost: Use drm_gem_shmem_map_offset()
Date: Mon, 10 Jun 2019 09:38:50 -0600	[thread overview]
Message-ID: <CAL_Jsq+KpJHgyx017u78+D0HX03NNJuK=fYVES5J1dEpQroeEQ@mail.gmail.com> (raw)
In-Reply-To: <a4cd9ada-aaf1-3bd8-a138-f61308baf70c@arm.com>

On Wed, May 22, 2019 at 6:39 AM Steven Price <steven.price@arm.com> wrote:
>
> On 21/05/2019 19:23, Chris Wilson wrote:
> > Quoting Rob Herring (2019-05-21 16:24:27)
> >> On Mon, May 20, 2019 at 4:23 AM Steven Price <steven.price@arm.com> wrote:
> >>>
> >>
> >> You forgot to update the subject. I can fixup when applying, but I'd
> >> like an ack from Chris on patch 1.
>
> Sorry about that - I'll try to be more careful in the future.
>
> > I still think it is incorrect as the limitation is purely an issue with
> > the shmem backend and not a generic GEM limitation. It matters if you
>
> Do you prefer the previous version of this series[1] with the shmem helper?
>
> [1]
> https://lore.kernel.org/lkml/20190516141447.46839-1-steven.price@arm.com/
>
> Although this isn't a generic GEM limitation it's currently the same
> limitation that applies to the 'dumb' drivers as well as shmem backend,
> so I'd prefer not implementing two identical functions purely because
> this limitation could be removed in the future.

In interest of moving this forward, how about some comments in
drm_gem_map_offset() explaining the limitations and when it is
appropriate to use the function.

Rob

      reply	other threads:[~2019-06-10 15:39 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-20  9:23 [PATCH v3 0/2] drm/panfrost: drm_gem_map_offset() helper Steven Price
2019-05-20  9:23 ` [PATCH v3 1/2] drm/gem: Rename drm_gem_dumb_map_offset() to drm_gem_map_offset() Steven Price
2019-05-20  9:23 ` [PATCH v3 2/2] drm/panfrost: Use drm_gem_shmem_map_offset() Steven Price
2019-05-21 15:24   ` Rob Herring
2019-05-21 18:23     ` Chris Wilson
2019-05-22 12:39       ` Steven Price
2019-06-10 15:38         ` Rob Herring [this message]

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