From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [PATCH 1/2] drm: Add colouring to the range
	allocator
Date: Thu, 12 Jul 2012 14:15:34 +0200
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References: <20120710094014.GC5108@phenom.ffwll.local>
	<1341915324-18896-1-git-send-email-chris@chris-wilson.co.uk>
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To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Jerome Glisse <jglisse@redhat.com>, Ben Skeggs <bskeggs@redhat.com>, Daniel Vetter <daniel.vetter@ffwll.ch>, Alex Deucher <alexander.deucher@amd.com>
List-Id: intel-gfx@lists.freedesktop.org

On Tue, Jul 10, 2012 at 11:15:23AM +0100, Chris Wilson wrote:
> In order to support snoopable memory on non-LLC architectures (so that
> we can bind vgem objects into the i915 GATT for example), we have to
> avoid the prefetcher on the GPU from crossing memory domains and so
> prevent allocation of a snoopable PTE immediately following an uncached
> PTE. To do that, we need to extend the range allocator with support for
> tracking and segregating different node colours.
> 
> This will be used by i915 to segregate memory domains within the GTT.
> 
> v2: Now with more drm_mm helpers and less driver interference.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Dave Airlie <airlied@redhat.com
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Ben Skeggs <bskeggs@redhat.com>
> Cc: Jerome Glisse <jglisse@redhat.com>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: dri-devel@lists.freedesktop.org

Imo we should ditch the rather useless best_match and maybe also fold the
_range variants into the generic ones for most cases, but that's stuff for
other patches. So

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Cheers, Daniel
-- 
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48