From: Daniel Vetter <daniel@ffwll.ch>
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>
Subject: Re: [PATCH 1/2] drm: Add colouring to the range allocator
Date: Thu, 12 Jul 2012 14:15:34 +0200 [thread overview]
Message-ID: <20120712121534.GD5039@phenom.ffwll.local> (raw)
In-Reply-To: <1341915324-18896-1-git-send-email-chris@chris-wilson.co.uk>
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
next prev parent reply other threads:[~2012-07-12 12:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-09 11:34 [RFC] Set cache level ioctl Chris Wilson
2012-07-09 11:34 ` [PATCH 1/3] drm: Add colouring to the range allocator Chris Wilson
2012-07-10 9:21 ` Daniel Vetter
2012-07-10 9:29 ` Chris Wilson
2012-07-10 9:40 ` Daniel Vetter
2012-07-10 10:15 ` [PATCH 1/2] " Chris Wilson
2012-07-10 10:15 ` [PATCH 2/2] drm/i915: Segregate memory domains in the GTT using coloring Chris Wilson
2012-07-12 12:19 ` Daniel Vetter
2012-07-12 12:15 ` Daniel Vetter [this message]
2012-07-09 11:34 ` [PATCH 2/3] " Chris Wilson
2012-07-09 11:34 ` [PATCH 3/3] drm/i915: Export ability of changing cache levels to userspace Chris Wilson
2012-07-10 8:54 ` Daniel Vetter
2012-07-10 9:00 ` Chris Wilson
2012-07-10 9:27 ` [PATCH] " Chris Wilson
2012-07-18 18:06 ` Daniel Vetter
2012-07-26 10:34 ` Daniel Vetter
2012-07-26 10:49 ` [PATCH] drm/i915: Segregate memory domains in the GTT using coloring Chris Wilson
2012-07-26 11:00 ` Daniel Vetter
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