From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
Subject: Re: [RFC 4/4] drm: Add NVIDIA Tegra support
Date: Wed, 11 Apr 2012 15:43:09 +0100
Message-ID: <20120411154309.1f04fb80@pyramind.ukuu.org.uk>
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To: Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>
Cc: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Colin Cross <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>, Jon Mayo <jmayo-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
List-Id: linux-tegra@vger.kernel.org

> Hm, in that case it looks like your iommu works more like the gtt on intel
> chips 

Don't overgeneralize there - on the GMA500/600 the GTT doesn't allow CPU
side access of the GTT map (ie you can't use it to linearise pages for
CPU view) and the 3600 is even stranger....

Alan