Re: [RFC 4/4] drm: Add NVIDIA Tegra support |
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- Subject: Re: [RFC 4/4] drm: Add NVIDIA Tegra support
- From: Daniel Vetter <daniel@xxxxxxxx>
- Date: Wed, 11 Apr 2012 16:49:58 +0200
- Cc: Daniel Vetter <daniel@xxxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>, Stephen Warren <swarren@xxxxxxxxxxxxx>, Joerg Roedel <joerg.roedel@xxxxxxx>, devicetree-discuss@xxxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, Jon Mayo <jmayo@xxxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Colin Cross <ccross@xxxxxxxxxxx>, linux-tegra@xxxxxxxxxxxxxxx, Hiroshi Doyu <hdoyu@xxxxxxxxxx>
- In-reply-to: <20120411154309.1f04fb80@pyramind.ukuu.org.uk>
- User-agent: Mutt/1.5.21 (2010-09-15)
On Wed, Apr 11, 2012 at 03:43:09PM +0100, Alan Cox wrote:
> > 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....
Sorry, I really try to totally ignore everything related to gma500 ;-)
-Daniel
--
Daniel Vetter
Mail: daniel@xxxxxxxx
Mobile: +41 (0)79 365 57 48
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