[Intel-gfx] [PATCH 12/13] drm/i915: Prevent mixing of snooped and tiling modes for old chipsets

[Keith Packard]

On Thu, 14 Apr 2011 10:03:46 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:

> Older chipsets do not support snooping (i.e. cache sharing between the
> CPU and GPU) on tiled surfaces. So prevent userspace from being silly
> should we one day expose the ability to change cache levels from
> userspace.

We will not need this as there is no plan to have user-mode use snooped
access on older chipsets.

-- 
keith.packard at intel.com
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