[Intel-gfx] [PATCH 11/13] drm/i915: Prevent mmap access through the GTT of snooped pages

[Keith Packard]

On Thu, 14 Apr 2011 10:03:45 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:

> The docs have a dire warning not to attempt to access snooped (the old
> style of cache sharing on pre-SandyBridge chipsets) pages through the GTT.
> Prevent userspace from doing so by sending them a SIGBUS if they try.

There is not plan for the user mode driver to use snooped access on
pre-SNB chipsets. So, the kernel should not try to support this in any
way.

-- 
keith.packard at intel.com
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