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

Keith Packard
2011-05-04T17:30:24Z

[-- Attachment #1.1: Type: text/plain, Size: 492 bytes --]

On Thu, 14 Apr 2011 10:03:45 +0100, Chris Wilson <chris@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@intel.com

[-- Attachment #1.2: Type: application/pgp-signature, Size: 189 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org