ValveSoftware/steamos_kernel — pull request #3 by courtney-lunarg (2014-06-28 01:23:29+00:00)
Title: Revert drm i915 Workaround of LLC incoherence

Back port this patch to fix performance issue. Help performance on XCOM and Witcher 2.

Revert drm i915 Workaround incoherence between fences and LLC across multiple CPUs
The workaround was obsoleted by a faster, better fix that uses 32 bit write instead of 64-bit writes.