From: Ben Widawsky <ben@bwidawsk.net>
Date: Thu, 4 Jul 2013 18:02:06 +0000 (-0700)
Subject: drm/i915: Use eLLC/LLC by default when available
X-Git-Tag: v3.12-rc1~136^2~129^2~67
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d15c145a6234d999c0452eec0d275c1fbf0688c;p=pandora-kernel.git

drm/i915: Use eLLC/LLC by default when available

DRI clients really should be using MOCS to get fine grained streaming
cache controls. With that note, I *hope* that this patch doesn't improve
performance overwhelmingly, because if it does - it means there is a
problem elsewhere.

In any case, the kernel, and old userspace should get some benefit from
this, so let's do it. eLLC is always a good default, and really not
using it is the special case for MOCS.

References: http://www.intel.com/newsroom/kits/restricted/ha$well!/pdfs/4th_Gen_Intel_Core_PressBriefing_5-29.pdf (page 57)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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