From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon, 30 Dec 2013 12:16:15 +0000 (+0000)
Subject: drm/i915: Mention when we enable the Ironlake iommu workarounds
X-Git-Tag: v3.14-rc1~47^2~16^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0a7f818997f58b2c184a3ff313c170c411b88b4;p=pandora-kernel.git

drm/i915: Mention when we enable the Ironlake iommu workarounds

The iommu and gfx on Ironlake do not like each other and require a
big hammer to prevent hard machine hangs. In

commit 5c0422878fcdc279ae9a8e8b66972a15b5efb67f
Author: Ben Widawsky <ben@bwidawsk.net>
Date:   Mon Oct 17 15:51:55 2011 -0700

    drm/i915: ILK + VT-d workaround

we added the workaround, but never emitted any debug message that it was
active. Doing so should help identify known performance regressions.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

Reading git-diff-tree failed