[Intel-gfx] [PATCH 1/2] drm/i915: re-enable semaphores by default

[Keith Packard]

On Wed, 16 Nov 2011 21:56:37 +0100 (CET), "Nicolas Kalkhof" <nkalkhof at web.de> wrote:

> Not quite. On my i7 2620M (Lenovo T420) the gpu frequently hangs when
> decoding videos (vaapi) and running OpenGL apps/games at the same
> time. Disabling iommu makes my system relatively stable even with rc6
> enabled. I haven't played with the semaphores however.

So, if we disabled rc6 when iommu is enabled (dmar_disable = 0), we
should be in good shape then.

-- 
keith.packard at intel.com
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