From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Widawsky <ben@bwidawsk.net>
Subject: Re: [PATCH 2/3] drm/i915: allow semaphores on SNB if
 DMAR is disabled
Date: Wed, 16 Nov 2011 16:56:45 -0800
Message-ID: <20111117005644.GB27398@bolo_yeung.jf.intel.com>
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To: Eugeni Dodonov <eugeni.dodonov@intel.com>
Cc: daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org
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On Wed, Nov 16, 2011 at 10:17:54PM -0200, Eugeni Dodonov wrote:
> Semaphores cause issues when DMAR is enabled. So if we are set to per-chip
> default, and we are on SNB, we can enable semaphores as long as SMAR is
> disabled.
> 
> Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>

See my response to patch 3...