From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [RFC] drm/i915: Add sync framework support to
 execbuff IOCTL
Date: Mon, 6 Jul 2015 15:59:30 +0200
Message-ID: <20150706135930.GD2156@phenom.ffwll.local>
References: <1435835399-15732-1-git-send-email-John.C.Harrison@Intel.com>
 <20150702115427.GV21398@nuc-i3427.alporthouse.com>
 <55953644.7030502@Intel.com>
 <20150702132238.GY21398@nuc-i3427.alporthouse.com>
 <55955C10.5000306@Intel.com>
 <20150702155554.GE21398@nuc-i3427.alporthouse.com>
 <55966F4D.7000500@linux.intel.com>
 <20150706092958.GN2156@phenom.ffwll.local>
 <559A7B71.8030708@Intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mail-wg0-f51.google.com (mail-wg0-f51.google.com [74.125.82.51])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 8F1866E8A5
 for <Intel-GFX@lists.freedesktop.org>; Mon,  6 Jul 2015 06:56:44 -0700 (PDT)
Received: by wgck11 with SMTP id k11so141156449wgc.0
 for <Intel-GFX@lists.freedesktop.org>; Mon, 06 Jul 2015 06:56:43 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <559A7B71.8030708@Intel.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: John Harrison <John.C.Harrison@Intel.com>
Cc: Intel-GFX@Lists.FreeDesktop.Org
List-Id: intel-gfx@lists.freedesktop.org
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