From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Gordon <david.s.gordon@intel.com>
Subject: Re: [PATCH 1/4] drm/i915: Unify execlist and legacy
 request life-cycles
Date: Wed, 14 Oct 2015 15:42:26 +0100
Message-ID: <561E69D2.7050900@intel.com>
References: <1444143124-16030-1-git-send-email-nicholas.hoath@intel.com>
 <1444143124-16030-2-git-send-email-nicholas.hoath@intel.com>
 <20151008123207.GQ27939@nuc-i3427.alporthouse.com>
 <20151009075851.GB26718@phenom.ffwll.local>
 <20151009083658.GE27939@nuc-i3427.alporthouse.com>
 <20151009091508.GP26718@phenom.ffwll.local>
 <20151009094535.GK27939@nuc-i3427.alporthouse.com>
 <20151009171821.GR26718@phenom.ffwll.local>
 <20151009172350.GF7517@nuc-i3427.alporthouse.com>
 <20151013112956.GL26718@phenom.ffwll.local>
 <20151013113641.GA16727@nuc-i3427.alporthouse.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga09.intel.com (mga09.intel.com [134.134.136.24])
 by gabe.freedesktop.org (Postfix) with ESMTP id 9C7216E3FB
 for <intel-gfx@lists.freedesktop.org>; Wed, 14 Oct 2015 07:42:28 -0700 (PDT)
In-Reply-To: <20151013113641.GA16727@nuc-i3427.alporthouse.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: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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