From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Gordon <david.s.gordon@intel.com>
Subject: Re: [PATCH] drm/i915: RMW register cycles considered
 evil
Date: Mon, 06 Jul 2015 15:07:16 +0100
Message-ID: <559A8B94.1050701@intel.com>
References: <1436186522-7834-1-git-send-email-daniel.vetter@ffwll.ch>
 <20150706125049.GO5176@intel.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 mga14.intel.com (mga14.intel.com [192.55.52.115])
 by gabe.freedesktop.org (Postfix) with ESMTP id AD0ED6E8B9
 for <intel-gfx@lists.freedesktop.org>; Mon,  6 Jul 2015 07:07:18 -0700 (PDT)
In-Reply-To: <20150706125049.GO5176@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: =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>, Intel Graphics Development <intel-gfx@lists.freedesktop.org>
List-Id: intel-gfx@lists.freedesktop.org
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=