From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Gordon <david.s.gordon@intel.com>
Subject: Re: [PATCH 1/2 v2] drm/i915: mark GEM object pages
 dirty when mapped & written by the CPU
Date: Thu, 10 Dec 2015 17:24:42 +0000
Message-ID: <5669B55A.3040704@intel.com>
References: <1449593478-33649-1-git-send-email-david.s.gordon@intel.com>
 <1449676372-6988-1-git-send-email-david.s.gordon@intel.com>
 <1449676372-6988-2-git-send-email-david.s.gordon@intel.com>
 <20151210132909.GM29974@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 mga14.intel.com (mga14.intel.com [192.55.52.115])
 by gabe.freedesktop.org (Postfix) with ESMTP id 5000A6EB56
 for <intel-gfx@lists.freedesktop.org>; Thu, 10 Dec 2015 09:25:22 -0800 (PST)
In-Reply-To: <20151210132909.GM29974@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: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org, Alex Dai <yu.dai@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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