From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Subject: Re: [PATCH 1/4] drm/i915: Clearing buffer objects via
 CPU/GTT
Date: Tue, 15 Sep 2015 15:00:52 +0100
Message-ID: <55F82494.9050308@linux.intel.com>
References: <1442306007-10792-1-git-send-email-ankitprasad.r.sharma@intel.com>
 <1442306007-10792-2-git-send-email-ankitprasad.r.sharma@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 mga03.intel.com (mga03.intel.com [134.134.136.65])
 by gabe.freedesktop.org (Postfix) with ESMTP id C33B76E978
 for <intel-gfx@lists.freedesktop.org>; Tue, 15 Sep 2015 07:00:56 -0700 (PDT)
In-Reply-To: <1442306007-10792-2-git-send-email-ankitprasad.r.sharma@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: ankitprasad.r.sharma@intel.com, intel-gfx@lists.freedesktop.org
Cc: akash.goel@intel.com, shashidhar.hiremath@intel.com
List-Id: intel-gfx@lists.freedesktop.org
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