From mboxrd@z Thu Jan  1 00:00:00 1970
From: ankitprasad.r.sharma@intel.com
Subject: [PATCH 3/5] drm/i915: Add support for stealing purgable
	stolen pages
Date: Wed, 29 Apr 2015 15:01:57 +0530
Message-ID: <1430299919-9865-4-git-send-email-ankitprasad.r.sharma@intel.com>
References: <1430299919-9865-1-git-send-email-ankitprasad.r.sharma@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 mga02.intel.com (mga02.intel.com [134.134.136.20])
 by gabe.freedesktop.org (Postfix) with ESMTP id 6DE7D7A006
 for <intel-gfx@lists.freedesktop.org>; Wed, 29 Apr 2015 02:45:54 -0700 (PDT)
In-Reply-To: <1430299919-9865-1-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: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chri@chris-wilson.co.uk>, akash.goel@intel.com, shashidhar.hiremath@intel.com
List-Id: intel-gfx@lists.freedesktop.org
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