From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Subject: Re: [PATCH v13 2/5] drm/i915: Introduce private PAT
	management
Date: Mon, 11 Sep 2017 11:59:45 +0300
Message-ID: <1505120385.4107.21.camel@linux.intel.com>
References: <1505103993-9009-1-git-send-email-zhi.a.wang@intel.com>
 <1505103993-9009-2-git-send-email-zhi.a.wang@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>
In-Reply-To: <1505103993-9009-2-git-send-email-zhi.a.wang@intel.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://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: <https://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: Zhi Wang <zhi.a.wang@intel.com>, intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>, Ben Widawsky <benjamin.widawsky@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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