From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Daniel <thomas.daniel@intel.com>
Subject: [PATCH 32/43] drm/i915/bdw: Avoid non-lite-restore
	preemptions
Date: Thu, 24 Jul 2014 17:04:40 +0100
Message-ID: <1406217891-8912-33-git-send-email-thomas.daniel@intel.com>
References: <1406217891-8912-1-git-send-email-thomas.daniel@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 mga03.intel.com (mga03.intel.com [143.182.124.21])
 by gabe.freedesktop.org (Postfix) with ESMTP id 46C8E6E724
 for <intel-gfx@lists.freedesktop.org>; Thu, 24 Jul 2014 09:05:25 -0700 (PDT)
In-Reply-To: <1406217891-8912-1-git-send-email-thomas.daniel@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
List-Id: intel-gfx@lists.freedesktop.org
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