From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wilson <chris@chris-wilson.co.uk>
Subject: [PATCH 2/4] drm/i915: Update rules for reading cache
	lines through the LLC
Date: Tue,  6 Aug 2013 13:17:03 +0100
Message-ID: <1375791425-14978-2-git-send-email-chris@chris-wilson.co.uk>
References: <1375791425-14978-1-git-send-email-chris@chris-wilson.co.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org>
Received: from fireflyinternet.com (s16502780.onlinehome-server.info
	[87.106.93.118])
	by gabe.freedesktop.org (Postfix) with ESMTP id 28DDBE6DB2
	for <intel-gfx@lists.freedesktop.org>;
	Tue,  6 Aug 2013 05:17:24 -0700 (PDT)
In-Reply-To: <1375791425-14978-1-git-send-email-chris@chris-wilson.co.uk>
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>
Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org
Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org
To: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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