From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [RFC] drm/i915: Render decompression support for
 Gen9 and above
Date: Wed, 09 Sep 2015 10:04:23 -0700
Message-ID: <55F06697.9060905@virtuousgeek.org>
References: <1441395770-31339-1-git-send-email-vandana.kannan@intel.com>
 <20150907163553.GE32505@phenom.ffwll.local>
 <55EF5C2C.3000908@virtuousgeek.org>
 <20150909152336.GR2767@phenom.ffwll.local>
 <55F04F36.1090605@virtuousgeek.org>
 <591D9F2F8137E144B6CDD649149EA82D1B32C80C@IRSMSX103.ger.corp.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 gproxy1-pub.mail.unifiedlayer.com
 (gproxy1-pub.mail.unifiedlayer.com [69.89.25.95])
 by gabe.freedesktop.org (Postfix) with SMTP id 9A1696E005
 for <intel-gfx@lists.freedesktop.org>; Wed,  9 Sep 2015 10:04:51 -0700 (PDT)
In-Reply-To: <591D9F2F8137E144B6CDD649149EA82D1B32C80C@IRSMSX103.ger.corp.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: "Smith, Gary K" <gary.k.smith@intel.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>, Thierry Reding <thierry.reding@avionic-desi.gn.de>
List-Id: intel-gfx@lists.freedesktop.org
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