From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Subject: Re: [PATCH 20/20] drm/i915: Early creation of relay
 channel for capturing boot time logs
Date: Fri, 12 Aug 2016 17:22:07 +0100
Message-ID: <57ADF7AF.5000803@linux.intel.com>
References: <1470983123-22127-1-git-send-email-akash.goel@intel.com>
 <1470983123-22127-21-git-send-email-akash.goel@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga11.intel.com (mga11.intel.com [192.55.52.93])
 by gabe.freedesktop.org (Postfix) with ESMTP id 3D7A16E302
 for <intel-gfx@lists.freedesktop.org>; Fri, 12 Aug 2016 16:22:09 +0000 (UTC)
In-Reply-To: <1470983123-22127-21-git-send-email-akash.goel@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: akash.goel@intel.com, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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