From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Subject: Re: [PATCH 1/2] drm/i915: Stop engines around GPU reset
 preparations
Date: Fri, 02 Mar 2018 13:50:32 +0200
Message-ID: <87fu5ir913.fsf@gaia.fi.intel.com>
References: <20180302113324.23189-1-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@lists.freedesktop.org>
Received: from mga17.intel.com (mga17.intel.com [192.55.52.151])
 by gabe.freedesktop.org (Postfix) with ESMTPS id EF9DE6EE31
 for <intel-gfx@lists.freedesktop.org>; Fri,  2 Mar 2018 11:55:07 +0000 (UTC)
In-Reply-To: <20180302113324.23189-1-chris@chris-wilson.co.uk>
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: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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