From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Subject: Re: [PATCH 4/5] drm/i915: Suppress context restore w/a
	when	using MI_RESTORE_INHIBIT
Date: Fri, 24 Feb 2017 12:45:54 +0200
Message-ID: <87a89bdfz1.fsf@gaia.fi.intel.com>
References: <20170223155757.10316-1-chris@chris-wilson.co.uk>
 <20170223155757.10316-4-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 mga04.intel.com (mga04.intel.com [192.55.52.120])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 2BA886EC07
 for <intel-gfx@lists.freedesktop.org>; Fri, 24 Feb 2017 10:47:10 +0000 (UTC)
In-Reply-To: <20170223155757.10316-4-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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