From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Subject: Re: [PATCH v3] drm/i915/execlists: Reset CSB write
 pointer after reset
Date: Thu, 28 Jun 2018 13:15:07 +0100
Message-ID: <0bb7cdcd-3122-6a42-a90c-b7d98eb25d70@linux.intel.com>
References: <20180627210712.25428-6-chris@chris-wilson.co.uk>
 <20180628115908.31933-1-chris@chris-wilson.co.uk>
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 mga06.intel.com (mga06.intel.com [134.134.136.31])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 5F9966E1EC
 for <intel-gfx@lists.freedesktop.org>; Thu, 28 Jun 2018 12:15:10 +0000 (UTC)
In-Reply-To: <20180628115908.31933-1-chris@chris-wilson.co.uk>
Content-Language: en-GB
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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