From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [RFC 3/4] drm/i915: Interrupt driven fences
Date: Thu, 26 Mar 2015 10:27:25 -0700
Message-ID: <5514417D.7020206@virtuousgeek.org>
References: <1426873717-10176-1-git-send-email-John.C.Harrison@Intel.com>
 <1426873717-10176-4-git-send-email-John.C.Harrison@Intel.com>
 <20150320211135.GB16648@nuc-i3427.alporthouse.com>
 <20150323092253.GN1349@phenom.ffwll.local> <55100384.4080909@Intel.com>
 <20150326132257.GD24805@phenom.ffwll.local>
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 gproxy2-pub.mail.unifiedlayer.com
 (gproxy2-pub.mail.unifiedlayer.com [69.89.18.3])
 by gabe.freedesktop.org (Postfix) with SMTP id BBC776E0F1
 for <Intel-GFX@lists.freedesktop.org>; Thu, 26 Mar 2015 10:28:31 -0700 (PDT)
In-Reply-To: <20150326132257.GD24805@phenom.ffwll.local>
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: Daniel Vetter <daniel@ffwll.ch>, John Harrison <John.C.Harrison@Intel.com>
Cc: Intel-GFX@Lists.FreeDesktop.Org
List-Id: intel-gfx@lists.freedesktop.org
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