From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <igt-dev-bounces@lists.freedesktop.org>
Date: Mon, 18 Mar 2019 10:41:28 +0000
From: Liviu Dudau <Liviu.Dudau@arm.com>
Message-ID: <20190318104128.GH26454@e110455-lin.cambridge.arm.com>
References: <20190115174747.3138-1-liviu.dudau@arm.com>
 <20190115174747.3138-2-liviu.dudau@arm.com>
 <20190204133134.a6cpke3h6x53eeo3@DESKTOP-E1NTVVP.localdomain>
 <20190306213005.7hvbnwl7dohr3vuv@smtp.gmail.com>
MIME-Version: 1.0
Content-Disposition: inline
In-Reply-To: <20190306213005.7hvbnwl7dohr3vuv@smtp.gmail.com>
Subject: Re: [igt-dev] [PATCH i-g-t v5 1/6] lib/igt_kms: Add writeback
 support
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/igt-dev>,
 <mailto:igt-dev-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/igt-dev>
List-Post: <mailto:igt-dev@lists.freedesktop.org>
List-Help: <mailto:igt-dev-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/igt-dev>,
 <mailto:igt-dev-request@lists.freedesktop.org?subject=subscribe>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Errors-To: igt-dev-bounces@lists.freedesktop.org
Sender: "igt-dev" <igt-dev-bounces@lists.freedesktop.org>
To: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>, Petri Latvala <petri.latvala@intel.com>, Intel GFX ML <intel-gfx@lists.freedesktop.org>, IGT GPU Tools <igt-dev@lists.freedesktop.org>, Daniel Vetter <daniel@ffwll.ch>, nd <nd@arm.com>, Brian Starkey <Brian.Starkey@arm.com>
List-ID: <igt-dev@lists.freedesktop.org>
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