From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?Q?Christian_K=c3=b6nig?= <deathsimple-ANTagKRnAhcb1SvskN2V4Q@public.gmane.org>
Subject: Re: [PATCH 1/2] drm: Implement vm_operations_struct.access
Date: Fri, 14 Jul 2017 12:06:55 +0200
Message-ID: <8b708b8e-cf4f-d553-811f-a7849fbf6eff@vodafone.de>
References: <1499980105-7721-1-git-send-email-Felix.Kuehling@amd.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
In-Reply-To: <1499980105-7721-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
Content-Language: en-US
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/amd-gfx>
List-Post: <mailto:amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/amd-gfx>,
 <mailto:amd-gfx-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "amd-gfx" <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: Felix Kuehling <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
List-Id: dri-devel@lists.freedesktop.org
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