From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexandre Courbot <acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: [PATCH v3 15/15] secboot: safer zeroing of BL descriptors
Date: Wed, 2 Nov 2016 15:02:56 +0900
Message-ID: <20161102060256.14341-16-acourbot@nvidia.com>
References: <20161102060256.14341-1-acourbot@nvidia.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
In-Reply-To: <20161102060256.14341-1-acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/nouveau>,
 <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/nouveau>
List-Post: <mailto:nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
List-Help: <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/nouveau>,
 <mailto:nouveau-request-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org?subject=subscribe>
Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Sender: "Nouveau" <nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
To: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
List-Id: nouveau.vger.kernel.org
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