From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCHv2 for-4.10] xen/arm: guest_walk: Fix check
	again the IPS
Date: Wed, 11 Oct 2017 15:57:10 +0100
Message-ID: <a0b6fab7-0e74-ff27-b5fb-4508dc1bff19@linaro.org>
References: <20171011142902.5332-1-julien.grall@linaro.org>
 <8e16d187-5434-76e5-0017-1c14175aa7c5@sec.in.tum.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <8e16d187-5434-76e5-0017-1c14175aa7c5@sec.in.tum.de>
Content-Language: en-US
List-Unsubscribe: <https://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <https://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xen.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org>
To: Sergej Proskurin <proskurin@sec.in.tum.de>, xen-devel@lists.xen.org
Cc: sstabellini@kernel.org
List-Id: xen-devel@lists.xenproject.org
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