From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Durrant <Paul.Durrant@citrix.com>
Subject: Re: [PATCH 2/2] x86/hvm/emulate: make sure rep I/O
 emulation does not cross GFN boundaries
Date: Fri, 10 Aug 2018 11:50:31 +0000
Message-ID: <60a36618d7584f1e87043f9d10c39c39@AMSPEX02CL03.citrite.net>
References: <20180810103714.5112-1-paul.durrant@citrix.com>
 <20180810103714.5112-3-paul.durrant@citrix.com>
 <b78aeadc-8bee-8809-134d-07559f00bb24@citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xenproject.org>
Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6])
 by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from
 <srs0=3eyy=kz=citrix.com=prvs=753083691=paul.durrant@srs-us1.protection.inumbo.net>)
 id 1fo5wA-0006yP-Mi
 for xen-devel@lists.xenproject.org; Fri, 10 Aug 2018 11:50:34 +0000
In-Reply-To: <b78aeadc-8bee-8809-134d-07559f00bb24@citrix.com>
Content-Language: en-US
List-Unsubscribe: <https://lists.xenproject.org/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xenproject.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xenproject.org>
List-Help: <mailto:xen-devel-request@lists.xenproject.org?subject=help>
List-Subscribe: <https://lists.xenproject.org/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xenproject.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xenproject.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xenproject.org>
To: Andrew Cooper <Andrew.Cooper3@citrix.com>, "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: Jan Beulich <jbeulich@suse.com>
List-Id: xen-devel@lists.xenproject.org
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