From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: [PATCH v8 03/10] xen/arm: inflight irqs during
	migration
Date: Thu, 24 Jul 2014 17:41:17 +0100
Message-ID: <1406220077.8706.13.camel@kazak.uk.xensource.com>
References: <alpine.DEB.2.02.1407101908280.29039@kaball.uk.xensource.com>
	<1405016003-19131-3-git-send-email-stefano.stabellini@eu.citrix.com>
	<1405601051.31127.9.camel@kazak.uk.xensource.com>
	<alpine.DEB.2.02.1407231513540.2293@kaball.uk.xensource.com>
	<1406129931.21827.24.camel@kazak.uk.xensource.com>
	<alpine.DEB.2.02.1407241235500.2293@kaball.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <alpine.DEB.2.02.1407241235500.2293@kaball.uk.xensource.com>
List-Unsubscribe: <http://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: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: julien.grall@citrix.com, xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org
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