From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chao Gao <chao.gao@intel.com>
Subject: [PATCH v9 3/8] VMX: Properly handle pi when all the
	assigned devices are removed
Date: Mon, 27 Feb 2017 09:45:44 +0800
Message-ID: <1488159949-15011-4-git-send-email-chao.gao@intel.com>
References: <1488159949-15011-1-git-send-email-chao.gao@intel.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: <1488159949-15011-1-git-send-email-chao.gao@intel.com>
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: xen-devel@lists.xen.org
Cc: Kevin Tian <kevin.tian@intel.com>, Feng Wu <feng.wu@intel.com>, Jun Nakajima <jun.nakajima@intel.com>, George Dunlap <George.Dunlap@eu.citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Dario Faggioli <dario.faggioli@citrix.com>, Jan Beulich <jbeulich@suse.com>, Chao Gao <chao.gao@intel.com>
List-Id: xen-devel@lists.xenproject.org
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