From mboxrd@z Thu Jan  1 00:00:00 1970
From: Meng Xu <mengxu@seas.upenn.edu>
Subject: Re: Question about the general performance counter
	overflow interrupt handling
Date: Fri, 31 Mar 2017 11:46:18 -0400
Message-ID: <CAENZ-+n+Z9hJEEtFgreApKO1B715APT-VZG63T-TZ8HN6HAAaA@mail.gmail.com>
References: <CAENZ-+=b64dfbrTEW+K+Z7Z4OuYQ6i7st3Pm4E=jDCO2W8VdXg@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
Received: from mail6.bemta6.messagelabs.com ([193.109.254.103])
 by lists.xenproject.org with esmtp (Exim 4.84_2)
 (envelope-from <xumengpanda@gmail.com>) id 1ctykn-0002KF-3W
 for xen-devel@lists.xenproject.org; Fri, 31 Mar 2017 15:46:21 +0000
Received: by mail-qk0-f175.google.com with SMTP id r142so70350561qke.2
 for <xen-devel@lists.xenproject.org>; Fri, 31 Mar 2017 08:46:19 -0700 (PDT)
In-Reply-To: <CAENZ-+=b64dfbrTEW+K+Z7Z4OuYQ6i7st3Pm4E=jDCO2W8VdXg@mail.gmail.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: Jan Beulich <JBeulich@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: xuquan8@huawei.com
List-Id: xen-devel@lists.xenproject.org
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==