From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Some question to changeset 17962
Date: Tue, 10 Mar 2009 08:25:10 +0000
Message-ID: <C5DBD466.495F%keir.fraser@eu.citrix.com>
References: <E2263E4A5B2284449EEBD0AAB751098401C7D2ABB1@PDSMSX501.ccr.corp.intel.com>
Mime-Version: 1.0
Content-Type: text/plain;
	charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <E2263E4A5B2284449EEBD0AAB751098401C7D2ABB1@PDSMSX501.ccr.corp.intel.com>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: "Jiang, Yunhong" <yunhong.jiang@intel.com>, Brendan Cully <brendan@cs.ubc.ca>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
List-Id: xen-devel@lists.xenproject.org

On 10/03/2009 01:47, "Jiang, Yunhong" <yunhong.jiang@intel.com> wrote:

>> Agreed :)
> 
> Brendan/Keir, thanks for your clarification. I asked this because according
> discussion with Tim, we will utilize this feature for page offline also, that
> means multiple process will utilize this feature.
> I will create something in tools to achieve this.

Well hang on. Only one process can likely safely suspend and work on a guest
at a time. Unless you do some serialisation in the toolstack (probably xend)
then you're going to be racey aren't you? I don't think you need to
serialise in the hypervisor.

 -- Keir