This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


RE: [Xen-devel] Re: [PATCH 1/4] CPU online/offline support in Xen

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Christoph Egger <Christoph.Egger@xxxxxxx>
Subject: RE: [Xen-devel] Re: [PATCH 1/4] CPU online/offline support in Xen
From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Date: Thu, 18 Sep 2008 16:13:36 +0800
Accept-language: en-US
Acceptlanguage: en-US
Cc: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Shan, Haitao" <haitao.shan@xxxxxxxxx>, Gavin Maltby <Gavin.Maltby@xxxxxxx>, Haitao Shan <maillists.shan@xxxxxxxxx>
Delivery-date: Thu, 18 Sep 2008 01:14:02 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <C4F7BFE0.1D54F%keir.fraser@xxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <E2263E4A5B2284449EEBD0AAB751098401ABC4385F@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <C4F7BFE0.1D54F%keir.fraser@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AckYqfCMO5ppaQXoT/qQARCqfu4JZAAlReQAAAgCmh0AAD9SAA==
Thread-topic: [Xen-devel] Re: [PATCH 1/4] CPU online/offline support in Xen

>-----Original Message-----
>From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
>Sent: 2008年9月18日 15:21
>To: Jiang, Yunhong; Christoph Egger
>Cc: Jan Beulich; Gavin Maltby; Haitao Shan; Tian, Kevin;
>xen-devel@xxxxxxxxxxxxxxxxxxx; Shan, Haitao
>Subject: Re: [Xen-devel] Re: [PATCH 1/4] CPU online/offline
>support in Xen
>On 18/9/08 04:56, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote:
>>> It has since c/s 17968.
>> Hmm, I think current NMI_MCE_SOFTIRQ can't make sure other
>guest will not be
>> scheduled. Considering there is a schedule softirq already
>pending on the
>> pCPU, other guest may run before the impacted guest. Did I
>missed anything?
>There are races here in any case. What if #MC happens halfway
>through the
>scheduler, just before set_current(new)?

If MCE handler will not cause schedule and not change current, will any issue 

> -- Keir
Xen-devel mailing list