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

["Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>]

>-----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 
happen?


>
> -- Keir
>
>
>

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