[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [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 happen? > > -- Keir > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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