[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Re: [patch 0/3]Enable CMCI (Corrected Machine Check Error Interrupt) for Intel CPUs
> > One thing -- if you want to reduce the window between release of a > band by its old owner and acquisition by a new owner, we could do the > whole lot before stop_machine_run()? Maybe cmci_cpu_down(cpu) which > would IPI 'cpu' to clear its CMCI state and then IPI all other CPUs > to pick up the released banks. This would be neatly hooked off > CPU_DOWN_PREPARE or similar in Linux, but Xen doesn't have cpu > notifiers. :-) You'd have to call cmci_cpu_down() explicitly in > cpu_down(). Or perhaps we should have cpu notifier chains in Xen > too... Hi, Keir When we wrote the patch, yunhong also mentioned similar thoughts, I will have some discussion with him tomorrow. Thanks a lot! Criping > > If we do the above I don't think we need to re-introduce your rollback > logic. If you think about it, there's no reason to prefer the old > owner over the new owner, so no reason to roll back. I believe? > > -- Keir > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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