Re: [patch 13/14] x86_64: Use common functions in cluster and physflatmode

From: Zwane Mwaikambo
Date: Tue Sep 13 2005 - 09:47:04 EST


On Tue, 13 Sep 2005, Andi Kleen wrote:

> > We should probably remove the !HOTPLUG case and just use the mask version
> > for all cases <=8 CPUS, use physflat or the cluster mode for >8cpus as
> > the case may be, instead of defaulting to sequence_IPI which seems
> > a little overkill for the intended purpose.
>
> Or just always use physflat and remove the logical flat case?
> That seems cleanest to me. Any objections?

My objection is the number of APIC writes required to issue IPIs to a
group of processors, however i do understand that it would help
maintainability and testing coverage if we reduce the number of operating
modes, are you proposing physflat for _everything_ ?

Thanks,
Zwane

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