Messages in this thread | | | Date | Tue, 5 Jun 2012 10:17:01 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait or nmi |
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On Mon, 4 Jun 2012, Arjan van de Ven wrote:
> > I disagree. Deactivating a cpu for power saving is halfway to hotplug > > anyway. I'd rather unify the two cases, where we can specify how dead a > > CPU should be, than have individual archs and boards do random hacks. > > well on PC's there really is no difference at least; > idle equals "all power removed" already there.
This doesn't sound right at all. Len Brown has often told us that on Intel chips, power can't be removed from a package until _all_ the cores in the package are idle.
Alan Stern
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