On Thu, 3 Jun 2010, Pekka Enberg wrote:

quoted text
> On Tue, Jun 1, 2010 at 10:48 PM, Christoph Lameter
> <cl@linux-foundation.org> wrote:
> > On Tue, 1 Jun 2010, Randy Dunlap wrote:
> >
> >> > >>> My cpu is an I7 920, so it has 4 cores and there's hyperthreading
> >> > >>> enabled, so there are 8 logical cpus. Is this a bug?
> >
> > Yes its a bug in the arch code or BIOS. The system configuration tells us
> > that there are more possible cpus and therefore the system prepares for
> > the additional cpus to be activated at some later time.
>
> I guess we should CC x86 maintainers then!

Its also a know BIOS problem with Dell f.e. They often indicate more
potential cpus even if this particular hw configuration cannot do cpu
hotplug.
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