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SubjectRe: [RFC 00/15] x86_64: Optimize percpu accesses
Mike Travis <> writes:

> Btw, the "zero_based_only" patch (w/o the pda folded into the percpu
> area) gets to the point shown below. Dropping NR_CPUS from 4096 to 256
> clears up the error. So except for the "stack overflow" message I got
> yesterday, the result is the same. As soon as I get a chance, I'll try
> it out with gcc-4.2.0 to see if it changed the boot up problem.

Thanks that seems to confirm the suspicion that it the zero based percpu
segment that is causing problems.

In this case it appears that the notifier block for one of the cpu notifiers
got stomped, or never got initialized.


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