RE: Re[2]: 3.4-rc smpboot: do_boot_cpu failed(-1) to wakeup CPU#1

[Brown, Len]

Donald, Shane,
Thanks for reporting this.

> > I also tried suggested /vmlinuz-4.3.0-rc3 parameter in grub:
> >  Â Â Â Â"cpu_init_udelay=10000"
> > which did not help getting missing CPU back online.

right, if the issue is caused by the patch below,
that cmdline will not help.

> Did you try reverting the "x86/smpboot: Remove APIC.wait_for_init_deassert
> and atomic init_deasserted"Â patch?

Yes, please let me know if reverting that patch helps you too.

You have similar hardware:

Shane:

smpboot: CPU0: Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz (fam: 06, model: 0f, stepping: 06)

Donald:

CPU : Intel Core 2 CPU 6600 @ 2.4GHz

I think I can get ahold of a core2 6xxx box tomorrow.
Please send me your .config directly, and I'll see if I can reproduce the issue.

thanks,
-Len

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