Re: [regression] 3.7 ends in APIC panic

[Ingo Molnar]

* Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx> wrote:

> On 12/16/2012 07:07 PM, Yinghai Lu wrote:
> >On Sun, Dec 16, 2012 at 10:01 AM, Bernd Schubert
> ><bernd.schubert@xxxxxxxxxxxxxxxxxx> wrote:
> >>>can you post your .config for v3.7 ?
> >>>
> >>>wonder if you have x2apic in .config
> >>
> >>Which setting is it? Config is attached.
> >
> >your config does not have
> >
> >CONFIG_X86_X2APIC=y
> >
> >set.
> >
> >please enable that.
> >
> >your BIOS pre-enable x2apic somehow, so you must have x2apic enabled in kernel.
> >
> >it x2apic really can not be re-enabled by kernel, kernel would disable
> >x2apic automatically.
> 
> The system boots fine with x2apic enabled.
> 
> Thanks a bunch for your help,

I suspect this needs to be fixed/improved: currently it's way 
too easy to disable x2apic support accidentally.

Thanks,

	Ingo
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