Re: [Bug #13116] Can't boot with nosmp

[Avi Kivity]

Stephen Hemminger wrote:

 

> > This only affects reboots.  But yes, the cpumask code has bugs.  Does 
> > the .config involved select MAXSMP?
> >
> >     
>
> Patch does not fix the problem. Not sure if it is KVM only problem.
> Look like possible cpumask always equals what ACPI / SMP tables report.
> So currently looking into alloc_percpu which may not handle the possible
> but never used cpus.
>
>   

Right, it shouldn't have.

> It is x86-64 config and does not have MAXSMP set. It does have NR_CPUS set.
>   

So it's not cpumask.  Dare I suggest a bisect?

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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