Re: [PATCH] x86_64: remove never used nodenumer in pda

Mike Travis
2008-02-19T21:38:15Z

Andi Kleen wrote:

>> (And of course the problem with cpus on nodes with no local memory
>> needs to be resolved as well.)
>
> All CPUs get assigned to some node at boot.
>
> And there should be always per cpu variables or pda to use.

Sorry, I was being vague. Mel Gorman found a problem that appears
linked to the change to 16-bit apicids on an AMD box that has 4
nodes, but nodes 1-3 have no memory, and the system panics during
cpu_up() on the 2nd cpu which is on node 1.

I've not yet been able to replicate the problem.

Thanks,
Mike