Re: SMP is broken on sparc64 with kernel 4.x/5.x

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Hi John

On Fri, 9 Oct 2020 16:30:35 +0200
John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx> wrote:

> It mostly affects older machines, the newer machines such as T5220, T5240 and T5 that
> we have in Debian have no issues with the latest kernel versions.
> 
> We do have an UltraSPARC IIIi machine that we need to keep at 4.19 as the machine otherwise
> becomes unstable.

I have absolute no stability issues.
It's (in my opinion) pcpu-alloc:
kernel 4.x/5.x: pcpu-alloc: [0] 0 1 
kernel 3.x: pcpu-alloc: [0] 0 2 

Is it fixable? Or will it stay in state "broken" ?

Rüdiger




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