Re: [RFC PATCH v2 0/5] Reduce NUMA balance caused TLB-shootdowns in a VM

[John Hubbard]

On 8/16/23 02:49, David Hildenbrand wrote:
> But do 32bit architectures even care about NUMA hinting? If not, just 
> ignore them ...

Probably not!

...
> > So, do you mean that let kernel provide a per-VMA allow/disallow 
> > mechanism, and
> > it's up to the user space to choose between per-VMA and complex way or
> > global and simpler way?
>
> QEMU could do either way. The question would be if a per-vma settings 
> makes sense for NUMA hinting.

From our experience with compute on GPUs, a per-mm setting would suffice.
No need to go all the way to VMA granularity.


thanks,
--
John Hubbard
NVIDIA