Re: [PATCH v3] mm/memory-failure: Support disabling soft offline for HugeTLB pages

[Michal Hocko]

On Wed 16-09-26 15:08:45, David Hildenbrand wrote:
> 
> > 
> > OK, so apparently there are some BIOSes which abuse this feature to
> > mimic a real HW poisoning. This doesn't change the overall picture
> > though
> 
> Is this really abusing? We know that a page is shaky and will likely go bad in
> the future, For now it is still accessible. Trying to migrate off that page stop
> using it right away sounds pretty logical to me.

Yes, no dispute on that. But we have HW poisoning for exactly that
purpose, no?

> Now, the weird thing is that for hugetlb we wants a different behavior (keep
> using the page and ignore the request to evacuate).

Exactly

-- 
Michal Hocko
SUSE Labs