Re: RFC: Implement hwpoison on free for soft offlining

[Andi Kleen]

Andi Kleen <andi@xxxxxxxxxxxxxx> writes:

> Here's a somewhat experimental patch to improve soft offlining
> in hwpoison, but allowing hwpoison on free for not directly
> freeable page types. It should work for nearly all
> left over page types that get eventually freed, so this makes
> soft offlining nearly universal. The only non handleable page
> types are now pages that never get freed.
>
> Drawback: It needs an additional page flag. Cannot set hwpoison
> directly because that would not be "soft" and cause errors.

Ping? Any comments on this patch?

Except for the page flag use I think it's nearly a no brainer. 
A lot of new soft hwpoison capability for very little additional code.

Has anyone a problem using up a 64bit page flag for that?

Thanks,

-Andi 
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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