Re: Thoughts on simple scanner approach for free page hinting

[David Hildenbrand]

On 09.04.19 15:31, Michael S. Tsirkin wrote:
> On Tue, Apr 09, 2019 at 11:20:36AM +0200, David Hildenbrand wrote:
>> BTW I like the idea of allocating pages that have already been hinted as
>> last "choice", allocating pages that have not been hinted yet first.
> 
> OK I guess but note this is just a small window during which
> not all pages have been hinted.

Yes, good point. It might sound desirable but might be completely
irrelevant in practice.

> 
> So if we actually think this has value then we need
> to design something that will desist and not drop pages
> in steady state too.

By dropping, you mean dropping hints of e.g. MAX_ORDER - 1 or e.g. not
reporting MAX_ORDER - 3?

-- 

Thanks,

David / dhildenb