Re: [RFC][Patch v8 6/7] KVM: Enables the kernel to isolate and report free pages

[Michael S. Tsirkin]

On Fri, Feb 08, 2019 at 03:41:55PM -0500, Nitesh Narayan Lal wrote:
> >> I am also planning to try Michael's suggestion of using MAX_ORDER - 1.
> >> However I am still thinking about a workload which I can use to test its
> >> effectiveness.
> > You might want to look at doing something like min(MAX_ORDER - 1,
> > HUGETLB_PAGE_ORDER). I know for x86 a 2MB page is the upper limit for
> > THP which is the most likely to be used page size with the guest.
> Sure, thanks for the suggestion.

Given current hinting in balloon is MAX_ORDER I'd say
share code. If you feel a need to adjust down the road,
adjust both of them with actual testing showing gains.

-- 
MST