Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v6

From: Andi Kleen
Date: Mon Oct 22 2012 - 12:59:32 EST

> Since PowerPC already allows 16GB page sizes, doesn't there need to be
> allowance for the possibility of future expansion? Choosing a larger
> minimum size (like 2^16) would allow that. Does the minimum size need
> to be 16k? (Surely, if you want a HUGEPAGE, you want a bigger page
> than that? I am not sure.)

Some architectures have configurable huge page sizes, so it depends on
the user. I thought 16K is reasonable. Can make it larger too.

But I personally consider even 16GB pages somewhat too big.

ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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