Re: 1M hugepage size being registered on Linux

Benjamin Herrenschmidt [off-list ref] writes:

On Thu, 2017-06-22 at 13:59 +1000, Michael Ellerman wrote:

quoted

It's unsupported in Linux because it doesn't match the page table
geometry.
=20
We merged a patch from Aneesh to filter it out in 4.12-rc1:
=20
=C2=A0 a525108cf1cc ("powerpc/mm/hugetlb: Filter out hugepage size not s=

upported by page table layout")

quoted

=20
I guess we should probably send that patch to stable et. al.

It's also not supported in HW afaik, why is it there ?

Because hostboot said so AIUI.

cheers