Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> writes: > On Thu, 2016-11-10 at 14:59 +0530, Aneesh Kumar K.V wrote: >> This help us to find the hugetlb page size which we need ot use on some >> archs like ppc64 for tlbflush. This also make the interface consistent >> with other hugetlb functions > > What about my requested simpler approach ? Still working on the changes. > > For normal (non-huge) pages, we already know the size. > > For huge pages, can't we encode in the top SW bits of the PTE the > page size that we obtain from set_pte_at ? > > That would be a lot less churn and avoid touching all these archs... > especially since the current DD1 workaround is horrible and I want > the fix to be backported, so something simpler and contained in > arch/powerpc feels more suitable. > My take as of now is even though the modification lines will be less, it is going to be much more difficult to follow and backport. I will try to do a patch to show the complexity and we can decide which approach is simpler. -aneesh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>