santhosh <santh...@linux.vnet.ibm.com> writes: >> Michael Ellerman <m...@ellerman.id.au> writes: >> >>> On Fri, 2016-19-02 at 05:38:47 UTC, Rashmica Gupta wrote: >>>> Currently on PPC64 changing kernel pagesize from 4K to 64K leaves >>>> FORCE_MAX_ZONEORDER set to 13 - which produces a compile error. >>>> >>> ... >>>> So, update the range of FORCE_MAX_ZONEORDER from 9-64 to 8-9 for 64K pages >>>> and from 13-64 to 9-13 for 4K pages. >>> >>> https://git.kernel.org/powerpc/c/a7ee539584acf4a565b7439cea >>> >> HPAGE_PMD_ORDER is not something we should check w.r.t 4k linux page >> size. We do have the below constraint w.r.t hugetlb pages >> >> static inline bool hstate_is_gigantic(struct hstate *h) >> { >> return huge_page_order(h) >= MAX_ORDER; >> } >> >> That require MAX_ORDER to be greater than 12.
So have you tried that fix? cheers