On Fri 19-08-16 19:08:51, Yisheng Xie wrote: > > > On 2016/8/19 18:25, Michal Hocko wrote: > > On Thu 18-08-16 20:05:29, Xie Yisheng wrote: > >> As we know, arm64 also support gigantic hugepage eg. 1G. > > > > Well, I do not know that. How can I check? > > > Hi Michal, > Thank you for your reply. > Maybe you can check the setup_hugepagesz() OK, I see. The support was added by 084bd29810a5 ("ARM64: mm: HugeTLB support.") in 3.11 but this got later broken. I suspect 944d9fec8d7a ("hugetlb: add support for gigantic page allocation at runtime") in 3.16 but this would require double checking. Information like this would be really helpful in the changelog... -- Michal Hocko SUSE Labs -- 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>