On 12/18/2018 01:54 PM, Anshuman Khandual wrote: > This patch series enables HugeTLB migration support for all supported > huge page sizes at all levels including contiguous bit implementation. > Following HugeTLB migration support matrix has been enabled with this > patch series. All permutations have been tested except for the 16GB. > > CONT PTE PMD CONT PMD PUD > -------- --- -------- --- > 4K: 64K 2M 32M 1G > 16K: 2M 32M 1G > 64K: 2M 512M 16G > > First the series adds migration support for PUD based huge pages. It > then adds a platform specific hook to query an architecture if a > given huge page size is supported for migration while also providing > a default fallback option preserving the existing semantics which just > checks for (PMD|PUD|PGDIR)_SHIFT macros. The last two patches enables > HugeTLB migration on arm64 and subscribe to this new platform specific > hook by defining an override. > > The second patch differentiates between movability and migratability > aspects of huge pages and implements hugepage_movable_supported() which > can then be used during allocation to decide whether to place the huge > page in movable zone or not. > > This is just a resend for the previous version (V3) after the rebase > on current mainline kernel. Also added all the tags previous version > had received. > > Changes in V3: > > - Re-ordered patches 1 and 2 per Michal > - s/Movability/Migratability/ in unmap_and_move_huge_page() per Naoya > > Changes in V2: (https://lkml.org/lkml/2018/10/12/190) > > - Added a new patch which differentiates migratability and movability > of huge pages and implements hugepage_movable_supported() function > as suggested by Michal Hocko. > > Anshuman Khandual (5): > mm/hugetlb: Distinguish between migratability and movability > mm/hugetlb: Enable PUD level huge page migration > mm/hugetlb: Enable arch specific huge page size support for migration > arm64/mm: Enable HugeTLB migration > arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages > Hello Andrew, Just wondering if there are any updates on this series ? Is there something we need to improve or fix some where in this series for it to get merged. Please do let us know. Thank you. - Anshuman
