Hi, This patchset addresses all the known issues with contiguous hugetlb pages. Support for contiguous hugepages is useful on systems where the PMD hugepage size is too large (512MB hugepage when using 64k page granule) and contiguous hugepages can be used to provide reasonable hugepage sizes to the user. The patches can be split as * Patches 1-3, 9 cleanups and improvements * Patch 4 addresses the break-before-make requirement of the architecture for contiguous hugepages. These patches depend on enabling memory failure handling on arm64[2]. * Patch 5-7 add support for handling swap entries for contiguous pte hugepages. These patches depend on fixes to core code required to support contiguous hugepages[3]. * Patch 8 enables contiguous hugepage support for arm64 The patches are based on v4.12-rc2. Previous postings can be found at [0], [1]. All feedback welcome. Thanks, Punit [0] https://www.spinics.net/lists/arm-kernel/msg570422.html [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2017-March/497027.html [2] https://www.spinics.net/lists/arm-kernel/msg581657.html [3] https://www.spinics.net/lists/arm-kernel/msg583342.html Changes v3 -> v4 * Moved Patches 2 and 4 to [3] due to dependencies Changes v2 -> v3 * Rebased on v4.12-rc2 * Included swap related fixes in this series * Enable contiguous pte hugepages Changes v1 -> v2: * Marked patch 2 for stable * Fixed comment issues in patch 7 * Added tags Punit Agrawal (4): arm64: hugetlbpages: Handle swap entries in huge_pte_offset() for contiguous hugepages arm64: hugetlb: Override huge_pte_clear() to support contiguous hugepages arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages arm64: Re-enable support for contiguous hugepages Steve Capper (5): arm64: hugetlb: set_huge_pte_at Add WARN_ON on !pte_present arm64: hugetlb: Introduce pte_pgprot helper arm64: hugetlb: Spring clean huge pte accessors arm64: hugetlb: Add break-before-make logic for contiguous entries arm64: hugetlb: Cleanup setup_hugepagesz arch/arm64/include/asm/hugetlb.h | 9 +- arch/arm64/mm/hugetlbpage.c | 287 ++++++++++++++++++++++++++++----------- 2 files changed, 213 insertions(+), 83 deletions(-) -- 2.11.0 -- 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>
