Hi, This series enables memory failure handling for arm64. Previous posting can be found at [0] and [1].
Changelog v2 -> v3: * Added a new patch to update the perf accounting for fault handling (patch 3) * Added test and review tags v1 -> v2: * Reworked Patch 1 based on Catalin's feedbak to symmetrically deal with PUD and PMD hugepages in huge_pte_offset() * Added Steve's acks With support for contiguous hugepages being turned off[2], some of the problems arising from swap entries go away[3]. This simplifies the changes needed to enable memory corruption handling for arm64 (done in this seris). In this series, we updates huge_pte_offset() to correctly deal with swap entries (Patch 1). This function will need to be updated when contiguous hugepages are re-enabled. Patch 2 adds support to send SIGBUS to processes that have their memory corrupted. Patch 3 updates the perf accounting for memory faults to exclude hwpoison faults. With the prerequisites in place, enable memory corruption handling for arm64 (patch 4). Thanks, Punit [0] https://www.mail-archive.com/[email protected]/msg1376052.html [1] https://www.spinics.net/lists/arm-kernel/msg581657.html [1] https://lkml.org/lkml/2017/4/7/486 [2] https://lkml.org/lkml/2017/4/5/402 Jonathan (Zhixiong) Zhang (2): arm64: hwpoison: add VM_FAULT_HWPOISON[_LARGE] handling arm64: kconfig: allow support for memory failure handling Punit Agrawal (2): arm64: hugetlb: Fix huge_pte_offset to return poisoned page table entries arm64: mm: Update perf accounting to handle poison faults arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 2 +- arch/arm64/mm/fault.c | 90 ++++++++++++++++++++++++---------------- arch/arm64/mm/hugetlbpage.c | 29 +++++-------- 4 files changed, 67 insertions(+), 55 deletions(-) -- 2.11.0
