This is a follow-up to the discussion in [1], to make sure that the page tables allocated by iommu/io-pgtable-arm-v7s are contained within 32-bit physical address space. [1] https://lists.linuxfoundation.org/pipermail/iommu/2018-November/030876.html Fixes since v1: - Add support for SLAB_CACHE_DMA32 in slab and slub (patches 1/2) - iommu/io-pgtable-arm-v7s (patch 3): - Changed approach to use SLAB_CACHE_DMA32 added by the previous commit. - Use DMA or DMA32 depending on the architecture (DMA for arm, DMA32 for arm64). Nicolas Boichat (3): mm: slab/slub: Add check_slab_flags function to check for valid flags mm: Add support for SLAB_CACHE_DMA32 iommu/io-pgtable-arm-v7s: Request DMA32 memory, and improve debugging drivers/iommu/io-pgtable-arm-v7s.c | 20 ++++++++++++++++---- include/linux/slab.h | 2 ++ mm/internal.h | 21 +++++++++++++++++++-- mm/slab.c | 10 +++------- mm/slab.h | 3 ++- mm/slab_common.c | 2 +- mm/slub.c | 24 +++++++++++++++++------- 7 files changed, 60 insertions(+), 22 deletions(-) -- 2.19.1.930.g4563a0d9d0-goog
