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 Nicolas Boichat (3): mm: When CONFIG_ZONE_DMA32 is set, use DMA32 for SLAB_CACHE_DMA include/linux/gfp.h: Add __get_dma32_pages macro iommu/io-pgtable-arm-v7s: Request DMA32 memory, and improve debugging drivers/iommu/io-pgtable-arm-v7s.c | 6 ++++-- include/linux/gfp.h | 2 ++ include/linux/slab.h | 13 ++++++++++++- mm/slab.c | 2 +- mm/slub.c | 2 +- 5 files changed, 20 insertions(+), 5 deletions(-) -- 2.19.1.930.g4563a0d9d0-goog
