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    Subject[PATCH v2 00/24] iommu: Refactor DMA domain strictness
    Date
    Hi all,

    Here's v2 where things start to look more realistic, hence the expanded
    CC list. The patches are now based on the current iommu/core branch to
    take John's iommu_set_dma_strict() cleanup into account.

    The series remiains in two (or possibly 3) logical parts - for people
    CC'd on cookie cleanup patches, the later parts should not affect you
    since your drivers don't implement non-strict mode anyway; the cleanup
    is all pretty straightforward, but please do yell at me if I've managed
    to let a silly mistake slip through and broken your driver.

    This time I have also build-tested x86 as well as arm64 :)

    Changes in v2:

    - Add iommu_is_dma_domain() helper to abstract flag check (and help
    avoid silly typos like the one in v1).
    - Tweak a few commit messages for spelling and (hopefully) clarity.
    - Move the iommu_create_device_direct_mappings() update to patch #14
    where it should have been.
    - Rewrite patch #20 as a conversion of the now-existing option.
    - Clean up the ops->flush_iotlb_all check which is also made redundant
    by the new domain type
    - Add patch #24, which is arguably tangential, but it was something I
    spotted during the rebase, so...

    Once again, the whole lot is available on a branch here:

    https://gitlab.arm.com/linux-arm/linux-rm/-/tree/iommu/fq

    Thanks,
    Robin.


    CC: Marek Szyprowski <m.szyprowski@samsung.com>
    CC: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
    CC: Geert Uytterhoeven <geert+renesas@glider.be>
    CC: Yong Wu <yong.wu@mediatek.com>
    CC: Heiko Stuebner <heiko@sntech.de>
    CC: Chunyan Zhang <chunyan.zhang@unisoc.com>
    CC: Chunyan Zhang <chunyan.zhang@unisoc.com>
    CC: Maxime Ripard <mripard@kernel.org>
    CC: Jean-Philippe Brucker <jean-philippe@linaro.org>

    Robin Murphy (24):
    iommu: Pull IOVA cookie management into the core
    iommu/amd: Drop IOVA cookie management
    iommu/arm-smmu: Drop IOVA cookie management
    iommu/vt-d: Drop IOVA cookie management
    iommu/exynos: Drop IOVA cookie management
    iommu/ipmmu-vmsa: Drop IOVA cookie management
    iommu/mtk: Drop IOVA cookie management
    iommu/rockchip: Drop IOVA cookie management
    iommu/sprd: Drop IOVA cookie management
    iommu/sun50i: Drop IOVA cookie management
    iommu/virtio: Drop IOVA cookie management
    iommu/dma: Unexport IOVA cookie management
    iommu/dma: Remove redundant "!dev" checks
    iommu: Introduce explicit type for non-strict DMA domains
    iommu/amd: Prepare for multiple DMA domain types
    iommu/arm-smmu: Prepare for multiple DMA domain types
    iommu/vt-d: Prepare for multiple DMA domain types
    iommu: Express DMA strictness via the domain type
    iommu: Expose DMA domain strictness via sysfs
    iommu: Merge strictness and domain type configs
    iommu/dma: Factor out flush queue init
    iommu: Allow enabling non-strict mode dynamically
    iommu/arm-smmu: Allow non-strict in pgtable_quirks interface
    iommu: Only log strictness for DMA domains

    .../ABI/testing/sysfs-kernel-iommu_groups | 2 +
    drivers/iommu/Kconfig | 80 +++++++++----------
    drivers/iommu/amd/iommu.c | 21 +----
    drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 25 ++++--
    drivers/iommu/arm/arm-smmu/arm-smmu.c | 29 ++++---
    drivers/iommu/arm/arm-smmu/qcom_iommu.c | 8 --
    drivers/iommu/dma-iommu.c | 44 +++++-----
    drivers/iommu/exynos-iommu.c | 18 +----
    drivers/iommu/intel/iommu.c | 23 ++----
    drivers/iommu/iommu.c | 53 +++++++-----
    drivers/iommu/ipmmu-vmsa.c | 27 +------
    drivers/iommu/mtk_iommu.c | 6 --
    drivers/iommu/rockchip-iommu.c | 11 +--
    drivers/iommu/sprd-iommu.c | 6 --
    drivers/iommu/sun50i-iommu.c | 12 +--
    drivers/iommu/virtio-iommu.c | 8 --
    include/linux/dma-iommu.h | 9 ++-
    include/linux/iommu.h | 15 +++-
    18 files changed, 171 insertions(+), 226 deletions(-)

    --
    2.25.1

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