linux-kernel - [PATCH 0/7] iommu cleanup and refactoring

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Message-Id: <20220124071103.2097118-1-baolu.lu@linux.intel.com>
Date:   Mon, 24 Jan 2022 15:10:55 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>, Jason Gunthorpe <jgg@...dia.com>,
        Christoph Hellwig <hch@...radead.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>
Cc:     Alex Williamson <alex.williamson@...hat.com>,
        Eric Auger <eric.auger@...hat.com>,
        Liu Yi L <yi.l.liu@...el.com>,
        Jacob jun Pan <jacob.jun.pan@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH 0/7] iommu cleanup and refactoring

Hi,

The guest pasid and aux-domain related code are dead code in current
iommu subtree. As we have reached a consensus that all these features
should be based on the new iommufd framework (which is under active
development), the first part of this series removes and cleanups all
the dead code.

The second part of this series refactors the iommu_domain by moving all
domain-specific ops from iommu_ops to a new domain_ops. This makes an
iommu_domain self-contained and represent the abstraction of an I/O
translation table in the IOMMU subsystem. With different type of
iommu_domain providing different set of ops, it's easier to support more
types of I/O translation tables.

Please help to review and comment.

Best regards,
baolu

Lu Baolu (7):
  iommu/vt-d: Remove guest pasid related callbacks
  iommu: Remove guest pasid related interfaces and definitions
  iommu/vt-d: Remove aux-domain related callbacks
  iommu: Remove aux-domain related interfaces and iommu_ops
  drm/nouveau/device: Get right pgsize_bitmap of iommu_domain
  iommu: Use right way to retrieve iommu_ops
  iommu: Add iommu_domain::domain_ops

 include/linux/intel-iommu.h                   |  27 -
 include/linux/intel-svm.h                     |  12 -
 include/linux/iommu.h                         | 174 ++----
 drivers/iommu/intel/pasid.h                   |   4 -
 include/uapi/linux/iommu.h                    | 181 ------
 .../drm/nouveau/nvkm/engine/device/tegra.c    |   2 +-
 drivers/iommu/amd/iommu.c                     |  21 +-
 drivers/iommu/apple-dart.c                    |  24 +-
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   |  22 +-
 drivers/iommu/arm/arm-smmu/arm-smmu.c         |  23 +-
 drivers/iommu/arm/arm-smmu/qcom_iommu.c       |  17 +-
 drivers/iommu/exynos-iommu.c                  |  17 +-
 drivers/iommu/fsl_pamu_domain.c               |  13 +-
 drivers/iommu/intel/debugfs.c                 |   3 +-
 drivers/iommu/intel/iommu.c                   | 542 +-----------------
 drivers/iommu/intel/pasid.c                   | 161 ------
 drivers/iommu/intel/svm.c                     | 209 -------
 drivers/iommu/iommu.c                         | 296 +---------
 drivers/iommu/ipmmu-vmsa.c                    |  21 +-
 drivers/iommu/msm_iommu.c                     |  17 +-
 drivers/iommu/mtk_iommu.c                     |  24 +-
 drivers/iommu/mtk_iommu_v1.c                  |  19 +-
 drivers/iommu/omap-iommu.c                    |  15 +-
 drivers/iommu/rockchip-iommu.c                |  17 +-
 drivers/iommu/s390-iommu.c                    |  15 +-
 drivers/iommu/sprd-iommu.c                    |  19 +-
 drivers/iommu/sun50i-iommu.c                  |  18 +-
 drivers/iommu/tegra-gart.c                    |  15 +-
 drivers/iommu/tegra-smmu.c                    |  16 +-
 drivers/iommu/virtio-iommu.c                  |  18 +-
 30 files changed, 331 insertions(+), 1631 deletions(-)

-- 
2.25.1