[PATCH v2 0/6] iommu: Pass in old_domain pointer to attach_dev

From: Nicolin Chen <nicolinc@nvidia.com>
To: <joro@8bytes.org>, <jgg@nvidia.com>, <kevin.tian@intel.com>
Cc: <suravee.suthikulpanit@amd.com>, <will@kernel.org>,
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Subject: [PATCH v2 0/6] iommu: Pass in old_domain pointer to attach_dev
Date: Wed, 22 Oct 2025 19:21:03 -0700	[thread overview]
Message-ID: <cover.1761017765.git.nicolinc@nvidia.com> (raw)

Tidy the release_device callbacks in the drivers and switch to the core
managed release_domain.

This allows the core further to pass in the old domain pointer into the
attach_dev callbacks to reduce the use of iommu_get_domain_for_dev().

This is a preparatory series for new iommu_dev_reset APIs:
https://lore.kernel.org/all/cover.1756682135.git.nicolinc@nvidia.com/

This is on github:
https://github.com/nicolinc/iommufd/tree/iommu_attach_old_dom-v2

Changelog
v2
 * Add "Acked-by" from Marek
 * Add "Reviewed-by" from Jason
 * Fix build break in s390-iommu
v1
 https://lore.kernel.org/all/cover.1760312540.git.nicolinc@nvidia.com/

Jason Gunthorpe (1):
  iommu: Generic support for RMRs during device release

Nicolin Chen (5):
  iommu/arm-smmu-v3: Set release_domain to arm_smmu_blocked_domain
  iommu/exynos-iommu: Set release_domain to exynos_identity_domain
  iommu/amd: Set release_domain to blocked_domain
  iommu: Do not revert set_domain for the last gdev
  iommu: Pass in old domain to attach_dev callback functions

 include/linux/iommu.h                         |  3 +-
 arch/powerpc/kernel/iommu.c                   |  5 ++-
 drivers/iommu/amd/iommu.c                     | 21 +++------
 drivers/iommu/apple-dart.c                    |  9 ++--
 .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     |  5 ++-
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   | 31 ++++++-------
 drivers/iommu/arm/arm-smmu/arm-smmu.c         |  9 ++--
 drivers/iommu/arm/arm-smmu/qcom_iommu.c       | 11 ++---
 drivers/iommu/exynos-iommu.c                  | 11 ++---
 drivers/iommu/fsl_pamu_domain.c               | 12 ++---
 drivers/iommu/intel/iommu.c                   | 10 +++--
 drivers/iommu/intel/nested.c                  |  2 +-
 drivers/iommu/iommu.c                         | 44 +++++++++++++------
 drivers/iommu/iommufd/selftest.c              |  2 +-
 drivers/iommu/ipmmu-vmsa.c                    | 10 ++---
 drivers/iommu/msm_iommu.c                     | 11 ++---
 drivers/iommu/mtk_iommu.c                     |  8 ++--
 drivers/iommu/mtk_iommu_v1.c                  |  7 ++-
 drivers/iommu/omap-iommu.c                    | 12 ++---
 drivers/iommu/riscv/iommu.c                   |  9 ++--
 drivers/iommu/rockchip-iommu.c                | 20 ++++++---
 drivers/iommu/s390-iommu.c                    | 13 +++---
 drivers/iommu/sprd-iommu.c                    |  3 +-
 drivers/iommu/sun50i-iommu.c                  |  8 ++--
 drivers/iommu/tegra-smmu.c                    | 10 ++---
 drivers/iommu/virtio-iommu.c                  |  6 ++-
 26 files changed, 172 insertions(+), 120 deletions(-)

-- 
2.43.0