Hi Joerg, Here is a PR for a shared branch with Nicolin's series. I will be putting this in the iommufd tree right away and Alex will need it for vfio as well to progress this cycle. Please grab it to the iommu tree, thanks Jason The following changes since commit 30a0b95b1335e12efef89dd78518ed3e4a71a763: Linux 6.1-rc3 (2022-10-30 15:19:28 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd.git tags/for-joerg for you to fetch changes up to 04cee82e04d2aff3d177ef0021ecdff228daf7b8: iommu: Propagate return value in ->attach_dev callback functions (2022-11-01 14:39:59 -0300) ---------------------------------------------------------------- iommu: Define EINVAL as device/domain incompatibility This series is to replace the previous EMEDIUMTYPE patch in a VFIO series: https://lore.kernel.org/kvm/Yxnt9uQTmbqul5lf@xxxxxxxxxx/ The purpose is to regulate all existing ->attach_dev callback functions to use EINVAL exclusively for an incompatibility error between a device and a domain. This allows VFIO and IOMMUFD to detect such a soft error, and then try a different domain with the same device. Among all the patches, the first two are preparatory changes. And then one patch to update kdocs and another three patches for the enforcement effort. Link: https://lore.kernel.org/r/cover.1666042872.git.nicolinc@xxxxxxxxxx ---------------------------------------------------------------- Nicolin Chen (5): iommu/amd: Drop unnecessary checks in amd_iommu_attach_device() iommu: Add return value rules to attach_dev op and APIs iommu: Regulate EINVAL in ->attach_dev callback functions iommu: Use EINVAL for incompatible device/domain in ->attach_dev iommu: Propagate return value in ->attach_dev callback functions drivers/iommu/amd/iommu.c | 12 ++---------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 11 +---------- drivers/iommu/arm/arm-smmu/arm-smmu.c | 3 --- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 7 +------ drivers/iommu/fsl_pamu.c | 2 +- drivers/iommu/fsl_pamu_domain.c | 4 ++-- drivers/iommu/intel/iommu.c | 10 +++------- drivers/iommu/intel/pasid.c | 6 ++++-- drivers/iommu/iommu.c | 24 ++++++++++++++++++++++++ drivers/iommu/ipmmu-vmsa.c | 2 -- drivers/iommu/mtk_iommu.c | 4 ++-- drivers/iommu/omap-iommu.c | 6 +++--- drivers/iommu/sprd-iommu.c | 4 +--- drivers/iommu/tegra-gart.c | 2 +- drivers/iommu/virtio-iommu.c | 7 +++---- include/linux/iommu.h | 12 ++++++++++++ 16 files changed, 60 insertions(+), 56 deletions(-)
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