With POWER SPAPR now having a real iommu driver and using the normal group lifecycle stuff fixing FSL will leave only VFIO's no-iommu support as a user for the iommu_group_add/remove_device() calls. This will help simplify the understanding of what the core code should be doing for these functions.
Fix FSL to not need to call iommu_group_remove_device() at all. v2: - Change the approach to use driver_managed_dma - Really simplify fsl_pamu_device_group() and just put everything in one function - New patch to make missing OF properties a probe failure v1: https://lore.kernel.org/r/0-v1-1421774b874b+167-ppc_device_group_...@nvidia.com Jason Gunthorpe (3): iommu/fsl: Always allocate a group for non-pci devices iommu/fsl: Move ENODEV to fsl_pamu_probe_device() iommu/fsl: Use driver_managed_dma to allow VFIO to work arch/powerpc/sysdev/fsl_pci.c | 1 + drivers/iommu/fsl_pamu_domain.c | 123 +++++++++----------------------- 2 files changed, 36 insertions(+), 88 deletions(-) base-commit: 1421774b874bfd5fd1b2b05b59b67c0c5e0d513e -- 2.40.1
