[PATCH v2 0/9] iommu: Convert dart & iommufd to the new domain_alloc_paging()

jgg at ziepe.ca jgg at ziepe.ca
Thu Oct 26 02:58:32 AEDT 2023

On Wed, Sep 27, 2023 at 08:47:30PM -0300, Jason Gunthorpe wrote:
> Continue converting drivers to the new interface. Introduce
> ops->blocked_domain to hold the global static BLOCKED domain and convert
> all drivers supporting BLOCKED to use it.
> This makes it trivial for dart and iommufd to convert over to
> domain_alloc_paging().
> There are six drivers remaining:
> drivers/iommu/amd/iommu.c:      .domain_alloc = amd_iommu_domain_alloc,
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:    .domain_alloc           = arm_smmu_domain_alloc,
> drivers/iommu/arm/arm-smmu/arm-smmu.c:  .domain_alloc           = arm_smmu_domain_alloc,
> drivers/iommu/fsl_pamu_domain.c:        .domain_alloc   = fsl_pamu_domain_alloc,
> drivers/iommu/intel/iommu.c:    .domain_alloc           = intel_iommu_domain_alloc,
> drivers/iommu/virtio-iommu.c:   .domain_alloc           = viommu_domain_alloc,
> v2:
>  - Rebase to Joerg's for-next
>  - New patch to remove force_bypass, as discussed with Janne
>  - Move some hunks between patches to accommodate Robin's change to the
>    attach_dev switch
> v1: https://lore.kernel.org/r/0-v1-8060f06462cc+c0a39-dart_paging_jgg@nvidia.com
> Jason Gunthorpe (9):
>   iommu: Move IOMMU_DOMAIN_BLOCKED global statics to ops->blocked_domain
>   iommu/vt-d: Update the definition of the blocking domain
>   iommu/vt-d: Use ops->blocked_domain
>   iommufd: Convert to alloc_domain_paging()

Joerg can you grab these for this cycle please

>   iommu/dart: Use static global identity domains
>   iommu/dart: Move the blocked domain support to a global static
>   iommu/dart: Convert to domain_alloc_paging()
>   iommu/dart: Call apple_dart_finalize_domain() as part of
>     alloc_paging()
>   iommu/dart: Remove the force_bypass variable

I will poke more dart related people to get a tested-by, maybe next

The arm patches at least need this


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