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Nicolin Chen
3961f2f5da
To ease the for-driver iommufd APIs, get_viommu_size and viommu_init ops are introduced. Sanitize the inputs and report the size of struct arm_vsmmu on success, in arm_smmu_get_viommu_size(). Place the type sanity at the last, becase there will be soon an impl level get_viommu_size op, which will require the same sanity tests prior. It can simply insert a piece of code in front of the IOMMU_VIOMMU_TYPE_ARM_SMMUV3 sanity. The core will ensure the viommu_type is set to the core vIOMMU object, and pass in the same dev pointer, so arm_vsmmu_init() won't need to repeat the same sanity tests but to simply init the arm_vsmmu struct. Remove the arm_vsmmu_alloc, completing the replacement. Link: https://patch.msgid.link/r/64e4b4c33acd26e1bd676e077be80e00fb63f17c.1749882255.git.nicolinc@nvidia.com Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Pranjal Shrivastava <praan@google.com> Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.