On 8/15/24 08:11, Jason Gunthorpe wrote:
> The iommu implementation is a single version of the iommu domain
> operations, iova_to_phys, map, unmap, read_and_clear_dirty and
> flushing. It is intended to be a near drop in replacement for existing
> iopt users.
>
> By using the Generic Page Table mechanism it is a single algorithmic
> implementation that operates all the different page table formats with
> consistent characteristics.
>
> Implement the basic starting point: alloc(), get_info() and deinit().
>
> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> ---
> drivers/iommu/generic_pt/fmt/iommu_template.h | 37 ++++
> drivers/iommu/generic_pt/iommu_pt.h | 166 ++++++++++++++++++
> include/linux/generic_pt/iommu.h | 87 +++++++++
> 3 files changed, 290 insertions(+)
> create mode 100644 drivers/iommu/generic_pt/fmt/iommu_template.h
> create mode 100644 drivers/iommu/generic_pt/iommu_pt.h
> create mode 100644 include/linux/generic_pt/iommu.h
>
...
> +EXPORT_SYMBOL_NS_GPL(pt_iommu_init, GENERIC_PT_IOMMU);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_IMPORT_NS(GENERIC_PT);
Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the
description is missing"), a module without a MODULE_DESCRIPTION() will
result in a warning when built with make W=1.
> +
> +#endif
