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e339b51c13
In order to support v2 page table, IOMMU driver need to check if the hardware can support Guest Translation (GT) and Peripheral Page Request (PPR) features. Currently, IOMMU driver uses global (amd_iommu_v2_present) and per-iommu (struct amd_iommu.is_iommu_v2) variables to track the features. There variables area redundant since we could simply just check the global EFR mask. Therefore, replace it with a helper function with appropriate name. Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Co-developed-by: Vasant Hegde <vasant.hegde@amd.com> Signed-off-by: Vasant Hegde <vasant.hegde@amd.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Link: https://lore.kernel.org/r/20230921092147.5930-10-vasant.hegde@amd.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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| README | ||
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 Restructured Text 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.