f1ca70717b
Bit 1 of the IVFS IVInfo field indicates that IOMMU has been used for pre-boot DMA protection. Export this capability to allow other places in the kernel to be able to check for it on AMD systems. Link: https://www.amd.com/system/files/TechDocs/48882_IOMMU.pdf Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/ce7627fa1c596878ca6515dd9d4381a45b6ee38c.1650878781.git.robin.murphy@arm.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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.