ea68573d40
Due to hardware bugs, scatter/gather display on raven requires a 1:1 IOMMU mapping, however, SME (System Memory Encryption) requires an indirect IOMMU mapping because the encryption bit is beyond the DMA mask of the chip. As such, the two are incompatible. Acked-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Christian König <christian.koenig@amd.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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 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.