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9f81ca8d1f
Don't even try to initialize the AMD IOMMU hardware when amd_iommu=off has been passed on the kernel command line. References: https://bugzilla.kernel.org/show_bug.cgi?id=212133 References: https://bugzilla.suse.com/show_bug.cgi?id=1183132 Cc: stable@vger.kernel.org # v5.11 Signed-off-by: Joerg Roedel <jroedel@suse.de> Link: https://lore.kernel.org/r/20210317091037.31374-3-joro@8bytes.org Acked-by: Huang Rui <ray.huang@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.