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72583084e3
Add constant flags to indicate how two devices will be mapped or if they are unsupported. upstream_bridge_distance() will now return the mapping type and the distance in a passed-by-reference argument. This helps annotate the code better, but the main reason is so we can use the information to store the required mapping method in an xarray. Link: https://lore.kernel.org/r/20190730163545.4915-4-logang@deltatee.com Link: https://lore.kernel.org/r/20190812173048.9186-4-logang@deltatee.com Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Christoph Hellwig <hch@lst.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.