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c6e5485e0c
swiotlb will only bounce buffer when the effective dma address for the device is smaller than the actual DMA range. Instead of flipping between the swiotlb and nommu ops for FSL SOCs that have the second outbound window just don't set the bus dma_mask in this case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Scott Wood <oss@buserror.net> |
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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.