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c5e8083f95
It was suggested [1] that we replace the old copy_from_iova() routine (which pins a page, does a memcpy, and unpins the page) with the newer vfio_dma_rw() interface. This has a modest improvement in the overall time spent through the fsm_io_request() path, and simplifies some of the code to boot. [1] https://lore.kernel.org/r/20220706170553.GK693670@nvidia.com/ Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.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.