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The NVM Express Base Specification 2.0 specifies in the description of the CC – Controller Configuration register: "Host software shall set the Arbitration Mechanism Selected (CC.AMS), the Memory Page Size (CC.MPS), and the I/O Command Set Selected (CC.CSS) to valid values prior to enabling the controller by setting CC.EN to ‘1’. While we haven't seen any controller misbehaving while setting all bits in a single write, let's do it in the order that it is written in the spec, as there could potentially be controllers that are implemented to rely on the configuration bits being set before enabling the controller. Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Signed-off-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.