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87e387acd8
OpenRISC GCC supports flags to enable the backend to output instructions if they are supported by a target processor. This patch adds configuration flags to enable configuring these flags to tune the kernel for a particular CPU configuration. In the future we could also enable all of these flags by default and provide instruction emulation in the kernel to make these choices easier for users but this is what we provide for now. Signed-off-by: Stafford Horne <shorne@gmail.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.