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FRED can only be enabled in Long Mode. This is the 64bit mode (as opposed to compatibility mode) identifier, rather than being something hard-wired at 1. No functional change. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Xin Li (Intel) <xin@zytor.com> Reviewed-by: H. Peter Anvin (Intel) <hpa@zytor.com> Acked-by: H. Peter Anvin (Intel) <hpa@zytor.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 reStructuredText 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.