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Passing an array (swapper_pg_dir) as the argument to write_c0_kpgd() in setup_pw() will become problematic if we modify __write_64bit_c0_split() to cast its val argument to unsigned long long, because for 32-bit kernel builds the size of a pointer will differ from the size of an unsigned long long. This would fall foul of gcc's pointer-to-int-cast diagnostic. Cast the value to a long, which should be the same width as the pointer that we ultimately want & will be sign extended if required to the unsigned long long that __write_64bit_c0_split() ultimately needs. Signed-off-by: Paul Burton <paul.burton@mips.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.