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In the irq handler, we fill out 16 bytes differently on 32-bit and 64-bit platforms, and for 32-bit vs 64-bit cycle counters, which doesn't always correspond with the bitness of the platform. Whether or not you like this strangeness, it is a matter of fact. But it might not be a fact you well realized until now, because the code that loaded the irq info into 4 32-bit words was quite confusing. Instead, this commit makes everything explicit by having separate (compile-time) branches for 32-bit and 64-bit types. Cc: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.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.