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There's a selftest that checks FPRs aren't corrupted by preemption, or just process scheduling. However it only checks the non-volatile FPRs, meaning corruption of the volatile FPRs could go undetected. The check_fpu function it calls is used by several other tests, so for now add a new routine to check all the FPRs. Increase the size of the array of FPRs to 32, and initialise them all with random values. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231128132748.1990179-2-mpe@ellerman.id.au
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.