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5b1cfe3a0b
Although SMP bringup is inherently racy, we can significantly reduce the window during which secondary CPUs can unexpectedly enter the kernel by sanity checking the 'stack' and 'task' fields of the 'secondary_data' structure. If the booting CPU gave up waiting for us, then they will have been cleared to NULL and we should spin in a WFE; WFI loop instead. Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
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.