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In cpu_bringup() there is a call of preempt_disable() without a paired preempt_enable(). This is not needed as interrupts are off initially. Additionally this will result in early boot messages like: BUG: scheduling while atomic: swapper/1/0/0x00000002 Signed-off-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20210825113158.11716-1-jgross@suse.com Signed-off-by: Juergen Gross <jgross@suse.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.