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[ Upstream commitf94c91f7ba] When nmi_check_duration() is checking the time an NMI handler took to execute, the whole_msecs value used should be read from the @duration argument, not from the ->max_duration, the latter being used to store the current maximal duration. [ bp: Rewrite commit message. ] Fixes:248ed51048("x86/nmi: Remove irq_work from the long duration NMI handler") Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Libing Zhou <libing.zhou@nokia-sbell.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Changbin Du <changbin.du@gmail.com> Link: https://lkml.kernel.org/r/20200820025641.44075-1-libing.zhou@nokia-sbell.com Signed-off-by: Sasha Levin <sashal@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.