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Some systems may report spurious MCA errors. In general, spurious MCA errors may be disabled by clearing a particular bit in MCA_CTL. However, clearing a bit in MCA_CTL may not be recommended for some errors, so the only option is to ignore them. An MCA error is printed and handled after it has been added to the MCE event pool. So an MCA error can be ignored by not adding it to that pool in the first place. Add such a filtering function. [ bp: Move function prototype to the internal header and massage. ] Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "clemej@gmail.com" <clemej@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Pu Wen <puwen@hygon.cn> Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Cc: "rafal@milecki.pl" <rafal@milecki.pl> Cc: Shirish S <Shirish.S@amd.com> Cc: <stable@vger.kernel.org> # 5.0.x Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190325163410.171021-1-Yazen.Ghannam@amd.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.