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d7ac083f09
Currently, when a CMCI storm detected on a Machine Check bank, subsides, the
bank's corresponding bit in the mce_poll_banks per-CPU variable is cleared
unconditionally by cmci_storm_end().
On AMD SMCA systems, this essentially disables polling on that particular bank
on that CPU. Consequently, any subsequent correctable errors or storms will not
be logged.
Since AMD SMCA systems allow banks to be managed by both polling and
interrupts, the polling banks bitmap for a CPU, i.e., mce_poll_banks, should
not be modified when a storm subsides.
Fixes:
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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 reStructuredText 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.