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5c4663ed1e
Extend the logic of handling CMCI storms to AMD threshold interrupts.
Rely on the similar approach as of Intel's CMCI to mitigate storms per CPU and
per bank. But, unlike CMCI, do not set thresholds and reduce interrupt rate on
a storm. Rather, disable the interrupt on the corresponding CPU and bank.
Re-enable back the interrupts if enough consecutive polls of the bank show no
corrected errors (30, as programmed by Intel).
Turning off the threshold interrupts would be a better solution on AMD systems
as other error severities will still be handled even if the threshold
interrupts are disabled.
[ Tony: Small tweak because mce_handle_storm() isn't a pointer now ]
[ Yazen: Rebase and simplify ]
[ Avadhut: Remove check to not clear bank's bit in mce_poll_banks and fix
checkpatch warnings. ]
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20251121190542.2447913-3-avadhut.naik@amd.com
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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.