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We have support for the new SMCA MCA_DE{STAT,ADDR} registers in Linux.
So we've used these registers in place of MCA_{STATUS,ADDR} on SMCA
systems.
However, the guidance for current SMCA implementations of is to continue
using MCA_{STATUS,ADDR} and to use MCA_DE{STAT,ADDR} only if a Deferred
error was not found in the former registers. If we logged a Deferred
error in MCA_STATUS then we should also clear MCA_DESTAT. This also
means we shouldn't clear MCA_CONFIG[LogDeferredInMcaStat].
Rework __log_error() to only log an error and add helpers for the
different error types being logged from the corresponding interrupt
handlers.
Boris: carve out common functionality into a _log_error_bank(). Cleanup
comments, check MCi_STATUS bits before reading MSRs. Streamline flow.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1493147772-2721-1-git-send-email-Yazen.Ghannam@amd.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.