Re: [PATCH 1/1] RAS: Add CPU Correctable Error Collector to isolate an erroneous CPU core

[Borislav Petkov]

On Tue, Sep 01, 2020 at 03:01:40PM +0100, Shiju Jose wrote:
> When the CPU correctable errors reported on an ARM64 CPU core too often,
> it should be isolated. Add the CPU correctable error collector to
> store the CPU correctable error count.
> 
> When the correctable error count for a CPU exceed the threshold
> value in a short time period, it will try to isolate the CPU core.
> The threshold value, time period etc are configurable.
> 
> Implementation details is added in the file.
> 
> Signed-off-by: Shiju Jose <shiju.jose@xxxxxxxxxx>
> ---
>  Documentation/ABI/testing/debugfs-cpu-cec |  22 ++
>  arch/arm64/ras/Kconfig                    |   8 +
>  drivers/acpi/apei/ghes.c                  |  30 +-
>  drivers/ras/Kconfig                       |   1 +
>  drivers/ras/Makefile                      |   1 +
>  drivers/ras/cpu_cec.c                     | 393 ++++++++++++++++++++++

So instead of adding the ability to collect other error types to the
CEC, you're duplicating the CEC itself?!

Why?

-- 
Regards/Gruss,
    Boris.

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