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    SubjectRe: [NAK] Re: [PATCH -v2 9/9] ACPI, APEI, Generic Hardware Error Source POLL/IRQ/NMI notification type support

    * Thomas Gleixner <> wrote:

    > >From Kconfig:
    > EDAC is designed to report errors in the core system.
    > These are low-level errors that are reported in the CPU or
    > supporting chipset or other subsystems:
    > memory errors, cache errors, PCI errors, thermal throttling, etc..
    > If unsure, select 'Y'.
    > So please explain why your error reporting is so different from the above that it
    > justifies a separate facility. And you better come up with a real good explanation
    > other than we looked at EDAC and it did not fit our needs.

    Btw., it's not just about EDAC - the firmware can store Linux events persistently
    (beyond allowing the firmware to insert its own RAS events), that is obviously
    _hugely_ useful for kernel debugging in general. We could inject debugging events
    there and recover them after a crash, etc.

    As long as it's all integrated into the standard event logging facilities it could
    be very useful (and i dont generally complain about things that are insignificant).

    As /dev/erst-dbg it's not useful at all - in fact it might close the door to sane
    future usage of this hw facility if some crappy user-space learns to rely on the
    /dev/erst-dbg ABI.



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