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    SubjectRe: [PATCH 3/3] efi: Add support for using efivars as a pstore backend
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    On Mon, Jun 6, 2011 at 12:38 PM, Matthew Garrett <mjg@redhat.com> wrote:
    > EFI provides an area of nonvolatile storage managed by the firmware. We
    > can use this as a pstore backend to maintain copies of oopses, aiding
    > diagnosis.

    Most of the new lines you add to efivars.c should be inside

    #ifdef CONFIG_PSTORE
    ...
    #endif

    so that they don't bloat the kernel if PSTORE isn't configured.

    I may have made a poor decision having drivers/acpi/apei/Kconfig
    do a "select PSTORE" for the ACPI_APEI option.
    It should probably be a normal "def_bool n" sort of thing.

    -Tony


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