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    SubjectRe: linux-next: Tree for June 13: IO APIC breakage on HP nx6325
    On Sun, Jun 29, 2008 at 08:05:42PM +0100, Maciej W. Rozycki wrote:

    > It is the reverse -- checking the DSDT ID is coarser, matching all the
    > systems that use the broken firmware. With DMI we may face both false
    > positives and false negatives which imply further maintenance actions.
    > Please note as proved over the years understanding of these issues seems
    > to be problematic for people, so the result may be another round of
    > discussions reinventing the wheel in a couple of years' time or so.

    The DSDT can't be updated without the BIOS being updated, and the DMI
    information gives us a BIOS version string that can be matched against
    if a fixed version is ever released. I'd be in favour of doing it with
    DMI on the grounds that it's how we already handle machine-specific
    quirks rather than adding new code to do it.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


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