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    SubjectRe: Kernel oops with 2.6.26, padlock and ipsec: probably problem with fpu state changes
    Date
    Am Freitag, 8. August 2008 21:01 schrieb H. Peter Anvin:
    > Suresh Siddha wrote:
    > > I propose to go with wolf's patch which add's kernel_fpu_begin() and
    > > kernel_fpu_end() around these instructions. This is the correct fix
    > > (unless there is something wrong in my above understanding).
    >
    > It's technically overkill, if (and only if!) these instructions don't
    > actually touch the SSE state (most likely they're using the SSE
    > pipeline, and need this stuff to deal with power management issues.)
    >
    > However, overkill is a good way to make sure something is dead.
    > Applying the patch will make sure we fix the regression, and we can
    > worry about optimizing this further post-2.6.27.
    >
    > -hpa

    Probably

    drivers/crypto/padlock-sha.c
    drivers/char/hw_random/via-rng.c

    needs a fix, too.

    Regards,
    --
    Wolfgang Walter
    Studentenwerk München
    Anstalt des öffentlichen Rechts
    Leiter EDV
    Leopoldstraße 15
    80802 München
    Tel: +49 89 38196 276
    Fax: +49 89 38196 150
    Email: wolfgang.walter@stwm.de
    http://www.studentenwerk-muenchen.de/
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