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    SubjectRe: [PATCH] x86-64: adjust pmd_bad()
    >>> Hugh Dickins <> 15.11.06 18:01 >>>
    >On Wed, 15 Nov 2006, Jan Beulich wrote:
    >> Make pmd_bad() symmetrical to pgd_bad() and pud_bad(). At once,
    >> simplify them all.
    >Symmetrical and simpler, yes, but you're weakening the pmd_bad() test:
    >no longer requires that all those _KERNPG_TABLE bits be set. Wouldn't
    >it be better to go the other way and strengthen pgd_bad, pud_bad?

    Maybe, but there must have been a reason for not doing so. It could
    certainly be a follow-up patch - if it works.

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