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    SubjectRe: [patch 1/2] x86_64 page fault NMI-safe
    On 07/15/2010 10:38 AM, Mathieu Desnoyers wrote:
    >>
    >> Of course, if there is some trap that re-enables interrupts even if
    >> the trap happened in an interrupt-disabled region, then that would
    >> change things, but that would be a bad bug regardless (and totally
    >> independently of any NMI issues). So in that sense it's a "could
    >> happen", but it's something that would be a totally separate bug.
    >
    > Yep, this kind of scenario would therefore be a bug that does not belong to the
    > specific realm of nmis.
    >

    Yes, the only specific issue here is NMI -> trap -> IRET -> [nested
    NMI], which is what this whole thing is about.

    -hpa

    --
    H. Peter Anvin, Intel Open Source Technology Center
    I work for Intel. I don't speak on their behalf.



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