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    SubjectRe: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE*
    On 04/22/2014 06:23 PM, Andrew Lutomirski wrote:
    >
    > What's the to_dmesg thing for?
    >

    It's for debugging... the espfix page tables generate so many duplicate
    entries that trying to output it via a seqfile runs out of memory. I
    suspect we need to do something like skip the espfix range or some other
    hack.

    > It looks sane, although I haven't checked the detailed register manipulation.
    >
    > Users of big systems may complain when every single CPU lines up for
    > that mutex. Maybe no one cares.

    Right now the whole smpboot sequence is fully serialized... that needs
    to be fixed.

    Konrad - I really could use some help figuring out what needs to be done
    for this not to break Xen.

    -hpa



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