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    SubjectRe: [RFC 00/15] x86_64: Optimize percpu accesses
    Eric W. Biederman wrote:
    ...
    > Another alternative that almost fares better then a segment with
    > a base of zero is a base of -32K or so. Only trouble that would get us
    > manually managing the per cpu area size again.

    One thing to remember is the eventual goal is implementing the cpu_alloc
    functions which I think we've agreed has to be "growable". This means that
    the addresses will need to be virtual to allow the same offsets for all cpus.
    The patchset I have uses 2Mb pages. This "little" twist might figure into the
    implementation issues that are being discussed.

    Thanks,
    Mike


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