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    SubjectRe: [RFC 00/15] x86_64: Optimize percpu accesses
    Jeremy Fitzhardinge wrote:

    > Eh? Yes they will. That's the whole point of making the pda a percpu
    > variable itself. You can use %gs:<small> to get to the pda, and
    > %gs:<larger> to get to percpu variables. Converting pda->percpu will
    > just have the effect of increasing the %gs offset into the percpu space.

    Right that is what this patchset does.

    > This project isn't interesting to me unless per-cpu variables are
    > directly accessible off %gs.

    Maybe I misunderstood but it seems that you proposed to convert individual members of the pda structure (which uses GS) to per cpu variables (which without this patchset cannot use GS).

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      Last update: 2008-07-09 20:37    [W:0.023 / U:2.924 seconds]
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