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    SubjectRe: [RFC, patch] i386: vgetcpu(), take 2
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    Chuck Ebbert <76306.1226@compuserve.com> writes:

    > Use a GDT entry's limit field to store per-cpu data for fast access
    > from userspace, and provide a vsyscall to access the current CPU
    > number stored there.

    Just the CPU alone is useless - you want at least the node too in many
    cases. Best you use the prototype I proposed earlier for x86-64.

    -Andi
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