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    From
    SubjectRe: Memory Management - BSD vs Linux
    Date
    Followup to:  <199708131752.KAA13458@connectnet1.connectnet.com>
    By author: Darin Johnson <darin@connectnet.com>
    In newsgroup: linux.dev.kernel
    >
    > Ah, this makes more sense now. I assumed TLB's were always
    > automatically managed, and didn't realize some chips might not
    > do this.
    >

    No, and it is becoming less common on RISC chips, at least. The Alpha
    does TLB reloads in the PALcode (Privileged Architecture Library),
    which is software, although running in a special privileged mode --
    in some sense similar to SMM on Intel chips.

    -hpa
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