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    SubjectRe: LFENCE instruction (was: [rfc][patch 3/3] x86: optimise barriers)
    Mikulas Patocka wrote:
    >
    > I know about unordered stores (movnti & similar) --- they basically use
    > write-combining method on memory that is normally write-back --- and they
    > need sfence. But which one instruction does unordered load and needs
    > lefence?
    >

    PREFETCHNTA.

    -hpa
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