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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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