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    SubjectRe: [patch] x86, mm: pass in 'total' to __copy_from_user_*nocache()
    Nick Piggin wrote:
    >
    > I would expect any high performance CPU these days to combine entries
    > in the store queue, even for normal store instructions (especially for
    > linear memcpy patterns). Isn't this likely to be the case?
    >

    Actually, that is often not the case simply because it doesn't buy that
    much. The big win comes when you don't read a whole cache line in from
    memory, but that is a property of the cache, not the store queue.

    -hpa

    --
    H. Peter Anvin, Intel Open Source Technology Center
    I work for Intel. I don't speak on their behalf.



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