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    SubjectRe: [PATCH] Re: SSE related security hole

    On Sat, 20 Apr 2002, Andrea Arcangeli wrote:
    > Well, my preferred patch is still this one :)

    But this one simply will not get applied, for all the reasons already
    outlined. It _will_ cause the same problems that it tries to fix, just at
    some later time.

    Besides, I seriously doubt it is any faster than what is there already.

    Time it, and notice how:

    - fninit takes about 200 cycles
    - fxrstor takes about 215 cycles

    and your added 16*(pxor/xorps) likely takes at least 8 cycles.

    In short, your "fast" code isn't actually any faster than doing it right.


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