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    SubjectRe: SSE related security hole
    From
    >>
    >> Ummm...last I knew, fxrstor is *expensive*. The fninit/xor regs setup
    >> is likely *very* much faster. Someone should check this before we
    >> sacrifice 100 cycles needlessly or something.
    >
    > most probably yes, fxrestor needs to read ram, pxor also takes some
    > icache and bytecode ram but it sounds like it will be faster.
    >
    > Maybe we could also interleave the pxor with the xorps, since they uses
    > different parts of the cpu, Honza?
    >

    You almost certainly should. The reason I suggested FXRSTOR is that it
    would initialize the entire FPU, including any state that future
    processors may add, thus reducing the likelihood of any funnies in the
    future.



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