Messages in this thread | | | Date | Sat, 20 Apr 2002 12:30:02 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] Re: SSE related security hole |
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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.
Linus
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