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On 05/04/18 17:54, Rich Freeman wrote: |
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> I |
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> haven't checked recently but the last time I looked at it even my |
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> current Ryzen CPU doesn't have a microcode fix out yet for lfence. |
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Is lfence a meltdown problem? Because afaik Ryzen doesn't need a fix for |
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meltdown, it's not vulnerable. |
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As for Spectre, it's inherent in modern CPU design. There IS no fix, |
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other than going back to the drawing board and scrapping years of |
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optimisation, making computers maybe 30% slower :-( |
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I don't think Spectre IS fixable. Sure we can play whack-a-mole, but |
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unless we rip up the lawn and replace it with concrete, the problem will |
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simply come back in another guise. |
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Cheers, |
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Wol |