CPUs for the last 50 years have had side-channel attacks. No, we don't know how to build a CPU that isn't vulnerable to side-channel attacks.
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Replying to @ErrataRob
For the most part side channels are only interesting when there's a way to read them from a different privilege context inside the same system.
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Replying to @RichFelker @ErrataRob
And we do know how to build cpus without that kind of flaw.
9:02 PM - 6 Jan 2018
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