Kidding aside, my understanding is this sort of thing cannot be microcode patche... | Hacker News

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		basementcat on Feb 4, 2025 \| parent \| context \| favorite \| on: AMD: Microcode Signature Verification Vulnerabilit... Kidding aside, my understanding is this sort of thing cannot be microcode patched. But I would be pleased to be proven wrong.

Lockal on Feb 4, 2025 [–]

It can be patched, see example in "constant-time hardware division" section in https://misc0110.net/files/cpu_woot23.pdf (code: https://github.com/pietroborrello/CustomProcessingUnit/blob/...). You probably won't observe any improvement unless you know an algo massively better than reciprocals+newton.

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