Anyone want to place bets on whether the first actual fix for Spectre will be via reverse engineered and patched microcode?https://twitter.com/thorstenholz/status/1031839729145311232 …
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I think there's a really good chance someone who studied the way the microcode works deeply enough would find a way to disable speculation, make all instructions speculation barriers, kill all branch prediction, or do something else that would completely defang Spectre.