Source: Hacker News
Article note: Getting a twofer today on "Intel processors get noticeably slower with each microcode update, as they are forced to disable sloppy bullshit that they shipped to win the numbers game."
Latest microcode turns off all the TSX Hardware Lock Elision features in all processors, plus turns off a (probably exploitable) fast path for all JCC (Jump Conditionals) that happen to end on or across a 32-bit boundary (see: https://twitter.com/damageboy/status/1194751035136450560 ).
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