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x86-urgent-2022-04-17

tagged this 17 Apr 09:58
  - Use either MSR_TSX_FORCE_ABORT or MSR_IA32_TSX_CTRL to disable TSX to
    cover all CPUs which allow to disable it.

  - Disable TSX development mode at boot so that a microcode update which
    provides TSX development mode does not suddenly make the system
    vulnerable to TSX Asynchronous Abort.
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