"TSC_DEADLINE disabled due to Errata" is shown

Solution In Progress - Updated -

Issue

  • The following message is shown after updating kernel.

    [FIrmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0xb000020 (or later)

Environment

  • Red Hat Enterprise Linux 7.5
  • kernel-3.10.0-862.el7 or later

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