Blame SOURCES/06-4f-01_disclaimer

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Microcode update for Intel Broadwell-EP/EX (BDX-ML B/M/R0; family 6, model 79,
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stepping 1; CPUID 0x406f1) CPUs is disabled as it may cause system instability.
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Please refer to /usr/share/doc/microcode_ctl/caveats/06-4f-01_readme
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and /usr/share/doc/microcode_ctl/README.caveats for details.