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CONFIG_MICROCODE_LATE_FORCE_MINREV: Enforce late microcode loading minimal revision check

General informations

The Linux kernel configuration item CONFIG_MICROCODE_LATE_FORCE_MINREV:

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To prevent that users load microcode late which modifies already in use features, newer microcode patches have a minimum revision field in the microcode header, which tells the kernel which minimum revision must be active in the CPU to safely load that new microcode late into the running system. If disabled the check will not be enforced but the kernel will be tainted when the minimal revision check fails.

This minimal revision check can also be controlled via the "microcode.minrev" parameter on the kernel command line.

If unsure say Y.



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