CONFIG_MICROCODE_LATE_LOADING: Late microcode loading (DANGEROUS)

General informations

The Linux kernel configuration item CONFIG_MICROCODE_LATE_LOADING:

• prompt: Late microcode loading (DANGEROUS)
• type: bool
• depends on: CONFIG_MICROCODE
• defined in arch/x86/Kconfig
• found in Linux kernels: 5.19, 6.0–6.5, 6.6-rc+HEAD

Help text

Loading microcode late, when the system is up and executing instructions is a tricky business and should be avoided if possible. Just the sequence of synchronizing all cores and SMT threads is one fragile dance which does not guarantee that cores might not softlock after the loading. Therefore, use this at your own risk. Late loading taints the kernel too.

Hardware

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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