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Updates in the format described in section 9.11 of the Intel SDM can now be applied as one of the first steps in booting the kernel. Updates that are loaded this way are automatically re-applied upon exit from ACPI sleep states, in contrast with the existing cpucontrol(8)-based method. For the time being only Intel updates are supported. Microcode update files are passed to the kernel via loader(8). The file type must be "cpu_microcode" in order for the file to be recognized as a candidate microcode update. Updates for multiple CPU types may be concatenated together into a single file, in which case the kernel will select and apply a matching update. Memory used to store the update file will be freed back to the system once the update is applied, so this approach will not consume more memory than required. Reviewed by: kib MFC after: 6 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D16370 |
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| linux | ||
| pci | ||
| Makefile | ||