00e05495c5727b0f7027ad6a2e235da62357d957 - scripts/x86/intel: Add a script to update the old microcode list

Tue, 07 Apr 2026 03:42:26 +0200

scripts/x86/intel: Add a script to update the old microcode listThe kernel maintains a table of minimum expected microcode revisions forIntel CPUs in intel-ucode-defs.h. Systems with microcode older thanthese revisions are flagged with X86_BUG_OLD_MICROCODE.The static list of microcode revisions needs to be updated periodicallyin response to releases of the official microcode at:https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files.git.Introduce a simple script to extract the revision information from themicrocode files and print it in the precise format expected by themicrocode header.Maintaining the script in the kernel tree ensures a central locationthat a submitter can use to generate the kernel-specific update. Thisnot only reduces the possibility of errors but also makes it easier tovalidate the changes for reviewers and maintainers.Typically, someone at Intel would see a new public release, wait for atleast three months to ensure the update is stable, run this script torefresh the intel-ucode-defs.h file, and send a patch upstream to updatethe mainline and stable versions.Having a standard update script and a defined process minimizes theambiguity when refreshing the old microcode list. As always, there canbe exceptions to this process which should be supported with appropriatejustification.Originally-by: Dave Hansen Signed-off-by: Sohil Mehta Signed-off-by: Dave Hansen Link: https://patch.msgid.link/20260407014226.1169040-3-sohil.mehta@intel.com List of files: /linux/scripts/update-intel-ucode-defs.py

Changes in update-intel-ucode-defs.py

00e05495c5727b0f7027ad6a2e235da62357d957 - scripts/x86/intel: Add a script to update the old microcode list