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Merge tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 microcode loading updates from Borislav Petkov:

 - Add infrastructure to be able to debug the microcode loader in a guest

 - Refresh Intel old microcode revisions

* tag 'x86_microcode_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Add microcode loader debugging functionality
  x86/microcode: Add microcode= cmdline parsing
  x86/microcode/intel: Refresh the revisions that determine old_microcode
This commit is contained in:
Linus Torvalds
2025-09-30 12:41:10 -07:00
parent 45d96dd2c6 43181a4726
commit bd91417a96
6 changed files with 174 additions and 69 deletions
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12
Documentation/admin-guide/kernel-parameters.txt
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@@ -3767,8 +3767,16 @@
mga= [HW,DRM]
microcode.force_minrev= [X86]
Format: <bool>
microcode= [X86] Control the behavior of the microcode loader.
Available options, comma separated:
base_rev=X - with <X> with format: <u32>
Set the base microcode revision of each thread when in
debug mode.
dis_ucode_ldr: disable the microcode loader
force_minrev:
Enable or disable the microcode minimal revision
enforcement for the runtime microcode loader.