Messages in this thread | | | Date | Thu, 12 Nov 2020 13:54:42 -0800 | From | "Raj, Ashok" <> | Subject | Re: [PATCH][RFC] x86/microcode/intel: check cpu stepping and processor flag before saving microcode |
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Hi ChenYu
I think you can drop the RFC tag.
I suppose you can add Cc stable as well. Boris should return next week to take a look.
On Tue, Nov 10, 2020 at 09:52:47PM +0800, Chen Yu wrote: > Currently scan_microcode() leverages microcode_matches() to check if the > microcode matches the CPU by comparing the family and model. However before > saving the microcode in scan_microcode(), the processor stepping and flag > of the microcode signature should also be considered in order to avoid > incompatible update and caused the failure of microcode update. > > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=208535 > Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading") > Suggested-by: "Raj, Ashok" <ashok.raj@intel.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Len Brown <len.brown@intel.com> > Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> > Cc: "Raj, Ashok" <ashok.raj@intel.com> > Cc: Tony Luck <tony.luck@intel.com> > Signed-off-by: Chen Yu <yu.c.chen@intel.com> > --
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Cheers, Ashok
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