Why are there sometimes `_DUPLICATE` microcode files?

intel / Intel-Linux-Processor-Microcode-Data-Files

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Why are there sometimes `_DUPLICATE` microcode files? #68

Closed nicholasbishop closed 1 year ago

nicholasbishop commented 1 year ago

Most of the microcode files are named in family-model-stepping format as described in the readme. Recently however (starting in commit 752cd0a7f09244f9336b7bb6d570e780e502c290) some files have been introduced with the format family-model-stepping_DUPLICATE. I'm curious why these files exist?

JonathonHall-Purism commented 1 year ago

I noticed this for 06-8e-09, in that case it looks like they have different platform support (c0 vs. 10)

hmh commented 1 year ago

Looks like a side-effect of whatever tool Intel is using to copy microcode data into F-M-S (family-model-stepping) files. It is just noise, really, and they have deleted the *_DUPLICATE files, now.