[M] Change in coreboot[master]: soc/intel/common: Order the different types of cores based on APIC IDs

[Sridhar Siricilla (Code Review)]

Attention is currently required from: Subrata Banik, Paul Menzel, Kyösti Mälkki, Jan Samek, Elyes Haouas.

Sridhar Siricilla has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/72132 )

Change subject: soc/intel/common: Order the different types of cores based on APIC IDs
......................................................................

Patch Set 18:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/72132/comment/ef5614af_7d3ccda4 
PS18, Line 13: /sys/devices/system/cpu/cpu0/topology/thread_siblings_list:0-1
> Sorry to ask a stupid question, but isn't just the first list unordered? After ordering it, the assi […]

Hey, no problem, you can ask questions.
I chose the command output to indicate P-cores (for which hyper threading can be enabled) ordered first and E-cores ordered later as  this can be seen visibly with thread_siblings_list output.

The APIC ID assignment to cores got changed from ADL to MTL. In ADL,   APIC numbering for cores starts from P-cores (get lowers numbers) to E-Cores. But, APIC ID assignment got changed in MTL  wherein E-cores get lower APIC IDs compare to P-cores. You may refer @section# 6.1 of doc#643504 for details.

Did I answer your query?