[coreboot-gerrit] Change in coreboot[master]: soc/intel/*: Serialize microcode updates for HT threads

[Patrick Rudolph (Code Review)]

Attention is currently required from: Mariusz Szafrański, Suresh Bellampalli, Vanessa Eusebio, Angel Pons, Michal Motyl, Andrey Petrov.
Hello build bot (Jenkins), Lijian Zhao, Mariusz Szafrański, Paul Menzel, Rizwan Qureshi, Angel Pons, Subrata Banik, Andrey Petrov, Aaron Durbin, Patrick Rudolph, Nico Huber, Suresh Bellampalli, Tim Wawrzynczak, Christian Walter, Vanessa Eusebio, Michal Motyl,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/35739

to look at the new patch set (#28).

Change subject: soc/intel/*: Serialize microcode updates for HT threads
......................................................................

soc/intel/*: Serialize microcode updates for HT threads

This change only affects MPinit related microcode updates and is a
NOP for CPUs without HyperThreading enabled.

On HyperThreading-enabled platforms, update the microcode on a core
serialized for threads running on that core. This prevents the
"microcode: Update failed" error seen in the console log on boards
with multiple cores and HyperThreading enabled.

The SDM and most of the BWGs suggest doing this.

Change-Id: I72804753e567a137a5648ca6950009fed332531b
Signed-off-by: Patrick Rudolph 
---
M src/cpu/intel/common/common.h
M src/cpu/intel/common/hyperthreading.c
M src/cpu/intel/haswell/haswell_init.c
M src/cpu/intel/microcode/microcode.c
M src/cpu/intel/model_1067x/mp_init.c
M src/cpu/intel/model_2065x/model_2065x_init.c
M src/cpu/intel/model_206ax/model_206ax_init.c
M src/include/cpu/intel/microcode.h
M src/include/cpu/x86/lapic.h
M src/soc/intel/alderlake/cpu.c
M src/soc/intel/apollolake/cpu.c
M src/soc/intel/baytrail/cpu.c
M src/soc/intel/braswell/cpu.c
M src/soc/intel/cannonlake/cpu.c
M src/soc/intel/common/block/cpu/Kconfig
M src/soc/intel/common/block/cpu/mp_init.c
M src/soc/intel/common/block/sgx/sgx.c
M src/soc/intel/denverton_ns/cpu.c
M src/soc/intel/elkhartlake/cpu.c
M src/soc/intel/icelake/cpu.c
M src/soc/intel/jasperlake/cpu.c
M src/soc/intel/skylake/chip.c
M src/soc/intel/skylake/cpu.c
M src/soc/intel/skylake/include/soc/ramstage.h
M src/soc/intel/tigerlake/cpu.c
M src/soc/intel/xeon_sp/cpx/cpu.c
M src/soc/intel/xeon_sp/skx/cpu.c
27 files changed, 172 insertions(+), 55 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/35739/28