Why is it needed? As far as I understand FSP 2.1, that introduced
MP_SERVICES_PPI, also introduced shared stack when selecting
FSP_USES_CB_STACK.
Simply select FSP_USES_CB_STACK when using MP_SERVICES_PPI should
fix the issue.

The reason is that, on FSP2.0 platform also we might need to enable MP PPI feature but same stack sharing concept might not applied on FSP 2.0 enabled platform, hence we are looking for some solution to bypass stack dependencies.

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1 comment:

• File src/soc/intel/common/block/cpu/cpulib.c:

  • Patch Set #10, Line 327: unsigned long cpu_index(void)

    will this function work for all x86 that exist? I believe it will. […]

    true, i believe this function qualify good to enable on all x86 platform

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