Next up in Linux's bootup sequence it iterates over available CPU cores retrieving NUMA data & storing it in core-specific memory. Using x86- or Loongarch- specific core, & due to lineage referring to cores as "CPUs".

After that it sets a bitmask & a CPU-specific atomic to indicate that this core has successfully booted (if compiled for multicore machines), followed by a couple more core-specific variables.

1/1 Fin for today! (short on time) Tomorrow: Commandline args!