Thankfully, I regained my sanity before going that far. The "a second CPU started" example at: https://github.com/cirosantilli/x86-bare-metal-examples/tree/528a

Thankfully, I regained my sanity before going that far. The "a second CPU started" example at: https://github.com/cirosantilli/x86-bare-metal-examples/tree/528ab2becc4992218ca0b7e297f3e1f1674268de#smp https://github.com/cirosantilli/x86-bare-metal-examples/tree... though. I think some of the projects under https://github.com/cirosantilli/x86-bare-metal-examples/tree/528ab2becc4992218ca0b7e297f3e1f1674268de#small-educational-projects https://github.com/cirosantilli/x86-bare-metal-examples/tree... did it though.