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The article explains the Linux kernel boot process on x86_64, from bootloader handoff to user space initialization, using a space colony metaphor to describe the initialization phases.
Kefir is an independent, open-source C17/C23 compiler developed by a single developer, targeting x86_64 with System-V ABI and supporting Linux and BSDs. It features an SSA-based optimization pipeline, DWARF5 debug info, bit-identical bootstrap, and has been validated against 100 real-world open-source projects.