CPU_STARTUP(9)

💅 NAME 💅

okay so this is the CPU_STARTUP(9) page from the Kernel Developer's Manual, and it's literally all about machine-dependent CPU startup. Bestie, it's short but it matters 💖

✨ SYNOPSIS ✨

#include <sys/systm.h>

void
cpu_startup(void);

🫶 DESCRIPTION 🫶

The machine-dependent cpu_startup() is invoked early during system bootstrap — like, early early. It shows up after the console has been set up and immediately after uvm(9) has been initialized. No cap, that timing is the whole vibe ✨

The following tasks are performed by cpu_startup():

• print the initial copyright message;
• allocate memory and buffers for kernel tables; and
• initialize the CPU.

That's the whole glow-up: copyright, kernel-table memory and buffers, then CPU init. Periodt 💅

👑 SEE ALSO 👑

• autoconf(9)
• uvm(9)

This iconic little page is from Debian, dated April 13, 2010, and it's CPU_STARTUP(9) forever — mwah 💋✨🎀