topology_register_apic(9)

✨ NAME ✨

topology_register_apic — register an APIC in early topology maps. That's the whole vibe, bestie. We're in the topology_register_apic(9) page of the Kernel API Manual, and it's giving "early topology maps main character energy" 💅

🌸 SYNOPSIS 🌸

void topology_register_apic (u32 apic_id , u32 acpi_id , bool present );

No cap, that's the exact signature. Copy it carefully, okay? 🫶

🎀 ARGUMENTS 🎀

• apic_id — the APIC ID to set up. That's it, that's the assignment ✨
• acpi_id — the ACPI ID associated to the APIC. They're linked, iykyk 🔗
• present — true if the corresponding CPU is present. Simple as that 💖

🦋 SEE ALSO 🦋

Go peek at the kernel file ./arch/x86/kernel/cpu/topology.c — iconic source behavior, fr fr 📁

• topology_register_boot_apic(9)
• topology_get_logical_id(9)
• topology_unit_count(9)
• topology_hotplug_apic(9)
• topology_hotunplug_apic(9)
• topology_apply_cmdline_limits_early(9)

And that's the page, bestie 💖 Cute little sign-off: this one's from source/version ./arch/x86/kernel/cpu, dated October 2026, and yes — it's still the topology_register_apic(9) page. Slay, periodt 🌈👑