irq_set_default_domain(9)

📦 version 7.3.1, in nixpkgs unstable

✨ irq_set_default_domain ✨

Hey bestie! 🌸 So this is a page from the Kernel API Manual, and it's all about irq_set_default_domain — like, the function that sets your go-to, fallback irq domain. Serving main character energy for your interrupt mappings, periodt. Let's get into it. 💅

🎀 NAME 🎀

irq_set_default_domain — Set a "default" irq domain

🦋 SYNOPSIS 🦋

void irq_set_default_domain (struct irq_domain *domain );

🌈 ARGUMENTS 🌈

  • domain — the default domain pointer. Yep, that's it. That's the whole vibe. 🫶

💖 DESCRIPTION 💖

Okay so, for convenience — and honestly, who doesn't love convenience — it's totally possible to set a "default" domain. And the way that works is: whenever NULL is passed to irq_create_mapping, this default domain is the one that gets used. 🌟

It makes life easier for platforms that want to manipulate a few hard coded interrupt numbers that aren't properly represented in the device-tree. Lowkey iconic of them. No cap. 💀✨

It's giving "fallback bestie" — you don't call them every time, but when you pass NULL, they show up. 😭💜

🌸 SEE ALSO 🌸

Okay bestie, buckle up, because the squad is LONG and they all ate. 💅🔥 Here's the whole guest list, from the Kernel file ./kernel/irq/irqdomain.c:

Literally the whole friend group showed up. Obsessed. 👑💖

And that's the page, bestie! Signing off from the ./kernel/irq directory — this edition dropped in October 2026, so you know it's fresh. 🗓️✨ Stay hydrated, keep your domains default, and slay those interrupts. 🧚💜🎀

📦 where this page comes from