STRUCT IRQ_FWSPEC_INFO(9)

✨ struct irq_fwspec_info(9) ✨

okay so bestie, welcome to the Kernel API Manual entry for struct irq_fwspec_info — it's giving "small but mighty" and honestly? iconic. let's get into it 💅

---

🌸 NAME 🌸

struct irq_fwspec_info — firmware provided IRQ information structure 🫶

---

🎀 SYNOPSIS 🎀

struct irq_fwspec_info {
    unsigned long           flags;
    const struct cpumask    *affinity;
 };

---

💖 Members 💖

• flags — Information validity flags ✨ like, it tells you whether the info is valid, that's the whole vibe
• affinity — Affinity mask for this interrupt 🎯 which CPUs it's chilling with

---

🦋 Description 🦋

okay so listen. this structure reports firmware-specific information about an interrupt — that's literally the whole gig, no cap 🔥

the only significant information rn is the affinity of a per-CPU interrupt, but here's the slay part: this is designed to be extended as required. so it's future-proofed, it's main character energy, it's got room to grow 🌱💜

---

🌈 SEE ALSO 🌈

Kernel file ./include/linux/irqdomain.h — and like, all the besties it hangs with:

• struct irq_fwspec(9)
• struct irq_domain_ops(9)
• struct irq_domain(9)
• struct irq_domain_info(9)
• irq_domain_create_linear(9)
• irq_create_mapping(9)
• irq_resolve_mapping(9)
• irq_find_mapping(9)
• irq_domain_create_hierarchy(9)
• irq_domain_alloc_irqs(9)

---

and that's the whole page, bestie 💖 no notes. this entry lives in ./include/linux, officially dated October 2026, and it's filed under struct irq_fwspec_info(9) — drink some water, go read irqdomain.h, mwah 🧚💜