STRUCT VMD_IRQ(9)

🦋 struct vmd_irq(9) — the Kernel API Manual glow-up 🦋

okay so bestie, welcome to the struct vmd_irq(9) page 💅 this lil cutie lives in the Kernel API Manual and honestly? it's giving backstage-pass energy. iykyk.

---

✨ NAME ✨

struct vmd_irq — private data to map driver IRQ to the VMD shared vector 🫶

like, it's the private little notebook that keeps track of which driver IRQ goes where on the VMD shared vector. no cap.

---

🌸 SYNOPSIS 🌸

struct vmd_irq {
    struct list_head        node;
    struct vmd_irq_list     *irq;
    bool enabled;
    unsigned int            virq;
 };

look at her. four fields. main character energy fr fr 👑

---

🎀 Members 🎀

• node — list item for parent traversal. it's literally the little handle that lets you walk up to the parent, lowkey essential 🧚
• irq — back pointer to parent. yes bestie, she points back home 💖
• enabled — true if driver enabled IRQ. that's the vibe check right there — true means the driver turned it on ⭐
• virq — the virtual IRQ value provided to the requesting driver. this is the number the driver actually gets handed, iconic 🌈

---

💜 Description 💜

so the whole point, bestie: every MSI/MSI-X IRQ requested for a device in a VMD domain will be mapped to a VMD IRQ using this structure. that's it, that's the tea ☕ every single one, no skipping, no shortcuts — this struct is doing the mapping 🔥

---

🦋 SEE ALSO 🦋

• Kernel file ./drivers/pci/controller/vmd.c
• struct vmd_irq_list(9)

---

ok that's the whole page, go read vmd.c if you want the full lore 📖✨

---

mwah 💋 this page came from ./drivers/pci/controller, dated October 2026, and it's officially titled struct vmd_irq(9) — periodt.