intel_vgpu_reg_ier_handler(9)

📦 version 7.3.1, in nixpkgs unstable

💖 intel_vgpu_reg_ier_handler(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one's about intel_vgpu_reg_ier_handler, and honestly? it's giving "small function, big responsibilities" energy. let's get into it 🎀

✨ NAME ✨

intel_vgpu_reg_ier_handler — the Generic IER write emulation handler. that's it, that's the whole vibe. it emulates. it handles. it's generic. slay 💅

🌸 SYNOPSIS 🌸

int intel_vgpu_reg_ier_handler (struct intel_vgpu *vgpu , unsigned int
reg , void *p_data , unsigned int bytes );

no cap, that's the exact signature — four args, returns an int. copy it carefully, it is literally the whole point 🦋

🫶 ARGUMENTS 🫶

  • vgpu — a vGPU. yeah that's the entire description and honestly? iconic brevity. it's the virtual GPU we're messing with 💜
  • reg — the register offset that the guest wrote to. so, where the write landed 📍
  • p_data — the register data the guest wrote. the actual payload, the main character of this whole operation ✨
  • bytes — the length of that register data. how many bytes we're dealing with, bestie 📏

🔥 DESCRIPTION 🔥

so this function exists to emulate the generic IER register behavior. that's the official tea. the kernel hits this handler when it needs that generic IER emulation done, and it does it. no notes, periodt 👑

(iykyk — IER, IMR, IIR, they're all hanging out together, see the SEE ALSO if you wanna go down that rabbit hole 🐇)

⭐ RETURN ⭐

  • Zero on success — the good ending 🎀
  • a negative error code if it failed — the not-so-good ending 😭

so like, always check your return value, bestie. fr fr.

🌈 SEE ALSO 🌈

the kernel file that's living in this whole situation:

./drivers/gpu/drm/i915/gvt/interrupt.c

and the whole friend group 💖:

go read all of them, they ate 🔥

and that's the page!! this little cutie comes from ./drivers/gpu/drm/i915/gvt and was dated October 2026 — mwah, thanks for reading, ily, go touch some registers 🧚‍♀️💖✨

📦 where this page comes from