epf_ntb_db_bar_init(9)

📦 version 7.3.1, in nixpkgs unstable

💖 epf_ntb_db_bar_init — Kernel API Manual, bestie edition 💖

okay so this is a page from the Kernel API Manual, and honestly? It's a little one, but she's important. Let's get into it. 🎀

✨ NAME ✨

epf_ntb_db_bar_init — the function that configures Doorbell window BARs. Yes, Doorbell. Like the thing at your front door but for PCIe, and no cap it's iconic. 🔔🦋

🌸 SYNOPSIS 🌸

int epf_ntb_db_bar_init (struct epf_ntb *ntb );

That's the whole vibe: it takes one pointer and hands you back an int. Clean. Minimalist. Main character energy. ✨

👑 ARGUMENTS 👑

  • ntb — a struct epf_ntb *, aka the NTB device that facilitates communication between HOST and VHOST. She's the matchmaker 💅, keeping the two sides talking. Literally the social butterfly of the endpoint world.

🔥 RETURN 🔥

  • Zero for success 🎉 (we love a zero)
  • or an error code in case of failure 😭 (we do not love that, but we respect it)
fr fr, check that return value. Zero = slay. Anything else = go read the error code.

🧚 SEE ALSO 🧚

The kernel file lives right here 🫶:

./drivers/pci/endpoint/functions/pci-epf-vntb.c

and these are all her friends, the whole squad, the entire group chat 💜:

like genuinely go read those, they all live in the same neighborhood 🏡💖

anyway that's the whole page bestie, ily, go init some doorbells 🎀✨

signing off from ./drivers/pci/endpoint/functions, October 2026 — mwah 💋💅

📦 where this page comes from