xe_gt_sriov...nfig_set_dbs(9)

📦 version 7.3.1, in nixpkgs unstable

💅 xe_gt_sriov_pf_config_set_dbs — the xe_gt_sriov...nfig_set_dbs(9) glow-up

okay so bestie, you're reading the Kernel API Manual ✨ and this page is all about one very specific little function. Let's get into it 🎀

🌸 NAME 🌸

xe_gt_sriov_pf_config_set_dbs — sets up the GuC doorbells IDs quota for a VF. That's it, that's the whole vibe 💅

🦋 SYNOPSIS 🦋

int xe_gt_sriov_pf_config_set_dbs (struct xe_gt *gt , unsigned int vfid
, u32 num_dbs );

like literally that's the signature, no cap 🔥

✨ ARGUMENTS ✨

  • gt — the xe_gt, our main character struct 🫶
  • vfid — the VF identifier, aka which virtual function we're talking to 👑
  • num_dbs — the number of GuC doorbells IDs you're requesting. and bestie, if you pass 0 it releases them 💀 (yes, zero means release, that's the whole rule)

💖 DESCRIPTION 💖

okay so real talk: this function can only be called on PF. that's not a suggestion, that's the whole constraint, periodt 🙈

🌈 RETURN 🌈

  • 0 on success 💚
  • a negative error code on failure 😭

like it's giving "you'll know if it worked" energy.

🎀 SEE ALSO 🎀

the source lives in the kernel file ./drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c 🗂️ and here is the entire friend group, all of them, no one left behind:

iykyk 💜

<div align="center">🌸 that's the whole page, bestie 🌸</div>

so this little love letter came from ./drivers/gpu/drm/xe and it's dated October 2026 — go forth and configure those doorbells responsibly, mwah 💋🦋

📦 where this page comes from