iommu_group_ref_get(9)

📦 version 7.3.1, in nixpkgs unstable

💖 iommu_group_ref_get — like, the manual page, but make it make sense 💖

okay so bestie, welcome to the Kernel API Manual entry for iommu_group_ref_get — yes that's a mouthful, yes it's iconic, and yes we're gonna get through it together 🫶

✨ NAME ✨

iommu_group_ref_get — increments the reference count on a group. that's it. that's the whole vibe. a little "+1 bestie" for your IOMMU group 💅

🌸 SYNOPSIS 🌸

struct iommu_group * iommu_group_ref_get (struct iommu_group *group );

like, it takes a group and hands it right back to you. main character energy fr fr 👑

🦋 ARGUMENTS 🦋

  • group — the group you're working with, and just so we're clear: it must not be NULL. no cap, do not pass NULL here, that's not the move 🙈

🎀 DESCRIPTION 🎀

so here's the tea ☕ — this function gets called by iommu drivers when they wanna take additional references on a group that already exists. think of it as adding your name to the group chat so it doesn't get archived while you're still in it 💀

and the cute part? it returns the given group for convenience. like, "here's your group back, bestie, you're welcome" ✨ so you can chain it or whatever, slay.

🔥 SEE ALSO 🔥

the lore lives in the kernel file ./drivers/iommu/iommu.c, and here's the whole friend group — every single one, no skips, we don't do that here 💖

ngl the reference thing matters — extra references are how the group stays alive while drivers are still using it. increment responsibly, bestie 😭

okay that's the page!! sourced from ./drivers/iommu, dated October 2026, and it's part of the Kernel API Manual — mwah, go touch some code 💜🎀🌈

📦 where this page comes from