msi_domain_..._descs_range(9)

📦 version 7.3.1, in nixpkgs unstable

💅 msi_domain_free_msi_descs_range — Kernel API Manual, bestie edition 🎀

Okay so this is a function from the Kernel API Manual and honestly? It's giving cleanup era. ✨

🌸 NAME 🌸

msi_domain_free_msi_descs_range — frees a whole range of MSI descriptors for a device inside an irqdomain. Literally the "ok we're done here, release the descs" moment 💅

✨ SYNOPSIS ✨

void msi_domain_free_msi_descs_range (struct device *dev , unsigned int domid , unsigned int first , unsigned int last );

Note the return type: void. She does her job and doesn't report back, no cap. 🫶

🦋 ARGUMENTS 🦋

  • dev — the Device whose descriptors we're freeing. It's her descriptors, she's just handing them back. 💖
  • domid — the Id of the domain we're operating on. Gotta know which irqdomain we're in, iykyk. 🌈
  • first — index to start freeing from, and it's inclusive (so yes, first itself gets freed, bestie). 🌸
  • last — the last index to be freed, also inclusive. So the range really is first through last, both ends counted. 🎀
Quick vibe check on those two: inclusive on both sides. Don't be out here assuming off-by-one shenanigans — free the whole span from first to last, ends included. 🔥

👑 SEE ALSO 👑

Kernel file ./kernel/irq/msi.c, plus a whole friend group of related functions and structs:

That's the whole squad, no notes. 💜

And that's the page!! 🧚 Sending you off with the source deets: this one lives under ./kernel/irq and it's dated October 2026. Slay, go free some descriptors responsibly. 💅✨🍓

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