iopt_pages_fill_from_xarray(9)

📦 version 7.3.1, in nixpkgs unstable

💅 iopt_pages_fill_from_xarray(9)

okay so bestie, welcome to the Kernel API Manual — this one's a lil function called iopt_pages_fill_from_xarray, and honestly? she's the fast lane. 🏎️✨

🌸 NAME

iopt_pages_fill_from_xarray — the fast path for reading PFNs 👑

🎀 SYNOPSIS

void iopt_pages_fill_from_xarray (struct iopt_pages *pages , unsigned
long start_index , unsigned long last_index , struct page **out_pages );

that's the whole vibe. returns void, so no "did it work" drama — she just does the thing. 💅

🦋 ARGUMENTS

  • pages — the pages we're acting on, aka the main character of this whole operation 🫶
  • start_index — the first page index in the range, like where the party starts 🎉
  • last_index — the last page index in the range, the closing time bestie 🌙
  • out_pages — the output array where the pages get returned, the little gift bag 🎁

✨ DESCRIPTION

so here's the tea ☕ — you can call this if the caller is holding a refcount on an iopt_pages_access that's known to have already been filled. when that's the case, she doesn't have to do all the slow work: she quickly reads the pages directly from the xarray. like, no cap, straight to the point. ⚡

and where does this fit? it's part of the SW iommu interface to read pages for in-kernel use. iykyk 💜

🔥 SEE ALSO

kernel file ./drivers/iommu/iommufd/pages.c — and here's the whole friend group, all of them linked up:

okay that's the page!! 💖 this lil baddie lives in ./drivers/iommu/iommufd, and the version/date tag on her fit says October 2026. go read some PFNs, bestie — slay responsibly 🧚‍♀️🌈⭐

📦 where this page comes from