pvr_page_ta...et_or_insert(9)

📦 version 7.3.1, in nixpkgs unstable

💖 pvr_page_table_l0_get_or_insert 💖

okay so this is a page from the Kernel API Manual, and bestie, it's lowkey niche but it ate. it's all about grabbing — or making, if you gotta — a level 0 page table out of a specific level 1 page table entry. yep. very demure, very MMU. ✨

🌸 NAME 🌸

pvr_page_table_l0_get_or_insert — retrieves (and optionally inserts, if that's what's needed) a level 0 page table from the specified level 1 page table entry. like, you ask for it, and if it's not there and you said "yeah go ahead," it gets made. iconic behavior honestly 🫶

🦋 SYNOPSIS 🦋

int pvr_page_table_l0_get_or_insert (struct pvr_mmu_op_context *op_ctx ,
bool should_insert );

🎀 ARGUMENTS 🎀

  • op_ctx — the target MMU op context. this is the main character of the function call, everything happens inside it 💅
  • should_insert — marked [IN] in the source, and it's literally the vibe check of the whole function: it specifies whether new page tables should be inserted when empty page table entries are encountered during traversal. yes: insert. no: don't. simple as that, no cap.

⭐ RETURN ⭐

  • 0 on success 🎉

(the other possible outcomes are hangin' out down in DESCRIPTION, keep scrolling bestie 😭)

🔥 DESCRIPTION 🔥

here's where it gets conditional, so stay with me:

if should_insert is false:

  • -ENXIO if a level 0 page table would have been inserted. translation: it would have needed to insert one, you told it not to, so it's a no from it. 💀

if should_insert is true:

  • any error encountered while inserting the level 0 page table. yeah. whatever goes wrong during the insert, that's what you get back. no filter, no wrapping, just the raw error. 🙈

🌈 SEE ALSO 🌈

the kernel file this lives in, and honestly the whole extended friend group:

that's the whole page, periodt 💜 and for the receipts: this one comes from ./drivers/gpu/drm/imagination, dated October 2026. mwah, go touch some page tables bestie 🧚🌸

📦 where this page comes from