address_to_pte_idx(9)

✨ address_to_pte_idx(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 this one's a lil function called address_to_pte_idx and honestly? it does exactly one thing and it does it slayfully — it splits an IOVA into its L1 and L2 page table indices. that's it. that's the whole vibe. 🎀

---

🌸 NAME 🌸

address_to_pte_idx — split IOVA into L1 and L2 page table indices

like, literally what it says on the tin, no cap 🫶

---

🦋 SYNOPSIS 🦋

void address_to_pte_idx (unsigned long iova , u32 *l1pt_idx , u32
*l2pt_idx );

it's a void function so don't go looking for a return value, she gives you nothing back directly — the tea comes out through the pointers 👑

---

💖 ARGUMENTS 💖

• iova — the IOVA you wanna split. this is the main character of the whole operation ✨
• l1pt_idx — output spot for the L1 page table index. she gets written to, periodt.
• l2pt_idx — output for the L2 page index. also gets written to. also iconic. 💅

ngl both l1pt_idx and l2pt_idx are outputs, so pls pls pls hand over valid u32 * pointers or the whole thing is giving chaos 😭

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/staging/media/ipu3/ipu3-mmu.c — go read the source, iykyk 🧚
• imgu_mmu_tlb_invalidate(9)
• imgu_mmu_set_halt(9)
• imgu_mmu_alloc_page_table(9)
• imgu_mmu_free_page_table(9)
• imgu_mmu_map(9)
• imgu_mmu_map_sg(9)
• imgu_mmu_unmap(9)
• imgu_mmu_init(9)
• imgu_mmu_exit(9)

like the whole imgu_mmu friend group fr fr 💜

---

okay that's the page!! mwah 💋 this lil manpage came from ./drivers/staging/media/ipu3 and it's dated October 2026 — screenshot it, cite it, put it on your fridge, whatever bestie, it's yours now 🎀💖✨