sdma_v7_1_vm_write_pte(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v7_1_vm_write_pte — like, the kernel API manual, bestie ✨

Okay so this is a page from the Kernel API Manual (section 9, the kernel-y one 🧚) and it's all about <pink>sdma_v7_1_vm_write_pte</pink> — "update PTEs by writing them manually". Slay. Let's get into it 💖

✨ NAME ✨

sdma_v7_1_vm_write_pte — update PTEs by writing them manually. That's it, that's the whole vibe 🎀

🦋 SYNOPSIS 🦋

void sdma_v7_1_vm_write_pte (struct amdgpu_ib *ib , uint64_t pe ,
       uint64_t value , unsigned count , uint32_t incr );

Not me copying this character for character because that's literally the rule 😭 — returns void, takes five args, no cap.

🌸 ARGUMENTS 🌸

Okay bestie, here's the group chat roster of parameters, and every single one matters:

  • ib — indirect buffer to fill with commands. This is the lil' buffer you're stuffing full of instructions 🫶
  • pe — addr of the page entry. The page entry's address, periodt.
  • value — dst addr to write into pe. So like, the destination address that gets written into that page entry 💅
  • count — number of page entries to update. How many we doing? This many.
  • incr — increase next addr by incr bytes. Stepping through them the whole time ⭐

🔥 DESCRIPTION 🔥

Update PTEs by writing them manually using sDMA.

That's the tea ☕ — manual PTE writing, sDMA doing the work, iconic behaviour only 👑 No sneaky extra steps, no guessing, we just say what the page says 💀

Lowkey a whole vibe check: this is a void function, so nothing comes back to you. It just does the thing to ib. 🦋

🌈 SEE ALSO 🌈

The kernel file, fr fr:

  • ./drivers/gpu/drm/amd/amdgpu/sdma_v7_1.c

And the whole friend group of sibling functions — all of them, not skipping a single one, because we do not leave the girls behind 💜:

Okay and for the cute sign-off 🎀 — this lil' page lives under the source path ./drivers/gpu/drm/amd/amdgpu, and it's dated October 2026. So yeah, future vibes, kernel API manual, sdma_v7_1_vm_write_pte(9) girlie signing off 💖✨🦋 periodt.

📦 where this page comes from