sdma_v4_0_vm_write_pte(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_vm_write_pte(9) — like, the Kernel API Manual page you actually wanna read ✨

okay so bestie, welcome to the group chat, this is a page straight out of the Kernel API Manual and it's all about one very specific little function. pull up a chair 🎀

✨ NAME ✨

sdma_v4_0_vm_write_pte — it updates PTEs by writing them manually. that's the whole vibe. no cap.

🌸 SYNOPSIS 🌸

void sdma_v4_0_vm_write_pte (struct amdgpu_ib *ib , uint64_t pe ,
uint64_t value , unsigned count , uint32_t incr );

she takes five args and returns literally nothing (void), she's just here to do the work 💅

🦋 ARGUMENTS 🦋

  • ib — the indirect buffer you're filling with commands. this is her canvas, her stage, her main character moment.
  • pe — the addr of the page entry. yes, addr, we're being casual about it.
  • value — the dst addr to write into pe.
  • count — how many page entries we're updating. the more the merrier, lowkey.
  • incr — increase the next addr by incr bytes. so she steps forward by incr each time, iconic behavior honestly.

🔥 DESCRIPTION 🔥

Update PTEs by writing them manually using sDMA (VEGA10) 💀 that's it, that's the whole description. short and slay. she's not gonna over-explain herself, she's got page tables to write.

👑 SEE ALSO 👑

the kernel file she lives in, for when you wanna go read the source like the academic icon you are:

./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

and her whole friend group, fr fr — every single one of these:

and that's the tea 🍓 this little beauty hangs out in ./drivers/gpu/drm/amd/amdgpu, the page is dated October 2026, and it's filed under sdma_v4_0_vm_write_pte(9) 💜 go forth and write those PTEs manually, bestie, i believe in you 🫶✨

📦 where this page comes from