amdgpu_vm_pt_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

✨ amdgpu_vm_pt_alloc ✨

okay bestie, so this is the manual page for amdgpu_vm_pt_alloc(9) from the Kernel API Manual — like, the actual kernel docs, not a vibe. it's a little function in the amdgpu driver and honestly? it's giving "quietly doing the most important job in the room" 💅

🌸 NAME 🌸

amdgpu_vm_pt_alloc — allocate a specific page table. that's it, that's the whole thing. one job, iconic behavior 👑

🎀 SYNOPSIS 🎀

int amdgpu_vm_pt_alloc (struct amdgpu_device *adev , struct amdgpu_vm
*vm , struct amdgpu_vm_pt_cursor *cursor , bool immediate );

so the return type is int (keep an eye on that, it matters later 👀) and it takes four things. four. no more, no less. we love a tidy signature.

🦋 ARGUMENTS 🦋

  • adev — an amdgpu_device pointer. literally just, the device. that's the whole description, she said what she said 💀
  • vm — the VM you're allocating page tables for. your virtual memory bestie 🫶
  • cursor — tells the function which page table to allocate. it's the "where" of it all 📍
  • immediate — a bool; when it's set, you get an immediate update. ✨ now ✨ not later.

🌈 DESCRIPTION 🌈

make sure a specific page table or directory is allocated. that's the whole description, and honestly? it ate. no cap. the function's entire personality is "bestie, is this thing allocated? let me handle it."

⭐ RETURN ⭐

okay so the return value is lowkey the most important part, pay attention 📝

  • 1 — if the page table needed to be allocated (i.e. it wasn't there and this call made it happen)
  • 0 — if the page table was already allocated (nothing to do, we were already slaying)
  • negative errno — if an error occurred 😭 negative errno is never a fun time fr fr
so like, 1 and 0 are both fine — one means "I did a thing", the other means "it was already done". only the negative ones are the red flag 🚩

💜 SEE ALSO 💜

the whole friend group, gathered here. these are the kernel file and the related functions:

and that's the whole page, bestie 🧚💖

this one lives over in ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's the amdgpu_vm_pt_alloc(9) manual page — go forth and allocate responsibly, ily, bye 👋💅🍓

📦 where this page comes from