amdgpu_device_mm_access(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_device_mm_access — access vram by MM_INDEX/MM_DATA ✨

okay so bestie, welcome to the amdgpu_device_mm_access(9) page from the Kernel API Manual 🫶 this one is literally all about poking at vram through MM_INDEX/MM_DATA, and we're gonna get you comfy with it, no cap.

🌸 SYNOPSIS 🌸

void amdgpu_device_mm_access (struct amdgpu_device *adev , loff_t pos ,
       void *buf , size_t size , bool write );

✨ ARGUMENTS ✨

  • adev — an amdgpu_device pointer 💖 like, the GPU we're talking to, periodt.
  • pos — offset of the buffer in vram 🎀 it's giving "where in vram are we hanging out today".
  • buf — virtual address of the buffer in system memory 🦋 the system-side buddy for the data.
  • size — read/write size, and heads up bestie: sizeof(buf) must > size 🌈 don't fumble this one, fr fr.
  • write — true means write to vram, otherwise it's read from vram 💅 simple as that iykyk.

👑 SEE ALSO 👑

the kernel file is literally living at ./drivers/gpu/drm/amd/amdgpu/amdgpu_device.c 📂 and here's the whole squad of related pages — obsessed with how many there are, honestly:

aaaaand that's the whole page, bestie 🎀 this cutie came from ./drivers/gpu/drm/amd/amdgpu in the October 2026 edition of the Kernel API Manual, mwah 💖 go forth and slay your vram access 💅✨

📦 where this page comes from