amdgpu_device_vram_access(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_device_vram_access(9) — like, the whole Kernel API Manual page, bestie ✨

okay so picture this: it's a Kernel API Manual page, the star of the show is amdgpu_device_vram_access(9), and she does exactly one thing but she does it flawlessly — she reads or writes a buffer in vram. main character energy, no notes. 🫶

🌸 NAME 🌸

amdgpu_device_vram_access — read/write a buffer in vram 💖

✨ SYNOPSIS ✨

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

like yes that's the whole signature, she's not hiding anything, she's literally just vibing in one line (okay two, the formatting spilled, we don't judge 🎀).

🦋 ARGUMENTS 🦋

  • adev — an amdgpu_device pointer. your device handle, your ride or die, the whole reason we're here 💫
  • pos — offset of the buffer in vram. like, where in vram the buffer lives. location check, iykyk 📍
  • buf — virtual address of the buffer in system memory. the system-memory side of the operation, the other half of the friendship bracelet 🤝
  • size — read/write size, and hear me out: sizeof(buf) must > size. not "greater than or equal", bestie, strictly greater. the way that's non-negotiable 😭
  • write — true means write to vram, otherwise it's read from vram. a little boolean doing double duty, an icon honestly 👑
⚠️ real talk: sizeof(buf) must be greater than size. do not fumble this, do not round it, do not "it's probably fine" it. it is not fine. 🙈

💜 SEE ALSO 💜

Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_device.c — that's her home address, the source file she lives in 🏠

and now the extended friend group, our group chat basically, every single one of them, present and accounted for, none left on read:

that's the whole roster, every single (9), slay 🧚

and that's the page!! 🍓 before you go, tiny sign-off: this cutie came out of ./drivers/gpu/drm/amd/amdgpu (that's the source, that's where she's from 💅) and the date on it is October 2026. periodt. see you in the next manpage, bestie 😭💖

📦 where this page comes from