drm_gpuvm_init(9)

📦 version 7.3.1, in nixpkgs unstable

✨ drm_gpuvm_init(9) ✨

okay bestie, welcome to the Kernel API Manual 💅 this one is drm_gpuvm_init — the function that literally brings your &drm_gpuvm to life. no cap, it's the setup step, so pay attention 🫶

💖 NAME 💖

drm_gpuvm_init — initialize a &drm_gpuvm 🌸

🎀 SYNOPSIS 🎀

void drm_gpuvm_init (struct drm_gpuvm *gpuvm , const char *name , enum
drm_gpuvm_flags flags , struct drm_device *drm , struct drm_gem_object
*r_obj , u64 start_offset , u64 range , u64 reserve_offset , u64
reserve_range , const struct drm_gpuvm_ops *ops );

🦋 ARGUMENTS 🦋

like, ten whole parameters. she's high-maintenance but iconic 👑

  • gpuvm — pointer to the drm_gpuvm you're initializing. this is the main character of the whole function ✨
  • name — the name of the GPU VA space 🏷️
  • flags — the drm_gpuvm_flags for this GPUVM 🚩
  • drm — the drm_device this VM resides in 🖥️
  • r_obj — the resv drm_gem_object providing the GPUVM's common dma_resv 🔒
  • start_offset — the start offset of the GPU VA space 📍
  • range — the size of the GPU VA space 📏
  • reserve_offset — the start of the kernel reserved GPU VA area 🧚
  • reserve_range — the size of the kernel reserved GPU VA area 🎯
  • ops — drm_gpuvm_ops called on drm_gpuvm_sm_map / drm_gpuvm_sm_unmap 🛠️

🌈 DESCRIPTION 🌈

so basically: the drm_gpuvm must be initialized with this function before use. like, no initialization = no vibes. it's giving mandatory pre-req 💀

⚠️ important bestie alert: note that gpuvm must be cleared to 0 before calling this function. fr fr, zero it out first. and the given name is expected to be managed by the surrounding driver structures — so don't go freeing it all willy-nilly, that's the driver's job 🙈

👑 SEE ALSO 👑

the whole friend group 💜 go read these:

and that's the whole page, bestie 🍓 this lil manual came from ./drivers/gpu/drm, dated October 2026 — so go forth and initialize responsibly 💫 mwah 💋

📦 where this page comes from