drm_gpusvm_init_pages(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_gpusvm_init_pages(9) — a Kernel API Manual moment

okay so bestie, welcome to the drm_gpusvm_init_pages(9) page, straight out of the Kernel API Manual. this one is short and sweet but like, crucial — it's the little setup ritual you gotta do before anything else vibes with your pages object. ✨

🌸 NAME 🌸

drm_gpusvm_init_pages — Initialize a freshly allocated drm_gpusvm_pages

like literally, it's the "congrats on your new allocation, now make it official" function. 🎀

💖 SYNOPSIS 💖

void drm_gpusvm_init_pages (struct drm_gpusvm_pages *svm_pages , struct
drm_device *drm );

no return value, no drama — just a void and two args. she's lowkey simple like that. 🫶

✨ ARGUMENTS ✨

  • svm_pages — pointer to the drm_gpusvm_pages you're about to initialize. this is your main character, the thing getting set up. 👑
  • drm — the drm_device that will own the DMA mappings for this pages object. basically the parent that's gonna be responsible for it later, ngl. 💜

🔥 DESCRIPTION 🔥

okay so here's the tea 🍓:

drivers that embed one or more drm_gpusvm_pages inside their own range structure have to call this function once on each pages instance — and the timing is not a suggestion, bestie:

after allocation, and before the first drm_gpusvm_get_pages / unmap / free. ⚠️

like, that's the whole rule. do it after you allocate, do it before you touch it with any of those. no cap, that ordering is the vibe check and if you fail it you will be dealing with uninitialized chaos energy. 💀

it's giving "one-time setup ritual," and honestly? she ate. 🔥

🦋 SEE ALSO 🦋

everything in the extended universe, so you can go down the whole rabbit hole, iykyk:

the file:

  • Kernel file ./include/drm/drm_gpusvm.h

the structs and enums (the whole friend group 💅):

  • struct drm_gpusvm_ops(9)
  • struct drm_gpusvm_notifier(9)
  • struct drm_gpusvm_pages_flags(9)
  • struct drm_gpusvm_pages(9)
  • struct drm_gpusvm_range_flags(9)
  • struct drm_gpusvm_range(9)
  • struct drm_gpusvm(9)
  • struct drm_gpusvm_ctx(9)
  • enum drm_gpusvm_scan_result(9)

the functions (the rest of the group chat 😭):

okay that's the whole page! 🌈 sign-off time: this little gem lives under ./include/drm, and it's dated October 2026 in the drm_gpusvm_init_pages(9) era of the kernel docs. go forth and initialize responsibly, bestie 💖✨🎀

📦 where this page comes from