pvr_gem_object_vmap(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pvr_gem_object_vmap(9) — like, the Kernel API Manual one, bestie 🎀

okay so. this is pvr_gem_object_vmap, section 9 of the Kernel API Manual, and it's genuinely one of those little functions that does exactly what it says on the tin — no cap. ✨

🌸 NAME 🌸

pvr_gem_object_vmap — map a PowerVR GEM object into CPU virtual address space. that's it. that's the whole vibe. 🦋

⭐ SYNOPSIS ⭐

void * pvr_gem_object_vmap (struct pvr_gem_object *pvr_obj );

literally one argument, and it hands you back a void *. short king behavior honestly. 👑

🍓 ARGUMENTS 🍓

  • pvr_obj — the target PowerVR GEM object. like, the one you want mapped. this is the girl. 💖

🔥 DESCRIPTION 🔥

so you call this bad boy and it maps your object into CPU virtual address space. slay.

but — and this is the important part, so listen up — once the caller is finished with the CPU mapping, they must call pvr_gem_object_vunmap on pvr_obj. must. not "should", not "if you feel like it". must. clean up after yourself, bestie, the kernel is not your mom. 🧹💀

and if pvr_obj is CPU-cached, dma_sync_sgtable_for_cpu gets called to make sure the CPU mapping is consistent. iconic consistency check behavior, honestly. it's giving "i got you". 🫶

🌈 RETURN 🌈

here's what you can get back:

  • a pointer to the CPU mapping on success — periodt, we love a win 💅
  • -ENOMEM if the mapping fails 😭
  • any error encountered while attempting to acquire a reference to the backing pages for pvr_obj — yeah, if that reference grab goes sideways you get whatever error came out of it, no filter 🙈

🦋 SEE ALSO 🦋

kernel file ./drivers/gpu/drm/imagination/pvr_gem.c — that's where the source lives, go read it iykyk 📖

the whole friend group fr fr, go say hi 🌸

ok real talk — if you take one thing from this page: vmap and vunmap are a package deal. don't leave your mapping hanging, that's not main character energy. 🎀

and that's the tea ☕ from ./drivers/gpu/drm/imagination, October 2026, in the Kernel API Manual — mwah, take care of her 💜✨🧚‍♀️

📦 where this page comes from