amdgpu_vce_validate_bo(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_vce_validate_bo(9) — from the Kernel API Manual, bestie

okay so picture this: it's a kernel API manual page, it's called amdgpu_vce_validate_bo, and it is literally here to make sure not to cross 4GB boundary. that's the whole vibe. that's the assignment. 🎀

✨ NAME ✨

amdgpu_vce_validate_bo — make sure not to cross 4GB boundary

like yes that's the entire name section, she's concise, she's iconic, she said what she said 💅

🌸 SYNOPSIS 🌸

int amdgpu_vce_validate_bo (struct amdgpu_cs_parser *p , struct
amdgpu_ib *ib , int lo , int hi , unsigned int size , int32_t index );

that's the whole signature, no cap — copy it exactly if you're typing it out, bestie 🫶

🦋 ARGUMENTS 🦋

okay so the function takes six things and every single one of them matters, let's go:

  • p — the cs parser. that's the context, the main character of this little story 👑
  • ib — the indirect buffer to use. this is the buffer we're actually working with ✨
  • lo — address of lower dword. yes, lower. not higher. don't mix them up 😭
  • hi — address of higher dword. the other half, the sequel, the hi to your lo 💖
  • size — minimum size. minimum!! not maximum. respect the floor 🔥
  • index — bs/fb index. that's the label, keep it as is, iykyk 🌈

🧚 DESCRIPTION 🧚

Make sure that no BO cross a 4GB boundary.

that's it. that's the whole description. she's short, she's sweet, she's doing the lord's work keeping your buffer objects from straddling that 4GB line. no crossing allowed, periodt. 🚫💀

lowkey the entire point of this function is the 4GB boundary check — if you're here for lore, there is no lore, this is a boundary enforcer and honestly? respect.

⭐ SEE ALSO ⭐

first up, the kernel file herself:

  • ./drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c

and then the whole friend group, the entire vce squad, in order, no one left behind 🫶:

and that's the page, bestie 💜 this one lives in ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 — okay slay, mwah, go keep those BOs away from the 4GB line 🎀✨

📦 where this page comes from