amdgpu_gmc_fault_key(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_gmc_fault_key 💅

okay bestie, welcome to the Kernel API Manual (section 9, we're fancy like that) ✨ this little cutie is called amdgpu_gmc_fault_key, and honestly? it's giving tiny function, big job energy. its whole personality is: get a hash key from a vm fault address and a pasid. that's it, that's the vibe 🎀

✨ SYNOPSIS ✨

uint64_t amdgpu_gmc_fault_key (uint64_t addr , uint16_t pasid );

so it takes two things and hands you back a uint64_t. lowkey iconic signature ngl 🫶

🌸 ARGUMENTS 🌸

  • addr — a 48 bit physical address, and it's gotta be page aligned, bestie (with 36 significant bits — that's the part that actually matters, iykyk) 💖
  • pasid — the 16 bit process address space identifier. yes, a whole 16 bits of "which process is this" energy 🦋

🔥 SEE ALSO 🔥

the kernel file lives right here, no cap:

./drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c

and here's the whole friend group, all of them, in order, don't skip anyone 👑

bestie reminder: this is a <purple>kernel API</purple> page, so everything here is C-level, function-signature territory — not your average shell command, fr fr 🌈

and that's the whole page 💀 no extra lore, no hidden options, just address + pasid in, uint64_t out, slay. mwah 💅🌸

signed, sealed, delivered from ./drivers/gpu/drm/amd/amdgpu — October 2026 — amdgpu_gmc_fault_key(9) 💖✨

📦 where this page comes from