sdma_v4_0_ri...mit_vm_flush(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_ring_emit_vm_flush — vm flush using sDMA ✨

okay so bestie, welcome to the Kernel API Manual 🎀 and honestly? this one's a little baddie. it's sdma_v4_0_ring_emit_vm_flush(9) and she does exactly what her name says. no cap.

🌸 SYNOPSIS 🌸

void sdma_v4_0_ring_emit_vm_flush (struct amdgpu_ring *ring , unsigned
       vmid , uint64_t pd_addr );

it returns void — so like, no return value, she just does the thing and leaves 💅

🦋 ARGUMENTS 🦋

  • ring — an amdgpu_ring pointer. yes bestie, the ring itself, the whole main character 🌈
  • vmid — the vmid number to use. that's the vibe check id fr fr 💜
  • pd_addr — the address. that's it, that's the address 🎀

✨ DESCRIPTION ✨

so what she actually does: she updates the page table base and then flushes the VM TLB using sDMA, specifically for VEGA10 👑 like… she's doing two jobs and eating at both of them, periodt.

ngl that's the whole description, she's not a long-story kind of function 🫶

💖 SEE ALSO 💖

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c — that's her home base 🏠 lowkey iconic.

and here's the whole group chat, everyone she hangs out with (iykyk):

like, look at that roster. absolutely stacked 🔥

and that's the page bestie!! 🧚💖 source/version: ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — mwah, go slay some TLB flushes 💅✨🍓

📦 where this page comes from