sdma_v3_0_ri...mit_vm_flush(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v3_0_ring_emit_vm_flush(9) — like, the whole vibe 🦋

okay so bestie, welcome to the Kernel API Manual page for sdma_v3_0_ri...mit_vm_flush(9) — yes the title is literally truncated in the header, that's just how it's filed, don't come for me 😭. Sit down, grab a strawberry 🍓, we're learning about a VM flush that rides on sDMA.

✨ NAME ✨

sdma_v3_0_ring_emit_vm_flush — cik vm flush using sDMA. that's the whole assignment, no cap 💅

🌸 SYNOPSIS 🌸

void sdma_v3_0_ring_emit_vm_flush (struct amdgpu_ring *ring , unsigned
vmid , uint64_t pd_addr );

like, it returns void so it doesn't even give you a value back. it's giving "I did the thing, you're welcome" energy 🎀

🫶 ARGUMENTS 🫶

  • ring — an amdgpu_ring pointer. yeah. the ring. the main character 👑
  • vmid — the vmid number to use. that's the number. use it 🔢
  • pd_addr — the address. just... the address. iconically vague but we move ⭐

💖 DESCRIPTION 💖

So what does it actually do, bestie? Two things, and they're both important:

  1. Update the page table base ✨
  2. Flush the VM TLB using sDMA (VI) 🔥

that's it. that's the function. lowkey elegant, highkey essential. periodt 💜

🦋 SEE ALSO 🦋

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c — go read it if you're feeling feral 🙈

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

like, that's the entire squad. iykyk 🌈

and that's the page!! 🎀 source: ./drivers/gpu/drm/amd/amdgpu — dated October 2026. mwah, go touch some registers bestie, ily 💖✨🧚

📦 where this page comes from