amdgpu_multi...helper_begin(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_multi...helper_begin(9) — the Kernel API Manual, but make it make sense

okay so bestie, we're in the Kernel API Manual today and this one is literally called amdgpu_multi_ring_reset_helper_begin. yeah. it's a mouthful. say it three times fast, i dare you 🫶

✨ NAME ✨

amdgpu_multi_ring_reset_helper_begin — bestie's job is to Prepare multiple rings for a reset. that's it, that's the whole vibe 🎀

🌸 SYNOPSIS 🌸

void amdgpu_multi_ring_reset_helper_begin (const u32 ring_type_mask ,
       struct amdgpu_ring *guilty_ring , struct amdgpu_fence *guilty_fence );

look at that signature. she's giving "i take three arguments and i take them seriously" 💅

🦋 ARGUMENTS 🦋

  • ring_type_mask — a Bitmask of affected ring types. so like, which rings are we dragging into this mess 🔥
  • guilty_ring — The ring which is guilty of causing a reset. yeah. this one. this is the one that did it. caught in 4K 💀
  • guilty_fence — The fence which didn't signal on the guilty ring. the fence that ghosted us. rude honestly 🙈

👑 DESCRIPTION 👑

okay so here's the tea ☕ — this helper is Useful when performing a GPU reset method that affects multiple rings at the same time, such as an IP block soft reset. and to make it concrete: For example, a GFX IP block soft reset will affect every graphics and compute queue. every single one. no survivors. 😭

the manual is very clear on this one: This function should be called before such a reset. like, before before. not during, not after. before. periodt ✨

so what does it actually do? it will Prepare the affected rings before the reset, make sure to minimize collateral damage, and backup the contents of the rings. minimize collateral damage is such a main character goal honestly 🌈. then, once all that's handled, Then the caller can call the actual HW specific reset function. the actual reset is somebody else's problem, we just do the prep 🫶

and after? After the reset is complete, the caller should then call amdgpu_multi_ring_reset_helper_end to restore the rings. yup, there's a matching _end. you don't just leave the rings hanging, that's not the vibe 💜

ngl the whole thing is a two-parter: _begin sets you up, _end cleans up. don't skip the second one bestie, the rings need to be restored fr fr 😤

🎀 SEE ALSO 🎀

Kernel file: ./drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c — go read the source, iykyk 💖

the whole friend group, in order:

that's the page babes! brought to you by ./drivers/gpu/drm/amd/amdgpu and dated October 2026 — slay, see you in the next reset 💅💖⭐

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