gfx_v7_0_get_hdp_flush_mask(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gfx_v7_0_get_hdp_flush_mask — a whole manual page, bestie

okay so this is from the Kernel API Manual (yes, the kernel really said "let me write docs" and honestly? iconic of it). Bestie, we're talking about gfx_v7_0_get_hdp_flush_mask and I'm gonna walk you through it like we're texting at 2am. 🫶

✨ NAME ✨

gfx_v7_0_get_hdp_flush_mask — literally just get the reference and mask for HDP flush. That's the whole gig. No cap. 🎀

🌸 SYNOPSIS 🌸

void gfx_v7_0_get_hdp_flush_mask (struct amdgpu_ring *ring , uint32_t
*ref_and_mask , uint32_t *reg_mem_engine );

it returns void, so like… it gives you nothing back directly, it gives you stuff through the pointers. very "i don't text first but i'll show up" energy. 💀

🦋 ARGUMENTS 🦋

bestie there are exactly three and every one of them matters, don't skip:

  • ring — the amdgpu_ring structure holding ring information. it's the main character here, it knows things. 👑
  • ref_and_mask — pointer to store the reference and mask. that's it, that's the whole job. it's where the answer goes. ✨
  • reg_mem_engine — pointer to store the register memory engine. also where an answer goes. two little output buckets, slay. 🪣

💜 DESCRIPTION 💜

so what does it do? Calculates the reference and mask for HDP flush based on the ring type and me. that's the description, verbatim-ish, and honestly? it ate. 🔥

like, ring type and me walk in, and this function does the math and drops the reference + mask where you told it to. no drama, no side quests. periodt. 💅

ngl this one's short — it's a helper, not a hero's journey. but every hero's journey needs helpers, iykyk. 🌈

🧚 SEE ALSO 🧚

go read the source, bestie, it's right here:

  • Kernel file ./drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

and the whole friend group (literally all of them, I'm not skipping a single one, we don't do that here):

and that's the page!! 🎀 it lives in ./drivers/gpu/drm/amd/amdgpu, it's dated October 2026, and it's part of the Kernel API Manual — so like, the kernel is a published author now. obsessed. go forth and flush your HDP, bestie. 💖✨🦋

📦 where this page comes from