dm_test_dmub...ss_fake_dmub(9)

📦 version 7.3.1, in nixpkgs unstable

okay bestie, welcome to section 9 of the Kernel API Manual — the page is literally called dm_test_dmub...ss_fake_dmub(9) and it's about one single KUnit test that deserves main character energy 💅

✨ NAME ✨

dm_test_dmub_hw_init_success_fake_dmub — the test that checks hw init goes all the way through with a fake DMUB service 🎀

🦋 SYNOPSIS 🦋

void dm_test_dmub_hw_init_success_fake_dmub (struct kunit *test );

🌸 ARGUMENTS 🌸

  • test — the KUnit test context, aka the little group-chat thread this test lives in 🫶

💖 DESCRIPTION 💖

so here's the vibe: you've got fake DMUB callbacks plugged in and framebuffer windows already preallocated (yes, preallocated, she came prepared ✨). With all that set up, the init path should reach DMUB service initialization without ever touching real registers — no cap, that's the whole point of the fake DMUB service. It's giving "test the path, not the hardware" and honestly? obsessed 😭

🔥 SEE ALSO 🔥

Kernel file, bestie — go read it fr fr:

  • ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c

and the whole friend group of sibling tests 👑:

and that's the whole page, bestie 💜 source/version is ./drivers/gpu/drm/amd/display/..., dated October 2026, and it lives under dm_test_dmub...ss_fake_dmub(9). slay, go run your tests 🌈⭐

📦 where this page comes from