dm_test_get_...1_256k_first(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_get_plane_modifiers_gfx11_256k_first(9) 💅

okay so welcome to the Kernel API Manual bestie, and buckle up because this page is about one (1) extremely specific little test function and it's gonna be delicious ✨

🎀 NAME 🎀

dm_test_get_plane_modifiers_gfx11_256k_first — the icon that verifies GFX11 large-pipe order 🫶

✨ SYNOPSIS ✨

void dm_test_get_plane_modifiers_gfx11_256k_first (struct kunit *test );

that's it. that's the whole signature. she's short, she's sweet, she's a void function, no return value, we love a low-maintenance queen 👑

🦋 ARGUMENTS 🦋

  • test — the KUnit test context. that's her little backstage pass, the whole test framework vibe lives in there 💖

🌸 DESCRIPTION 🌸

okay so here's the tea 🍓 this test verifies whether GFX11 modifier generation prefers 256K_R_X when more than 16 pipes are reported by GB_ADDR_CONFIG.

like, the whole entire point of the function is checking that priority. if the pipe count goes over 16, does 256K_R_X get the main character energy it deserves? this test says yes and then checks. no cap 💅

ngl it's a super narrow little check but that's literally the job — one behaviour, verified, done, slay.

🔥 SEE ALSO 🔥

she has so many friends, it's giving group chat with 73 members and every single one is invited 😭 here's the whole roster, exactly as it is:

Kernel file iykyk, here's where she actually lives:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c

and that's the whole page bestie, go forth and verify those large-pipe modifiers 💜

source vibe: ./drivers/gpu/drm/amd/display/... · dated October 2026 · manual: dm_test_get_...1_256k_first(9) 🎀✨ no cap, that's the sign-off 🌈🫶

📦 where this page comes from