dm_test_get_cursor_position(9)

💅 dm_test_get_cursor_position(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — yes, the Kernel API Manual, we're in the big leagues now 🎀 — and today's main character is dm_test_get_cursor_position(9). It's a KUnit test, it's giving "small but mighty", and honestly it's obsessed with making sure your cursor behaves. let's get into it 🦋

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✨ NAME ✨

dm_test_get_cursor_position — the vibe check that verifies cursor clipping and off-screen handling 💅

no cap, that's literally the whole job. clipping? handled. off-screen? handled. cursor shenanigans? not on her watch 👑

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🌸 SYNOPSIS 🌸

void dm_test_get_cursor_position (struct kunit *test );

that's it, that's the signature 🫶 she takes one argument and returns void. lowkey iconic of her.

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🎀 ARGUMENTS 🎀

• test — the KUnit test context 💖 it's the little ✨context✨ that makes the whole test run possible. every KUnit test needs one, and this one's hers.

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🦋 DESCRIPTION 🦋

so what does she actually do, you ask? she verifies whether these three things work:

1. cursor clipping
2. hotspot adjustment
3. off-screen disable behavior

that's the entire assignment and she ate 🔥 no extra lore, no side quests — just three behaviors getting their moment under the test lights ⭐

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🌈 SEE ALSO 🌈

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

• Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c

and now for the friend group 😭 the whole squad of sibling tests, in the order the page lists them:

• dm_test_plane_is_video_format_known_video(9), dm_test_fill_blending_defaults(9), dm_test_fill_blending_premulti_alpha_format(9), dm_test_fill_blending_coverage_alpha_format(9), dm_test_fill_blending_global_alpha(9), dm_test_modifier_has_dcc(9), dm_test_modifier_gfx9_swizzle_mode(9)
• dm_test_get_plane_formats(9), dm_test_get_plane_modifiers(9), dm_test_fill_dc_scaling_info(9), dm_test_get_min_max_dc_plane_scaling(9), dm_test_format_mod_supported(9), dm_test_fill_gfx12_plane_attributes_from_modifiers(9), dm_test_fill_gfx9_plane_attributes_from_modifiers(9)
• dm_test_helper_check_state_viewport_reject(9), dm_test_validate_dcc_disabled_returns_success(9), dm_test_validate_dcc_video_non_gfx12_fails(9), dm_test_validate_dcc_missing_cap_func_fails(9), dm_test_validate_dcc_cap_callback_fails(9), dm_test_validate_dcc_not_capable_fails(9), dm_test_validate_dcc_success_and_scan_mapping(9)
• dm_test_validate_dcc_independent_64b_mismatch_fails(9), dm_test_add_modifier_appends_value(9), dm_test_add_modifier_grows_capacity(9), dm_test_add_modifier_noop_when_mods_null(9), dm_test_fill_gfx9_tiling_info_from_device_pre_10_3(9), dm_test_fill_gfx9_tiling_info_from_device_10_3_plus(9), dm_test_fill_gfx9_tiling_info_from_modifier_linear(9)
• dm_test_fill_gfx9_tiling_info_from_modifier_pre_nv(9), dm_test_fill_gfx9_tiling_info_from_modifier_nv(9), dm_test_get_format_info(9), dm_test_fill_blending_global_alpha_dcn42(9), dm_test_get_plane_formats_overlay_universal_cap(9), dm_test_get_plane_modifiers_gfx9(9), dm_test_get_plane_modifiers_rv(9)
• dm_test_get_plane_modifiers_rv_constant_encode(9), dm_test_get_plane_modifiers_gfx10_1(9), dm_test_get_plane_modifiers_gfx10_3(9), dm_test_get_plane_modifiers_gfx11_64k_first(9), dm_test_get_plane_modifiers_gfx11_256k_first(9), dm_test_get_plane_modifiers_gfx12(9), dm_test_fill_gfx9_plane_attributes_dcc(9)
• dm_test_fill_gfx9_plane_attributes_validate_fails(9), dm_test_fill_gfx9_plane_attributes_dcc_rbplus_64b_no_128bcl(9), dm_test_fill_gfx9_plane_attributes_dcc_rbplus_128b(9), dm_test_fill_gfx9_plane_attributes_dcc_rbplus_unconstrained(9), dm_test_fill_gfx9_plane_attributes_dcc_gfx9_64b(9), dm_test_fill_gfx9_plane_attributes_dcc_gfx9_unconstrained(9), dm_test_fill_gfx12_plane_attributes_block0(9)
• dm_test_fill_gfx12_plane_attributes_block_unconstrained(9), dm_test_fill_gfx12_plane_attributes_validate_fails(9), dm_test_fill_plane_buffer_attributes_video(9), dm_test_fill_plane_buffer_attributes_gfx12(9), dm_test_get_min_max_dc_plane_scaling_fp16(9), dm_test_helper_check_state_small_viewport_width(9), dm_test_helper_check_state_small_viewport_height(9)
• dm_test_helper_check_state_bottom_clipped_height(9), dm_test_helper_check_state_scaling_caps(9), dm_test_fill_dc_scaling_info_nv12_dcn1x(9), dm_test_fill_dc_scaling_info_plane_caps(9), dm_test_get_cursor_position_bad_size(9), dm_test_format_mod_supported_d_swizzle_reject(9), dm_test_atomic_async_check_rejects(9)
• dm_test_atomic_async_check_overlay_cursor(9), dm_test_atomic_check_no_dc_state(9), dm_test_atomic_check_missing_crtc_state(9), dm_test_atomic_check_helper_failure(9), dm_test_atomic_check_color_pipeline_conflict(9), dm_test_atomic_check_scaling_failure(9), dm_test_panic_flush_no_dc_state(9)
• dm_test_plane_reset_initializes_state(9), dm_test_plane_duplicate_state_copies_fields(9), dm_test_plane_destroy_state_minimal(9)

like, that is a lot of tests and she's friends with all of them 🫶💜

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quick reminder bestie: the (9) on every one of those means "section 9, kernel API" — that's just how the manual rolls, iykyk 📚✨

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and that's the whole page!! source: ./drivers/gpu/drm/amd/display/..., dated October 2026, filed under dm_test_get_cursor_position(9) — love her, mean it, periodt 💖🎀🦋