kernel/linux.git/drivers/gpu/drm/tests, branch v6.12.102

gpu: Move DRM buddy allocator one level up (part two)

2026-08-03T09:17:33+00:00

[ Upstream commit ba110db8e1bc206c13fd7d985e79b033f53bfdea ] Move the DRM buddy allocator one level up so that it can be used by GPU drivers (example, nova-core) that have usecases other than DRM (such as VFIO vGPU support). Modify the API, structures and Kconfigs to use "gpu_buddy" terminology. Adapt the drivers and tests to use the new API. The commit cannot be split due to bisectability, however no functional change is intended. Verified by running K-UNIT tests and build tested various configurations. Signed-off-by: Joel Fernandes Reviewed-by: Dave Airlie [airlied: I've split this into two so git can find copies easier. I've also just nuked drm_random library, that stuff needs to be done elsewhere and only the buddy tests seem to be using it]. Signed-off-by: Dave Airlie Stable-dep-of: 56bc6384314f ("gpu/buddy: bail out of try_harder when alignment cannot be honoured") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/tests: shmem: Set DMA mask to 64-bit in drm_gem_shmem

2026-08-03T09:17:13+00:00

[ Upstream commit b04a248cfa6cfa1e7dc9ce91cb1eb88b1a70dd69 ] drm_gem_shmem_test_purge [1] and drm_gem_shmem_test_get_pages_sgt [2] intermittently fail on ppc64le and s390x CI systems with a DMA address overflow: DMA addr 0x0000000100307000+4096 overflow (mask ffffffff, bus limit 0) WARNING: kernel/dma/direct.h:114 dma_direct_map_sg+0x778/0x920 drm_gem_shmem_test_purge: ASSERTION FAILED at drivers/gpu/drm/tests/drm_gem_shmem_test.c:330 Expected sgt is not error, but is: -5 The call chain leading to the failure is: drm_gem_shmem_test_purge() / drm_gem_shmem_test_get_pages_sgt() drm_gem_shmem_get_pages_sgt() drm_gem_shmem_get_pages_sgt_locked() [drm_gem_shmem_helper.c] dma_map_sgtable() [mapping.c] __dma_map_sg_attrs() dma_direct_map_sg() [direct.c] dma_direct_map_phys() [kernel/dma/direct.h] dma_capable() Checks addr against DMA mask -> FAILS: addr > 0xFFFFFFFF The root cause is that KUnit devices are initialized with a 32-bit DMA mask (DMA_BIT_MASK(32)) in lib/kunit/device.c. On ppc64le and s390x systems with physical memory above 4GB, page allocations can land at addresses that exceed this mask. When drm_gem_shmem_get_pages_sgt() attempts to DMA-map these pages via dma_map_sgtable(), the DMA layer rejects the mapping because the physical address overflows the 32-bit mask. The failure is intermittent because pages may or may not be allocated above 4GB on any given run depend on memory pressure. Fix by setting a 64-bit DMA mask on the device before calling drm_gem_shmem_get_pages_sgt() for all tests, following the same pattern already used in drm_gem_shmem_test_obj_create_private(). [1] https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/2643976103/test_s390x/15128551935/artifacts/jobwatch/logs/recipes/21561049/tasks/220716793/results/1014626315/logs/dmesg.log [2] https://s3.amazonaws.com/arr-cki-prod-trusted-artifacts/trusted-artifacts/2643976103/test_ppc64le/15128551933/artifacts/jobwatch/logs/recipes/21561041/tasks/220716705/results/1014628163/logs/dmesg.log Fixes: 93032ae634d4 ("drm/test: add a test suite for GEM objects backed by shmem") Closes: https://datawarehouse.cki-project.org/issue/5345 Closes: https://datawarehouse.cki-project.org/issue/3184 Assisted-by: Claude:claude-4.6-opus Reviewed-by: Thomas Zimmermann Signed-off-by: José Expósito Link: https://patch.msgid.link/20260703150808.3832-1-jose.exposito89@gmail.com Signed-off-by: Sasha Levin

drm/tests: shmem: Swap names of export tests

2026-03-04T12:21:37+00:00

[ Upstream commit 89f23d42006630dd94c01a8c916f8c648141ad8e ] GEM SHMEM has 2 helpers for exporting S/G tables. Swap the names of the rsp. tests, so that each matches the helper it tests. Signed-off-by: Thomas Zimmermann Fixes: 93032ae634d4 ("drm/test: add a test suite for GEM objects backed by shmem") Cc: dri-devel@lists.freedesktop.org Cc: # v6.8+ Reviewed-by: Boris Brezillon Link: https://patch.msgid.link/20251212160317.287409-2-tzimmermann@suse.de Signed-off-by: Sasha Levin

drm/tests: Fix drm_test_fb_xrgb8888_to_xrgb2101010() on big-endian

2025-08-28T14:31:12+00:00

[ Upstream commit 05663d88fd0b8ee1c54ab2d5fb36f9b6a3ed37f7 ] Fix failures on big-endian architectures on tests cases single_pixel_source_buffer, single_pixel_clip_rectangle, well_known_colors and destination_pitch. Fixes: 15bda1f8de5d ("drm/tests: Add calls to drm_fb_blit() on supported format conversion tests") Signed-off-by: José Expósito Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250630090054.353246-2-jose.exposito89@gmail.com Signed-off-by: Sasha Levin

drm/tests: Do not use drm_fb_blit() in format-helper tests

2025-08-28T14:31:12+00:00

[ Upstream commit 5a4856e0e38109ba994f369962f054ecb445c098 ] Export additional helpers from the format-helper library and open-code drm_fb_blit() in tests. Prepares for the removal of drm_fb_blit(). Only sysfb drivers use drm_fb_blit(). The function will soon be removed from format helpers and be refactored within sysfb helpers. Signed-off-by: Thomas Zimmermann Reviewed-by: José Expósito Acked-by: Maxime Ripard Link: https://lore.kernel.org/r/20250616083846.221396-2-tzimmermann@suse.de Stable-dep-of: 05663d88fd0b ("drm/tests: Fix drm_test_fb_xrgb8888_to_xrgb2101010() on big-endian") Signed-off-by: Sasha Levin

drm/format-helper: Add conversion from XRGB8888 to BGR888

2025-08-28T14:31:11+00:00

[ Upstream commit c9043706cb11b8005e145debe0a3211acd08e2c1 ] Add XRGB8888 emulation helper for devices that only support BGR888. Signed-off-by: Kerem Karabay Signed-off-by: Aditya Garg Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/9A67EA95-9BC7-4D56-8F87-05EAC1C166AD@live.com Stable-dep-of: 05663d88fd0b ("drm/tests: Fix drm_test_fb_xrgb8888_to_xrgb2101010() on big-endian") Signed-off-by: Sasha Levin

drm/tests: Fix endian warning

2025-08-28T14:31:11+00:00

[ Upstream commit d28b9d2925b4f773adb21b1fc20260ddc370fb13 ] When compiling with sparse enabled, this warning is thrown: warning: incorrect type in argument 2 (different base types) expected restricted __le32 const [usertype] *buf got unsigned int [usertype] *[assigned] buf Add a cast to fix it. Fixes: 453114319699 ("drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_xrgb2101010()") Signed-off-by: José Expósito Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250630090054.353246-1-jose.exposito89@gmail.com Signed-off-by: Sasha Levin

drm/tests: shmem: Fix memleak

2025-05-09T07:50:43+00:00

[ Upstream commit 48ccf21fa8dc595c8aa4f1d347b593dcae0727d0 ] The drm_gem_shmem_test_get_pages_sgt() gets a scatter-gather table using the drm_gem_shmem_get_sg_table() function and rightfully calls sg_free_table() on it. However, it's also supposed to kfree() the returned sg_table, but doesn't. This leads to a memory leak, reported by kmemleak. Fix it by adding a kunit action to kfree the sgt when the test ends. Reported-by: Philipp Stanner Closes: https://lore.kernel.org/dri-devel/a7655158a6367ac46194d57f4b7433ef0772a73e.camel@mailbox.org/ Fixes: 93032ae634d4 ("drm/test: add a test suite for GEM objects backed by shmem") Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20250408140758.1831333-1-mripard@kernel.org Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin

drm/tests: probe-helper: Fix drm_display_mode memory leak

2025-04-20T08:15:07+00:00

[ Upstream commit 8b6f2e28431b2f9f84073bff50353aeaf25559d0 ] drm_analog_tv_mode() and its variants return a drm_display_mode that needs to be destroyed later one. The drm_test_connector_helper_tv_get_modes_check() test never does however, which leads to a memory leak. Let's make sure it's freed. Reported-by: Philipp Stanner Closes: https://lore.kernel.org/dri-devel/a7655158a6367ac46194d57f4b7433ef0772a73e.camel@mailbox.org/ Fixes: 1e4a91db109f ("drm/probe-helper: Provide a TV get_modes helper") Reviewed-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250408-drm-kunit-drm-display-mode-memleak-v1-7-996305a2e75a@kernel.org Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin

drm/tests: modes: Fix drm_display_mode memory leak

2025-04-20T08:15:07+00:00

[ Upstream commit d34146340f95cd9bf06d4ce71cca72127dc0b7cd ] drm_analog_tv_mode() and its variants return a drm_display_mode that needs to be destroyed later one. The drm_modes_analog_tv tests never do however, which leads to a memory leak. Let's make sure it's freed. Reported-by: Philipp Stanner Closes: https://lore.kernel.org/dri-devel/a7655158a6367ac46194d57f4b7433ef0772a73e.camel@mailbox.org/ Fixes: 4fcd238560ee ("drm/modes: Add a function to generate analog display modes") Reviewed-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250408-drm-kunit-drm-display-mode-memleak-v1-5-996305a2e75a@kernel.org Signed-off-by: Maxime Ripard Signed-off-by: Sasha Levin