drm: Remove DRIVER_GEM_GPUVA feature flag

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The DRIVER_GEM_GPUVA feature flag is currently only used to control two
behaviors within the DRM core:
- calling  drm_gem_gpuva_init() during
  GEM object initialization
- creating the "gpuvas" debugfs entry

drm_gem_gpuva_init() is a plain INIT_LIST_HEAD() and therefore is cheap
to run for every GEM object. The DRM_DEBUGFS_GPUVA_INFO macro is only
referenced by GPU-VA capable drivers, so clearing the feature bit does
not cause any unrelated drivers to get the "gpuvas" debugfs node. The
flag doesn't have any relevant purpose (e.g. gating ioctl handlers or MM
logic) and doesn't provide any practical benefit.

Remove the flag definition and drop it from all drivers that use it,
call drm_gem_gpuva_init() unconditionally and clear the driver features
bit in DRM_DEBUGFS_GPUVA_INFO.

Signed-off-by: Laura Nao <laura.nao@collabora.com>
Acked-by: Rob Clark <rob.clark@oss.qualcomm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20260421084701.24227-1-laura.nao@collabora.com
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>

...

This commit is contained in:

Laura Nao 2026-04-21 10:47:01 +02:00 • committed by Boris Brezillon

parent 351af554ed

commit 21fcb222f0

9 changed files with 6 additions and 19 deletions

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3

drivers/gpu/drm/drm_gem.c

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2

drivers/gpu/drm/imagination/pvr_drv.c

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2

drivers/gpu/drm/msm/msm_drv.c

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1

drivers/gpu/drm/nouveau/nouveau_drm.c

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2

drivers/gpu/drm/panthor/panthor_drv.c

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4

drivers/gpu/drm/xe/xe_device.c

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2

include/drm/drm_debugfs.h

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6

include/drm/drm_drv.h

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3

include/drm/drm_gem.h

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