Hi, On Tue, 21 Apr 2026 10:47:01 +0200 Laura Nao <[email protected]> wrote:
> 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 <[email protected]> > --- > drivers/gpu/drm/drm_gem.c | 3 +-- > drivers/gpu/drm/imagination/pvr_drv.c | 2 +- > drivers/gpu/drm/msm/msm_drv.c | 2 -- > drivers/gpu/drm/nouveau/nouveau_drm.c | 1 - > drivers/gpu/drm/panthor/panthor_drv.c | 2 +- > drivers/gpu/drm/xe/xe_device.c | 2 +- > include/drm/drm_debugfs.h | 2 +- > include/drm/drm_drv.h | 6 ------ > include/drm/drm_gem.h | 3 --- > 9 files changed, 5 insertions(+), 18 deletions(-) I took the liberty to queue this one to drm-misc-next even though it was lacking R-b/A-b from Nouveau/Pvr maintainers because - it's pretty trivial - it's been posted more than a month ago - we need it to make progress on the Tyr side - if it's broken (I honestly doubt it), we still have a full release cycle to revert Regards, Boris
