Comment # 2 on bug 89164 from Andreas Pokorny

(In reply to Michel Dänzer from comment #1)
> You need to pass the dimensions queried from DRM_CAP_CURSOR_WIDTH and
> DRM_CAP_CURSOR_HEIGHT instead of hardcoding 64. As of CIK, Radeon hardware
> only supports 256x256 hardware cursors.

Yes, but since buffer creation with a smaller size does not fail,
gbm_bo_get_stride should return the right size.