After switching to drm_gpuvm, the IOMMU becomes a requirement even for KMS-only devices (e.g. allocating a buffer for DSI commands now also requires the IOMMU / GPUVM). Disallow non-IOMMU configurations.
Note: MDP4 patches were compile-tested only. Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@oss.qualcomm.com> --- Dmitry Baryshkov (3): drm/msm/mdp4: stop supporting no-IOMMU configuration drm/msm: stop supporting no-IOMMU configuration drm/msm/mdp4: use msm_kms_init_vm() instead of duplicating it drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 27 +++++---------------------- drivers/gpu/drm/msm/msm_kms.c | 4 ++-- 2 files changed, 7 insertions(+), 24 deletions(-) --- base-commit: 8290d37ad2b087bbcfe65fa5bcaf260e184b250a change-id: 20250706-msm-no-iommu-c15212a0e7ac Best regards, -- With best wishes Dmitry