To debug display mmu faults, this series introduces a display fault handler similar to the gpu one. This series has been tested on sc7280 chromebook by using triggering a smmu fault by forcing an incorrect stride on the planes. changes since RFC: - move msm_mmu_set_fault_handler() to msm_kms_init_aspace - make msm_kms_fault_handler return -ENOSYS - use msm_disp_snapshot_state() instead of msm_disp_snapshot_state_sync() because smmu fault handler should not sleep - add a rate limiter for the snapshot to avoid spam Abhinav Kumar (5): drm/msm: register a fault handler for display mmu faults drm/msm/iommu: rename msm_fault_handler to msm_gpu_fault_handler drm/msm/iommu: introduce msm_iommu_disp_new() for msm_kms drm/msm: switch msm_kms to use msm_iommu_disp_new() drm/msm/dpu: rate limit snapshot capture for mmu faults drivers/gpu/drm/msm/msm_iommu.c | 32 +++++++++++++++++++++++++++++--- drivers/gpu/drm/msm/msm_kms.c | 19 ++++++++++++++++++- drivers/gpu/drm/msm/msm_kms.h | 3 +++ drivers/gpu/drm/msm/msm_mmu.h | 1 + 4 files changed, 51 insertions(+), 4 deletions(-) -- 2.44.0
