On Fri, Jun 28, 2024 at 02:48:42PM GMT, Abhinav Kumar wrote: > 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: RFC was v1, so technically this is v2. > - 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 > -- With best wishes Dmitry
