Quoting Chris Wilson (2020-11-17 15:42:52) > Attach a iommu [DMAR] fault handler for our device and try and reset the > GPU upon a fault. At worst this will allow us to more quickly recover > from a fault, rather than wait 10s for the hangcheck to determine a > stuctk GPU. At best, it will immediately restart the GPU and paper over > the bad iommu. Scratch that, it was just good luck in test runs. Still received a [ 40.695947] DMAR: DRHD: handling fault status reg 3 [ 40.696128] DMAR: [DMA Write] Request device [00:02.0] PASID ffffffff fault addr 54000 [fault reason 07] Next page table ptr is invalid with no sign of our fault_handler() being invoked. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
