13:56 <mwalle> anyone seen something like that lately? https://pastebin.com/raw/p3rPepQ9

13:56 <mwalle> (this is on a LS1028A)

14:13 <lynxeye> mwalle: Not sure if there are any other systems with etnaviv + iommu aside from ls1028a. This may be triggered by the quite unusual setup where we try to configure DMA for the drm device part of the driver while the module is probed. This may be before the iommu is probed, as the drm driver doesn't have any direct dependency onto the iommu. Only the individual GPU nodes do have this link.

14:14 <lynxeye> Maybe it would be a good idea to defer this dma configuration setup for the drm device to gpu_load time, where we can be sure that the GPU nodes are probed and thus the iommu must also be present.