Hi Auger, On Mon, Mar 11, 2019 at 09:23:20AM +0100, Auger Eric wrote: [...] > > P.s. I also checked the sysfs node and found it doesn't contain node > > 'iommu_group': > > > > # ls /sys/bus/pci/devices/0000\:08\:00.0/iommu_group > > ls: cannot access '/sys/bus/pci/devices/0000:08:00.0/iommu_group': No > > such file or directory > > please can you give the output of the following command: > find /sys/kernel/iommu_groups/ I get below result on Juno board: root@debian:~# find /sys/kernel/iommu_groups/ /sys/kernel/iommu_groups/ /sys/kernel/iommu_groups/1 /sys/kernel/iommu_groups/1/devices /sys/kernel/iommu_groups/1/devices/20070000.etr /sys/kernel/iommu_groups/1/type /sys/kernel/iommu_groups/1/reserved_regions /sys/kernel/iommu_groups/0 /sys/kernel/iommu_groups/0/devices /sys/kernel/iommu_groups/0/devices/7ffb0000.ohci /sys/kernel/iommu_groups/0/devices/7ffc0000.ehci /sys/kernel/iommu_groups/0/type /sys/kernel/iommu_groups/0/reserved_regions So the 'iommu_groups' is not created for pci-e devices, right? Will debug into dt binding and related code and keep posted at here. > when booting your host without noiommu=true > > At first sight I would say you have trouble with your iommu groups. Thanks a lot for guidance. Leo Yan _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
