Hi Leo, On 3/11/19 10:39 AM, Leo Yan wrote: > 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? Yes that's correct. > > Will debug into dt binding and related code and keep posted at here.OK Thanks Eric > >> 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
