On Mon, Jul 04, 2022 at 09:21:26PM +0800, chenxiang (M) wrote: > Hi, > > We encounter a issue with the patch: our platform is ARM64, and we run DPDK > with smmu disable on VM (without iommu=smmuv3 etc), > > so we use noiommu mode with enable_unsafe_noiommu_mode=1 to passthrough the > device to VM with following steps (those steps are on VM) : > > insmod vfio.ko enable_unsafe_noiommu_mode=1 > insmod vfio_virqfd.ko > insmod vfio-pci-core.ko > insmdo vfio-pci.ko > insmod vfio_iommu_type1.ko > > echo vfio-pci > /sys/bus/pci/devices/0000:00:02.0/driver_override > echo 0000:00:02.0 > /sys/bus/pci/drivers_probe ------------------ failed > > I find that vfio-pci device is not probed because of the additional check. > It works well without this patch. > > Do we need to skip the check if enable_unsafe_noiommu_mode=1? Yes, that is definately an unintended mistake. Thanks, Jason
