As per https://doc.dpdk.org/guides/nics/ena.html section 17.9 enabling IOMMU on an AWS i3 metal instance is as simple as adding "iommu=1 intel_iommu=on" to /etc/default/grub, update-grub, and reboot.
I can't get this to work. Once done, I cannot ssh back into the instance; EC2 console can't get good status checks. It has to be terminated. My config: * Ubuntu 20.04 LTS x86 64-bit stock AWS AMI * i3.metal (spot) But more importantly: if one has provisioned a i3.metal instance, why enable IOMMU at all? Can't one just run vfio-pci in enable_unsafe_noiommu_mode? Even if IOMMU runs in enable_unsafe_noiommu_mode, I'd like to reconfirm the steps to make DPDK work on an AWS i3.metal instance. My steps are: * git clone https://github.com/amzn/amzn-drivers.git * git clone git://dpdk.org/dpdk and checkout tag 'v19.11-rc4' * in dpdk git am in the patches from amzn-drivers 19.11 userspace dir * build dpdk with: make install T=x86_64-native-linuxapp-gcc DESTDIR=/home/ubuntu/local * then follow the instructions at https://github.com/amzn/amzn-drivers/tree/master/userspace/dpdk/enav2-vfio-patch to build and install an updated vfio kernel module Is that complete and correct?
