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KVM is supported on arm64 Linux (https://www.linux-kvm.org/page/Processor_support#ARM:). For a small (IoT) platform such as the new Raspberry Pi 4 that uses armv8 processor (cortex-a72) it's possible to run Linux host with `/dev/kvm` accleration. This adds support for IoT IaaS in CloudStack. This PR is from a fun weekend project where: - I set up a Raspberry Pi 4 - 4GB RAM model with 4 CPU cores @ 1.5Ghz, 128GB SD samsung evo plus card - Installed Ubuntu 19.10 raspi3 base image: http://cdimage.ubuntu.com/releases/19.10/release/ubuntu-19.10-preinstalled-server-arm64+raspi3.img.xz - Build a custom Linux 5.3 kernel with KVM enabled, deb here: http://dl.rohityadav.cloud/cloudstack-rpi/kernel-19.10/ and install the linux-image and linux-module - Then install/setup CloudStack on it (fix some issues around jna, by manually installing newer libjna-java to /usr/share/cloudstack-agent/lib) - Since the host processor is not x86_64, I had to build a new arm64 (or aarch64) systemvmtemplate: http://dl.rohityadav.cloud/cloudstack-rpi/systemvmtemplate/ I could finally get a 4.13 CloudStack + Adv zone/networking to run on it and deployed a KVM based Ubuntu 19.10 environment and NFS storage. Deployed a test vm with isolated network, VR works as expected. Console proxy works as well, for this tested against arm64 openstack Debian 9/10 templates. I raised the issue of enabling KVM in upstream Ubuntu arm64 build: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1783961 Ubuntu kernel team has come back and future arm64 releases may have KVM enabled by default. Limitation: on my aarch64 env, it did not support IDE, therefore all default bus type for volumes are SCSI by default. With VIRTIO it fails sometimes. Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>