mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2024-07-16 06:07:15 +00:00

Michael Zhao 3f18f93f40 docs: Add a guide for testing on AArch64

The support of AArch64 is in very early stage. The steps in building and
runing on X86 and AArch64 can not align well yet. Adding AArch64 content
to README.md would produce much divergence.
Adding a guide in docs/ folder could be a better way to start now.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>

2020-06-11 15:00:17 +01:00

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How to build and run Cloud-hypervisor on Arm64

Cloud-hypervisor is partially enabled on AArch64 architecture. Although all features are not ready yet, you can begin to test Cloud-hypervisor on a Arm64 host by following this guide.

Prerequisites

On Arm64 machines, Cloud-hypervisor depends on an external library libfdt-dev for generating Flatted Device Tree (FDT).

The long-term plan is to replace libfdt-dev with some pure-Rust component to get rid of such dependency.

sudo apt-get update
sudo apt-get install libfdt-dev

Build

Before building, a hack trick need to be performed to get rid of some build error in vmm component. See this for more info about this temporary workaround.

sed -i 's/"with-serde",\ //g' vmm/Cargo.toml

The support of AArch64 is in very early stage, only Virtio devices with MMIO tranport is available.

cargo build --no-default-features --features "mmio"

Image

Download kernel binary and rootfs image from AWS.

wget https://s3.amazonaws.com/spec.ccfc.min/img/aarch64/ubuntu_with_ssh/fsfiles/xenial.rootfs.ext4 -O rootfs.img
wget https://s3.amazonaws.com/spec.ccfc.min/img/aarch64/ubuntu_with_ssh/kernel/vmlinux.bin -O kernel.bin

Containerized build

If you want to build and test Cloud Hypervisor without having to install all the required dependencies, you can also turn to the development script: dev_cli.sh.

To build the development container:

./scripts/dev_cli.sh build-container

To build Cloud-hypervisor in the container:

./scripts/dev_cli.sh build

Run

Assuming you have built Cloud-hypervisor with the development container, a VM can be started with command:

sudo target/debug/cloud-hypervisor --kernel kernel.bin --disk path=rootfs.ext4 --cmdline "keep_bootcon console=hvc0 reboot=k panic=1 pci=off root=/dev/vda rw" --cpus boot=4 --memory size=512M --seccomp false --serial file=serial.log --log-file log.log -vvv

If the build was done out of the container, replace the binary path with build/cargo_target/aarch64-unknown-linux-gnu/debug/cloud-hypervisor.

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