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65 lines
2.1 KiB
Markdown
65 lines
2.1 KiB
Markdown
# How to build and run Cloud-hypervisor on AArch64
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Cloud-hypervisor is partially enabled on AArch64 architecture.
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Although all features are not ready yet, you can begin to test Cloud-hypervisor on a AArch64 host by following this guide.
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## Prerequisites
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On AArch64 machines, Cloud-hypervisor depends on an external library `libfdt-dev` for generating Flattened Device Tree (FDT).
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The long-term plan is to replace `libfdt-dev` with some pure-Rust component to get rid of such dependency.
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```bash
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sudo apt-get update
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sudo apt-get install libfdt-dev
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```
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## Build
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Before building, a hack trick need to be performed to get rid of some build error in vmm component. See [this](https://github.com/cloud-hypervisor/kvm-bindings/pull/1) for more info about this temporary workaround.
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```bash
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sed -i 's/"with-serde",\ //g' vmm/Cargo.toml
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```
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The support of AArch64 is in very early stage, only Virtio devices with MMIO tranport is available.
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```bash
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cargo build --no-default-features --features "mmio"
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```
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## Image
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Download kernel binary and rootfs image from AWS.
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```bash
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wget https://s3.amazonaws.com/spec.ccfc.min/img/aarch64/ubuntu_with_ssh/fsfiles/xenial.rootfs.ext4 -O rootfs.img
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wget https://s3.amazonaws.com/spec.ccfc.min/img/aarch64/ubuntu_with_ssh/kernel/vmlinux.bin -O kernel.bin
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```
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## Containerized build
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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.
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To build the development container:
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```bash
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./scripts/dev_cli.sh build-container
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```
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To build Cloud-hypervisor in the container:
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```bash
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./scripts/dev_cli.sh build
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```
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## Run
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Assuming you have built Cloud-hypervisor with the development container, a VM can be started with command:
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```bash
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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 --serial file=serial.log --log-file log.log -vvv
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```
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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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