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cloud-hypervisor/docs/arm64.md
Henry Wang 709545920e docs: Consolidate AArch64 cloud-img related doc into README 
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
2022-12-13 13:38:11 +00:00

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How to build and test Cloud Hypervisor on AArch64

This document introduces how to build and test Cloud Hypervisor on AArch64. Currently, Cloud Hypervisor supports 2 methods of booting on AArch64: UEFI booting and direct-kernel booting. The document covers both methods.

All the steps are based on Ubuntu. We use the Ubuntu cloud image for guest VM disk.

Direct-kernel booting

Alternativelly, you can build your own kernel for guest VM. This way, UEFI is not involved and ACPI cannot be enabled.

Building kernel

$ pushd $CLOUDH
$ git clone --depth 1 "https://github.com/cloud-hypervisor/linux.git" -b ch-5.12
$ cd linux
$ cp $CLOUDH/cloud-hypervisor/resources/linux-config-aarch64 .config
$ make -j `nproc`
$ popd

Booting the guest VM

$ pushd $CLOUDH
$ sudo $CLOUDH/cloud-hypervisor/target/debug/cloud-hypervisor \
           --api-socket /tmp/cloud-hypervisor.sock \
           --kernel $CLOUDH/linux/arch/arm64/boot/Image \
           --disk path=focal-server-cloudimg-arm64.raw \
           --cmdline "keep_bootcon console=ttyAMA0 reboot=k panic=1 root=/dev/vda1 rw" \
           --cpus boot=4 \
           --memory size=4096M \
           --net tap=,mac=12:34:56:78:90:01,ip=192.168.1.1,mask=255.255.255.0 \
           --serial tty \
           --console off
$ popd