ci: add a qemu/arm64 VM to GH workflows

.github/workflows/qemu-crossbuild.yaml

@@ -0,0 +1,134 @@
+name: cross-build using qemu
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  release:
+    types:
+      - published
+
+jobs:
+  build:
+    runs-on: oracle-vm-16cpu-64gb-x86-64
+    strategy:
+      matrix:
+        ubuntu: ['noble']
+        arch: ['arm64']
+    steps:
+      - uses: actions/checkout@v4
+      - name: Clean disk space
+        uses: ./.github/actions/clean-runner
+      - name: Setup Environment
+        run: |
+          echo "SHORT_SHA=${GITHUB_SHA::7}" >> $GITHUB_ENV
+          cat "$GITHUB_ENV"
+      - name: Install qemu dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y qemu-system-arm qemu-efi-aarch64 qemu-utils cloud-image-utils wget
+      - name: Provision qemu vm
+        run: |
+          wget https://cloud-images.ubuntu.com/${{ matrix.ubuntu }}/current/${{ matrix.ubuntu }}-server-cloudimg-${{ matrix.arch }}.img
+
+          qemu-img create -f qcow2 -F qcow2 \
+            -b ${{ matrix.ubuntu }}-server-cloudimg-${{ matrix.arch }}.img \
+            ${{ matrix.ubuntu }}-snapshot.qcow2 256G
+
+          cat >"user-data" << EOF
+          #cloud-config
+          password: passw0rd
+          chpasswd: { expire: False }
+          ssh_pwauth: True
+          EOF
+          cloud-localds user-data.img user-data
+
+          cp /usr/share/AAVMF/AAVMF_CODE.fd .
+          cp /usr/share/AAVMF/AAVMF_VARS.fd .
+
+          qemu-system-aarch64 \
+            -m 16384 \
+            -cpu max -smp 8 \
+            -machine virt,gic-version=max \
+            -display none \
+            -drive if=pflash,format=raw,readonly=on,file=AAVMF_CODE.fd \
+            -drive if=pflash,format=raw,file=AAVMF_VARS.fd \
+            -drive if=none,file="${{ matrix.ubuntu }}-snapshot.qcow2",format=qcow2,id=hd0 \
+            -device virtio-blk-device,drive=hd0 \
+            -drive file=user-data.img,format=raw,media=cdrom,if=none,id=cd0 \
+            -device virtio-blk-device,drive=cd0 \
+            -netdev type=user,id=net0,hostfwd=tcp::22225-:22 \
+            -device virtio-net-device,netdev=net0 \
+            -virtfs local,path=$GITHUB_WORKSPACE,mount_tag=host_share,security_model=passthrough,id=host_share_fs \
+            -daemonize
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y sshpass
+      - name: Check ssh connectivity
+        run: |
+          set +e
+          while true; do
+            echo Trying to connect
+            sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost whoami
+            if [ $? -eq 0 ]; then
+              break
+            fi
+            ps -axf | grep qemu
+            netstat -tnlp
+            sudo dmesg
+            echo "intel"
+            cat /sys/module/kvm_intel/parameters/nested
+            echo "amd"
+            cat /sys/module/kvm_amd/parameters/nested
+            sleep 10
+          done
+      - name: Setup passthrough fs mount
+        run: |
+          set +e
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            sudo mkdir /mnt/host_share
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            sudo mount -t 9p -o trans=virtio,version=9p2000.L host_share /mnt/host_share
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            'mkdir /home/ubuntu/src && cp -R /mnt/host_share/* /home/ubuntu/src/'
+      - name: Set up golang
+        run: |
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            'cd /mnt/host_share && sudo tools/install-go'
+      - name: install dependencies
+        run: |
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            'cd /home/ubuntu/src && sudo ./install-build-deps.sh'
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            'sudo usermod --add-subuids 100000-165535 --add-subgids 100000-165535 ubuntu'
+      - name: Build-level1
+        run: |
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            ". /etc/profile; cd /home/ubuntu/src; go env; sudo rm -rf .build ./test/centos ./test/ubuntu; sudo make -C cmd/stacker/lxc-wrapper clean"
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            ". /etc/profile; cd /home/ubuntu/src; make show-info"
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            ". /etc/profile; cd /home/ubuntu/src; make stacker-dynamic VERSION_FULL=$SHORT_SHA"
+      - name: Build
+        run: |
+          sshpass -p passw0rd ssh -v -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -p 22225 ubuntu@localhost \
+            ". /etc/profile; cd /home/ubuntu/src; make stacker VERSION_FULL=$SHORT_SHA; cat .build/stacker/imports/build-env/.stacker-run.sh; cat .build/stacker/lxc.log; sudo cp /home/ubuntu/src/stacker /mnt/host_share/"
+      - name: Check binary
+        run: |
+          cd $GITHUB_WORKSPACE
+          ls -al stacker
+          file stacker
+      - if: github.event_name == 'release' && github.event.action == 'published'
+        name: Publish artifacts on releases
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: stacker
+          asset_name: stacker-${{ matrix.arch }}
+          tag: ${{ github.ref }}
+          overwrite: true
+          file_glob: true

tools/install-go

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -xe
+
+cd /tmp
+wget -N https://go.dev/dl/go1.24.7.linux-arm64.tar.gz -O golang.tar.gz
+rm -rf /usr/local/go
+tar -xzvf golang.tar.gz -C /usr/local
+echo 'export PATH=/usr/local/go/bin:$PATH' >> /etc/profile
+echo 'export GOROOT=/usr/local/go' >> /etc/profile
+. /etc/profile
+go env