CI: run tests on arm64

Use the actuated runners provided by the CNCF to run the testsuite
on arm64. These runners do not support nested KVM and therefore we
can't run the VM tests there.

Signed-off-by: Lorenz Bauer <lmb@isovalent.com>

.github/workflows/ci.yml

@@ -1,3 +1,4 @@
+name: ci
 on:
   push:
     branches: [ "main" ]
@@ -69,13 +70,6 @@ jobs:
           go build -v ./...
           go test -c -o /dev/null ./... >/dev/null
 
-      - name: Cross build arm64
-        env:
-          GOARCH: arm64
-        run: |
-          go build -v ./...
-          go test -c -o /dev/null ./... >/dev/null
-
   build-docs:
     name: Build Documentation
     runs-on: ubuntu-22.04
@@ -139,6 +133,39 @@ jobs:
           name: Test Results (previous stable Go)
           path: junit.xml
 
+  test-on-arm64:
+    name: Run tests on arm64
+    runs-on: actuated-arm64-2cpu-8gb
+    needs: build-and-lint
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '${{ env.prev_go_version }}'
+
+      - run: go install gotest.tools/gotestsum@v1.8.1
+
+      - name: Test
+        run: gotestsum --ignore-non-json-output-lines --junitfile junit.xml -- -exec sudo -short -count 1 -json ./...
+
+      - name: Benchmark
+        run: go test -exec sudo -short -run '^$' -bench . -benchtime=1x ./...
+
+      - name: Upload Test Results
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: Test Results (arm64)
+          path: junit.xml
+
+      - name: Show dmesg
+        if: failure()
+        run: |
+          sudo dmesg
+
   vm-test:
     name: Run tests on pre-built kernel
     runs-on: ubuntu-latest-4cores-16gb