This doesn't make much sense. vm-test has a test matrix that runs this against a wide range of kernel versions, and we need test coverage for each of them.

The point is to add coverage reporting to the existing vm-test, test-on-prev-go and test-on-arm64 jobs. Ideally, this would all be done in a single step to keep the size of the yaml a bit manageable:

      - run: go tool covdata merge -o coverage-merged.out
      - run: go tool cover -html=coverage-merged.out -o coverage.html

      - name: Upload Coverage Report
        uses: actions/upload-artifact@v3
        with:
          name: coverage-report
          path: |
            ./coverage-merged.out
            ./coverage.html

Will I have to add this to all three job or it can be done in another separate job?

If we want coverage for all three jobs (we do), then yes, it needs to be in all three. 🙂