Update ci.yml

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Install system tools
       run: |
         sudo apt update
-        sudo apt install -y cmake ninja-build clang lld git libbpf-dev
+        sudo apt install -y qemu-system-x86 cmake ninja-build clang lld git libbpf-dev
 
     # we need to fetch rust deps first to speed up cargo xtask
     - name: Cache Rust dependencies
@@ -45,12 +45,9 @@ jobs:
 
     - name: Build-Tools (LLVM and bpf-linker)
       run: cargo xtask build-tools --free-space
-
-    #- name: Save cached build tools
-    #  uses: actions/cache@v3
-    #  with:
-    #    path: build-tools # path where build-tools are installed
-    #    key: ${{ runner.os }}-build-tools-${{ hashFiles('xtask/src/**/*.rs') }}
 
     - name: Build (eBPF and userland)
       run: cargo xtask build
+
+    - name: Linux Kernel 5.4
+      run: ./scripts/ci/test_kernel.sh 5.4