ci: consolidate integration tests on github runners

GitHub runners support nested virtualization (only on x86_64), so
consolidate the integration and unit tests on them to simplify
the workflows.

Signed-off-by: Sergio Lopez <[email protected]>

Author: slp

.github/workflows/code_quality-x86_64.yml

@@ -1,26 +1,18 @@
-name: Code Quality (rustfmt and clippy)
+name: linux-x86_64
 on: [pull_request, create]
 
 jobs:
   build:
     if: github.event_name == 'pull_request'
-    name: Code Quality (clippy, rustfmt)
+    name: Code Quality (fmt, clippy)
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
-        target:
-          - x86_64-unknown-linux-gnu
     steps:
       - name: Code checkout
         uses: actions/checkout@v2
-      - name: Install Rust toolchain (${{ matrix.rust }})
+      - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1
         with:
-            toolchain: ${{ matrix.rust }}
-            target: ${{ matrix.target }}
-            override: true
+            toolchain: stable
             components: rustfmt, clippy
 
       - name: Install packages
@@ -40,3 +32,54 @@ jobs:
 
       - name: Clippy (net+blk+gpu+snd features)
         run: cargo clippy --features net,blk,gpu,snd -- -D warnings
+
+  unit:
+    if: github.event_name == 'pull_request'
+    name: Unit Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v2
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: stable
+            components: rustfmt, clippy
+
+      - name: Install packages
+        run: sudo apt-get update && sudo apt-get install -y libvirglrenderer-dev libepoxy-dev libdrm-dev libpipewire-0.3-dev
+
+      - name: Create a fake init
+        run: touch init/init
+
+      - name: Unit tests
+        run: cargo test
+
+  integration:
+    if: github.event_name == 'pull_request'
+    name: Integration Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v2
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: stable
+            target: x86_64-unknown-linux-musl
+
+      - name: Enable KVM group perms
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+          sudo usermod -a -G kvm $USER
+
+      - name: Install packages
+        run: sudo apt-get update && sudo apt-get install -y build-essential patchelf libclang-dev pkg-config net-tools libvirglrenderer-dev libepoxy-dev libdrm-dev libpipewire-0.3-dev
+
+      - name: Install libkrunfw
+        run: curl -L -o /tmp/libkrunfw-4.9.0-x86_64.tgz https://github.com/containers/libkrunfw/releases/download/v4.9.0/libkrunfw-4.9.0-x86_64.tgz && mkdir tmp && tar xf /tmp/libkrunfw-4.9.0-x86_64.tgz -C tmp && sudo mv tmp/lib64/* /lib/x86_64-linux-gnu
+
+      - name: Integration tests
+        run: KRUN_NO_UNSHARE=1 make test