ci: Run KVM tests

This commit makes the KVM tests run in special VM runners tagged with
the 'kvm' tag. In order to avoid building the kernel image used for
running the tests each pipeline, it's built as part of the CI image
building.

For now, KVM tests are only run on the x86_64 architecture. The reasons
for this are two that the kernel image building script doesn't yet handle
any other architecture than x86_64 due to differences in how the image
is built and handled, as well as the fact that there only exists a kvm
tagged runner for x86_64.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2152>

.gitlab-ci.yml

@@ -17,7 +17,7 @@ variables:
 .mutter.fedora:35@common:
   variables:
     FDO_DISTRIBUTION_VERSION: 35
-    BASE_TAG: '2022-03-04.1'
+    BASE_TAG: '2022-03-05.0'
     FDO_DISTRIBUTION_PACKAGES:
       asciidoc
       clang
@@ -31,6 +31,8 @@ variables:
       xorg-x11-server-Xvfb
       mesa-dri-drivers
       xorg-x11-proto-devel
+      qemu-system-x86-core
+      busybox
 
     FDO_DISTRIBUTION_EXEC: |
       dnf install -y 'dnf-command(builddep)' &&
@@ -41,6 +43,7 @@ variables:
       dnf builddep -y libinput --setopt=install_weak_deps=False &&
       dnf builddep -y wayland --setopt=install_weak_deps=False &&
       dnf builddep -y wayland-protocols --setopt=install_weak_deps=False &&
+      dnf builddep -y kernel --setopt=install_weak_deps=False &&
 
       # For Xwayland
       dnf builddep -y xorg-x11-server-Xwayland --setopt=install_weak_deps=False &&
@@ -86,7 +89,21 @@ variables:
                       mutter mutter-devel \
                       gnome-shell &&
 
-      dnf clean all
+      dnf clean all &&
+
+      if [[ x"$(uname -m )" = "xx86_64" ]] ; then
+        meson build -Dkvm_tests=true &&
+        ninja -C build src/tests/kvm/bzImage &&
+        mkdir -p /opt/mutter &&
+        cp build/src/tests/kvm/bzImage /opt/mutter/bzImage &&
+
+        git clone https://github.com/jadahl/virtme.git &&
+        cd virtme &&
+        git checkout e7ee481efa10098ed0d62c9e033d61b2379b9b95 &&
+        ./setup.py install --prefix=/usr &&
+        cd .. &&
+        rm -rf virtme
+      fi
 
 default:
   # Cancel jobs if newer commits are pushed to the branch
@@ -209,9 +226,16 @@ check-code-style:
       fi
   allow_failure: true
 
+.build-mutter-base:
+  variables:
+    BASE_MESON_OPTIONS:
+      -Degl_device=true
+      -Dwayland_eglstream=true
+
 .build-mutter:
   extends:
     - .fdo.distribution-image@fedora
+    - .build-mutter-base
   stage: build
   script:
     - meson . build
@@ -221,8 +245,8 @@ check-code-style:
         --warnlevel 2
         -Dbuildtype=debugoptimized
         -Db_coverage=true
-        -Degl_device=true
-        -Dwayland_eglstream=true
+        $BASE_MESON_OPTIONS
+        $EXTRA_MESON_OPTIONS
     - meson compile -C build
     - meson install -C build
   artifacts:
@@ -231,6 +255,10 @@ check-code-style:
       - build
 
 build-mutter@x86_64:
+  variables:
+    EXTRA_MESON_OPTIONS:
+      -Dkvm_tests=true
+      -Dkvm_kernel_image=/opt/mutter/bzImage
   extends:
     - .build-mutter
     - .mutter.fedora:35@x86_64
@@ -297,19 +325,15 @@ build-without-native-backend-and-wayland@x86_64:
     MALLOC_CHECK_: "3"
     NO_AT_BRIDGE: "1"
   before_script:
-    - glib-compile-schemas $GSETTINGS_SCHEMA_DIR
     # Disable e.g. audio support to not dead lock screen cast tests
     - mkdir -m 700 $XDG_RUNTIME_DIR
     - pipewire & sleep 2
 
-.test-mutter:
+.test-mutter-base:
   extends:
     - .fdo.distribution-image@fedora
   <<: *test-setup
   stage: test
-  script:
-    - dbus-run-session -- xvfb-run -a -s "$XVFB_SERVER_ARGS"
-        ./.gitlab-ci/run-meson.sh test -C build --no-rebuild -t 10
   after_script:
     - pushd build
     - gcovr --root=..
@@ -319,14 +343,27 @@ build-without-native-backend-and-wayland@x86_64:
     - popd
   artifacts:
     expire_in: 1 day
-    reports:
-      junit: "build/meson-logs/testlog.junit.xml"
     name: "mutter-${CI_JOB_NAME}-${CI_COMMIT_REF_NAME}"
     when: always
     paths:
       - build
       - coverage-*.json
 
+.test-mutter:
+  extends:
+    - .fdo.distribution-image@fedora
+    - .test-mutter-base
+  script:
+    - glib-compile-schemas $GSETTINGS_SCHEMA_DIR
+    - dbus-run-session -- xvfb-run -a -s "$XVFB_SERVER_ARGS"
+        ./.gitlab-ci/run-meson.sh test -C build
+          --no-suite 'mutter/kvm'
+          --no-rebuild
+          --timeout-multiplier 10
+  artifacts:
+    reports:
+      junit: "build/meson-logs/testlog.junit.xml"
+
 test-mutter@x86_64:
   extends:
     - .test-mutter
@@ -334,6 +371,24 @@ test-mutter@x86_64:
   needs:
     - build-mutter@x86_64
 
+test-mutter-kvm@x86_64:
+  extends:
+    - .test-mutter-base
+    - .mutter.fedora:35@x86_64
+  tags:
+    - kvm
+  script:
+      meson test -C build
+        --no-rebuild
+        --timeout-multiplier 10
+        --setup plain
+        --suite 'mutter/kvm'
+  needs:
+    - build-mutter@x86_64
+  artifacts:
+    reports:
+      junit: "build/meson-logs/testlog-plain.junit.xml"
+
 test-mutter@aarch64:
   extends:
     - .test-mutter
@@ -357,6 +412,7 @@ coverage:
   needs:
     - test-mutter@x86_64
     - test-mutter@aarch64
+    - test-mutter-kvm@x86_64
 
 can-build-gnome-shell@x86_64:
   extends:
@@ -402,11 +458,17 @@ dist-mutter:
   extends:
     - .fdo.distribution-image@fedora
     - .mutter.fedora:35@x86_64
+    - .build-mutter-base
   <<: *test-setup
   stage: deploy
   needs:
-    - build-mutter@x86_64
+    - build-fedora-container@x86_64
   script:
+    - meson . build --werror --prefix /usr
+        -Dbuildtype=debugoptimized
+        $BASE_MESON_OPTIONS
+        -Dkvm_tests=false
+    - glib-compile-schemas $GSETTINGS_SCHEMA_DIR
     - dbus-run-session -- xvfb-run -a -s "$XVFB_SERVER_ARGS"
         ./.gitlab-ci/run-meson.sh dist -C build
   rules: