.travis.yml: Add a KVM-only s390x job

Add a job to build QEMU on s390x with TCG disabled, so
this configuration won't bitrot over time.

This job is quick, running check-unit: Ran for 5 min 30 sec
https://travis-ci.org/github/philmd/qemu/jobs/665456423

Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200322154015.25358-1-philmd@redhat.com>
Message-Id: <20200323161514.23952-12-alex.bennee@linaro.org>

.travis.yml

@@ -525,6 +525,48 @@ jobs:
               $(exit $BUILD_RC);
           fi
 
+    - name: "[s390x] GCC check (KVM)"
+      arch: s390x
+      dist: bionic
+      addons:
+        apt_packages:
+          - libaio-dev
+          - libattr1-dev
+          - libbrlapi-dev
+          - libcap-ng-dev
+          - libgcrypt20-dev
+          - libgnutls28-dev
+          - libgtk-3-dev
+          - libiscsi-dev
+          - liblttng-ust-dev
+          - libncurses5-dev
+          - libnfs-dev
+          - libnss3-dev
+          - libpixman-1-dev
+          - libpng-dev
+          - librados-dev
+          - libsdl2-dev
+          - libseccomp-dev
+          - liburcu-dev
+          - libusb-1.0-0-dev
+          - libvdeplug-dev
+          - libvte-2.91-dev
+          # Tests dependencies
+          - genisoimage
+      env:
+        - TEST_CMD="make check-unit"
+        - CONFIG="--disable-containers --disable-tcg --enable-kvm --disable-tools"
+      script:
+        - ( cd ${SRC_DIR} ; git submodule update --init roms/SLOF )
+        - BUILD_RC=0 && make -j${JOBS} || BUILD_RC=$?
+        - |
+          if [ "$BUILD_RC" -eq 0 ] ; then
+              mv pc-bios/s390-ccw/*.img pc-bios/ ;
+              ${TEST_CMD} ;
+          else
+              $(exit $BUILD_RC);
+          fi
+
     # Release builds
     # The make-release script expect a QEMU version, so our tag must start with a 'v'.
     # This is the case when release candidate tags are created.