tests: Add test for booting from vmlinux

Download and build a Linux kernel and use the vmlinux produced as the
kernel used with a direct boot kernel test.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

Jenkinsfile

@@ -5,6 +5,7 @@ stage ("Builds") {
 		}
 		stage ('Install system packages') {
 			sh "sudo apt-get -y install build-essential mtools libssl-dev pkg-config"
+			sh 'sudo apt-get -y install flex bison libelf-dev'
 		}
 		stage ('Install Rust') {
 			sh "nohup curl https://sh.rustup.rs -sSf | sh -s -- -y"

scripts/run_integration_tests.sh

@@ -24,6 +24,27 @@ if [ ! -f "$OS_IMAGE" ]; then
     popd
 fi
 
+
+VMLINUX_IMAGE="$WORKLOADS_DIR/vmlinux"
+BZIMAGE_IMAGE="$WORKLOADS_DIR/bzImage"
+
+if [ ! -f "$VMLINUX_IMAGE" ]; then
+    SRCDIR=$PWD
+    pushd $WORKLOADS_DIR
+    wget --quiet https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.0.21.tar.xz
+    tar xf linux-5.0.21.tar.xz
+    pushd linux-5.0.21
+    cp $SRCDIR/resources/linux-5.0-config .config
+    make bzImage -j `nproc`
+    cp vmlinux $VMLINUX_IMAGE
+    cp arch/x86/boot/bzImage $BZIMAGE_IMAGE
+    popd
+    rm linux-5.0.21.tar.xz
+    rm -r linux-5.0.21
+    popd
+fi
+
+
 rm /tmp/cloudinit.img
 mkdosfs -n config-2 -C /tmp/cloudinit.img 8192
 mcopy -oi /tmp/cloudinit.img -s test_data/cloud-init/openstack ::

src/main.rs

@@ -324,4 +324,46 @@ mod tests {
             Ok(())
         });
     }
+
+    #[test]
+    fn test_vmlinux_boot() {
+        test_block!(tb, "", {
+            let (disks, _) = prepare_files();
+            let mut workload_path = dirs::home_dir().unwrap();
+            workload_path.push("workloads");
+
+            let mut kernel_path = workload_path.clone();
+            kernel_path.push("vmlinux");
+
+            let mut child = Command::new("target/debug/cloud-hypervisor")
+                .args(&["--cpus", "1"])
+                .args(&["--memory", "512"])
+                .args(&["--kernel", kernel_path.to_str().unwrap()])
+                .args(&["--disk", disks[0], disks[1]])
+                .args(&["--net", "tap=,mac=,ip=192.168.2.1,mask=255.255.255.0"])
+                .args(&["--cmdline", "root=PARTUUID=3cb0e0a5-925d-405e-bc55-edf0cec8f10a console=tty0 console=ttyS0,115200n8 console=hvc0 quiet init=/usr/lib/systemd/systemd-bootchart initcall_debug tsc=reliable no_timer_check noreplace-smp cryptomgr.notests rootfstype=ext4,btrfs,xfs kvm-intel.nested=1 rw"])
+                .spawn()
+                .unwrap();
+
+            thread::sleep(std::time::Duration::new(10, 0));
+
+            aver_eq!(tb, get_cpu_count(), 1);
+            aver!(tb, get_total_memory() > 496_000);
+            aver!(tb, get_entropy() >= 1000);
+            aver_eq!(
+                tb,
+                ssh_command("grep -c PCI-MSI /proc/interrupts")
+                    .trim()
+                    .parse::<u32>()
+                    .unwrap(),
+                8
+            );
+
+            ssh_command("sudo reboot");
+            thread::sleep(std::time::Duration::new(10, 0));
+            let _ = child.kill();
+            let _ = child.wait();
+            Ok(())
+        });
+    }
 }