diff --git a/android/composd/aidl/android/system/composd/IIsolatedCompilationService.aidl b/android/composd/aidl/android/system/composd/IIsolatedCompilationService.aidl
index 3748899..d7757db 100644
--- a/android/composd/aidl/android/system/composd/IIsolatedCompilationService.aidl
+++ b/android/composd/aidl/android/system/composd/IIsolatedCompilationService.aidl
@@ -35,7 +35,7 @@
      * callback, unless the returned ICompilationTask is cancelled. The caller should maintain
      * a reference to the ICompilationTask until compilation completes or is cancelled.
      */
-    ICompilationTask startStagedApexCompile(ICompilationTaskCallback callback);
+    ICompilationTask startStagedApexCompile(ICompilationTaskCallback callback, String os);
 
     /**
      * Run odrefresh in a test instance of CompOS until completed or failed.
diff --git a/android/composd/src/instance_manager.rs b/android/composd/src/instance_manager.rs
index d1b0b99..a7154ec 100644
--- a/android/composd/src/instance_manager.rs
+++ b/android/composd/src/instance_manager.rs
@@ -39,10 +39,11 @@
         Self { service, state: Default::default() }
     }
 
-    pub fn start_current_instance(&self) -> Result<CompOsInstance> {
+    pub fn start_current_instance(&self, os: &str) -> Result<CompOsInstance> {
         let mut vm_parameters = new_vm_parameters()?;
         vm_parameters.name = String::from("Composd");
         vm_parameters.prefer_staged = true;
+        vm_parameters.os = os.to_owned();
         self.start_instance(CURRENT_INSTANCE_DIR, vm_parameters)
     }
 
diff --git a/android/composd/src/service.rs b/android/composd/src/service.rs
index 3cc40af..1e38eee 100644
--- a/android/composd/src/service.rs
+++ b/android/composd/src/service.rs
@@ -51,9 +51,10 @@
     fn startStagedApexCompile(
         &self,
         callback: &Strong<dyn ICompilationTaskCallback>,
+        os: &str,
     ) -> binder::Result<Strong<dyn ICompilationTask>> {
         check_permissions()?;
-        to_binder_result(self.do_start_staged_apex_compile(callback))
+        to_binder_result(self.do_start_staged_apex_compile(callback, os))
     }
 
     fn startTestCompile(
@@ -76,8 +77,10 @@
     fn do_start_staged_apex_compile(
         &self,
         callback: &Strong<dyn ICompilationTaskCallback>,
+        os: &str,
     ) -> Result<Strong<dyn ICompilationTask>> {
-        let comp_os = self.instance_manager.start_current_instance().context("Starting CompOS")?;
+        let comp_os =
+            self.instance_manager.start_current_instance(os).context("Starting CompOS")?;
 
         let target_dir_name = PENDING_ARTIFACTS_SUBDIR.to_owned();
         let task = OdrefreshTask::start(
diff --git a/android/composd_cmd/composd_cmd.rs b/android/composd_cmd/composd_cmd.rs
index 6281bd0..c944c17 100644
--- a/android/composd_cmd/composd_cmd.rs
+++ b/android/composd_cmd/composd_cmd.rs
@@ -39,7 +39,11 @@
 #[derive(Parser)]
 enum Actions {
     /// Compile classpath for real. Output can be used after a reboot.
-    StagedApexCompile {},
+    StagedApexCompile {
+        /// OS for the VM.
+        #[clap(long, default_value = "microdroid")]
+        os: String,
+    },
 
     /// Compile classpath in a debugging VM. Output is ignored.
     TestCompile {
@@ -59,7 +63,7 @@
     ProcessState::start_thread_pool();
 
     match action {
-        Actions::StagedApexCompile {} => run_staged_apex_compile()?,
+        Actions::StagedApexCompile { os } => run_staged_apex_compile(&os)?,
         Actions::TestCompile { prefer_staged, os } => run_test_compile(prefer_staged, &os)?,
     }
 
@@ -116,8 +120,8 @@
     }
 }
 
-fn run_staged_apex_compile() -> Result<()> {
-    run_async_compilation(|service, callback| service.startStagedApexCompile(callback))
+fn run_staged_apex_compile(os: &str) -> Result<()> {
+    run_async_compilation(|service, callback| service.startStagedApexCompile(callback, os))
 }
 
 fn run_test_compile(prefer_staged: bool, os: &str) -> Result<()> {
diff --git a/libs/service-compos/java/com/android/server/compos/IsolatedCompilationJobService.java b/libs/service-compos/java/com/android/server/compos/IsolatedCompilationJobService.java
index adc0300..3033991 100644
--- a/libs/service-compos/java/com/android/server/compos/IsolatedCompilationJobService.java
+++ b/libs/service-compos/java/com/android/server/compos/IsolatedCompilationJobService.java
@@ -174,7 +174,7 @@
             }
 
             try {
-                ICompilationTask composTask = composd.startStagedApexCompile(this);
+                ICompilationTask composTask = composd.startStagedApexCompile(this, "microdroid");
                 mMetrics.onCompilationStarted();
                 mTask.set(composTask);
                 composTask.asBinder().linkToDeath(this, 0);
diff --git a/tests/benchmark_hostside/java/android/avf/test/AVFHostTestCase.java b/tests/benchmark_hostside/java/android/avf/test/AVFHostTestCase.java
index e2956f2..003c3f0 100644
--- a/tests/benchmark_hostside/java/android/avf/test/AVFHostTestCase.java
+++ b/tests/benchmark_hostside/java/android/avf/test/AVFHostTestCase.java
@@ -19,6 +19,7 @@
 import static com.android.tradefed.device.TestDevice.MicrodroidBuilder;
 import static com.android.tradefed.testtype.DeviceJUnit4ClassRunner.TestMetrics;
 
+import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.truth.Truth.assertWithMessage;
 import static com.google.common.truth.TruthJUnit.assume;
 
@@ -113,16 +114,78 @@
 
     @Test
     public void testBootWithCompOS() throws Exception {
-        composTestHelper(true);
+        composTestHelper(true, "microdroid");
+    }
+
+    @Test
+    public void testBootWithCompOS_os_android15_66() throws Exception {
+        composTestHelper(true, "android15_66");
+    }
+
+    @Test
+    public void testBootWithCompOS_os_microdroid_16k() throws Exception {
+        composTestHelper(true, "microdroid_16k");
     }
 
     @Test
     public void testBootWithoutCompOS() throws Exception {
-        composTestHelper(false);
+        composTestHelper(false, null);
     }
 
     @Test
     public void testNoLongHypSections() throws Exception {
+        noLongHypSectionsHelper("microdroid");
+    }
+
+    @Test
+    public void testNoLongHypSections_os_android15_66() throws Exception {
+        noLongHypSectionsHelper("android15_66");
+    }
+
+    @Test
+    public void testNoLongHypSections_os_microdroid_16k() throws Exception {
+        noLongHypSectionsHelper("microdroid_16k");
+    }
+
+    @Test
+    public void testPsciMemProtect() throws Exception {
+        psciMemProtectHelper("microdroid");
+    }
+
+    @Test
+    public void testPsciMemProtect_os_android15_66() throws Exception {
+        psciMemProtectHelper("android15_66");
+    }
+
+    @Test
+    public void testPsciMemProtect_os_microdroid_16k() throws Exception {
+        psciMemProtectHelper("microdroid_16k");
+    }
+
+    @Test
+    public void testCameraAppStartupTime() throws Exception {
+        String[] launchIntentPackages = {
+            "com.android.camera2",
+            "com.google.android.GoogleCamera/com.android.camera.CameraLauncher"
+        };
+        String launchIntentPackage = findSupportedPackage(launchIntentPackages);
+        assume().withMessage("No supported camera package").that(launchIntentPackage).isNotNull();
+        appStartupHelper(launchIntentPackage);
+    }
+
+    @Test
+    public void testSettingsAppStartupTime() throws Exception {
+        String[] launchIntentPackages = {"com.android.settings"};
+        String launchIntentPackage = findSupportedPackage(launchIntentPackages);
+        assume().withMessage("No supported settings package").that(launchIntentPackage).isNotNull();
+        appStartupHelper(launchIntentPackage);
+    }
+
+    private void noLongHypSectionsHelper(String osKey) throws Exception {
+        assumeKernelSupported(osKey);
+        assumeVmTypeSupported(osKey, true);
+        String os = SUPPORTED_OSES.get(osKey);
+
         String[] hypEvents = {"hyp_enter", "hyp_exit"};
 
         assumeTrue(
@@ -130,7 +193,7 @@
                 KvmHypTracer.isSupported(getDevice(), hypEvents));
 
         KvmHypTracer tracer = new KvmHypTracer(getDevice(), hypEvents);
-        String result = tracer.run(COMPOSD_CMD_BIN + " test-compile");
+        String result = tracer.run(COMPOSD_CMD_BIN + " test-compile --os " + os);
         assertWithMessage("Failed to test compilation VM.")
                 .that(result)
                 .ignoringCase()
@@ -141,8 +204,11 @@
         CLog.i("Hypervisor traces parsed successfully.");
     }
 
-    @Test
-    public void testPsciMemProtect() throws Exception {
+    public void psciMemProtectHelper(String osKey) throws Exception {
+        assumeKernelSupported(osKey);
+        assumeVmTypeSupported(osKey, true);
+        String os = SUPPORTED_OSES.get(osKey);
+
         String[] hypEvents = {"psci_mem_protect"};
 
         assumeTrue(
@@ -151,7 +217,12 @@
         KvmHypTracer tracer = new KvmHypTracer(getDevice(), hypEvents);
 
         /* We need to wait for crosvm to die so all the VM pages are reclaimed */
-        String result = tracer.run(COMPOSD_CMD_BIN + " test-compile && killall -w crosvm || true");
+        String result =
+                tracer.run(
+                        COMPOSD_CMD_BIN
+                                + " test-compile --os "
+                                + os
+                                + " && killall -w crosvm || true");
         assertWithMessage("Failed to test compilation VM.")
                 .that(result)
                 .ignoringCase()
@@ -176,25 +247,6 @@
                 .isGreaterThan(0);
     }
 
-    @Test
-    public void testCameraAppStartupTime() throws Exception {
-        String[] launchIntentPackages = {
-            "com.android.camera2",
-            "com.google.android.GoogleCamera/com.android.camera.CameraLauncher"
-        };
-        String launchIntentPackage = findSupportedPackage(launchIntentPackages);
-        assume().withMessage("No supported camera package").that(launchIntentPackage).isNotNull();
-        appStartupHelper(launchIntentPackage);
-    }
-
-    @Test
-    public void testSettingsAppStartupTime() throws Exception {
-        String[] launchIntentPackages = {"com.android.settings"};
-        String launchIntentPackage = findSupportedPackage(launchIntentPackages);
-        assume().withMessage("No supported settings package").that(launchIntentPackage).isNotNull();
-        appStartupHelper(launchIntentPackage);
-    }
-
     private void appStartupHelper(String launchIntentPackage) throws Exception {
         assumeTrue(
                 "Skip on non-protected VMs",
@@ -471,8 +523,14 @@
         throw new IllegalArgumentException("Failed to get boot time info.");
     }
 
-    private void composTestHelper(boolean isWithCompos) throws Exception {
+    private void composTestHelper(boolean isWithCompos, String osKey) throws Exception {
         assumeFalse("Skip on CF; too slow", isCuttlefish());
+        if (isWithCompos) {
+            assumeKernelSupported(osKey);
+            assumeVmTypeSupported(osKey, true);
+        } else {
+            assertThat(osKey).isNull();
+        }
 
         List<Double> bootDmesgTime = new ArrayList<>(ROUND_COUNT);
 
@@ -480,7 +538,8 @@
             reInstallApex(REINSTALL_APEX_TIMEOUT_SEC);
             try {
                 if (isWithCompos) {
-                    compileStagedApex(COMPILE_STAGED_APEX_TIMEOUT_SEC);
+                    String os = SUPPORTED_OSES.get(osKey);
+                    compileStagedApex(COMPILE_STAGED_APEX_TIMEOUT_SEC, os);
                 }
             } finally {
                 // If compilation fails, we still have a staged APEX, and we need to reboot to
@@ -518,7 +577,7 @@
         getDevice().enableAdbRoot();
     }
 
-    private void compileStagedApex(int timeoutSec) throws Exception {
+    private void compileStagedApex(int timeoutSec, String os) throws Exception {
 
         long timeStart = System.currentTimeMillis();
         long timeEnd = timeStart + timeoutSec * 1000L;
@@ -530,7 +589,7 @@
 
                 String result =
                         android.runWithTimeout(
-                                3 * 60 * 1000, COMPOSD_CMD_BIN + " staged-apex-compile");
+                                3 * 60 * 1000, COMPOSD_CMD_BIN + " staged-apex-compile --os " + os);
                 assertWithMessage("Failed to compile staged APEX. Reason: " + result)
                         .that(result)
                         .ignoringCase()
diff --git a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
index ad37dda..fcef19a 100644
--- a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
+++ b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
@@ -18,6 +18,7 @@
 
 import static com.android.tradefed.testtype.DeviceJUnit4ClassRunner.TestLogData;
 
+import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.truth.Truth.assertWithMessage;
 
 import static org.junit.Assume.assumeFalse;
@@ -267,4 +268,27 @@
     protected boolean isPkvmHypervisor() throws DeviceNotAvailableException {
         return "kvm.arm-protected".equals(getDevice().getProperty("ro.boot.hypervisor.version"));
     }
+
+    protected TestDevice getAndroidDevice() {
+        TestDevice androidDevice = (TestDevice) getDevice();
+        assertThat(androidDevice).isNotNull();
+        return androidDevice;
+    }
+
+    protected void assumeKernelSupported(String osKey) throws Exception {
+        String os = SUPPORTED_OSES.get(osKey);
+        assumeTrue(
+                "Skipping test as OS \"" + os + "\" is not supported",
+                getSupportedOSList().contains(os));
+    }
+
+    protected void assumeVmTypeSupported(String os, boolean protectedVm) throws Exception {
+        // TODO(b/376870129): remove this check
+        if (protectedVm) {
+            assumeFalse("pVMs with 16k kernel are not supported yet :(", os.endsWith("_16k"));
+        }
+        assumeTrue(
+                "Microdroid is not supported for specific VM protection type",
+                getAndroidDevice().supportsMicrodroid(protectedVm));
+    }
 }
diff --git a/tests/hostside/java/com/android/microdroid/test/MicrodroidHostTests.java b/tests/hostside/java/com/android/microdroid/test/MicrodroidHostTests.java
index e8673ce..734de26 100644
--- a/tests/hostside/java/com/android/microdroid/test/MicrodroidHostTests.java
+++ b/tests/hostside/java/com/android/microdroid/test/MicrodroidHostTests.java
@@ -1606,12 +1606,6 @@
         }
     }
 
-    private TestDevice getAndroidDevice() {
-        TestDevice androidDevice = (TestDevice) getDevice();
-        assertThat(androidDevice).isNotNull();
-        return androidDevice;
-    }
-
     // The TradeFed Dockerfile sets LD_LIBRARY_PATH to a directory with an older libc++.so, which
     // breaks binaries that are linked against a newer libc++.so. Binaries commonly use DT_RUNPATH
     // to find an adjacent libc++.so (e.g. `$ORIGIN/../lib64`), but LD_LIBRARY_PATH overrides
@@ -1622,23 +1616,6 @@
         return runUtil;
     }
 
-    private void assumeKernelSupported(String osKey) throws Exception {
-        String os = SUPPORTED_OSES.get(osKey);
-        assumeTrue(
-                "Skipping test as OS \"" + os + "\" is not supported",
-                getSupportedOSList().contains(os));
-    }
-
-    private void assumeVmTypeSupported(String os, boolean protectedVm) throws Exception {
-        // TODO(b/376870129): remove this check
-        if (protectedVm) {
-            assumeFalse("pVMs with 16k kernel are not supported yet :(", os.endsWith("_16k"));
-        }
-        assumeTrue(
-                "Microdroid is not supported for specific VM protection type",
-                getAndroidDevice().supportsMicrodroid(protectedVm));
-    }
-
     private void assumeArm64Supported() throws Exception {
         CommandRunner android = new CommandRunner(getDevice());
         String abi = android.run("getprop", "ro.product.cpu.abi");