diff --git a/tests/hostside/helper/java/com/android/microdroid/test/host/KvmHypTracer.java b/tests/hostside/helper/java/com/android/microdroid/test/host/KvmHypTracer.java
new file mode 100644
index 0000000..0d8ee96
--- /dev/null
+++ b/tests/hostside/helper/java/com/android/microdroid/test/host/KvmHypTracer.java
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.microdroid.test.host;
+
+import static com.google.common.truth.Truth.assertWithMessage;
+import static org.junit.Assert.assertNotNull;
+
+import com.android.microdroid.test.host.CommandRunner;
+import com.android.tradefed.device.ITestDevice;
+import com.android.tradefed.log.LogUtil.CLog;
+import com.android.tradefed.util.SimpleStats;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.BufferedReader;
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import javax.annotation.Nonnull;
+
+/** This class provides utilities to interact with the hyp tracing subsystem */
+public final class KvmHypTracer {
+
+    private static final String HYP_TRACING_ROOT = "/sys/kernel/tracing/hyp/";
+    private static final String HYP_EVENTS[] = { "hyp_enter", "hyp_exit" };
+    private static final int DEFAULT_BUF_SIZE_KB = 4 * 1024;
+    private static final Pattern LOST_EVENT_PATTERN = Pattern.compile(
+            "^CPU:[0-9]* \\[LOST ([0-9]*) EVENTS\\]");
+    private static final Pattern EVENT_PATTERN = Pattern.compile(
+            "^\\[([0-9]*)\\][ \t]*([0-9]*\\.[0-9]*): (" + String.join("|", HYP_EVENTS) + ") (.*)");
+
+    private final CommandRunner mRunner;
+    private final ITestDevice mDevice;
+    private final int mNrCpus;
+
+    private final ArrayList<File> mTraces;
+
+    private void setNode(String node, int val) throws Exception {
+        mRunner.run("echo " + val + " > " + HYP_TRACING_ROOT + node);
+    }
+
+    private static String eventDir(String event) {
+        return "events/hyp/" + event + "/";
+    }
+
+    public static boolean isSupported(ITestDevice device) throws Exception {
+        for (String event: HYP_EVENTS) {
+            if (!device.doesFileExist(HYP_TRACING_ROOT + eventDir(event) + "/enable"))
+                return false;
+        }
+        return true;
+    }
+
+    public KvmHypTracer(@Nonnull ITestDevice device) throws Exception {
+        assertWithMessage("Hypervisor tracing not supported")
+                .that(isSupported(device)).isTrue();
+
+        mDevice = device;
+        mRunner = new CommandRunner(mDevice);
+        mTraces = new ArrayList<File>();
+        mNrCpus = Integer.parseInt(mRunner.run("nproc"));
+    }
+
+    public String run(String payload_cmd) throws Exception {
+        mTraces.clear();
+
+        setNode("tracing_on", 0);
+        mRunner.run("echo 0 | tee " + HYP_TRACING_ROOT + "events/*/*/enable");
+        setNode("buffer_size_kb", DEFAULT_BUF_SIZE_KB);
+        for (String event: HYP_EVENTS)
+            setNode(eventDir(event) + "/enable", 1);
+        setNode("trace", 0);
+
+        /* Cat each per-cpu trace_pipe in its own tmp file in the background */
+        String cmd = "cd " + HYP_TRACING_ROOT + ";";
+        String trace_pipes[] = new String[mNrCpus];
+        for (int i = 0; i < mNrCpus; i++) {
+            trace_pipes[i] = mRunner.run("mktemp -t trace_pipe.cpu" + i + ".XXXXXXXXXX");
+            cmd += "cat per_cpu/cpu" + i + "/trace_pipe > " + trace_pipes[i] + " &";
+            cmd += "CPU" + i + "_TRACE_PIPE_PID=$!;";
+        }
+
+        /* Run the payload with tracing enabled */
+        cmd += "echo 1 > tracing_on;";
+        String cmd_stdout = mRunner.run("mktemp -t cmd_stdout.XXXXXXXXXX");
+        cmd += payload_cmd + " > " + cmd_stdout + ";";
+        cmd += "echo 0 > tracing_on;";
+
+        /* Actively kill the cat subprocesses as trace_pipe is blocking */
+        for (int i = 0; i < mNrCpus; i++)
+            cmd += "kill -9 $CPU" + i + "_TRACE_PIPE_PID;";
+        cmd += "wait";
+
+        /*
+         * The whole thing runs in a single command for simplicity as `adb
+         * shell` doesn't play well with subprocesses outliving their parent,
+         * and cat-ing a trace_pipe is blocking, so doing so from separate Java
+         * threads wouldn't be much easier as we would need to actively kill
+         * them too.
+         */
+        mRunner.run(cmd);
+
+        for (String t: trace_pipes) {
+            File trace = mDevice.pullFile(t);
+            assertNotNull(trace);
+            mTraces.add(trace);
+            mRunner.run("rm -f " + t);
+        }
+
+        String res = mRunner.run("cat " + cmd_stdout);
+        mRunner.run("rm -f " + cmd_stdout);
+        return res;
+    }
+
+    public SimpleStats getDurationStats() throws Exception {
+        SimpleStats stats = new SimpleStats();
+
+        for (File trace: mTraces) {
+            BufferedReader br = new BufferedReader(new FileReader(trace));
+            double last = 0.0, hyp_enter = 0.0;
+            String l, prev_event = "";
+            while ((l = br.readLine()) != null) {
+                Matcher matcher = LOST_EVENT_PATTERN.matcher(l);
+                if (matcher.find())
+                    throw new OutOfMemoryError("Lost " + matcher.group(1) + " events");
+
+                matcher = EVENT_PATTERN.matcher(l);
+                if (!matcher.find()) {
+                    CLog.w("Failed to parse hyp event: " + l);
+                    continue;
+                }
+
+                int cpu = Integer.parseInt(matcher.group(1));
+                if (cpu < 0 || cpu >= mNrCpus)
+                    throw new ParseException("Incorrect CPU number: " + cpu, 0);
+
+                double cur = Double.parseDouble(matcher.group(2));
+                if (cur < last)
+                    throw new ParseException("Time must not go backward: " + cur, 0);
+                last = cur;
+
+                String event = matcher.group(3);
+                if (event.equals(prev_event)) {
+                    throw new ParseException("Hyp event found twice in a row: " + trace + " - " + l,
+                                             0);
+                }
+
+                switch (event) {
+                    case "hyp_exit":
+                        if (prev_event.equals("hyp_enter"))
+                            stats.add(cur - hyp_enter);
+                        break;
+                    case "hyp_enter":
+                        hyp_enter = cur;
+                        break;
+                    default:
+                        throw new ParseException("Unexpected line in trace" + l, 0);
+                }
+                prev_event = event;
+            }
+        }
+
+        return stats;
+    }
+}