diff --git a/libs/protoutil/Android.bp b/libs/protoutil/Android.bp
index 128be3c33ac56..28856c87f7c69 100644
--- a/libs/protoutil/Android.bp
+++ b/libs/protoutil/Android.bp
@@ -80,6 +80,10 @@ cc_test {
         "libgmock",
     ],
 
+    test_suites: [
+        "general-tests",
+    ],
+
     proto: {
         type: "full",
     },
diff --git a/libs/protoutil/AndroidTest.xml b/libs/protoutil/AndroidTest.xml
deleted file mode 100644
index 46d418e1bb0a9..0000000000000
--- a/libs/protoutil/AndroidTest.xml
+++ /dev/null
@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2018 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.
--->
-<configuration description="Config for libprotoutil_test">
-    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
-        <option name="cleanup" value="true" />
-        <option name="push" value="libprotoutil_test->/data/nativetest/libprotoutil_test" />
-    </target_preparer>
-    <option name="test-suite-tag" value="apct" />
-    <test class="com.android.tradefed.testtype.GTest" >
-        <option name="native-test-device-path" value="/data/nativetest" />
-        <option name="module-name" value="libprotoutil_test" />
-    </test>
-</configuration>
diff --git a/libs/protoutil/TEST_MAPPING b/libs/protoutil/TEST_MAPPING
new file mode 100644
index 0000000000000..b10dd9b067b6b
--- /dev/null
+++ b/libs/protoutil/TEST_MAPPING
@@ -0,0 +1,12 @@
+{
+  "presubmit": [
+    {
+      "name": "libprotoutil_test"
+    }
+  ],
+  "hwasan-postsubmit": [
+    {
+      "name": "libprotoutil_test"
+    }
+  ]
+}
diff --git a/libs/protoutil/src/EncodedBuffer.cpp b/libs/protoutil/src/EncodedBuffer.cpp
index 96b54c63a836b..afb54a6c49b62 100644
--- a/libs/protoutil/src/EncodedBuffer.cpp
+++ b/libs/protoutil/src/EncodedBuffer.cpp
@@ -17,6 +17,7 @@
 
 #include <stdlib.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 #include <android/util/EncodedBuffer.h>
 #include <android/util/protobuf.h>
@@ -25,7 +26,8 @@
 namespace android {
 namespace util {
 
-const size_t BUFFER_SIZE = 8 * 1024; // 8 KB
+constexpr size_t BUFFER_SIZE = 8 * 1024; // 8 KB
+const size_t kPageSize = getpagesize();
 
 EncodedBuffer::Pointer::Pointer() : Pointer(BUFFER_SIZE)
 {
@@ -92,7 +94,7 @@ EncodedBuffer::EncodedBuffer(size_t chunkSize)
 {
     // Align chunkSize to memory page size
     chunkSize = chunkSize == 0 ? BUFFER_SIZE : chunkSize;
-    mChunkSize = (chunkSize / PAGE_SIZE + ((chunkSize % PAGE_SIZE == 0) ? 0 : 1)) * PAGE_SIZE;
+    mChunkSize = (chunkSize + (kPageSize - 1)) & ~(kPageSize - 1);
     mWp = Pointer(mChunkSize);
     mEp = Pointer(mChunkSize);
 }
diff --git a/libs/protoutil/tests/EncodedBuffer_test.cpp b/libs/protoutil/tests/EncodedBuffer_test.cpp
index f895154c4983e..a09558544c268 100644
--- a/libs/protoutil/tests/EncodedBuffer_test.cpp
+++ b/libs/protoutil/tests/EncodedBuffer_test.cpp
@@ -15,12 +15,16 @@
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
+#include <unistd.h>
+
 using namespace android::util;
 using android::sp;
 
-constexpr size_t TEST_CHUNK_SIZE = 16UL;
-constexpr size_t TEST_CHUNK_HALF_SIZE = TEST_CHUNK_SIZE / 2;
-constexpr size_t TEST_CHUNK_3X_SIZE = 3 * TEST_CHUNK_SIZE;
+constexpr size_t __TEST_CHUNK_SIZE = 16UL;
+const size_t kPageSize = getpagesize();
+const size_t TEST_CHUNK_SIZE = (__TEST_CHUNK_SIZE + (kPageSize - 1)) & ~(kPageSize - 1);
+const size_t TEST_CHUNK_HALF_SIZE = TEST_CHUNK_SIZE / 2;
+const size_t TEST_CHUNK_3X_SIZE = 3 * TEST_CHUNK_SIZE;
 
 static void expectPointer(EncodedBuffer::Pointer* p, size_t pos) {
     EXPECT_EQ(p->pos(), pos);
@@ -34,13 +38,13 @@ TEST(EncodedBufferTest, WriteSimple) {
     expectPointer(buffer->wp(), 0);
     EXPECT_EQ(buffer->currentToWrite(), TEST_CHUNK_SIZE);
     for (size_t i = 0; i < TEST_CHUNK_HALF_SIZE; i++) {
-        buffer->writeRawByte(50 + i);
+        buffer->writeRawByte(static_cast<uint8_t>(50 + i));
     }
     EXPECT_EQ(buffer->size(), TEST_CHUNK_HALF_SIZE);
     expectPointer(buffer->wp(), TEST_CHUNK_HALF_SIZE);
     EXPECT_EQ(buffer->currentToWrite(), TEST_CHUNK_HALF_SIZE);
     for (size_t i = 0; i < TEST_CHUNK_SIZE; i++) {
-        buffer->writeRawByte(80 + i);
+        buffer->writeRawByte(static_cast<uint8_t>(80 + i));
     }
     EXPECT_EQ(buffer->size(), TEST_CHUNK_SIZE + TEST_CHUNK_HALF_SIZE);
     expectPointer(buffer->wp(), TEST_CHUNK_SIZE + TEST_CHUNK_HALF_SIZE);
@@ -49,10 +53,10 @@ TEST(EncodedBufferTest, WriteSimple) {
     // verifies the buffer's data
     expectPointer(buffer->ep(), 0);
     for (size_t i = 0; i < TEST_CHUNK_HALF_SIZE; i++) {
-        EXPECT_EQ(buffer->readRawByte(), 50 + i);
+        EXPECT_EQ(buffer->readRawByte(), static_cast<uint8_t>(50 + i));
     }
     for (size_t i = 0; i < TEST_CHUNK_SIZE; i++) {
-        EXPECT_EQ(buffer->readRawByte(), 80 + i);
+        EXPECT_EQ(buffer->readRawByte(), static_cast<uint8_t>(80 + i));
     }
 
     // clears the buffer