diff --git a/core/java/android/content/pm/IPackageInstallerSession.aidl b/core/java/android/content/pm/IPackageInstallerSession.aidl
index f72288c..9a7a949 100644
--- a/core/java/android/content/pm/IPackageInstallerSession.aidl
+++ b/core/java/android/content/pm/IPackageInstallerSession.aidl
@@ -55,4 +55,5 @@
     int getParentSessionId();
 
     boolean isStaged();
+    int getInstallFlags();
 }
diff --git a/core/java/android/content/pm/PackageInstaller.java b/core/java/android/content/pm/PackageInstaller.java
index 3f8aedb..4030708 100644
--- a/core/java/android/content/pm/PackageInstaller.java
+++ b/core/java/android/content/pm/PackageInstaller.java
@@ -1432,6 +1432,18 @@
         }
 
         /**
+         * @return Session's {@link SessionParams#installFlags}.
+         * @hide
+         */
+        public int getInstallFlags() {
+            try {
+                return mSession.getInstallFlags();
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+
+        /**
          * @return the session ID of the multi-package session that this belongs to or
          * {@link SessionInfo#INVALID_ID} if it does not belong to a multi-package session.
          */
diff --git a/services/core/java/com/android/server/pm/PackageInstallerSession.java b/services/core/java/com/android/server/pm/PackageInstallerSession.java
index d0e4457..3ddcf17 100644
--- a/services/core/java/com/android/server/pm/PackageInstallerSession.java
+++ b/services/core/java/com/android/server/pm/PackageInstallerSession.java
@@ -126,6 +126,7 @@
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.ArraySet;
+import android.util.EventLog;
 import android.util.ExceptionUtils;
 import android.util.MathUtils;
 import android.util.Slog;
@@ -3097,6 +3098,11 @@
             if (mResolvedBaseFile == null) {
                 mResolvedBaseFile = new File(appInfo.getBaseCodePath());
                 inheritFileLocked(mResolvedBaseFile);
+            } else if ((params.installFlags & PackageManager.INSTALL_DONT_KILL_APP) != 0) {
+                EventLog.writeEvent(0x534e4554, "219044664");
+
+                // Installing base.apk. Make sure the app is restarted.
+                params.setDontKillApp(false);
             }
 
             // Inherit splits if not overridden.
@@ -3743,6 +3749,11 @@
     }
 
     @Override
+    public int getInstallFlags() {
+        return params.installFlags;
+    }
+
+    @Override
     public DataLoaderParamsParcel getDataLoaderParams() {
         mContext.enforceCallingOrSelfPermission(Manifest.permission.USE_INSTALLER_V2, null);
         return params.dataLoaderParams != null ? params.dataLoaderParams.getData() : null;