--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/JavadocTool.java	Mon Oct 08 07:18:40 2018 -0400
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/JavadocTool.java	Mon Oct 08 11:14:59 2018 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -34,6 +34,8 @@
 import java.util.Map;
 import java.util.Set;
 
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
 import javax.tools.JavaFileObject;
 import javax.tools.StandardJavaFileManager;
 
@@ -41,6 +43,7 @@
 import com.sun.tools.javac.code.DeferredCompletionFailureHandler;
 import com.sun.tools.javac.code.Symbol.Completer;
 import com.sun.tools.javac.code.Symbol.CompletionFailure;
+import com.sun.tools.javac.code.Symbol.PackageSymbol;
 import com.sun.tools.javac.comp.Enter;
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.JCClassDecl;
@@ -213,6 +216,17 @@
 
             dcfh.setHandler(dcfh.userCodeHandler);
             etable.analyze();
+
+            // Ensure that package-info is read for all included packages
+            for (Element e : etable.getIncludedElements()) {
+                if (e.getKind() == ElementKind.PACKAGE) {
+                    PackageSymbol packge = (PackageSymbol) e;
+                    if (packge.package_info != null) {
+                        packge.package_info.complete();
+                    }
+                }
+            }
+
         } catch (CompletionFailure cf) {
             throw new ToolException(ABNORMAL, cf.getMessage(), cf);
         } catch (Abort abort) {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/jdk/javadoc/doclet/testSerialTag/TestSerialTag.java	Mon Oct 08 11:14:59 2018 -0700
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8207214
+ * @summary Test package-level at-serial tags
+ * @library /tools/lib ../lib
+ * @modules jdk.javadoc/jdk.javadoc.internal.tool
+ * @build JavadocTester toolbox.ToolBox
+ * @run main TestSerialTag
+ */
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+import toolbox.ToolBox;
+
+public class TestSerialTag extends JavadocTester {
+    public static void main(String... args) throws Exception {
+        TestSerialTag tester = new TestSerialTag();
+        tester.runTests(m -> new Object[] { Path.of(m.getName()) });
+    }
+
+    private final ToolBox tb;
+
+    TestSerialTag() {
+        tb = new ToolBox();
+    }
+
+    @Test
+    public void testCombo(Path base) throws IOException {
+        boolean[] moduleValues = { false, true };
+        String[] tagValues = { "", "@serial include", "@serial exclude" };
+        for (boolean module : moduleValues ) {
+            for (String tag : tagValues ) {
+                String name = (module ? "module-" : "")
+                              + (tag.isEmpty() ? "default" : tag.replace("@serial ", ""));
+                Path dir = base.resolve(name);
+                test(dir, module, tag);
+            }
+        }
+
+    }
+
+    void test(Path base, boolean module, String tag) throws IOException {
+        out.println("Test: module:" + module + ", tag:" + tag);
+
+        Path srcDir = generateSource(base, module, tag);
+
+        Path outDir = base.resolve("out");
+        if (module) {
+            javadoc("-d", outDir.toString(),
+                "--module-source-path", srcDir.toString(),
+                "--module", "m");
+        } else {
+            javadoc("-d", outDir.toString(),
+                "-sourcepath", srcDir.toString(),
+                "p", "q");
+        }
+        checkExit(Exit.OK);
+
+        boolean expectLink = !tag.equals("@serial exclude");
+        checkSeeSerializedForm(module, expectLink);
+    }
+
+    /**
+     * Generates source for a test case.
+     * Two classes are generated, in two different packages.
+     * One package has a variable at-serial tag to test;
+     * The other package is a control and always has no special tag.
+     *
+     * @param base the working directory for the test case
+     * @param module whether or not to enclose the packages in a module
+     * @param tag the at-serial tag to be tested
+     * @return the directory in which the source was created
+     */
+    Path generateSource(Path base, boolean module, String tag) throws IOException {
+        Path srcDir = base.resolve("src");
+
+        Path dir;
+        if (module) {
+            dir = srcDir.resolve("m");
+            tb.writeJavaFiles(dir,
+                "module m { exports p; exports q; }");
+        } else {
+            dir = srcDir;
+        }
+
+        tb.writeJavaFiles(dir,
+            "/** This is package p;\n * " + tag + "\n */\n"
+            + "package p;",
+            "/** This is class p.C1;\n */\n"
+            + "package p; public class C1 implements java.io.Serializable { }",
+            "/** This is package q;\n */\n"
+            + "package q;",
+            "/** This is class q.C2;\n */\n"
+            + "package q; public class C2 implements java.io.Serializable { }"
+        );
+
+        return srcDir;
+    }
+
+    /**
+     * Checks the link to the serialized form page,
+     * and whether classes are documented on that page.
+     *
+     * @param module whether or not the output is module-oriented
+     * @param b whether or not class p.C1 should be documented as serializable
+     */
+    void checkSeeSerializedForm(boolean module, boolean b) {
+        String prefix = module ? "m/" : "";
+
+        checkOutput(prefix + "p/C1.html", b,
+            "serialized-form.html");
+        checkOutput("serialized-form.html", b,
+            "C1");
+
+        checkOutput(prefix + "q/C2.html", true,
+            "serialized-form.html");
+        checkOutput("serialized-form.html", true,
+            "C2");
+    }
+}
+