diff --git a/chapter08/gmp.xml b/chapter08/gmp.xml
index d9ec9a344..bfd030e1d 100644
--- a/chapter08/gmp.xml
+++ b/chapter08/gmp.xml
@@ -101,7 +101,9 @@ make html</userinput></screen>
     instruction".  In this case, gmp should be reconfigured with the option
     <option>--host=none-linux-gnu</option> and rebuilt.</para></caution>
 
-    <para>Ensure that all 199 tests in the test suite passed.
+    <!-- Some tests PASS on a specific uarch but SKIP on other CPUs.
+         For example on K8 the following command outputs 200.  -->
+    <para>Ensure that at least 199 tests in the test suite passed.
     Check the results by issuing the following command:</para>
 
 <screen><userinput remap="test">awk '/# PASS:/{total+=$3} ; END{print total}' gmp-check-log</userinput></screen>
diff --git a/chapter08/tar.xml b/chapter08/tar.xml
index bfb1cf469..ea5f44ebb 100644
--- a/chapter08/tar.xml
+++ b/chapter08/tar.xml
@@ -72,9 +72,17 @@
 
 <screen><userinput remap="test">make check</userinput></screen>
 
+    <!-- On one system the -j4 improvement is 167s - 46s = 121s (72.46%) -->
+    <note><para>The test time for Tar can be reduced significantly on a
+    system with multiple cores.  To do this, append
+    <command>TESTSUITEFLAGS=-j&lt;N&gt;</command> to the line above.  For
+    instance, using -j4 can reduce the test time by over 70
+    percent.</para></note>
+
     <para>One test, capabilities: binary store/restore, is known to fail if it is
     run because LFS lacks selinux, but will be skipped if the host kernel does
-    not support extended attributes on the filesystem used for building LFS.</para>
+    not support extended attributes or security labels on the filesystem
+    used for building LFS.</para>
 
     <para>Install the package:</para>
 
diff --git a/lfs-latest-git.php b/lfs-latest-git.php
index f9239e27b..c0c7aaea3 100644
--- a/lfs-latest-git.php
+++ b/lfs-latest-git.php
@@ -150,6 +150,7 @@ if ( $package == "tcl"        ) $dirpath = "https://www.tcl.tk/software/tcltk/do
 if ( $package == "util-linux" ) $dirpath = max_parent( $dirpath, "v." );
 if ( $package == "vim"        ) $dirpath = "https://github.com/vim/vim/tags";
 if ( $package == "wheel"      ) $dirpath = "https://pypi.org/project/wheel/#files";
+if ( $package == "zlib"       ) $dirpath = "https://www.zlib.net";
 if ( $package == "zstd"       ) $dirpath = github("facebook/zstd");
 
   // Check for ftp