added make mandocs

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2250 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/kernel-inst.xml

@@ -1,12 +1,27 @@
 <sect2>
-<title>Installation of the kernel headers</title>
+<title>Installation of the kernel headers and man pages</title>
 
 <para>We won't be compiling a new kernel yet -- we'll do that when we have
 finished the installation of all the packages. But as some packages need the
 kernel header files, we're going to unpack the kernel archive now, set it up,
 and copy the header files to where they will be found by these packages.</para>
 
-<para>The kernel headers are copied by running the following commands:</para>
+<para>It is important to note that the files in the kernel source directory
+are not owned by root. Whenever you unpack a package as user root (like we
+do here inside chroot), the files end up having the user and group ID's of
+whatever they were on the packager's computer. This is usually not a
+problem for any other package you install because you remove the source
+tree after the installation. But the Linux kernel source tree is often kept
+around for a long time, so there's a chance whatever userid was used will
+be assigned to somebody on your machine, and that person would get write
+access to the kernel source.</para>
+
+<para>In light of this, you might want to run <userinput>chown
+0.0</userinput> on the linux-&kernel-version; directory to ensure all files
+are owned by user <emphasis>root</emphasis>.</para>
+
+<para>The kernel headers and man pages are installed by running the following
+commands:</para>
 
 <para><screen><userinput>ln -s /static/bin/pwd /bin/pwd &amp;&amp;
 make mrproper &amp;&amp;