svn commit: r285818 - head/release/doc/en_US.ISO8859-1/relnotes stable/10/release/doc/en_US.ISO8859-1/relnotes

[Glen Barber]

Author: gjb
Date: Thu Jul 23 18:11:52 2015
New Revision: 285818
URL: https://svnweb.freebsd.org/changeset/base/285818

Log:
  Refine the PAE_TABLES entry based on feedback from kib
  and jhb.
  
  Approved by:	re (implicit)
  Sponsored by:	The FreeBSD Foundation

Modified:
  stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml

Changes in other areas also in this revision:
Modified:
  head/release/doc/en_US.ISO8859-1/relnotes/article.xml

Modified: stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml
==============================================================================
--- stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml	Thu Jul 23 17:27:10 2015	(r285817)
+++ stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml	Thu Jul 23 18:11:52 2015	(r285818)
@@ -353,7 +353,16 @@
       <para revision="282065" contrib="sponsor" sponsor="&ff;">The
 	<literal>PAE_TABLES</literal> kernel configuration option has
 	been added for &os;/&arch.i386;, which instructs &man.pmap.9;
-	to use <acronym>PAE</acronym> format for page tables.</para>
+	to use <acronym>PAE</acronym> format for page tables with
+	32-bit physical addresses.  Unlike the <literal>PAE</literal>
+	option, <literal>PAE_TABLES</literal> preserves kernel binary
+	interface (<acronym>KBI</acronym>) compatibility with
+	non-<literal>PAE</literal> kernels, allowing
+	non-<literal>PAE</literal> kernel modules and drivers to work
+	with a <literal>PAE_TABLES</literal>-enabled kernel.
+	Additionally, system limits are tuned for 4GB maximum
+	<acronym>RAM</acronym>, avoiding kernel virtual address space
+	(<acronym>KVA</acronym>) exhaustion.</para>
 
       <para revision="282826">The <literal>SIFTR</literal> kernel
 	configuration has been added, allowing building &man.siftr.4;