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:
head/release/doc/en_US.ISO8859-1/relnotes/article.xml
Changes in other areas also in this revision:
Modified:
stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml
Modified: head/release/doc/en_US.ISO8859-1/relnotes/article.xml
==============================================================================
--- head/release/doc/en_US.ISO8859-1/relnotes/article.xml Thu Jul 23
17:27:10 2015 (r285817)
+++ head/release/doc/en_US.ISO8859-1/relnotes/article.xml Thu Jul 23
18:11:52 2015 (r285818)
@@ -803,7 +803,16 @@
<para revision="281495" 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="282215">The <literal>SIFTR</literal> kernel
configuration has been added, allowing building &man.siftr.4;
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