doc/en/gentoo-kernel.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.38 2006/01/30 02:42:45 vanquirius Exp $ -->

<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
<guide link="/doc/en/gentoo-kernel.xml">
<title>Gentoo Linux Kernel Guide</title>
<author title="Author">
  <mail link="swift@gentoo.org">Sven Vermeulen</mail>
</author>
<author title="Contributor">
  <mail link="lostlogic@gentoo.org">Brandon Low</mail>
</author>
<author title="Editor">
  <mail link="dsd@gentoo.org">Daniel Drake</mail>
</author>
<author title="Editor">
  <mail link="carl@gentoo.org">Carl Anderson</mail>
</author>
<author title="Editor">
  <mail link="peesh@gentoo.org">Jorge Paulo</mail>
</author>
<author title="Editor">
  <mail link="bennyc@gentoo.org">Benny Chuang</mail>
</author>
<author title="Editor">
  <mail link="greg_g@gentoo.org">Gregorio Guidi</mail>
</author>
<author title="Editor">
  <mail link="fox2mike@gentoo.org">Shyam Mani</mail>
</author>

<abstract>
This document gives you an overview on all kernel sources that Gentoo
provides through Portage.
</abstract>

<!-- The content of this document is licensed under the CC-BY-SA license -->
<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
<license/>

<version>1.13</version>
<date>2006-01-30</date>

<chapter>
<title>Introduction</title>
<section>
<body>

<p>
As with everything else in Gentoo Linux, the philosophy of the Gentoo 
Kernel team is to give you, the user, as much freedom of choice as 
possible.  If you take a look at the output of <c>emerge -s sources</c> 
you see a large variety of kernels to choose from.  In this document, 
I will attempt to give you a brief rundown of the goals of each of the 
patch sets, which we at Gentoo design, and also explain the other kernel
sources we make available to you.
</p>

</body>
</section>
</chapter>

<chapter>
<title>Supported kernel packages</title>
<section>
<title>genkernel</title>
<body>

<p>
<c>Genkernel</c> is a kernel toolset that can be used to autodetect your
hardware and configure your kernel automatically. This is usually recommended
for users who do not feel comfortable about compiling a kernel manually.
</p>

<p>
For more information, please read the <uri link="/doc/en/genkernel.xml">Gentoo
Linux Genkernel Guide</uri>.
</p>

</body>
</section>
<section>
<title>General purpose: gentoo-sources</title>
<body>

<p>
For most users, we recommend the <c>gentoo-sources</c> kernel. Since the 
2005.0 release, Gentoo Linux uses 2.6 as the default kernel. Unless you are 
specifically using the 2.4 profile, <c>gentoo-sources</c> will be a 2.6 kernel 
on <e>most</e> architectures.
</p>

<p>
<c>gentoo-sources</c> is a kernel based on Linux 2.6, with various kernel
patches included to fix security problems, kernel bugs, and to increase
compatibility with the more uncommon system architectures. Linux 2.6 is
the current official stable kernel tree, and development is progressing
rapidly. For highest performance, best hardware support, and its large
new feature set, we recommend 2.6 over its older 2.4 counterpart.
</p>

<p>
Some of the more uncommon system architectures are not fully compatible with
Linux 2.6, and some users prefer to the tried-and-tested Linux 2.4 kernel;
for this reason we provide <c>gentoo-sources</c> (the 2.4 version). The 
patches included in this kernel are similar to those included in its 2.6 
counterpart, plus a number of patches designed to add functionality and 
improve performance. Linux 2.4 is currently not being developed further - only 
bug and security fixes are being included in the newer releases. If you are 
able to, we suggest that you upgrade to Linux 2.6. You may find the
<uri link="/doc/en/migration-to-2.6.xml">migration document</uri> useful.
</p>

<p>
The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
kernel team. They are brought to you by a group of talented developers, which
can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
maintainer of udev and responsible for the USB and PCI subsystems of the
official Linux kernel.
</p>

</body>
</section>
<section>
<title>Plain kernels: vanilla-sources</title>
<body>

<p>
The next kernel sources that many of you will probably be familiar with 
as Linux users are the <c>vanilla-sources</c>. These are the official kernel
sources released on <uri>http://www.kernel.org/</uri>. Please note that we do
not patch these kernels at all - these are purely for people who wish to run
a completely unmodified Linux kernel.
</p>

<p>
Similar to <c>gentoo-sources</c>, two versions of the kernel can be found 
under this package: 2.4 and 2.6.
</p>

<p>
Linux 2.4 is maintained by Marcelo Tosatti. Linus Torvalds, the original
creator of Linux, handed maintainership of the Linux 2.4 branch over to
Marcelo when Linus went off to start developing the newer 2.6 kernel tree.
Marcelo has done a fine job of keeping 2.4 stable and secure, and is now
only accepting security and bug fixes into the 2.4 kernel tree. Actual
development happens in the Linux 2.6 kernel tree.
</p>

<p>
Linux 2.6 is maintained by Andrew Morton, who works closely with Linus
Torvalds to deliver a fast, powerful, and feature-packed Linux kernel.
Development is happening at incredible pace and this kernel tree is now very
mature.
</p>

</body>
</section>

<section>
<title>For servers: hardened-sources and rsbac-sources</title>
<body>

<p>
<c>hardened-sources</c> is based on the official Linux kernel and is targeted
at our users running Gentoo on server systems. It provides patches for the
various subprojects of Gentoo Hardened (such as support for 
<uri link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and 
<uri link="http://grsecurity.net">grsecurity</uri>), together with
stability/security-enhancements. Like <c>gentoo-sources</c> it comes in 2.6
and 2.4 versions. Check <uri>http://www.gentoo.org/proj/en/hardened/</uri> for 
more information.
</p>

<p>
<c>rsbac-sources</c> contains patches to use Rule Set Based Access Controls
(<uri link="http://www.rsbac.org">RSBAC</uri>) and comes in 2.4 and 2.6
flavours. It is maintained by the <uri link="/proj/en/hardened/rsbac/">RSBAC
project</uri>, a sub-project of Gentoo Hardened.
</p>

<impo>
These kernels provide powerful patches for enhanced security. Please read the
<uri link="/proj/en/hardened/">documentation</uri> before you use them.
</impo>

</body>
</section>
<section>
<title>Architecture dependent kernels</title>
<body>

<p>
<c>alpha-sources</c>, <c>hppa-sources</c>,<c>mips-sources</c>, <c>sh-sources</c>
<c>sparc-sources</c> and <c>xbox-sources</c> are, as their names suggest,
patched to run best on specific architectures. They also contain some of the
patches for hardware and features support from the other patch sets mentioned
above and below.
</p>

</body>
</section>
</chapter>

<chapter>
<title>Unsupported kernel packages</title>
<section>
<body>

<p>
Now I'm going to try to briefly describe some of the other 
<path>sys-kernel/*-sources</path> which you saw scroll by when you ran 
<c>emerge -s sources</c>. Lets take them in alphabetical order. These
kernels are provided as a courtesy only and the various patch sets are not
supported by the Gentoo team.
</p>

</body>
</section>
<section>
<title>ck-sources</title>
<body>

<p>
<c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is 
primarily designed to improve system responsiveness and interactivity and is 
configurable for varying workloads (from servers to desktops). The patchset is 
also quite mature and has been put through numerous iterations of development 
and tuning. The emphasis of each release is on stability and security. Support 
and information is available at <uri>http://kernel.kolivas.org</uri> and in 
<c>#ck</c> on <c>irc.oftc.net</c>.
</p>

</body>
</section>
<section>
<title>git-sources</title>
<body>

<p>
The <c>git-sources</c> package tracks daily snapshots of the upstream
development kernel tree. You should run these kernels if you are interested in
kernel development or testing. Bugreports should go to the <uri
link="http://bugme.osdl.org/">Linux Kernel Bug Tracker</uri> or LKML (Linux
Kernel Mailing List).
</p>

</body>
</section>
<section>
<title>mm-sources</title>
<body>

<p>
The <c>mm-sources</c> are based on the <c>vanilla-sources</c> and contain
Andrew Morton's patch set. They include the experimental and bleeding-edge
features that are going to be included in the official kernel (or that are
going to be rejected because they set your box on fire). They are known to be
always moving at a fast pace and can change radically from one week to the
other; kernel hackers use them as a testing ground for new stuff.
</p>

<p>
If you really want to live on the edge and you think
<c>vanilla-sources</c> are for wussies, then try out
<c>mm-sources</c>. Be warned that this kernel is highly experimental and
doesn't always work as expected.
</p>

</body>
</section>
<section>
<title>openmosix-sources</title>
<body>

<p>
The <c>openmosix-sources</c> are patched to support the openMosix system 
(a cluster oriented kernel patchset like MOSIX but Open Source).  For more
information see <uri>http://www.openmosix.org</uri>.
</p>

</body>
</section>
<section>
<title>openvz-sources</title>
<body>

<p>
OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
isolated, secure virtual private servers (VPSs) or virtual environments on a
single physical server enabling better server utilization and ensuring that
applications do not conflict. For more information, see
<uri>http://www.openvz.org</uri>.
</p>

</body>
</section>
<section>
<title>suspend2-sources</title>
<body>

<p>
The <c>suspend2-sources</c> are patched with both genpatches 
which includes the patches found in gentoo-sources, and <uri
link="http://www.suspend2.net">Software Suspend 2</uri> which is a new 
and improved implementation of suspend-to-disk for the Linux kernel.
</p>

<p>
This kernel is recommended for laptop users who often rely on being able
to suspend their laptop and resume work elsewhere.
</p>

</body>
</section>
<section>
<title>uclinux-sources</title>
<body>

<p>
The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
devices. For more information, see <uri>http://www.uclinux.org</uri>.
</p>

</body>
</section>
<section>
<title>usermode-sources</title>
<body>

<p>
<c>usermode-sources</c> are the User Mode Linux kernel patches.  This 
kernel is designed to allow Linux to run within Linux to run within Linux
to ... User Mode Linux is intended for testing and virtual server support.
For more information about this amazing tribute to the stability and 
scalability of Linux, see <uri>http://user-mode-linux.sourceforge.net</uri>. 
</p>

<p>
For more information on UML and Gentoo, read the 
<uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>.
</p>

</body>
</section>
</chapter>

<chapter>
<title>Previously provided kernel packages</title>
<section>
<title>aa-sources</title>
<body>

<p>
<c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
The upstream maintainer has stopped releasing kernel patchsets, this package
was removed as it went out of date.
</p>

</body>
</section>
<section>
<title>alpha-sources</title>
<body>

<p>
<c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
compatibility for the Alpha architecture. These patches have been developed
and included in the mainline kernel. Alpha users can now run any recent kernel
with no need for extra patches.
</p>

</body>
</section>
<section>
<title>development-sources</title>
<body>

<p>
<c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
be found under the <c>vanilla-sources</c> package.
</p>

</body>
</section>
<section>
<title>gentoo-dev-sources</title>
<body>

<p>
<c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
stability fixes, can now be found under the <c>gentoo-sources</c> package.
</p>

</body>
</section>
<section>
<title>grsec-sources</title>
<body>

<p>
The <c>grsec-sources</c> kernel source used to be patched with the latest
grsecurity updates (grsecurity version 2.0 and up) which included, amongst
other security-related patches, support for PaX. As grsecurity patches are
included in <c>hardened-sources</c>, this package is no longer in Portage.
</p>

</body>
</section>
<section>
<title>hardened-dev-sources</title>
<body>

<p>
<c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
package.
</p>

</body>
</section>
<section>
<title>rsbac-dev-sources</title>
<body>

<p>
The <c>rsbac-dev-sources</c> kernels can now be found under the
<c>rsbac-sources</c> package.
</p>

</body>
</section>
<section>
<title>selinux-sources</title>
<body>

<p>
<c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
has been obsoleted by security development in the 2.6 tree. SELinux
functionality can be found in the <c>hardened-sources</c> package.
</p>

</body>
</section>
<section>
<title>win4lin-sources</title>
<body>

<p>
<c>win4lin-sources</c> were patched to support the userland win4lin tools 
that allow Linux users to run many Microsoft Windows (TM) applications
at almost native speeds. This was removed due to security issues.
</p>

</body>
</section>
</chapter>
</guide>
1	swift	1.1	<?xml version="1.0" encoding="UTF-8"?>
2	flammie	1.39	<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.38 2006/01/30 02:42:45 vanquirius Exp $ -->
3	swift	1.1
4			<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
5			<guide link="/doc/en/gentoo-kernel.xml">
6			<title>Gentoo Linux Kernel Guide</title>
7			<author title="Author">
8	swift	1.17	<mail link="swift@gentoo.org">Sven Vermeulen</mail>
9	swift	1.1	</author>
10			<author title="Contributor">
11	swift	1.17	<mail link="lostlogic@gentoo.org">Brandon Low</mail>
12	swift	1.1	</author>
13			<author title="Editor">
14	swift	1.17	<mail link="dsd@gentoo.org">Daniel Drake</mail>
15	swift	1.1	</author>
16			<author title="Editor">
17	swift	1.17	<mail link="carl@gentoo.org">Carl Anderson</mail>
18			</author>
19			<author title="Editor">
20			<mail link="peesh@gentoo.org">Jorge Paulo</mail>
21	swift	1.1	</author>
22	bennyc	1.9	<author title="Editor">
23			<mail link="bennyc@gentoo.org">Benny Chuang</mail>
24			</author>
25	neysx	1.10	<author title="Editor">
26	neysx	1.22	<mail link="greg_g@gentoo.org">Gregorio Guidi</mail>
27	neysx	1.10	</author>
28	fox2mike	1.35	<author title="Editor">
29			<mail link="fox2mike@gentoo.org">Shyam Mani</mail>
30			</author>
31	swift	1.1
32			<abstract>
33	bennyc	1.9	This document gives you an overview on all kernel sources that Gentoo
34	swift	1.1	provides through Portage.
35			</abstract>
36
37	fox2mike	1.35	<!-- The content of this document is licensed under the CC-BY-SA license -->
38			<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
39	swift	1.6	<license/>
40
41	vanquirius	1.38	<version>1.13</version>
42			<date>2006-01-30</date>
43	swift	1.1
44			<chapter>
45			<title>Introduction</title>
46			<section>
47			<body>
48
49			<p>
50			As with everything else in Gentoo Linux, the philosophy of the Gentoo
51			Kernel team is to give you, the user, as much freedom of choice as
52			possible. If you take a look at the output of <c>emerge -s sources</c>
53			you see a large variety of kernels to choose from. In this document,
54			I will attempt to give you a brief rundown of the goals of each of the
55			patch sets, which we at Gentoo design, and also explain the other kernel
56			sources we make available to you.
57			</p>
58
59			</body>
60			</section>
61			</chapter>
62
63			<chapter>
64	swift	1.17	<title>Supported kernel packages</title>
65	swift	1.1	<section>
66	bennyc	1.9	<title>genkernel</title>
67			<body>
68
69			<p>
70			<c>Genkernel</c> is a kernel toolset that can be used to autodetect your
71			hardware and configure your kernel automatically. This is usually recommended
72			for users who do not feel comfortable about compiling a kernel manually.
73			</p>
74
75	cam	1.11	<p>
76			For more information, please read the <uri link="/doc/en/genkernel.xml">Gentoo
77			Linux Genkernel Guide</uri>.
78			</p>
79
80	bennyc	1.9	</body>
81			</section>
82			<section>
83	swift	1.26	<title>General purpose: gentoo-sources</title>
84	swift	1.1	<body>
85
86			<p>
87	swift	1.26	For most users, we recommend the <c>gentoo-sources</c> kernel. Since the
88			2005.0 release, Gentoo Linux uses 2.6 as the default kernel. Unless you are
89			specifically using the 2.4 profile, <c>gentoo-sources</c> will be a 2.6 kernel
90			on <e>most</e> architectures.
91	swift	1.1	</p>
92
93			<p>
94	swift	1.26	<c>gentoo-sources</c> is a kernel based on Linux 2.6, with various kernel
95	swift	1.24	patches included to fix security problems, kernel bugs, and to increase
96			compatibility with the more uncommon system architectures. Linux 2.6 is
97			the current official stable kernel tree, and development is progressing
98			rapidly. For highest performance, best hardware support, and its large
99			new feature set, we recommend 2.6 over its older 2.4 counterpart.
100	swift	1.17	</p>
101
102			<p>
103	swift	1.24	Some of the more uncommon system architectures are not fully compatible with
104			Linux 2.6, and some users prefer to the tried-and-tested Linux 2.4 kernel;
105	swift	1.26	for this reason we provide <c>gentoo-sources</c> (the 2.4 version). The
106			patches included in this kernel are similar to those included in its 2.6
107			counterpart, plus a number of patches designed to add functionality and
108			improve performance. Linux 2.4 is currently not being developed further - only
109			bug and security fixes are being included in the newer releases. If you are
110			able to, we suggest that you upgrade to Linux 2.6. You may find the
111	alin	1.34	<uri link="/doc/en/migration-to-2.6.xml">migration document</uri> useful.
112	swift	1.24	</p>
113
114			<p>
115			The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
116			kernel team. They are brought to you by a group of talented developers, which
117			can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
118			maintainer of udev and responsible for the USB and PCI subsystems of the
119			official Linux kernel.
120	swift	1.1	</p>
121
122			</body>
123			</section>
124			<section>
125	swift	1.24	<title>Plain kernels: vanilla-sources</title>
126	swift	1.1	<body>
127
128			<p>
129			The next kernel sources that many of you will probably be familiar with
130	swift	1.24	as Linux users are the <c>vanilla-sources</c>. These are the official kernel
131			sources released on <uri>http://www.kernel.org/</uri>. Please note that we do
132			not patch these kernels at all - these are purely for people who wish to run
133			a completely unmodified Linux kernel.
134			</p>
135
136			<p>
137	swift	1.26	Similar to <c>gentoo-sources</c>, two versions of the kernel can be found
138			under this package: 2.4 and 2.6.
139	swift	1.24	</p>
140
141			<p>
142			Linux 2.4 is maintained by Marcelo Tosatti. Linus Torvalds, the original
143			creator of Linux, handed maintainership of the Linux 2.4 branch over to
144			Marcelo when Linus went off to start developing the newer 2.6 kernel tree.
145			Marcelo has done a fine job of keeping 2.4 stable and secure, and is now
146			only accepting security and bug fixes into the 2.4 kernel tree. Actual
147			development happens in the Linux 2.6 kernel tree.
148	swift	1.1	</p>
149
150			<p>
151	swift	1.24	Linux 2.6 is maintained by Andrew Morton, who works closely with Linus
152			Torvalds to deliver a fast, powerful, and feature-packed Linux kernel.
153			Development is happening at incredible pace and this kernel tree is now very
154			mature.
155	swift	1.5	</p>
156
157			</body>
158			</section>
159	swift	1.17
160	swift	1.5	<section>
161	fox2mike	1.31	<title>For servers: hardened-sources and rsbac-sources</title>
162	swift	1.1	<body>
163
164			<p>
165	fox2mike	1.32	<c>hardened-sources</c> is based on the official Linux kernel and is targeted
166	fox2mike	1.31	at our users running Gentoo on server systems. It provides patches for the
167			various subprojects of Gentoo Hardened (such as support for
168			<uri link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and
169			<uri link="http://grsecurity.net">grsecurity</uri>), together with
170			stability/security-enhancements. Like <c>gentoo-sources</c> it comes in 2.6
171			and 2.4 versions. Check <uri>http://www.gentoo.org/proj/en/hardened/</uri> for
172			more information.
173	swift	1.17	</p>
174
175			<p>
176	neysx	1.29	<c>rsbac-sources</c> contains patches to use Rule Set Based Access Controls
177	fox2mike	1.31	(<uri link="http://www.rsbac.org">RSBAC</uri>) and comes in 2.4 and 2.6
178			flavours. It is maintained by the <uri link="/proj/en/hardened/rsbac/">RSBAC
179	fox2mike	1.32	project</uri>, a sub-project of Gentoo Hardened.
180	swift	1.1	</p>
181
182	neysx	1.29	<impo>
183			These kernels provide powerful patches for enhanced security. Please read the
184			<uri link="/proj/en/hardened/">documentation</uri> before you use them.
185			</impo>
186	swift	1.1
187			</body>
188			</section>
189			<section>
190			<title>Architecture dependent kernels</title>
191			<body>
192
193			<p>
194	fox2mike	1.35	<c>alpha-sources</c>, <c>hppa-sources</c>,<c>mips-sources</c>, <c>sh-sources</c>
195			<c>sparc-sources</c> and <c>xbox-sources</c> are, as their names suggest,
196			patched to run best on specific architectures. They also contain some of the
197			patches for hardware and features support from the other patch sets mentioned
198			above and below.
199	swift	1.1	</p>
200
201			</body>
202			</section>
203			</chapter>
204
205			<chapter>
206	swift	1.17	<title>Unsupported kernel packages</title>
207	swift	1.1	<section>
208			<body>
209
210			<p>
211			Now I'm going to try to briefly describe some of the other
212			<path>sys-kernel/*-sources</path> which you saw scroll by when you ran
213	swift	1.17	<c>emerge -s sources</c>. Lets take them in alphabetical order. These
214			kernels are provided as a courtesy only and the various patch sets are not
215	swift	1.19	supported by the Gentoo team.
216	swift	1.1	</p>
217
218			</body>
219			</section>
220			<section>
221			<title>ck-sources</title>
222			<body>
223
224			<p>
225	swift	1.25	<c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is
226			primarily designed to improve system responsiveness and interactivity and is
227			configurable for varying workloads (from servers to desktops). The patchset is
228			also quite mature and has been put through numerous iterations of development
229			and tuning. The emphasis of each release is on stability and security. Support
230			and information is available at <uri>http://kernel.kolivas.org</uri> and in
231			<c>#ck</c> on <c>irc.oftc.net</c>.
232	swift	1.1	</p>
233
234			</body>
235			</section>
236			<section>
237	jkt	1.36	<title>git-sources</title>
238			<body>
239
240			<p>
241			The <c>git-sources</c> package tracks daily snapshots of the upstream
242			development kernel tree. You should run these kernels if you are interested in
243			kernel development or testing. Bugreports should go to the <uri
244	jkt	1.37	link="http://bugme.osdl.org/">Linux Kernel Bug Tracker</uri> or LKML (Linux
245	jkt	1.36	Kernel Mailing List).
246			</p>
247
248			</body>
249			</section>
250			<section>
251	swift	1.1	<title>mm-sources</title>
252			<body>
253
254			<p>
255	neysx	1.29	The <c>mm-sources</c> are based on the <c>vanilla-sources</c> and contain
256	neysx	1.10	Andrew Morton's patch set. They include the experimental and bleeding-edge
257			features that are going to be included in the official kernel (or that are
258			going to be rejected because they set your box on fire). They are known to be
259			always moving at a fast pace and can change radically from one week to the
260			other; kernel hackers use them as a testing ground for new stuff.
261	swift	1.1	</p>
262
263			<p>
264	swift	1.17	If you really want to live on the edge and you think
265	neysx	1.29	<c>vanilla-sources</c> are for wussies, then try out
266	swift	1.17	<c>mm-sources</c>. Be warned that this kernel is highly experimental and
267			doesn't always work as expected.
268	swift	1.1	</p>
269
270			</body>
271			</section>
272			<section>
273			<title>openmosix-sources</title>
274			<body>
275
276			<p>
277			The <c>openmosix-sources</c> are patched to support the openMosix system
278	vanquirius	1.38	(a cluster oriented kernel patchset like MOSIX but Open Source). For more
279			information see <uri>http://www.openmosix.org</uri>.
280	swift	1.1	</p>
281
282			</body>
283			</section>
284			<section>
285	fox2mike	1.35	<title>openvz-sources</title>
286			<body>
287
288			<p>
289	flammie	1.39	OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
290	fox2mike	1.35	isolated, secure virtual private servers (VPSs) or virtual environments on a
291			single physical server enabling better server utilization and ensuring that
292			applications do not conflict. For more information, see
293	flammie	1.39	<uri>http://www.openvz.org</uri>.
294	fox2mike	1.35	</p>
295
296			</body>
297			</section>
298			<section>
299			<title>suspend2-sources</title>
300	swift	1.1	<body>
301
302			<p>
303	fox2mike	1.35	The <c>suspend2-sources</c> are patched with both genpatches
304			which includes the patches found in gentoo-sources, and <uri
305			link="http://www.suspend2.net">Software Suspend 2</uri> which is a new
306			and improved implementation of suspend-to-disk for the Linux kernel.
307	swift	1.1	</p>
308
309			<p>
310	fox2mike	1.35	This kernel is recommended for laptop users who often rely on being able
311			to suspend their laptop and resume work elsewhere.
312	swift	1.1	</p>
313
314			</body>
315			</section>
316			<section>
317	fox2mike	1.35	<title>uclinux-sources</title>
318	swift	1.1	<body>
319
320			<p>
321	fox2mike	1.35	The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
322			devices. For more information, see <uri>http://www.uclinux.org</uri>.
323	swift	1.1	</p>
324
325			</body>
326			</section>
327	swift	1.33	<section>
328	fox2mike	1.35	<title>usermode-sources</title>
329	swift	1.33	<body>
330
331			<p>
332	fox2mike	1.35	<c>usermode-sources</c> are the User Mode Linux kernel patches. This
333			kernel is designed to allow Linux to run within Linux to run within Linux
334			to ... User Mode Linux is intended for testing and virtual server support.
335			For more information about this amazing tribute to the stability and
336			scalability of Linux, see <uri>http://user-mode-linux.sourceforge.net</uri>.
337	swift	1.33	</p>
338
339			<p>
340	fox2mike	1.35	For more information on UML and Gentoo, read the
341			<uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>.
342	swift	1.33	</p>
343
344			</body>
345			</section>
346	swift	1.1	</chapter>
347	swift	1.17
348			<chapter>
349			<title>Previously provided kernel packages</title>
350			<section>
351	swift	1.20	<title>aa-sources</title>
352			<body>
353
354			<p>
355			<c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
356			The upstream maintainer has stopped releasing kernel patchsets, this package
357			was removed as it went out of date.
358			</p>
359
360			</body>
361			</section>
362			<section>
363			<title>alpha-sources</title>
364			<body>
365
366			<p>
367			<c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
368			compatibility for the Alpha architecture. These patches have been developed
369			and included in the mainline kernel. Alpha users can now run any recent kernel
370			with no need for extra patches.
371			</p>
372
373			</body>
374			</section>
375			<section>
376	swift	1.24	<title>development-sources</title>
377			<body>
378
379			<p>
380			<c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
381			be found under the <c>vanilla-sources</c> package.
382			</p>
383
384			</body>
385			</section>
386			<section>
387	alin	1.28	<title>gentoo-dev-sources</title>
388	swift	1.24	<body>
389
390			<p>
391	alin	1.28	<c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
392	swift	1.24	stability fixes, can now be found under the <c>gentoo-sources</c> package.
393			</p>
394
395			</body>
396			</section>
397			<section>
398	fox2mike	1.35	<title>grsec-sources</title>
399			<body>
400
401			<p>
402			The <c>grsec-sources</c> kernel source used to be patched with the latest
403			grsecurity updates (grsecurity version 2.0 and up) which included, amongst
404			other security-related patches, support for PaX. As grsecurity patches are
405			included in <c>hardened-sources</c>, this package is no longer in Portage.
406			</p>
407
408			</body>
409			</section>
410			<section>
411	fox2mike	1.31	<title>hardened-dev-sources</title>
412			<body>
413
414			<p>
415			<c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
416			package.
417			</p>
418
419			</body>
420			</section>
421			<section>
422	swift	1.24	<title>rsbac-dev-sources</title>
423			<body>
424
425			<p>
426			The <c>rsbac-dev-sources</c> kernels can now be found under the
427			<c>rsbac-sources</c> package.
428			</p>
429
430			</body>
431			</section>
432			<section>
433	swift	1.20	<title>selinux-sources</title>
434			<body>
435
436			<p>
437			<c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
438	fox2mike	1.32	has been obsoleted by security development in the 2.6 tree. SELinux
439	fox2mike	1.31	functionality can be found in the <c>hardened-sources</c> package.
440	swift	1.18	</p>
441
442			</body>
443			</section>
444	fox2mike	1.35	<section>
445			<title>win4lin-sources</title>
446			<body>
447
448			<p>
449			<c>win4lin-sources</c> were patched to support the userland win4lin tools
450			that allow Linux users to run many Microsoft Windows (TM) applications
451			at almost native speeds. This was removed due to security issues.
452			</p>
453
454			</body>
455			</section>
456	swift	1.17	</chapter>
457	swift	1.1	</guide>