doc/en/gentoo-kernel.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.55 2009/02/14 11:25:12 neysx 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>
<author title="Editor">
  <mail link="nightmorph@gentoo.org">Joshua Saddler</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>1.23</version>
<date>2009-10-16</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>

<p>
Linux 2.4 is maintained by Willy Tarreau. Linus Torvalds, the original creator
of Linux, handed maintainership of the Linux 2.4 branch over to Marcelo Tosatti
when Linus went off to start developing the newer 2.6 kernel tree. Marcelo did a
fine job of keeping 2.4 stable and secure, and has since handed over
maintainership to Willy. Note that only security and bug fixes are accepted 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>

<p>
Some of the more uncommon system architectures are not fully compatible with
Linux 2.6, and some users prefer the tried-and-tested Linux 2.4 kernel. However,
please note that 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>

</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.
<c>gentoo-sources</c> is a kernel based on Linux 2.6, lightly patched to fix
security problems, kernel bugs, and to increase compatibility with the more
uncommon system architectures.
</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>For servers: hardened-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. Check
<uri>http://www.gentoo.org/proj/en/hardened/</uri> for more information.
</p>

<impo>
This kernel provides powerful patches for enhanced security. Please read the
<uri link="/proj/en/hardened/">documentation</uri> before you use it.
</impo>

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

<p>
<c>cell-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>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://bugzilla.kernel.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>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>tuxonice-sources</title>
<body>

<p>
The <c>tuxonice-sources</c> (formerly <c>suspend2-sources</c>) are patched with
both genpatches which includes the patches found in gentoo-sources, and <uri
link="http://www.tuxonice.net">TuxOnIce</uri> which is an improved
implementation of suspend-to-disk for the Linux kernel, formerly known as
<e>suspend2</e>.
</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>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>
<section>
<title>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. We recommend that you use <c>gentoo-sources</c>
instead.
</p>

<p>
Two versions of the kernel can be found under this package: 2.4 and 2.6.
</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>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>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>hppa-sources</title>
<body>

<p>
<c>hppa-sources</c> was a 2.6 kernel with patches applied to improve hardware
compatibility for the HPPA architecture. These patches have been developed
and included in the mainline kernel. HPPA users can now run any recent kernel
with no need for extra patches.
</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>rsbac-sources</title>
<body>

<p>
<c>rsbac-sources</c> was a 2.6-based kernel. It contained patches to use Rule
Set Based Access Controls (<uri link="http://www.rsbac.org">RSBAC</uri>). It has
been removed due to lack of maintainers. Use <c>hardened-sources</c> if you need
additional security features.
</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>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>. Lack of
security patches as well as hardware to test on were the reasons this is no
longer in the tree.
</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	nightmorph	1.56	<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.55 2009/02/14 11:25:12 neysx Exp $ -->
3	swift	1.1
4			<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
5	swift	1.53	<guide link="/doc/en/gentoo-kernel.xml">
6	swift	1.1	<title>Gentoo Linux Kernel Guide</title>
7			<author title="Author">
8	nightmorph	1.44	<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	nightmorph	1.48	<author title="Editor">
32	nightmorph	1.47	<mail link="nightmorph@gentoo.org">Joshua Saddler</mail>
33			</author>
34	swift	1.1
35			<abstract>
36	bennyc	1.9	This document gives you an overview on all kernel sources that Gentoo
37	swift	1.1	provides through Portage.
38			</abstract>
39
40	fox2mike	1.35	<!-- The content of this document is licensed under the CC-BY-SA license -->
41			<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
42	swift	1.6	<license/>
43
44	nightmorph	1.56	<version>1.23</version>
45			<date>2009-10-16</date>
46	swift	1.1
47			<chapter>
48			<title>Introduction</title>
49			<section>
50			<body>
51
52			<p>
53	swift	1.53	As with everything else in Gentoo Linux, the philosophy of the Gentoo
54			Kernel team is to give you, the user, as much freedom of choice as
55			possible. If you take a look at the output of <c>emerge -s sources</c>
56			you see a large variety of kernels to choose from. In this document,
57			I will attempt to give you a brief rundown of the goals of each of the
58	swift	1.1	patch sets, which we at Gentoo design, and also explain the other kernel
59			sources we make available to you.
60			</p>
61
62	nightmorph	1.45	<p>
63	nightmorph	1.47	Linux 2.4 is maintained by Willy Tarreau. Linus Torvalds, the original creator
64			of Linux, handed maintainership of the Linux 2.4 branch over to Marcelo Tosatti
65			when Linus went off to start developing the newer 2.6 kernel tree. Marcelo did a
66			fine job of keeping 2.4 stable and secure, and has since handed over
67			maintainership to Willy. Note that only security and bug fixes are accepted into
68			the 2.4 kernel tree. Actual development happens in the Linux 2.6 kernel tree.
69	nightmorph	1.46	</p>
70
71			<p>
72			Linux 2.6 is maintained by Andrew Morton, who works closely with Linus
73			Torvalds to deliver a fast, powerful, and feature-packed Linux kernel.
74			Development is happening at incredible pace and this kernel tree is now very
75			mature.
76			</p>
77
78			<p>
79	nightmorph	1.45	Some of the more uncommon system architectures are not fully compatible with
80			Linux 2.6, and some users prefer the tried-and-tested Linux 2.4 kernel. However,
81			please note that Linux 2.4 is currently not being developed further - only bug
82			and security fixes are being included in the newer releases. If you are able to,
83			we suggest that you upgrade to Linux 2.6. You may find the <uri
84			link="/doc/en/migration-to-2.6.xml">migration document</uri> useful.
85			</p>
86
87	swift	1.1	</body>
88			</section>
89			</chapter>
90
91			<chapter>
92	swift	1.17	<title>Supported kernel packages</title>
93	swift	1.1	<section>
94	bennyc	1.9	<title>genkernel</title>
95			<body>
96
97			<p>
98			<c>Genkernel</c> is a kernel toolset that can be used to autodetect your
99			hardware and configure your kernel automatically. This is usually recommended
100			for users who do not feel comfortable about compiling a kernel manually.
101			</p>
102
103	cam	1.11	<p>
104			For more information, please read the <uri link="/doc/en/genkernel.xml">Gentoo
105			Linux Genkernel Guide</uri>.
106			</p>
107
108	bennyc	1.9	</body>
109			</section>
110			<section>
111	swift	1.26	<title>General purpose: gentoo-sources</title>
112	swift	1.1	<body>
113
114			<p>
115	nightmorph	1.54	For most users, we recommend the <c>gentoo-sources</c> kernel.
116	nightmorph	1.45	<c>gentoo-sources</c> is a kernel based on Linux 2.6, lightly patched to fix
117			security problems, kernel bugs, and to increase compatibility with the more
118	nightmorph	1.54	uncommon system architectures.
119	swift	1.24	</p>
120
121			<p>
122			The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
123			kernel team. They are brought to you by a group of talented developers, which
124			can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
125			maintainer of udev and responsible for the USB and PCI subsystems of the
126			official Linux kernel.
127	swift	1.1	</p>
128
129			</body>
130			</section>
131			<section>
132	nightmorph	1.56	<title>For servers: hardened-sources</title>
133	swift	1.1	<body>
134
135			<p>
136	nightmorph	1.54	<c>hardened-sources</c> is based on the official Linux kernel and is targeted at
137			our users running Gentoo on server systems. It provides patches for the various
138			subprojects of Gentoo Hardened (such as support for <uri
139			link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and <uri
140			link="http://grsecurity.net">grsecurity</uri>), together with
141			stability/security-enhancements. Check
142			<uri>http://www.gentoo.org/proj/en/hardened/</uri> for more information.
143	swift	1.17	</p>
144
145	neysx	1.29	<impo>
146	nightmorph	1.56	This kernel provides powerful patches for enhanced security. Please read the
147			<uri link="/proj/en/hardened/">documentation</uri> before you use it.
148	neysx	1.29	</impo>
149	swift	1.1
150			</body>
151			</section>
152			<section>
153			<title>Architecture dependent kernels</title>
154			<body>
155
156			<p>
157	nightmorph	1.56	<c>cell-sources</c>, <c>mips-sources</c>, <c>sh-sources</c>,
158	nightmorph	1.48	<c>sparc-sources</c>, and <c>xbox-sources</c> are, as their names suggest,
159			patched to run best on specific architectures. They also contain some of the
160			patches for hardware and features support from the other patch sets mentioned
161			above and below.
162	swift	1.1	</p>
163
164			</body>
165			</section>
166			</chapter>
167
168			<chapter>
169	swift	1.17	<title>Unsupported kernel packages</title>
170	swift	1.1	<section>
171			<body>
172
173			<p>
174	swift	1.53	Now I'm going to try to briefly describe some of the other
175			<path>sys-kernel/*-sources</path> which you saw scroll by when you ran
176	swift	1.17	<c>emerge -s sources</c>. Lets take them in alphabetical order. These
177			kernels are provided as a courtesy only and the various patch sets are not
178	swift	1.19	supported by the Gentoo team.
179	swift	1.1	</p>
180
181			</body>
182			</section>
183			<section>
184	jkt	1.36	<title>git-sources</title>
185			<body>
186
187			<p>
188			The <c>git-sources</c> package tracks daily snapshots of the upstream
189			development kernel tree. You should run these kernels if you are interested in
190			kernel development or testing. Bugreports should go to the <uri
191	neysx	1.55	link="http://bugzilla.kernel.org/">Linux Kernel Bug Tracker</uri> or LKML
192			(Linux Kernel Mailing List).
193	jkt	1.36	</p>
194
195			</body>
196			</section>
197			<section>
198	swift	1.1	<title>mm-sources</title>
199			<body>
200
201			<p>
202	neysx	1.29	The <c>mm-sources</c> are based on the <c>vanilla-sources</c> and contain
203	neysx	1.10	Andrew Morton's patch set. They include the experimental and bleeding-edge
204			features that are going to be included in the official kernel (or that are
205			going to be rejected because they set your box on fire). They are known to be
206			always moving at a fast pace and can change radically from one week to the
207			other; kernel hackers use them as a testing ground for new stuff.
208	swift	1.1	</p>
209
210			<p>
211	swift	1.17	If you really want to live on the edge and you think
212	neysx	1.29	<c>vanilla-sources</c> are for wussies, then try out
213	swift	1.17	<c>mm-sources</c>. Be warned that this kernel is highly experimental and
214			doesn't always work as expected.
215	swift	1.1	</p>
216
217			</body>
218			</section>
219			<section>
220	fox2mike	1.35	<title>openvz-sources</title>
221			<body>
222
223			<p>
224	flammie	1.39	OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
225	fox2mike	1.35	isolated, secure virtual private servers (VPSs) or virtual environments on a
226			single physical server enabling better server utilization and ensuring that
227			applications do not conflict. For more information, see
228	flammie	1.39	<uri>http://www.openvz.org</uri>.
229	fox2mike	1.35	</p>
230
231			</body>
232			</section>
233			<section>
234	swift	1.51	<title>tuxonice-sources</title>
235	swift	1.1	<body>
236
237			<p>
238	swift	1.52	The <c>tuxonice-sources</c> (formerly <c>suspend2-sources</c>) are patched with
239			both genpatches which includes the patches found in gentoo-sources, and <uri
240	swift	1.53	link="http://www.tuxonice.net">TuxOnIce</uri> which is an improved
241			implementation of suspend-to-disk for the Linux kernel, formerly known as
242	swift	1.52	<e>suspend2</e>.
243	swift	1.1	</p>
244
245			<p>
246	fox2mike	1.35	This kernel is recommended for laptop users who often rely on being able
247			to suspend their laptop and resume work elsewhere.
248	swift	1.1	</p>
249
250			</body>
251			</section>
252			<section>
253	fox2mike	1.35	<title>usermode-sources</title>
254	swift	1.33	<body>
255
256			<p>
257	swift	1.53	<c>usermode-sources</c> are the User Mode Linux kernel patches. This
258	fox2mike	1.35	kernel is designed to allow Linux to run within Linux to run within Linux
259			to ... User Mode Linux is intended for testing and virtual server support.
260	swift	1.53	For more information about this amazing tribute to the stability and
261			scalability of Linux, see <uri>http://user-mode-linux.sourceforge.net</uri>.
262	swift	1.33	</p>
263
264			<p>
265	swift	1.53	For more information on UML and Gentoo, read the
266	fox2mike	1.35	<uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>.
267	swift	1.33	</p>
268
269			</body>
270			</section>
271	nightmorph	1.45	<section>
272			<title>vanilla-sources</title>
273			<body>
274
275			<p>
276			The next kernel sources that many of you will probably be familiar with as Linux
277			users are the <c>vanilla-sources</c>. These are the official kernel sources
278			released on <uri>http://www.kernel.org/</uri>. Please note that we do not patch
279			these kernels at all - these are purely for people who wish to run a completely
280			unmodified Linux kernel. We recommend that you use <c>gentoo-sources</c>
281			instead.
282			</p>
283
284			<p>
285	nightmorph	1.54	Two versions of the kernel can be found under this package: 2.4 and 2.6.
286	nightmorph	1.45	</p>
287
288			</body>
289			</section>
290	swift	1.1	</chapter>
291	swift	1.17
292			<chapter>
293			<title>Previously provided kernel packages</title>
294			<section>
295	swift	1.20	<title>aa-sources</title>
296			<body>
297
298			<p>
299			<c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
300			The upstream maintainer has stopped releasing kernel patchsets, this package
301			was removed as it went out of date.
302			</p>
303
304			</body>
305			</section>
306			<section>
307			<title>alpha-sources</title>
308			<body>
309
310			<p>
311			<c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
312			compatibility for the Alpha architecture. These patches have been developed
313			and included in the mainline kernel. Alpha users can now run any recent kernel
314			with no need for extra patches.
315			</p>
316
317			</body>
318			</section>
319			<section>
320	neysx	1.50	<title>ck-sources</title>
321			<body>
322
323			<p>
324	swift	1.53	<c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is
325			primarily designed to improve system responsiveness and interactivity and is
326			configurable for varying workloads (from servers to desktops). The patchset is
327			also quite mature and has been put through numerous iterations of development
328			and tuning. The emphasis of each release is on stability and security. Support
329			and information is available at <uri>http://kernel.kolivas.org</uri> and in
330	neysx	1.50	<c>#ck</c> on <c>irc.oftc.net</c>.
331			</p>
332
333			</body>
334			</section>
335			<section>
336	swift	1.24	<title>development-sources</title>
337			<body>
338
339			<p>
340			<c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
341			be found under the <c>vanilla-sources</c> package.
342			</p>
343
344			</body>
345			</section>
346			<section>
347	alin	1.28	<title>gentoo-dev-sources</title>
348	swift	1.24	<body>
349
350			<p>
351	alin	1.28	<c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
352	swift	1.24	stability fixes, can now be found under the <c>gentoo-sources</c> package.
353			</p>
354
355			</body>
356			</section>
357			<section>
358	fox2mike	1.35	<title>grsec-sources</title>
359			<body>
360
361			<p>
362			The <c>grsec-sources</c> kernel source used to be patched with the latest
363			grsecurity updates (grsecurity version 2.0 and up) which included, amongst
364			other security-related patches, support for PaX. As grsecurity patches are
365			included in <c>hardened-sources</c>, this package is no longer in Portage.
366			</p>
367
368			</body>
369			</section>
370			<section>
371	fox2mike	1.31	<title>hardened-dev-sources</title>
372			<body>
373
374			<p>
375			<c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
376			package.
377			</p>
378
379			</body>
380			</section>
381			<section>
382	nightmorph	1.56	<title>hppa-sources</title>
383			<body>
384
385			<p>
386			<c>hppa-sources</c> was a 2.6 kernel with patches applied to improve hardware
387			compatibility for the HPPA architecture. These patches have been developed
388			and included in the mainline kernel. HPPA users can now run any recent kernel
389			with no need for extra patches.
390			</p>
391
392			</body>
393			</section>
394			<section>
395	swift	1.24	<title>rsbac-dev-sources</title>
396			<body>
397
398			<p>
399			The <c>rsbac-dev-sources</c> kernels can now be found under the
400			<c>rsbac-sources</c> package.
401			</p>
402
403			</body>
404			</section>
405			<section>
406	nightmorph	1.56	<title>rsbac-sources</title>
407			<body>
408
409			<p>
410			<c>rsbac-sources</c> was a 2.6-based kernel. It contained patches to use Rule
411			Set Based Access Controls (<uri link="http://www.rsbac.org">RSBAC</uri>). It has
412			been removed due to lack of maintainers. Use <c>hardened-sources</c> if you need
413			additional security features.
414			</p>
415
416			</body>
417			</section>
418			<section>
419	swift	1.20	<title>selinux-sources</title>
420			<body>
421
422			<p>
423			<c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
424	fox2mike	1.32	has been obsoleted by security development in the 2.6 tree. SELinux
425	fox2mike	1.31	functionality can be found in the <c>hardened-sources</c> package.
426	swift	1.18	</p>
427
428			</body>
429			</section>
430	fox2mike	1.35	<section>
431	fox2mike	1.40	<title>uclinux-sources</title>
432			<body>
433
434			<p>
435			The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
436			devices. For more information, see <uri>http://www.uclinux.org</uri>. Lack of
437	swift	1.53	security patches as well as hardware to test on were the reasons this is no
438			longer in the tree.
439	fox2mike	1.40	</p>
440
441			</body>
442			</section>
443			<section>
444	fox2mike	1.35	<title>win4lin-sources</title>
445			<body>
446
447			<p>
448	swift	1.53	<c>win4lin-sources</c> were patched to support the userland win4lin tools
449	fox2mike	1.35	that allow Linux users to run many Microsoft Windows (TM) applications
450			at almost native speeds. This was removed due to security issues.
451			</p>
452
453			</body>
454			</section>
455	swift	1.17	</chapter>
456	swift	1.1	</guide>