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1<?xml version="1.0" encoding="UTF-8"?> 1<?xml version="1.0" encoding="UTF-8"?>
2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.8 2004/07/02 09:56:48 swift Exp $ --> 2<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.50 2008/02/03 14:42:25 neysx Exp $ -->
3 3
4<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 4<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
5<guide link="/doc/en/gentoo-kernel.xml"> 5<guide>
6<title>Gentoo Linux Kernel Guide</title> 6<title>Gentoo Linux Kernel Guide</title>
7<author title="Author"> 7<author title="Author">
8 <mail link="swift@gentoo.org">Sven Vermeulen</mail> 8 <mail link="swift@gentoo.org">Sven Vermeulen</mail>
9</author> 9</author>
10<author title="Contributor"> 10<author title="Contributor">
11 <mail link="lostlogic@gentoo.org">Brandon Low</mail> 11 <mail link="lostlogic@gentoo.org">Brandon Low</mail>
12</author> 12</author>
13<author title="Editor"> 13<author title="Editor">
14 <mail link="dsd@gentoo.org">Daniel Drake</mail>
15</author>
16<author title="Editor">
14 <mail link="carl@gentoo.org">Carl Anderson</mail> 17 <mail link="carl@gentoo.org">Carl Anderson</mail>
15</author> 18</author>
16<author title="Editor"> 19<author title="Editor">
17 <mail link="peesh@gentoo.org">Jorge Paulo</mail> 20 <mail link="peesh@gentoo.org">Jorge Paulo</mail>
21</author>
22<author title="Editor">
23 <mail link="bennyc@gentoo.org">Benny Chuang</mail>
24</author>
25<author title="Editor">
26 <mail link="greg_g@gentoo.org">Gregorio Guidi</mail>
27</author>
28<author title="Editor">
29 <mail link="fox2mike@gentoo.org">Shyam Mani</mail>
30</author>
31<author title="Editor">
32 <mail link="nightmorph@gentoo.org">Joshua Saddler</mail>
18</author> 33</author>
19 34
20<abstract> 35<abstract>
21This document gives you an overview on all kernelsources that Gentoo 36This document gives you an overview on all kernel sources that Gentoo
22provides through Portage. 37provides through Portage.
23</abstract> 38</abstract>
24 39
40<!-- The content of this document is licensed under the CC-BY-SA license -->
41<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
25<license/> 42<license/>
26 43
27<version>0.4</version> 44<version>1.19</version>
28<date>July 02, 2004</date> 45<date>2008-02-03</date>
29 46
30<chapter> 47<chapter>
31<title>Introduction</title> 48<title>Introduction</title>
32<section> 49<section>
33<body> 50<body>
40I will attempt to give you a brief rundown of the goals of each of the 57I will attempt to give you a brief rundown of the goals of each of the
41patch sets, which we at Gentoo design, and also explain the other kernel 58patch sets, which we at Gentoo design, and also explain the other kernel
42sources we make available to you. 59sources we make available to you.
43</p> 60</p>
44 61
62<p>
63Linux 2.4 is maintained by Willy Tarreau. Linus Torvalds, the original creator
64of Linux, handed maintainership of the Linux 2.4 branch over to Marcelo Tosatti
65when Linus went off to start developing the newer 2.6 kernel tree. Marcelo did a
66fine job of keeping 2.4 stable and secure, and has since handed over
67maintainership to Willy. Note that only security and bug fixes are accepted into
68the 2.4 kernel tree. Actual development happens in the Linux 2.6 kernel tree.
69</p>
70
71<p>
72Linux 2.6 is maintained by Andrew Morton, who works closely with Linus
73Torvalds to deliver a fast, powerful, and feature-packed Linux kernel.
74Development is happening at incredible pace and this kernel tree is now very
75mature.
76</p>
77
78<p>
79Some of the more uncommon system architectures are not fully compatible with
80Linux 2.6, and some users prefer the tried-and-tested Linux 2.4 kernel. However,
81please note that Linux 2.4 is currently not being developed further - only bug
82and security fixes are being included in the newer releases. If you are able to,
83we suggest that you upgrade to Linux 2.6. You may find the <uri
84link="/doc/en/migration-to-2.6.xml">migration document</uri> useful.
85</p>
86
45</body> 87</body>
46</section> 88</section>
47</chapter> 89</chapter>
48 90
49<chapter> 91<chapter>
50<title>The Choices, Part I</title> 92<title>Supported kernel packages</title>
51<section>
52<title>gentoo-sources</title>
53<body>
54
55<p>
56For most users, the recommended kernel sources are the
57<c>gentoo-sources</c>. The <c>gentoo-sources</c> package contains
58specially tuned performance kernel patches designed to optimize tasks
59such as compiling while listening to music and browsing the web. Most
60of you who are new to Gentoo have probably never run a system where you
61are regularly compiling many packages from source while you are doing your
62normal everyday tasks on your computer.
63You may find that if you use the <c>vanilla-sources</c> (the official
64kernel sources released from <uri>http://www.kernel.org</uri>) normal tasks --
65such as listening to music, moving your mouse and the like -- may appear
66jumpy when you are compiling packages.
67</p>
68
69<p>
70The <c>gentoo-sources</c> contain an updated ACPI subsystem and are based
71on Con Kolivas' high-performance kernel patches (<c>ck-sources</c>). We also
72support grSecurity (a set of security-related patches with support for
73ACLs), EVMS(2) (a highly flexible storage management filesystem with easy
74partition resizing), JFS (IBM's high-performance filesystem), the latest
75NTFS drivers, and more.
76</p>
77
78<p>
79Because the <c>gentoo-sources</c> are targeted at full performance, they are
80also very good for gaming purposes.
81</p>
82
83</body>
84</section> 93<section>
94<title>genkernel</title>
95<body>
96
97<p>
98<c>Genkernel</c> is a kernel toolset that can be used to autodetect your
99hardware and configure your kernel automatically. This is usually recommended
100for users who do not feel comfortable about compiling a kernel manually.
101</p>
102
103<p>
104For more information, please read the <uri link="/doc/en/genkernel.xml">Gentoo
105Linux Genkernel Guide</uri>.
106</p>
107
108</body>
85<section> 109</section>
86<title>vanilla-sources</title>
87<body>
88
89<p>
90The next kernel sources that many of you will probably be familiar with
91as Linux users are the <c>vanilla-sources</c>. As I mentioned briefly
92above, these are the official 2.4 kernel sources released on
93<uri>http://www.kernel.org/</uri>. These sources are maintained (contrary
94to popular belief) not by Linus Torvalds himself, but by Marcelo
95Tosatti. Linus is the leader of active kernel development, but as he is
96only one man, he passes off the maintenance of the stable 2.4 kernel branch
97to someone he can trust to handle it once it has stabilized. Thus, Alan
98Cox became the maintainer of the Linux-2.2 kernel series and Marcelo
99Tosatti became the maintainer of the Linux-2.4 kernel series. This is
100what all the other patch sets in the 2.4 series are based on. Marcelo has
101been doing an outstanding job with its maintenance and it can be
102counted on for stability and up-to-date (if not bleeding edge) hardware
103support.
104</p>
105
106<p>
107<c>vanilla-sources</c> are probably the most stable sources available
108since they are the most tested and all possible kernel sources are based
109on them. If you don't need any of the extras that the other kernels supply
110then the <c>vanilla-sources</c> are your thing.
111</p>
112
113</body>
114</section> 110<section>
111<title>General purpose: gentoo-sources</title>
112<body>
113
114<p>
115For most users, we recommend the <c>gentoo-sources</c> kernel. Since the
1162005.0 release, Gentoo Linux uses 2.6 as the default kernel. Unless you are
117specifically using the 2.4 profile, <c>gentoo-sources</c> will be a 2.6 kernel
118on <e>most</e> architectures.
119</p>
120
121<p>
122<c>gentoo-sources</c> is a kernel based on Linux 2.6, lightly patched to fix
123security problems, kernel bugs, and to increase compatibility with the more
124uncommon system architectures. Linux 2.6 is the current official stable kernel
125tree, and development is progressing rapidly. For highest performance, best
126hardware support, and its large new feature set, we recommend 2.6 over its older
1272.4 counterpart.
128</p>
129
130<p>
131The 2.4 <c>gentoo-sources</c> kernel patches are similar to those included in
132its 2.6 counterpart, plus a number of patches designed to add functionality and
133improve performance.
134</p>
135
136<p>
137The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
138kernel team. They are brought to you by a group of talented developers, which
139can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
140maintainer of udev and responsible for the USB and PCI subsystems of the
141official Linux kernel.
142</p>
143
144</body>
115<section> 145</section>
116<title>development-sources</title>
117<body>
118
119<p>
120The <c>development-sources</c> ebuild provides the stable 2.6 Linux kernel.
121As opposed to what the name might suggest this kernel source is completely
122stable and production-ready.
123</p>
124
125</body>
126</section> 146<section>
127<section> 147<title>For servers: hardened-sources and rsbac-sources</title>
128<title>gs-sources</title>
129<body>
130
131<p>
132For users to whom desktop interactive performance comes as a secondary
133priority to reliability and hardware support, we have the
134<c>gs-sources</c>. GS stands for Gentoo Stable (creative, aren't we?).
135This patch set is tuned and tested to provide the best support for the
136latest hardware and ensures that your mission critical servers will be
137up when you need them. This kernel doesn't have some of the most
138aggressive performance tuning patches from the <c>gentoo-sources</c>,
139but rest assured, the great performance that you know and love from the
140vanilla kernels are alive and well. Where possible and without
141compromising stability we add server related performance patches.
142</p>
143
144<p>
145This kernel provides support for the latest ACPI subsystem, EVMS, ECC
146(required for HA Linux systems), Encrypted Loopback devices, NTFS, Win4Lin
147and XFS. It also contains updates for IDE, ext3 and several network cards
148amongst other patches.
149</p>
150
151<p>
152In other words, these sources are perfect for servers and
153High-Availability systems.
154</p>
155
156<p>
157The following USE-flags can be set to select optional patches:
158</p>
159
160<table>
161<tr><th>Flags</th><th>Description</th></tr>
162<tr><ti>crypt</ti><ti>Apply cryptographic patches</ti></tr>
163</table>
164
165</body> 148<body>
166</section>
167<section>
168<title>gentoo-test-sources</title>
169<body>
170 149
171<p>
172<c>gentoo-test-sources</c> are what will become <c>gentoo-sources</c> after
173lots of testing and QA. Patches to the <c>gentoo-sources</c> are first
174added to <c>gentoo-test-sources</c> for testing. So if you want the
175performance of <c>gentoo-sources</c> with the most recent possible
176patches, use <c>gentoo-test-sources</c>.
177</p> 150<p>
178 151<c>hardened-sources</c> is based on the official Linux kernel and is targeted
179</body> 152at our users running Gentoo on server systems. It provides patches for the
180</section> 153various subprojects of Gentoo Hardened (such as support for
181<section> 154<uri link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and
182<title>hardened-sources</title> 155<uri link="http://grsecurity.net">grsecurity</uri>), together with
183<body> 156stability/security-enhancements. Like <c>gentoo-sources</c> it comes in 2.6
184 157and 2.4 versions. Check <uri>http://www.gentoo.org/proj/en/hardened/</uri> for
158more information.
185<p> 159</p>
186<c>hardened-sources</c> provides patches for the various subprojects of 160
187Gentoo Hardened (such as support for LSM/SELinux and GRSecurity), together
188with stability/security-enhancements. Check
189<uri>http://www.gentoo.org/proj/en/hardened/</uri> for more information.
190</p> 161<p>
191 162<c>rsbac-sources</c> contains patches to use Rule Set Based Access Controls
163(<uri link="http://www.rsbac.org">RSBAC</uri>) and comes in 2.4 and 2.6
164flavours. It is maintained by the <uri link="/proj/en/hardened/rsbac/">RSBAC
165project</uri>, a sub-project of Gentoo Hardened.
192<p> 166</p>
193The following USE-flags can be set to select optional patches:
194</p>
195 167
196<table> 168<impo>
197<tr><th>Flags</th><th>Description</th></tr> 169These kernels provide powerful patches for enhanced security. Please read the
198<tr><ti>selinux</ti><ti>Substitute grSecurity with SELinux support</ti></tr> 170<uri link="/proj/en/hardened/">documentation</uri> before you use them.
199</table> 171</impo>
200
201</body>
202</section>
203<section>
204<title>xfs-sources</title>
205<body>
206
207<p>
208<c>xfs-sources</c> contains support for EVMS, ACPI, grSecurity and, what
209you probably already figured out by now, the latest XFS support patches
210from the XFS Development. Please note that XFS support has been merged
211into the regular 2.4 kernel tree.
212</p>
213
214<p>
215More information about XFS on <uri>http://oss.sgi.com/projects/xfs/</uri>.
216</p>
217 172
218</body> 173</body>
219</section> 174</section>
220<section> 175<section>
221<title>Architecture dependent kernels</title> 176<title>Architecture dependent kernels</title>
222<body> 177<body>
223 178
224<p> 179<p>
225<c>alpha-sources</c>, <c>hppa-sources</c>, <c>ia64-sources</c>, 180<c>hppa-sources</c>, <c>mips-sources</c>, <c>sh-sources</c>,
226<c>mips-sources</c>, <c>ppc-sources</c> and 181<c>sparc-sources</c>, and <c>xbox-sources</c> are, as their names suggest,
227<c>sparc-sources</c> are, as their names suggest, patched to run best on 182patched to run best on specific architectures. They also contain some of the
228specific architectures. They also contain some of the patches for hardware and 183patches for hardware and features support from the other patch sets mentioned
229features support from the other patch sets mentioned above and below. 184above and below.
230</p>
231
232</body>
233</section>
234<section>
235<title>ppc-sources-benh</title>
236<body>
237
238<p>
239The <c>ppc-sources-benh</c> ebuilds provide additional hardware
240support for the <c>ppc-sources</c> kernel. It is slightly more
241experimental than the <c>ppc-sources</c>.
242</p>
243
244</body>
245</section>
246<section>
247<title>ppc-sources-crypto</title>
248<body>
249
250<p>
251The <c>ppc-sources-crypto</c> ebuilds provide CryptoAPI
252support for the Gentoo Linux PPC Kernel.
253</p>
254
255</body>
256</section>
257<section>
258<title>ppc-sources-dev</title>
259<body>
260
261<p>
262The <c>ppc-sources-dev</c> packages provide the development sources for
263<c>ppc-sources</c>. Every patch which should become part of
264<c>ppc-sources</c> has to go through <c>ppc-sources-dev</c> first.
265</p>
266
267</body>
268</section>
269<section>
270<title>compaq-sources</title>
271<body>
272
273<p>
274The <c>compaq-sources</c> provide RedHat's kernel sources for Alpha,
275maintained by Compaq.
276</p> 185</p>
277 186
278</body> 187</body>
279</section> 188</section>
280</chapter> 189</chapter>
281 190
282<chapter> 191<chapter>
283<title>The Choices, Part II</title> 192<title>Unsupported kernel packages</title>
284<section> 193<section>
285<body> 194<body>
286 195
287<p> 196<p>
288Now I'm going to try to briefly describe some of the other 197Now I'm going to try to briefly describe some of the other
289<path>sys-kernel/*-sources</path> which you saw scroll by when you ran 198<path>sys-kernel/*-sources</path> which you saw scroll by when you ran
290<c>emerge -s sources</c>. Lets take them in alphabetical order. 199<c>emerge -s sources</c>. Lets take them in alphabetical order. These
200kernels are provided as a courtesy only and the various patch sets are not
201supported by the Gentoo team.
291</p> 202</p>
292 203
293</body> 204</body>
294</section>
295<section> 205</section>
296<title>aa-sources</title>
297<body>
298
299<p>
300First we have <c>aa-sources</c>. This is Andrea Arcangeli's patch set.
301Andrea is known as an amazing coder by many other kernel hackers. His
302kernel patch set has some of the most aggressively tuned VM (Virtual
303Memory) patches known to mankind. When I last looked, it also contained
304SGI's XFS filesystem and the O(1) scheduler by Ingo Molar (which is
305the default scheduler for Linux 2.6).
306</p>
307
308<p>
309It also provides User Mode Linux support (check out our
310<uri link="/doc/en/uml.xml">UML Guide</uri> for more information) and
311the latest TUX Webserver (an in-kernel webserver).
312</p>
313
314<p>
315If you have Memory Management troubles with other kernels,
316<c>aa-sources</c> can be your solution. If you want to optimize Linux's
317Memory Management for your system, <c>aa-sources</c> is <e>definitely</e>
318what you need.
319</p>
320
321<p>
322Visit
323<uri>http://www.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4</uri>
324for more information about all the patches in these kernel sources.
325</p>
326
327</body>
328</section> 206<section>
329<section>
330<title>ck-sources</title> 207<title>git-sources</title>
331<body>
332
333<p>
334<c>ck-sources</c> is Con Kolivas's kernel patch set. This kernel is
335<e>HIGHLY</e> tuned for desktop performance at the expense of
336throughput and some of the scheduler's ability to prioritize
337applications. Con Kolivas benchmarks kernels to find the best
338combination of features for desktop use. See
339<uri>http://kernel.kolivas.org</uri> for more information on Con and his
340patches.
341</p>
342
343</body> 208<body>
344</section>
345<section>
346<title>gaming-sources</title>
347<body>
348 209
349<p>
350<c>gaming-sources</c> are based on <c>ck-sources</c> and are therefore
351tuned for high performance. They also contain patches for the latest
352game-related hardware (graphic cards, sound cards, and such).
353</p> 210<p>
354 211The <c>git-sources</c> package tracks daily snapshots of the upstream
355<p> 212development kernel tree. You should run these kernels if you are interested in
356If you are a hardcore gamer, this is your choice. 213kernel development or testing. Bugreports should go to the <uri
357</p> 214link="http://bugme.osdl.org/">Linux Kernel Bug Tracker</uri> or LKML (Linux
358 215Kernel Mailing List).
359</body>
360</section>
361<section>
362<title>grsec-sources</title>
363<body>
364
365<p>
366The <c>grsec-sources</c> kernel source is patched with the latest GRSecurity
367updates (GRSecurity version 1.9 and up) which includes, amongst other
368security-related patches, support for PaX.
369</p> 216</p>
370 217
371</body> 218</body>
372</section> 219</section>
373<section> 220<section>
374<title>mm-sources</title> 221<title>mm-sources</title>
375<body> 222<body>
376 223
377<p> 224<p>
378The <c>mm-sources</c> are based on the <c>development-sources</c> and 225The <c>mm-sources</c> are based on the <c>vanilla-sources</c> and contain
379contain Andrew Morton's patch set. It assembles several other patches, 226Andrew Morton's patch set. They include the experimental and bleeding-edge
380like ext2/3 Extended Attributes and Access Control Lists, Page Table 227features that are going to be included in the official kernel (or that are
381Sharing, the Orlov Allocator, non-linear mapping behaviour, etc into one 228going to be rejected because they set your box on fire). They are known to be
382patch set. 229always moving at a fast pace and can change radically from one week to the
383</p> 230other; kernel hackers use them as a testing ground for new stuff.
384
385<p> 231</p>
232
233<p>
386If you really want to live on the edge and you think 234If you really want to live on the edge and you think
387<c>development-sources</c> are for wussies, then try out 235<c>vanilla-sources</c> are for wussies, then try out
388<c>mm-sources</c>. 236<c>mm-sources</c>. Be warned that this kernel is highly experimental and
237doesn't always work as expected.
389</p> 238</p>
390 239
391</body> 240</body>
392</section>
393<section> 241</section>
394<title>openmosix-sources</title>
395<body>
396
397<p>
398The <c>openmosix-sources</c> are patched to support the openMosix system
399(like MOSIX but Open Source). For more information see
400<uri>http://www.openmosix.org</uri>.
401</p>
402
403</body>
404</section> 242<section>
243<title>openvz-sources</title>
244<body>
245
246<p>
247OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
248isolated, secure virtual private servers (VPSs) or virtual environments on a
249single physical server enabling better server utilization and ensuring that
250applications do not conflict. For more information, see
251<uri>http://www.openvz.org</uri>.
252</p>
253
254</body>
405<section> 255</section>
406<title>pac-sources</title>
407<body>
408
409<p>
410The <c>pac-sources</c> kernel tree is patched with Bernhard Rosenkraenzer's
411(bero) patches.
412</p>
413
414</body>
415</section> 256<section>
416<section>
417<title>planet-ccrma-sources</title> 257<title>suspend2-sources</title>
418<body>
419
420<p>
421This kernel source contains the Linux Kernel source for the version of the
422Redhat Linux Kernel modified by the Planet CCRMA (custom audio upgrade) project.
423</p>
424
425<p>
426More information can be found at <uri>http://ccrma-www.stanford.edu/</uri>.
427</p>
428
429</body> 258<body>
430</section>
431<section>
432<title>selinux-sources</title>
433<body>
434 259
260<p>
261The <c>suspend2-sources</c> are patched with both genpatches
262which includes the patches found in gentoo-sources, and <uri
263link="http://www.suspend2.net">Software Suspend 2</uri> which is a new
264and improved implementation of suspend-to-disk for the Linux kernel.
435<p> 265</p>
436<c>selinux-sources</c> from <uri>http://www.nsa.gov/selinux</uri> are 266
437patches for the security conscious to support the LSM (Linux Security 267<p>
438Modules) and the Flask Security Architecture. 268This kernel is recommended for laptop users who often rely on being able
269to suspend their laptop and resume work elsewhere.
439</p> 270</p>
440 271
441</body> 272</body>
442</section> 273</section>
443<section> 274<section>
458</p> 289</p>
459 290
460</body> 291</body>
461</section> 292</section>
462<section> 293<section>
294<title>vanilla-sources</title>
295<body>
296
297<p>
298The next kernel sources that many of you will probably be familiar with as Linux
299users are the <c>vanilla-sources</c>. These are the official kernel sources
300released on <uri>http://www.kernel.org/</uri>. Please note that we do not patch
301these kernels at all - these are purely for people who wish to run a completely
302unmodified Linux kernel. We recommend that you use <c>gentoo-sources</c>
303instead.
304</p>
305
306<p>
307Similar to <c>gentoo-sources</c>, two versions of the kernel can be found
308under this package: 2.4 and 2.6.
309</p>
310
311</body>
312</section>
313</chapter>
314
315<chapter>
316<title>Previously provided kernel packages</title>
317<section>
318<title>aa-sources</title>
319<body>
320
321<p>
322<c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
323The upstream maintainer has stopped releasing kernel patchsets, this package
324was removed as it went out of date.
325</p>
326
327</body>
328</section>
329<section>
330<title>alpha-sources</title>
331<body>
332
333<p>
334<c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
335compatibility for the Alpha architecture. These patches have been developed
336and included in the mainline kernel. Alpha users can now run any recent kernel
337with no need for extra patches.
338</p>
339
340</body>
341</section>
342<section>
343<title>ck-sources</title>
344<body>
345
346<p>
347<c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is
348primarily designed to improve system responsiveness and interactivity and is
349configurable for varying workloads (from servers to desktops). The patchset is
350also quite mature and has been put through numerous iterations of development
351and tuning. The emphasis of each release is on stability and security. Support
352and information is available at <uri>http://kernel.kolivas.org</uri> and in
353<c>#ck</c> on <c>irc.oftc.net</c>.
354</p>
355
356</body>
357</section>
358<section>
359<title>development-sources</title>
360<body>
361
362<p>
363<c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
364be found under the <c>vanilla-sources</c> package.
365</p>
366
367</body>
368</section>
369<section>
370<title>gentoo-dev-sources</title>
371<body>
372
373<p>
374<c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
375stability fixes, can now be found under the <c>gentoo-sources</c> package.
376</p>
377
378</body>
379</section>
380<section>
381<title>grsec-sources</title>
382<body>
383
384<p>
385The <c>grsec-sources</c> kernel source used to be patched with the latest
386grsecurity updates (grsecurity version 2.0 and up) which included, amongst
387other security-related patches, support for PaX. As grsecurity patches are
388included in <c>hardened-sources</c>, this package is no longer in Portage.
389</p>
390
391</body>
392</section>
393<section>
394<title>hardened-dev-sources</title>
395<body>
396
397<p>
398<c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
399package.
400</p>
401
402</body>
403</section>
404<section>
405<title>rsbac-dev-sources</title>
406<body>
407
408<p>
409The <c>rsbac-dev-sources</c> kernels can now be found under the
410<c>rsbac-sources</c> package.
411</p>
412
413</body>
414</section>
415<section>
416<title>selinux-sources</title>
417<body>
418
419<p>
420<c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
421has been obsoleted by security development in the 2.6 tree. SELinux
422functionality can be found in the <c>hardened-sources</c> package.
423</p>
424
425</body>
426</section>
427<section>
428<title>uclinux-sources</title>
429<body>
430
431<p>
432The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
433devices. For more information, see <uri>http://www.uclinux.org</uri>. Lack of
434security patches as well as hardware to test on were the reasons this is no longer
435in the tree.
436</p>
437
438</body>
439</section>
440<section>
463<title>win4lin-sources</title> 441<title>win4lin-sources</title>
464<body> 442<body>
465 443
466<p> 444<p>
467<c>win4lin-sources</c> are patched to support the userland win4lin tools 445<c>win4lin-sources</c> were patched to support the userland win4lin tools
468that allow Linux users to run many Microsoft Windows (TM) applications 446that allow Linux users to run many Microsoft Windows (TM) applications
469at almost native speeds. See <uri>http://www.netraverse.com/</uri> for more 447at almost native speeds. This was removed due to security issues.
470information.
471</p>
472
473</body>
474</section>
475<section>
476<title>wolk-sources</title>
477<body>
478
479<p>
480<c>wolk-sources</c> contains the <e>Working Overloaded Linux Kernel</e> from
481<uri>http://sourceforge.net/projects/wolk</uri>. This kernel contains
482many patches of a wide variety, all combined into the kernel with
483extreme care. This allows you to configure nearly every one into and out
484of the kernel at compile time -- so the kernel will work with nearly any
485combination of the patches.
486</p>
487
488<p>
489If you need a certain combination of patches that you cannot find in other
490kernel sources, WOLK is definitely worth a shot.
491</p> 448</p>
492 449
493</body> 450</body>
494</section> 451</section>
495</chapter> 452</chapter>

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