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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 1.43 2006/11/28 20:01:21 nightmorph 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 link="/doc/en/gentoo-kernel.xml">
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="sven.vermeulen@siphos.be">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>
18</author> 30</author>
19 31
20<abstract> 32<abstract>
21This document gives you an overview on all kernelsources that Gentoo 33This document gives you an overview on all kernel sources that Gentoo
22provides through Portage. 34provides through Portage.
23</abstract> 35</abstract>
24 36
37<!-- The content of this document is licensed under the CC-BY-SA license -->
38<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
25<license/> 39<license/>
26 40
27<version>0.4</version> 41<version>1.15</version>
28<date>July 02, 2004</date> 42<date>2006-11-28</date>
29 43
30<chapter> 44<chapter>
31<title>Introduction</title> 45<title>Introduction</title>
32<section> 46<section>
33<body> 47<body>
45</body> 59</body>
46</section> 60</section>
47</chapter> 61</chapter>
48 62
49<chapter> 63<chapter>
50<title>The Choices, Part I</title> 64<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> 65<section>
66<title>genkernel</title>
67<body>
68
69<p>
70<c>Genkernel</c> is a kernel toolset that can be used to autodetect your
71hardware and configure your kernel automatically. This is usually recommended
72for users who do not feel comfortable about compiling a kernel manually.
73</p>
74
75<p>
76For more information, please read the <uri link="/doc/en/genkernel.xml">Gentoo
77Linux Genkernel Guide</uri>.
78</p>
79
80</body>
85<section> 81</section>
82<section>
83<title>General purpose: gentoo-sources</title>
84<body>
85
86<p>
87For most users, we recommend the <c>gentoo-sources</c> kernel. Since the
882005.0 release, Gentoo Linux uses 2.6 as the default kernel. Unless you are
89specifically using the 2.4 profile, <c>gentoo-sources</c> will be a 2.6 kernel
90on <e>most</e> architectures.
91</p>
92
93<p>
94<c>gentoo-sources</c> is a kernel based on Linux 2.6, with various kernel
95patches included to fix security problems, kernel bugs, and to increase
96compatibility with the more uncommon system architectures. Linux 2.6 is
97the current official stable kernel tree, and development is progressing
98rapidly. For highest performance, best hardware support, and its large
99new feature set, we recommend 2.6 over its older 2.4 counterpart.
100</p>
101
102<p>
103Some of the more uncommon system architectures are not fully compatible with
104Linux 2.6, and some users prefer to the tried-and-tested Linux 2.4 kernel;
105for this reason we provide <c>gentoo-sources</c> (the 2.4 version). The
106patches included in this kernel are similar to those included in its 2.6
107counterpart, plus a number of patches designed to add functionality and
108improve performance. Linux 2.4 is currently not being developed further - only
109bug and security fixes are being included in the newer releases. If you are
110able to, we suggest that you upgrade to Linux 2.6. You may find the
111<uri link="/doc/en/migration-to-2.6.xml">migration document</uri> useful.
112</p>
113
114<p>
115The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
116kernel team. They are brought to you by a group of talented developers, which
117can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
118maintainer of udev and responsible for the USB and PCI subsystems of the
119official Linux kernel.
120</p>
121
122</body>
123</section>
124<section>
86<title>vanilla-sources</title> 125<title>Plain kernels: vanilla-sources</title>
87<body> 126<body>
88 127
89<p> 128<p>
90The next kernel sources that many of you will probably be familiar with 129The 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 130as Linux users are the <c>vanilla-sources</c>. These are the official kernel
92above, these are the official 2.4 kernel sources released on 131sources released on <uri>http://www.kernel.org/</uri>. Please note that we do
93<uri>http://www.kernel.org/</uri>. These sources are maintained (contrary 132not patch these kernels at all - these are purely for people who wish to run
94to popular belief) not by Linus Torvalds himself, but by Marcelo 133a completely unmodified Linux kernel.
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> 134</p>
107<c>vanilla-sources</c> are probably the most stable sources available 135
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> 136<p>
137Similar to <c>gentoo-sources</c>, two versions of the kernel can be found
138under this package: 2.4 and 2.6.
139</p>
112 140
141<p>
142Linux 2.4 is maintained by Marcelo Tosatti. Linus Torvalds, the original
143creator of Linux, handed maintainership of the Linux 2.4 branch over to
144Marcelo when Linus went off to start developing the newer 2.6 kernel tree.
145Marcelo has done a fine job of keeping 2.4 stable and secure, and is now
146only accepting security and bug fixes into the 2.4 kernel tree. Actual
147development happens in the Linux 2.6 kernel tree.
148</p>
149
150<p>
151Linux 2.6 is maintained by Andrew Morton, who works closely with Linus
152Torvalds to deliver a fast, powerful, and feature-packed Linux kernel.
153Development is happening at incredible pace and this kernel tree is now very
154mature.
155</p>
156
113</body> 157</body>
114</section>
115<section> 158</section>
116<title>development-sources</title>
117<body>
118 159
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> 160<section>
127<section> 161<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> 162<body>
166</section>
167<section>
168<title>gentoo-test-sources</title>
169<body>
170 163
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> 164<p>
178 165<c>hardened-sources</c> is based on the official Linux kernel and is targeted
179</body> 166at our users running Gentoo on server systems. It provides patches for the
180</section> 167various subprojects of Gentoo Hardened (such as support for
181<section> 168<uri link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and
182<title>hardened-sources</title> 169<uri link="http://grsecurity.net">grsecurity</uri>), together with
183<body> 170stability/security-enhancements. Like <c>gentoo-sources</c> it comes in 2.6
184 171and 2.4 versions. Check <uri>http://www.gentoo.org/proj/en/hardened/</uri> for
172more information.
185<p> 173</p>
186<c>hardened-sources</c> provides patches for the various subprojects of 174
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> 175<p>
191 176<c>rsbac-sources</c> contains patches to use Rule Set Based Access Controls
177(<uri link="http://www.rsbac.org">RSBAC</uri>) and comes in 2.4 and 2.6
178flavours. It is maintained by the <uri link="/proj/en/hardened/rsbac/">RSBAC
179project</uri>, a sub-project of Gentoo Hardened.
192<p> 180</p>
193The following USE-flags can be set to select optional patches:
194</p>
195 181
196<table> 182<impo>
197<tr><th>Flags</th><th>Description</th></tr> 183These kernels provide powerful patches for enhanced security. Please read the
198<tr><ti>selinux</ti><ti>Substitute grSecurity with SELinux support</ti></tr> 184<uri link="/proj/en/hardened/">documentation</uri> before you use them.
199</table> 185</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>
217 186
218</body> 187</body>
219</section> 188</section>
220<section> 189<section>
221<title>Architecture dependent kernels</title> 190<title>Architecture dependent kernels</title>
222<body> 191<body>
223 192
224<p> 193<p>
225<c>alpha-sources</c>, <c>hppa-sources</c>, <c>ia64-sources</c>, 194<c>hppa-sources</c>, <c>mips-sources</c>, <c>sh-sources</c> <c>sparc-sources</c>
226<c>mips-sources</c>, <c>ppc-sources</c> and
227<c>sparc-sources</c> are, as their names suggest, patched to run best on 195and <c>xbox-sources</c> are, as their names suggest, patched to run best on
228specific architectures. They also contain some of the patches for hardware and 196specific architectures. They also contain some of the patches for hardware and
229features support from the other patch sets mentioned above and below. 197features support from the other patch sets mentioned above and below.
230</p> 198</p>
231 199
232</body> 200</body>
233</section> 201</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>
277
278</body>
279</section>
280</chapter> 202</chapter>
281 203
282<chapter> 204<chapter>
283<title>The Choices, Part II</title> 205<title>Unsupported kernel packages</title>
284<section> 206<section>
285<body> 207<body>
286 208
287<p> 209<p>
288Now I'm going to try to briefly describe some of the other 210Now 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 211<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. 212<c>emerge -s sources</c>. Lets take them in alphabetical order. These
291</p> 213kernels are provided as a courtesy only and the various patch sets are not
292 214supported by the Gentoo team.
293</body>
294</section>
295<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> 215</p>
326 216
327</body> 217</body>
328</section> 218</section>
329<section> 219<section>
330<title>ck-sources</title> 220<title>ck-sources</title>
331<body> 221<body>
332 222
333<p> 223<p>
334<c>ck-sources</c> is Con Kolivas's kernel patch set. This kernel is 224<c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is
335<e>HIGHLY</e> tuned for desktop performance at the expense of 225primarily designed to improve system responsiveness and interactivity and is
336throughput and some of the scheduler's ability to prioritize 226configurable for varying workloads (from servers to desktops). The patchset is
337applications. Con Kolivas benchmarks kernels to find the best 227also quite mature and has been put through numerous iterations of development
338combination of features for desktop use. See 228and tuning. The emphasis of each release is on stability and security. Support
339<uri>http://kernel.kolivas.org</uri> for more information on Con and his 229and information is available at <uri>http://kernel.kolivas.org</uri> and in
340patches. 230<c>#ck</c> on <c>irc.oftc.net</c>.
341</p> 231</p>
342 232
343</body> 233</body>
344</section>
345<section> 234</section>
346<title>gaming-sources</title>
347<body>
348
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>
354
355<p>
356If you are a hardcore gamer, this is your choice.
357</p>
358
359</body>
360</section> 235<section>
361<section>
362<title>grsec-sources</title> 236<title>git-sources</title>
363<body> 237<body>
364 238
365<p> 239<p>
366The <c>grsec-sources</c> kernel source is patched with the latest GRSecurity 240The <c>git-sources</c> package tracks daily snapshots of the upstream
367updates (GRSecurity version 1.9 and up) which includes, amongst other 241development kernel tree. You should run these kernels if you are interested in
368security-related patches, support for PaX. 242kernel development or testing. Bugreports should go to the <uri
243link="http://bugme.osdl.org/">Linux Kernel Bug Tracker</uri> or LKML (Linux
244Kernel Mailing List).
369</p> 245</p>
370 246
371</body> 247</body>
372</section> 248</section>
373<section> 249<section>
374<title>mm-sources</title> 250<title>mm-sources</title>
375<body> 251<body>
376 252
377<p> 253<p>
378The <c>mm-sources</c> are based on the <c>development-sources</c> and 254The <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, 255Andrew Morton's patch set. They include the experimental and bleeding-edge
380like ext2/3 Extended Attributes and Access Control Lists, Page Table 256features that are going to be included in the official kernel (or that are
381Sharing, the Orlov Allocator, non-linear mapping behaviour, etc into one 257going to be rejected because they set your box on fire). They are known to be
382patch set. 258always moving at a fast pace and can change radically from one week to the
383</p> 259other; kernel hackers use them as a testing ground for new stuff.
384
385<p> 260</p>
261
262<p>
386If you really want to live on the edge and you think 263If you really want to live on the edge and you think
387<c>development-sources</c> are for wussies, then try out 264<c>vanilla-sources</c> are for wussies, then try out
388<c>mm-sources</c>. 265<c>mm-sources</c>. Be warned that this kernel is highly experimental and
266doesn't always work as expected.
389</p> 267</p>
390 268
391</body> 269</body>
392</section> 270</section>
393<section> 271<section>
394<title>openmosix-sources</title> 272<title>openmosix-sources</title>
395<body> 273<body>
396 274
397<p> 275<p>
398The <c>openmosix-sources</c> are patched to support the openMosix system 276The <c>openmosix-sources</c> are patched to support the openMosix system
399(like MOSIX but Open Source). For more information see 277(a cluster oriented kernel patchset like MOSIX but Open Source). For more
400<uri>http://www.openmosix.org</uri>. 278information see <uri>http://www.openmosix.org</uri>.
401</p> 279</p>
402 280
403</body> 281</body>
404</section>
405<section> 282</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> 283<section>
284<title>openvz-sources</title>
285<body>
286
287<p>
288OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
289isolated, secure virtual private servers (VPSs) or virtual environments on a
290single physical server enabling better server utilization and ensuring that
291applications do not conflict. For more information, see
292<uri>http://www.openvz.org</uri>.
293</p>
294
295</body>
416<section> 296</section>
417<title>planet-ccrma-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>
430</section> 297<section>
431<section>
432<title>selinux-sources</title> 298<title>suspend2-sources</title>
433<body> 299<body>
434 300
301<p>
302The <c>suspend2-sources</c> are patched with both genpatches
303which includes the patches found in gentoo-sources, and <uri
304link="http://www.suspend2.net">Software Suspend 2</uri> which is a new
305and improved implementation of suspend-to-disk for the Linux kernel.
435<p> 306</p>
436<c>selinux-sources</c> from <uri>http://www.nsa.gov/selinux</uri> are 307
437patches for the security conscious to support the LSM (Linux Security 308<p>
438Modules) and the Flask Security Architecture. 309This kernel is recommended for laptop users who often rely on being able
310to suspend their laptop and resume work elsewhere.
439</p> 311</p>
440 312
441</body> 313</body>
442</section> 314</section>
443<section> 315<section>
457<uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>. 329<uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>.
458</p> 330</p>
459 331
460</body> 332</body>
461</section> 333</section>
334</chapter>
335
336<chapter>
337<title>Previously provided kernel packages</title>
338<section>
339<title>aa-sources</title>
340<body>
341
342<p>
343<c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
344The upstream maintainer has stopped releasing kernel patchsets, this package
345was removed as it went out of date.
346</p>
347
348</body>
349</section>
350<section>
351<title>alpha-sources</title>
352<body>
353
354<p>
355<c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
356compatibility for the Alpha architecture. These patches have been developed
357and included in the mainline kernel. Alpha users can now run any recent kernel
358with no need for extra patches.
359</p>
360
361</body>
362</section>
363<section>
364<title>development-sources</title>
365<body>
366
367<p>
368<c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
369be found under the <c>vanilla-sources</c> package.
370</p>
371
372</body>
373</section>
374<section>
375<title>gentoo-dev-sources</title>
376<body>
377
378<p>
379<c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
380stability fixes, can now be found under the <c>gentoo-sources</c> package.
381</p>
382
383</body>
384</section>
385<section>
386<title>grsec-sources</title>
387<body>
388
389<p>
390The <c>grsec-sources</c> kernel source used to be patched with the latest
391grsecurity updates (grsecurity version 2.0 and up) which included, amongst
392other security-related patches, support for PaX. As grsecurity patches are
393included in <c>hardened-sources</c>, this package is no longer in Portage.
394</p>
395
396</body>
397</section>
398<section>
399<title>hardened-dev-sources</title>
400<body>
401
402<p>
403<c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
404package.
405</p>
406
407</body>
408</section>
409<section>
410<title>rsbac-dev-sources</title>
411<body>
412
413<p>
414The <c>rsbac-dev-sources</c> kernels can now be found under the
415<c>rsbac-sources</c> package.
416</p>
417
418</body>
419</section>
420<section>
421<title>selinux-sources</title>
422<body>
423
424<p>
425<c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
426has been obsoleted by security development in the 2.6 tree. SELinux
427functionality can be found in the <c>hardened-sources</c> package.
428</p>
429
430</body>
431</section>
432<section>
433<title>uclinux-sources</title>
434<body>
435
436<p>
437The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
438devices. For more information, see <uri>http://www.uclinux.org</uri>. Lack of
439security patches as well as hardware to test on were the reasons this is no longer
440in the tree.
441</p>
442
443</body>
444</section>
462<section> 445<section>
463<title>win4lin-sources</title> 446<title>win4lin-sources</title>
464<body> 447<body>
465 448
466<p> 449<p>
467<c>win4lin-sources</c> are patched to support the userland win4lin tools 450<c>win4lin-sources</c> were patched to support the userland win4lin tools
468that allow Linux users to run many Microsoft Windows (TM) applications 451that allow Linux users to run many Microsoft Windows (TM) applications
469at almost native speeds. See <uri>http://www.netraverse.com/</uri> for more 452at 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> 453</p>
492 454
493</body> 455</body>
494</section> 456</section>
495</chapter> 457</chapter>

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