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Fri Oct 16 11:53:34 2009 UTC (4 years, 9 months ago) by nightmorph
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WTF no one told us that hppa-sources and rsbac-sources were removed from the tree many months ago. Updated the guide to reflect this. also added cell-sources to architecture dependent kernels section.

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>

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