/[gentoo]/xml/htdocs/doc/en/gentoo-kernel.xml
Gentoo

Contents of /xml/htdocs/doc/en/gentoo-kernel.xml

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.48 - (hide annotations) (download) (as text)
Mon Dec 18 11:53:12 2006 UTC (7 years, 7 months ago) by nightmorph
Branch: MAIN
Changes since 1.47: +7 -6 lines
File MIME type: application/xml
minor typo fixes, **no content change**

1 swift 1.1 <?xml version="1.0" encoding="UTF-8"?>
2 nightmorph 1.48 <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/gentoo-kernel.xml,v 1.47 2006/12/05 00:08:44 nightmorph Exp $ -->
3 swift 1.1
4     <!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
5     <guide link="/doc/en/gentoo-kernel.xml">
6     <title>Gentoo Linux Kernel Guide</title>
7     <author title="Author">
8 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 1.47 <version>1.17</version>
45     <date>2006-12-04</date>
46 swift 1.1
47     <chapter>
48     <title>Introduction</title>
49     <section>
50     <body>
51    
52     <p>
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     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 swift 1.26 For most users, we recommend the <c>gentoo-sources</c> kernel. Since the
116     2005.0 release, Gentoo Linux uses 2.6 as the default kernel. Unless you are
117     specifically using the 2.4 profile, <c>gentoo-sources</c> will be a 2.6 kernel
118     on <e>most</e> architectures.
119 swift 1.1 </p>
120    
121     <p>
122 nightmorph 1.45 <c>gentoo-sources</c> is a kernel based on Linux 2.6, lightly patched to fix
123     security problems, kernel bugs, and to increase compatibility with the more
124     uncommon system architectures. Linux 2.6 is the current official stable kernel
125     tree, and development is progressing rapidly. For highest performance, best
126     hardware support, and its large new feature set, we recommend 2.6 over its older
127     2.4 counterpart.
128 swift 1.17 </p>
129    
130     <p>
131 nightmorph 1.45 The 2.4 <c>gentoo-sources</c> kernel patches are similar to those included in
132     its 2.6 counterpart, plus a number of patches designed to add functionality and
133     improve performance.
134 swift 1.24 </p>
135    
136     <p>
137     The <c>gentoo-sources</c> package absorbs most of the resources of the Gentoo
138     kernel team. They are brought to you by a group of talented developers, which
139     can count on the expertise of popular kernel hacker Greg Kroah-Hartman,
140     maintainer of udev and responsible for the USB and PCI subsystems of the
141     official Linux kernel.
142 swift 1.1 </p>
143    
144     </body>
145     </section>
146     <section>
147 fox2mike 1.31 <title>For servers: hardened-sources and rsbac-sources</title>
148 swift 1.1 <body>
149    
150     <p>
151 fox2mike 1.32 <c>hardened-sources</c> is based on the official Linux kernel and is targeted
152 fox2mike 1.31 at our users running Gentoo on server systems. It provides patches for the
153     various subprojects of Gentoo Hardened (such as support for
154     <uri link="http://www.nsa.gov/selinux/">LSM/SELinux</uri> and
155     <uri link="http://grsecurity.net">grsecurity</uri>), together with
156     stability/security-enhancements. Like <c>gentoo-sources</c> it comes in 2.6
157     and 2.4 versions. Check <uri>http://www.gentoo.org/proj/en/hardened/</uri> for
158     more information.
159 swift 1.17 </p>
160    
161     <p>
162 neysx 1.29 <c>rsbac-sources</c> contains patches to use Rule Set Based Access Controls
163 fox2mike 1.31 (<uri link="http://www.rsbac.org">RSBAC</uri>) and comes in 2.4 and 2.6
164     flavours. It is maintained by the <uri link="/proj/en/hardened/rsbac/">RSBAC
165 fox2mike 1.32 project</uri>, a sub-project of Gentoo Hardened.
166 swift 1.1 </p>
167    
168 neysx 1.29 <impo>
169     These kernels provide powerful patches for enhanced security. Please read the
170     <uri link="/proj/en/hardened/">documentation</uri> before you use them.
171     </impo>
172 swift 1.1
173     </body>
174     </section>
175     <section>
176     <title>Architecture dependent kernels</title>
177     <body>
178    
179     <p>
180 nightmorph 1.48 <c>hppa-sources</c>, <c>mips-sources</c>, <c>sh-sources</c>,
181     <c>sparc-sources</c>, and <c>xbox-sources</c> are, as their names suggest,
182     patched to run best on specific architectures. They also contain some of the
183     patches for hardware and features support from the other patch sets mentioned
184     above and below.
185 swift 1.1 </p>
186    
187     </body>
188     </section>
189     </chapter>
190    
191     <chapter>
192 swift 1.17 <title>Unsupported kernel packages</title>
193 swift 1.1 <section>
194     <body>
195    
196     <p>
197     Now I'm going to try to briefly describe some of the other
198     <path>sys-kernel/*-sources</path> which you saw scroll by when you ran
199 swift 1.17 <c>emerge -s sources</c>. Lets take them in alphabetical order. These
200     kernels are provided as a courtesy only and the various patch sets are not
201 swift 1.19 supported by the Gentoo team.
202 swift 1.1 </p>
203    
204     </body>
205     </section>
206     <section>
207     <title>ck-sources</title>
208     <body>
209    
210     <p>
211 swift 1.25 <c>ck-sources</c> is Con Kolivas's kernel patch set. This patchset is
212     primarily designed to improve system responsiveness and interactivity and is
213     configurable for varying workloads (from servers to desktops). The patchset is
214     also quite mature and has been put through numerous iterations of development
215     and tuning. The emphasis of each release is on stability and security. Support
216     and information is available at <uri>http://kernel.kolivas.org</uri> and in
217     <c>#ck</c> on <c>irc.oftc.net</c>.
218 swift 1.1 </p>
219    
220     </body>
221     </section>
222     <section>
223 jkt 1.36 <title>git-sources</title>
224     <body>
225    
226     <p>
227     The <c>git-sources</c> package tracks daily snapshots of the upstream
228     development kernel tree. You should run these kernels if you are interested in
229     kernel development or testing. Bugreports should go to the <uri
230 jkt 1.37 link="http://bugme.osdl.org/">Linux Kernel Bug Tracker</uri> or LKML (Linux
231 jkt 1.36 Kernel Mailing List).
232     </p>
233    
234     </body>
235     </section>
236     <section>
237 swift 1.1 <title>mm-sources</title>
238     <body>
239    
240     <p>
241 neysx 1.29 The <c>mm-sources</c> are based on the <c>vanilla-sources</c> and contain
242 neysx 1.10 Andrew Morton's patch set. They include the experimental and bleeding-edge
243     features that are going to be included in the official kernel (or that are
244     going to be rejected because they set your box on fire). They are known to be
245     always moving at a fast pace and can change radically from one week to the
246     other; kernel hackers use them as a testing ground for new stuff.
247 swift 1.1 </p>
248    
249     <p>
250 swift 1.17 If you really want to live on the edge and you think
251 neysx 1.29 <c>vanilla-sources</c> are for wussies, then try out
252 swift 1.17 <c>mm-sources</c>. Be warned that this kernel is highly experimental and
253     doesn't always work as expected.
254 swift 1.1 </p>
255    
256     </body>
257     </section>
258     <section>
259     <title>openmosix-sources</title>
260     <body>
261    
262     <p>
263     The <c>openmosix-sources</c> are patched to support the openMosix system
264 vanquirius 1.38 (a cluster oriented kernel patchset like MOSIX but Open Source). For more
265     information see <uri>http://www.openmosix.org</uri>.
266 swift 1.1 </p>
267    
268     </body>
269     </section>
270     <section>
271 fox2mike 1.35 <title>openvz-sources</title>
272     <body>
273    
274     <p>
275 flammie 1.39 OpenVZ is a server virtualization solution built on Linux. OpenVZ creates
276 fox2mike 1.35 isolated, secure virtual private servers (VPSs) or virtual environments on a
277     single physical server enabling better server utilization and ensuring that
278     applications do not conflict. For more information, see
279 flammie 1.39 <uri>http://www.openvz.org</uri>.
280 fox2mike 1.35 </p>
281    
282     </body>
283     </section>
284     <section>
285     <title>suspend2-sources</title>
286 swift 1.1 <body>
287    
288     <p>
289 fox2mike 1.35 The <c>suspend2-sources</c> are patched with both genpatches
290     which includes the patches found in gentoo-sources, and <uri
291     link="http://www.suspend2.net">Software Suspend 2</uri> which is a new
292     and improved implementation of suspend-to-disk for the Linux kernel.
293 swift 1.1 </p>
294    
295     <p>
296 fox2mike 1.35 This kernel is recommended for laptop users who often rely on being able
297     to suspend their laptop and resume work elsewhere.
298 swift 1.1 </p>
299    
300     </body>
301     </section>
302     <section>
303 fox2mike 1.35 <title>usermode-sources</title>
304 swift 1.33 <body>
305    
306     <p>
307 fox2mike 1.35 <c>usermode-sources</c> are the User Mode Linux kernel patches. This
308     kernel is designed to allow Linux to run within Linux to run within Linux
309     to ... User Mode Linux is intended for testing and virtual server support.
310     For more information about this amazing tribute to the stability and
311     scalability of Linux, see <uri>http://user-mode-linux.sourceforge.net</uri>.
312 swift 1.33 </p>
313    
314     <p>
315 fox2mike 1.35 For more information on UML and Gentoo, read the
316     <uri link="/doc/en/uml.xml">Gentoo UML Guide</uri>.
317 swift 1.33 </p>
318    
319     </body>
320     </section>
321 nightmorph 1.45 <section>
322     <title>vanilla-sources</title>
323     <body>
324    
325     <p>
326     The next kernel sources that many of you will probably be familiar with as Linux
327     users are the <c>vanilla-sources</c>. These are the official kernel sources
328     released on <uri>http://www.kernel.org/</uri>. Please note that we do not patch
329     these kernels at all - these are purely for people who wish to run a completely
330     unmodified Linux kernel. We recommend that you use <c>gentoo-sources</c>
331     instead.
332     </p>
333    
334     <p>
335     Similar to <c>gentoo-sources</c>, two versions of the kernel can be found
336     under this package: 2.4 and 2.6.
337     </p>
338    
339     </body>
340     </section>
341 swift 1.1 </chapter>
342 swift 1.17
343     <chapter>
344     <title>Previously provided kernel packages</title>
345     <section>
346 swift 1.20 <title>aa-sources</title>
347     <body>
348    
349     <p>
350     <c>aa-sources</c> was a heavily modified kernel with all kinds of patches.
351     The upstream maintainer has stopped releasing kernel patchsets, this package
352     was removed as it went out of date.
353     </p>
354    
355     </body>
356     </section>
357     <section>
358     <title>alpha-sources</title>
359     <body>
360    
361     <p>
362     <c>alpha-sources</c> was a 2.4 kernel with patches applied to improve hardware
363     compatibility for the Alpha architecture. These patches have been developed
364     and included in the mainline kernel. Alpha users can now run any recent kernel
365     with no need for extra patches.
366     </p>
367    
368     </body>
369     </section>
370     <section>
371 swift 1.24 <title>development-sources</title>
372     <body>
373    
374     <p>
375     <c>development-sources</c>, the official 2.6 kernel from kernel.org, can now
376     be found under the <c>vanilla-sources</c> package.
377     </p>
378    
379     </body>
380     </section>
381     <section>
382 alin 1.28 <title>gentoo-dev-sources</title>
383 swift 1.24 <body>
384    
385     <p>
386 alin 1.28 <c>gentoo-dev-sources</c>, a 2.6 kernel patched with bug, security and
387 swift 1.24 stability fixes, can now be found under the <c>gentoo-sources</c> package.
388     </p>
389    
390     </body>
391     </section>
392     <section>
393 fox2mike 1.35 <title>grsec-sources</title>
394     <body>
395    
396     <p>
397     The <c>grsec-sources</c> kernel source used to be patched with the latest
398     grsecurity updates (grsecurity version 2.0 and up) which included, amongst
399     other security-related patches, support for PaX. As grsecurity patches are
400     included in <c>hardened-sources</c>, this package is no longer in Portage.
401     </p>
402    
403     </body>
404     </section>
405     <section>
406 fox2mike 1.31 <title>hardened-dev-sources</title>
407     <body>
408    
409     <p>
410     <c>hardened-dev-sources</c> can now be found under the <c>hardened-sources</c>
411     package.
412     </p>
413    
414     </body>
415     </section>
416     <section>
417 swift 1.24 <title>rsbac-dev-sources</title>
418     <body>
419    
420     <p>
421     The <c>rsbac-dev-sources</c> kernels can now be found under the
422     <c>rsbac-sources</c> package.
423     </p>
424    
425     </body>
426     </section>
427     <section>
428 swift 1.20 <title>selinux-sources</title>
429     <body>
430    
431     <p>
432     <c>selinux-sources</c>, a 2.4 kernel including lots of security enhancements,
433 fox2mike 1.32 has been obsoleted by security development in the 2.6 tree. SELinux
434 fox2mike 1.31 functionality can be found in the <c>hardened-sources</c> package.
435 swift 1.18 </p>
436    
437     </body>
438     </section>
439 fox2mike 1.35 <section>
440 fox2mike 1.40 <title>uclinux-sources</title>
441     <body>
442    
443     <p>
444     The <c>uclinux-sources</c> are meant for CPUs without MMUs as well as embedded
445     devices. For more information, see <uri>http://www.uclinux.org</uri>. Lack of
446 rane 1.41 security patches as well as hardware to test on were the reasons this is no longer
447 fox2mike 1.40 in the tree.
448     </p>
449    
450     </body>
451     </section>
452     <section>
453 fox2mike 1.35 <title>win4lin-sources</title>
454     <body>
455    
456     <p>
457     <c>win4lin-sources</c> were patched to support the userland win4lin tools
458     that allow Linux users to run many Microsoft Windows (TM) applications
459     at almost native speeds. This was removed due to security issues.
460     </p>
461    
462     </body>
463     </section>
464 swift 1.17 </chapter>
465 swift 1.1 </guide>

  ViewVC Help
Powered by ViewVC 1.1.20