From: eLinux.org
This page has references to various kernel resources (web sites and mailing lists) for developers. Most of this information was gathered over a year ago, and may not be accurate.
/\ Note: You should always look at the kernel MAINTAINERS file for up-to-date information
Comprehensible changelog of the linux kernel
LWN atricles for spcific releases
LWN aricles on 2.6 API changes
web site = http://www.linux-mips.org/wiki/Main_Page
mailing list = http://www.linux-mips.org/wiki/Net_Resources#Mailing_lists
Maintainer = Ralph Baechle
there's an alternate site on Source Forge
the site is: http://sourceforge.net/projects/linux-mips
Note that this is used for experimental stuff that hasn't been merged into the official mips tree by Ralph Baechle
web site = http://penguinppc.org/
mailing lists = http://penguinppc.org/about/community.php#lists
Git repository = kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc.git
Maintainer = Paul Mackerras
Power Macintosh Maintainer = Benjamin Herrenschmidt
cross-compiler mini-howto: http://penguinppc.org/embedded/cross-compiling/
See the following for information on different linuxppc source trees available: http://www.penguinppc.org/dev/kernel.shtml