HowtoPatchKernel

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This guide will explain you how to patch your kernel with a patch. For this guide I'm using the hdaps-kernel-2.6.2X-X.patch.

Contents

[edit] Preparing the folders

Create a dir construction like this: 

  sources/linux-2.6
  specs

[edit] Mod the spec file

Download the newest linux-2.6.xml from the paldo.org server to the specs folder.

Now change to the specs folder.

Create a new file called link-server and post this content to it: 

  #!/bin/bash
  #
  sed -i -e 's%<patch name="%<patch name="http://www.paldo.org/paldo/sources/linux-2.6/%' ./linux-2.6.xml
  sed -i -e 's%<archive name="%<archive name="http://www.paldo.org/paldo/sources/linux-2.6/%' ./linux-2.6.xml

Make it executable via: 

  chmod a+x ./link-server

Run the script via: 

  ./link-server

You have linked the needed packages to the server paldo.org, otherwise you have to download all needed files to your local repository.

Open now the XML-file and scroll down to this part:

stable 

  <!-- KERNEL -->
  <archive name="http://www.paldo.org/paldo/sources/linux-2.6/linux-2.6.20" srcdir="linux-$TAG">
        <patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION"/>

	<patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION-nozomi"/><!-- HSDPA Broadband PCMCIA card, already in -mm -->
	<patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION-unionfs-1"/><!-- add unionfs, already in -mm -->
        <archive name="http://www.paldo.org/paldo/sources/linux-2.6/linux-agp-compat-$AGPVERSION"><!-- update agp support for i915tex -->
             <cmd>cp -v agp.h backend.c frontend.c generic.c intel-agp.c isoch.c ../drivers/char/agp/</cmd>
        </archive>

testing 

  <!-- KERNEL -->
  <archive name="http://www.paldo.org/paldo/sources/linux-2.6/linux-2.6.21" srcdir="linux-$TAG">
        <patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION"/>

        <patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION-nozomi"/><!-- HSDPA Broadband PCMCIA card, already in -mm -->
        <archive name="http://www.paldo.org/paldo/sources/linux-2.6/squashfs$SQUASHFSVERSION"><!-- add squashfs support - improves rescue / live cds -->
             <cmd>patch -d .. -Np1 < kernel-patches/linux-2.6.20/squashfs3.2-patch</cmd>
        </archive>

[edit] Add the patch to the package linux-2.6

  • Download the .patch file to sources/linux-2.6 (hdaps-kernel-2.6.2X-X.patch)
  • Pack the .patch file to a .patch.bz2 file with this command: 
bzip2 ./*.patch
  • Add the .patch file to the spec: 
  <!-- KERNEL -->
  <archive name="http://www.paldo.org/paldo/sources/linux-2.6/linux-2.6.21" srcdir="linux-$TAG">
        <patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION"/>
        <patch name="hdaps-kernel-2.6.2X-X"/><!-- your patch located in your local repo -->
        <patch name="http://www.paldo.org/paldo/sources/linux-2.6/linux-$VERSION-nozomi"/><!-- HSDPA Broadband PCMCIA card, already in -mm -->
        <archive name="http://www.paldo.org/paldo/sources/linux-2.6/squashfs$SQUASHFSVERSION"><!-- add squashfs support - improves rescue / live cds -->
             <cmd>patch -d .. -Np1 < kernel-patches/linux-2.6.20/squashfs3.2-patch</cmd>
        </archive>

Use the same name as the bz2-tarball without .bz2 in it.

[edit] Install the moded kernel to your paldo system

If you renamed your kernel you have to edit also the global.xml-Spec in your local repository.

These are the relevant lines: 

   <branch name="testing">
	<settings>
		<toolchain>glibc-2.6-gcc-4.2-1</toolchain>
		<builddir>/usr/src</builddir>
		<statedir>/var/lib/upkg</statedir>
		<chrootdir>/upkg</chrootdir>
		<staging>no</staging>
		<binary>yes</binary>
		<environment name="PATH">/bin:/usr/bin:/sbin:/usr/sbin:/stage2/bin:/stage2/sbin</environment>
		<environment name="DISTRIB_RELEASE">1.14</environment>
		<environment name="LDFLAGS">$LDFLAGS</environment>
		<environment name="LINGUAS">en en_US en_GB de de_CH de_DE fr fr_CH fr_FR it it_CH it_IT es pt pl ru tr</environment>
		<variable name="DOCDIR">/usr/share/doc/$NAME</variable>
		<variable name="LDFLAGS">-Wl,-O1 -Wl,--hash-style=both</variable>
		<variable name="LINUX_VERSION">2.6.25.4-paldo2-$ARCH</variable>
	</settings>

You've to edit this LINUX_VERSION">2.6.25.4-paldo2-$ARCH to your version.


Add the local repo to your local upkg.conf file with this command: 

   $ su
   Password: enter your root password
   # sed -i -e 's%<repositories>%&\n<repository>path/to/your/kernel/repo/</repository>%' /etc/upkg.conf

Install the moded kernel with this command: 

   upkg-build --disable-binary linux-2.6
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