Arch Linux

mabalenk

Member

Registered: 2017-04-28

Posts: 36

Patching an ArchLinux kernel to enable support for Reiser4

Dear all,

I'm looking for help and guidance on how to patch an ArchLinux kernel in order to enable Reiser4 file system support. I have never patched a kernel before. I'm following the Reiser4 installation guide on the ArchLinux wiki: https://wiki.archlinux.org/title/Reiser4. So far, I have compiled and installed `libaal` and `reiser4progs`. I have downloaded and extracted the reiser4-for-linux-5.x patch for the Linux kernel from https://sourceforge.net/projects/reiser4/files/. Then I tried following the steps of the ArchLinux article on kernel live patching https://wiki.archlinux.org/title/Kernel_live_patching. I installed kpatch, but I'm unable to issue the `kpatch-build` command. It returns an error says: unsupported system. Any help, guidance and links to the relevant information would be appreciated. Thank you and have a good day ahead!

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 24,958

Re: Patching an ArchLinux kernel to enable support for Reiser4

Afaik none of the standard kernels have live patching support, so you'll need to build the entire kernel with the patch applied, see: https://wiki.archlinux.org/title/Kernel … ild_System and apply the patch somewhere in the prepare function.

mabalenk

Member

Registered: 2017-04-28

Posts: 36

Re: Patching an ArchLinux kernel to enable support for Reiser4

Good news that there is a wiki article about it! That's why I love Arch. Thank you very much for the pointer. I will report back on my progress in the evening.