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Gnome-colors-add-files-to-archive.pngThis article is being considered for archiving.Gnome-colors-add-files-to-archive.png

Reason: Not migrated to AUR, only support for Fedora and Ubuntu since 2015 [1] (Discuss in Talk:Ksplice#)

Ksplice is an open source extension of the Linux kernel which allows system administrators to apply security patches to a running kernel without having to reboot the operating system. By 2011, it is acquired by Oracle and available only under premier support.


Install the ksplice-gitAUR[broken link: archived in aur-mirror] package from the Arch User Repository.


First, you need the kernel source tree for the kernel you are currently running, and some files from the previous kernel build: System.map and .config.

If you don't have System.map from the previous build, you can copy /proc/kallsyms as an equivalent. If the kernel.kptr_restrict kernel parameter is enabled, remember to copy it as root.

This example makes use of the --diffext option which creates a patch based on the differences between the old and the new source files.

Make a ksplice directory in the kernel source tree, copy System.map over from the previous build, and copy .config into the tree if it is not already in the source tree:

# mkdir -p src/ksplice
# cp System.map src/ksplice
# cp .config src/

Create a ksplice patch and wait for the kernel to rebuild. All files that end with new will be compiled into the ksplice patch. C source files, for example, should end in .cnew as the diffext is appended directly.

# ksplice-create --diffext=new src/

Apply the newly generated patch to the running kernel:

# ksplice-apply ksplice-*.tar.gz

See man pages for ksplice-apply, ksplice-create, ksplice-view, and ksplice-undo.

See also