Ksplice

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Revision as of 06:00, 11 February 2013 by Ruan (Talk | contribs) (ksplice needs a patch, mark as out of date for now)

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Notes: please use the first argument of the template to provide more detailed indications. (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.

Installation

Install the kspliceAUR package from the Arch User Repository.

Configuration

Usage

Note: The following steps have only been tested on a custom Arch kernel.

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Reason: KSplice currently compiles an outdated kmod version and needs to be patched (Discuss in Talk:Ksplice#)

First, you need some files from the previous kernel build: System.map and .config.

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:

# mkdir -p src/ksplice

Copy System.map over from the previous build:

# cp System.map src/ksplice

Copy .config into the tree if it is not already in the source tree:

# cp .config src/

Create a ksplice patch and wait for the kernel to rebuild:

# ksplice-create --diffext=new src/

Apply the newly generated patch to the running kernel:

# ksplice-apply ksplice-*.tar.gz

See also