Re: [PATCH] livepatch: Add some basic LivePatch documentation

From: Jiri Kosina
Date: Thu Mar 10 2016 - 04:09:30 EST

On Wed, 9 Mar 2016, Petr Mladek wrote:

> LivePatch framework deserves some documentation, definitely.
> This is an attempt to provide some basic info. I hope that
> it will be useful for both LivePatch producers and also
> potential developers of the framework itself.

Thanks for starting the efforts; this is really needed if we want the
infrastructure to be used also by someone else than its developers :)

[ ... snip ... ]
> +7. Limitations
> +==============

Miroslav Benes, who is working on creating the actual patches we are
shipping for our kernels, should already have a decent cheat-sheet
regarding things that the patch author should be extra careful when
creating a patch (inlining and other gcc optimizations such as isra,
functions that use switch_to(), percpu, ...).

I am not really sure whether these should go to limitations, or maybe
they'd better be placed into a separate chapter, but I'd really like to
see it included.


Jiri Kosina