linux-kernel - Re: [PATCH 2/2] kernel: add support for live patching

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Date:	Thu, 6 Nov 2014 15:02:04 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Seth Jennings <sjenning@...hat.com>
Cc:	Josh Poimboeuf <jpoimboe@...hat.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Vojtech Pavlik <vojtech@...e.cz>,
	live-patching@...r.kernel.org, kpatch@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] kernel: add support for live patching

On Thu,  6 Nov 2014 08:39:08 -0600
Seth Jennings <sjenning@...hat.com> wrote:

> --- /dev/null
> +++ b/kernel/livepatch/Kconfig
> @@ -0,0 +1,11 @@
> +config LIVE_PATCHING
> +	tristate "Live Kernel Patching"
> +	depends on DYNAMIC_FTRACE_WITH_REGS && MODULES && SYSFS && KALLSYMS_ALL
> +	default m

Nuke this default. This should be default 'n', which is what kconfig
defaults to when none is mentioned.

-- Steve

> +	help
> +	  Say Y here if you want to support live kernel patching.
> +	  This setting has no runtime impact until a live-patch
> +	  kernel module that uses the live-patch interface provided
> +	  by this option is loaded, resulting in calls to patched
> +	  functions being redirected to the new function code contained
> +	  in the live-patch module.
--
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