linux-kernel - Re: [PATCH 2/2] ppc64le live patch: get rid of mini stack frame

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Date:	Thu, 10 Mar 2016 13:58:39 +0100 (CET)
From:	Jiri Kosina <jikos@...nel.org>
To:	Petr Mladek <pmladek@...e.com>
cc:	Torsten Duwe <duwe@....de>, jeyu@...hat.com,
	linux-kernel@...r.kernel.org, rostedt@...dmis.org,
	kamalesh@...ux.vnet.ibm.com, linuxppc-dev@...abs.org,
	live-patching@...r.kernel.org, mbenes@...e.cz
Subject: Re: [PATCH 2/2] ppc64le live patch: get rid of mini stack frame

On Thu, 10 Mar 2016, Petr Mladek wrote:

> BTW: How is this solved in kretprobes? Or is it easier there?

Is that really a problem? With kretprobes you're never performing the 
module->core->module transition in "one" redirection, right?

The 'kretprobe_trampoline' is a global symbol, and hence everybody is 
generating 'global call' for it, and that's pretty much it.

-- 
Jiri Kosina
SUSE Labs