linux-kernel - Re: [PATCH 2/3 v4] livepatch: add old_sympos as disambiguator field to klp

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Message-ID: <alpine.LNX.2.00.1511121122560.9440@pobox.suse.cz>
Date:	Thu, 12 Nov 2015 11:23:48 +0100 (CET)
From:	Miroslav Benes <mbenes@...e.cz>
To:	Chris J Arges <chris.j.arges@...onical.com>
cc:	live-patching@...r.kernel.org, jeyu@...hat.com,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Seth Jennings <sjenning@...hat.com>,
	Jiri Kosina <jikos@...nel.org>,
	Vojtech Pavlik <vojtech@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3 v4] livepatch: add old_sympos as disambiguator field
 to klp_reloc

On Wed, 11 Nov 2015, Chris J Arges wrote:

> In cases of duplicate symbols, sympos will be used to disambiguate instead
> of val. By default old_sympos will be 0, and patching will only succeed if
> the symbol is unique. Specifying a positive value will ensure that
> occurrence of the symbol will be used for patching if it is valid.

Again "...occurrence of the symbol in kallsyms for the patched object 
will be used..."

>  2 files changed, 18 insertions(+), 61 deletions(-)

And this is indeed great.

Miroslav
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