linux-kernel - Re: [PATCH] livepatch: Let compiler put module initialized function to section ".init.text"

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Message-ID: <20150522140302.GA6104@huangminfeis-MacBook-Pro.local>
Date:	Fri, 22 May 2015 22:03:02 +0800
From:	Minfei Huang <mnfhuang@...il.com>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
Cc:	Minfei Huang <mhuang@...hat.com>, sjenning@...hat.com,
	jkosina@...e.cz, vojtech@...e.cz, live-patching@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] livepatch: Let compiler put module initialized function
 to  section ".init.text"

On 05/22/15 at 08:25P, Josh Poimboeuf wrote:
> On Fri, May 22, 2015 at 02:10:32PM +0800, Minfei Huang wrote:
> > From: Minfei Huang <mnfhuang@...il.com>
> > 
> > Usually we prefer to let compiler put the module initialized function to
> > section ".init.text". Thus this text in memory will be freed in future.
> > 
> > Once we add the "__init" preceding function name, we can use following
> > command to find it in specfied section.
> > 
> >   $ objdump -t -j .init.text built-in.o
> > 
> >   built-in.o:     file format elf64-x86-64
> > 
> >   SYMBOL TABLE:
> >   0000000000000000 l    d  .init.text	0000000000000000 .init.text
> >   0000000000000000 l     F .init.text	000000000000004e klp_init
> > 
> > Signed-off-by: Minfei Huang <mnfhuang@...il.com>
> 
> The patch looks good but can you make the subject more concise?  Maybe
> something like:
> 
>   livepatch: annotate klp_init() with __init

Sure. Will modify the subject.

Thanks
Minfei

> 
> Thanks.
> 
> -- 
> Josh
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