linux-kernel - Re: [RFC PATCH v3 6/6] Documentation: livepatch: outline the Elf format of a livepatch module

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Date:	Tue, 12 Jan 2016 08:45:08 -0600
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Petr Mladek <pmladek@...e.com>
Cc:	Jessica Yu <jeyu@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Seth Jennings <sjenning@...hat.com>,
	Jiri Kosina <jikos@...nel.org>,
	Vojtech Pavlik <vojtech@...e.com>,
	Jonathan Corbet <corbet@....net>,
	Miroslav Benes <mbenes@...e.cz>, linux-api@...r.kernel.org,
	live-patching@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [RFC PATCH v3 6/6] Documentation: livepatch: outline the Elf
 format of a livepatch module

On Tue, Jan 12, 2016 at 01:09:51PM +0100, Petr Mladek wrote:
> Hi Jessica,
> 
> first, thanks a lot for writing a documentation. It is really
> appreciated!
> 
> To be honest, I am not sure if it makes sense to give feedback
> at this stage. It seems that there still will be some changes
> in the elf format.
> 
> On Fri 2016-01-08 14:28:24, Jessica Yu wrote:
> > Document the special Elf sections and constants livepatch modules use.
> > 
> > Signed-off-by: Jessica Yu <jeyu@...hat.com>
> > ---
> >  Documentation/livepatch/patch-module-format.txt | 106 ++++++++++++++++++++++++
> >  1 file changed, 106 insertions(+)
> >  create mode 100644 Documentation/livepatch/patch-module-format.txt
> 
> I would call this symbol-relocation.txt or so. It describes only this
> part of the patch format.
> 
> > 
> > diff --git a/Documentation/livepatch/patch-module-format.txt b/Documentation/livepatch/patch-module-format.txt
> > new file mode 100644
> > index 0000000..d825629
> > --- /dev/null
> > +++ b/Documentation/livepatch/patch-module-format.txt
> > @@ -0,0 +1,106 @@
> > +---------------------------
> > +Livepatch module Elf format
> > +---------------------------
> 
> I would start with a description what symbols are relocated and why
> it needs to be done a special way.

The cover letter has this information, and a lot of other useful
background.  It would be good to add all that background to this
document as an introduction.

-- 
Josh