linux-kernel - Re: [PATCH 15/15] modpost: convert modpost to use HEAD_TEXT

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Message-ID: <alpine.DEB.2.00.0904261805080.28205@vinegar-pot.mit.edu>
Date:	Sun, 26 Apr 2009 18:18:48 -0400 (EDT)
From:	Anders Kaseorg <andersk@....EDU>
To:	Sam Ravnborg <sam@...nborg.org>
cc:	Tim Abbott <tabbott@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Waseem Daher <wdaher@....edu>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Andi Kleen <andi@...stfloor.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Jeff Arnold <jbarnold@....edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jon Masters <jonathan@...masters.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	"Theodore Ts'o" <tytso@....edu>,
	Nikanth Karthikesan <knikanth@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Américo Wang <xiyou.wangcong@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Kyle McMartin <kyle@...artin.ca>,
	David Howells <dhowells@...hat.com>
Subject: Re: [PATCH 15/15] modpost: convert modpost to use HEAD_TEXT_SECTION
 macro.

On Sun, 26 Apr 2009, Sam Ravnborg wrote:
> I have seen linkers that added a number after the section names
> in certain situations. Often this is due to mix of sections
> with different flags ("ax" versus no "ax").
> This is the background for the wildcard.
> 
> With your patchset we should not see any such users - but we 
> should then warn if they showed up anyway if we do not silently
> support them.

Right, that is exactly the purpose of my
  [PATCH] modpost: Check the section flags, not name, to catch missing 
  "ax"/"aw"
  <http://lkml.org/lkml/2009/2/26/503>
which is also the second patch in this thread (as [PATCH v3 2/3]).

This patch also catches some possible bugs that the existing check misses, 
even without -ffunction-sections, so it would be nice to get it merged 
independently.

Anders
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