linux-kernel - Re: [crash, bisected] Re: [PATCH 3/4] x86

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Date:	Mon, 23 Jun 2008 15:41:21 -0400
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Mike Travis <travis@....com>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Christoph Lameter <clameter@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [crash, bisected] Re: [PATCH 3/4] x86_64: Fold pda into per cpu
 area

Mike Travis wrote:
> The syntax error is at this "DATA(0)" statement.  I don't find this as a
> linker script command or a macro.  What is it we're trying to do with this?
>   

In Eric's sample, it's intended to prevent there being an empty section, 
which can cause linker bugs.  In your case it probably isn't necessary, 
since you're also putting the percpu data in that section.

"DATA" is probably a typo.  It should be "LONG" or something like that.  
(See "3.6.5 Output Section Data" in the linker manual.)

    J
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