linux-kernel - Re: Determine version of kernel that produced vmcore

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Message-ID: <20070710063624.GB5471@in.ibm.com>
Date:	Tue, 10 Jul 2007 12:06:24 +0530
From:	Vivek Goyal <vgoyal@...ibm.com>
To:	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Bernhard Walle <bwalle@...e.de>
Subject: Re: Determine version of kernel that produced vmcore

On Fri, Jul 06, 2007 at 03:28:14PM +0200, Bernhard Walle wrote:
> Hello,
> 
> does anybody know a _reliable_ way to determine the version the kernel
> that produced a vmcore file? This means not scanning for a specific
> string or something like that which can fail on random memory.
> 
> Would it make sense to add a ELF PT_NOTE section in the vmcore?
> 

To me it makes sense to append an ELF NOTE to vmcore which can uniquely
associate that vmcore with a particular vmlinux file (Some string
equivalent to the output of uname -a).

Interesting thing is that to find version of vmlinux, you will still be
doing <string | grep "some pattern">. Probably then we should append an
ELF note to vmlinux file also?

Thanks
Vivek
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