linux-kernel - Re: kexec documentation missing, bad links in kdump.txt

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Message-ID: <20101118142322.GA13933@redhat.com>
Date:	Thu, 18 Nov 2010 09:23:22 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Pavel Machek <pma@...go.com>
Cc:	kernel list <linux-kernel@...r.kernel.org>, horms@...ge.net.au,
	akpm@...ux-foundation.org, randy.dunlap@...cle.com
Subject: Re: kexec documentation missing, bad links in kdump.txt

On Thu, Nov 18, 2010 at 10:50:15AM +0100, Pavel Machek wrote:
> Hi!
> 
> Where can one get kexec documentation?
> 
> (In particular, we are trying to get it to boot on ARM board, and
> wonder if something like CONFIG_RELOCATABLE_KERNEL is needed.)
> 

For kexec you will not need CONFIG_RELOCATABLE_KERNEL. But if you also
want to use kdump and use same bzImage as first kernel then you will
need relocatable kernel support.

For kdump I had done two presentations at OLS. You might find little
bit of kexec details too.

Kdump: Smarter, Easier, Trustier
http://www.kernel.org/doc/ols/2007/ols2007v1-pages-167-178.pdf

Kdump, a kexec based crash dumping mechanism.
http://lse.sourceforge.net/kdump/documentation/ols2oo5-kdump-paper.pdf

thanks
Vivek
 
> Unfortunately, only pieces mentioning kexec are kdump pieces
> (Documentation/kdump/kdump.txt), and links there, such as
> 
> http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/kexec-tools.tar.gz
> 
> http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/README.html
> 
> http://www.kernel.org/git/?p=linux/kernel/git/horms/kexec-tools.git
> 
> are no longer valid :-(.
> 								Pavel
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