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Message-ID: <20070918172108.GD5966@ucw.cz>
Date: Tue, 18 Sep 2007 17:21:08 +0000
From: Pavel Machek <pavel@....cz>
To: Bernhard Walle <bwalle@...e.de>
Cc: kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-arch@...r.kernel.org
Subject: Re: [patch 7/7] Add documentation for extended crashkernel syntax
Hi!
> This adds the documentation for the extended crashkernel syntax into
> Documentation/kdump/kdump.txt.
Should you also update kernel-parameters.txt?
> +For example:
> +
> + crashkernel=512M-2G:64M,2G-:128M
> +
> +This would mean:
> +
> + 1) if the RAM is smaller than 512M, then don't reserve anything
> + (this is the "rescue" case)
> + 2) if the RAM size is between 512M and 2G, then reserve 64M
> + 3) if the RAM size is larger than 2G, then reserve 128M
Why is this useful? I mean... if 64M is enough to save a dump, why use
128M? ...or does the required size somehow scale with memory in
machine? (pagetables?)
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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