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Message-ID: <m1eirqtmey.fsf@fess.ebiederm.org>
Date:	Wed, 05 Aug 2009 06:33:57 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Amerigo Wang <amwang@...hat.com>
Cc:	linux-kernel@...r.kernel.org, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, Neil Horman <nhorman@...hat.com>,
	akpm@...ux-foundation.org, Ingo Molnar <mingo@...e.hu>,
	Anton Vorontsov <avorontsov@...mvista.com>
Subject: Re: [Patch 0/7] Implement crashkernel=auto

Amerigo Wang <amwang@...hat.com> writes:

> This series of patch implements automatically reserved memory for crashkernel,
> by introducing a new boot option "crashkernel=auto". This idea is from Neil.
>
> In case of breaking user-space applications, it modifies this boot option after
> it decides how much memory should be reserved.
>
> On different arch, the threshold and reserved memory size is different. Please
> refer patch 7/7 which contains an update for the documentation.
>
> Note: This patchset was only tested on x86_64 with differernt memory sizes.

This seems like a silly hard code. Especially for a feature distros don't
care enough about to implement a working initrd for.

Has anyone bothered to justify those large amounts of memory?
Where does the 128M go?

Please pardon me for being a cynic but I don't see the command line option
being the bottleneck for real users to make this work.

Eric
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