linux-kernel - Re: [PATCH] add hook to read_from_oldmem() to check for non-ram pages

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Date:	Fri, 6 May 2011 21:39:16 +0200
From:	Olaf Hering <olaf@...fle.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org
Subject: Re: [PATCH] add hook to read_from_oldmem() to check for non-ram pages

On Fri, May 06, Andrew Morton wrote:

> So as your module will have a reference to vmcore.c's register and unregister
> functions, nothing needs to be done: the presence of the client module alone
> will pin the vmcore.c module.

I meant the other way around. Keep /proc/vmcore open and read from it,
then try to rmmod foo.ko which provides fn().

Olaf
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