linux-kernel - Re: [PATCH 3/3] Limit E820 map when a user-defined memory map is specified

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Date:	Tue, 24 Jun 2008 16:07:29 +0200
From:	Bernhard Walle <bwalle@...e.de>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	x86@...nel.org, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org, vgoyal@...hat.com
Subject: Re: [PATCH 3/3] Limit E820 map when a user-defined memory map is
 specified

* Yinghai Lu [2008-06-22 13:11]:
>
> On Sun, Jun 22, 2008 at 12:56 PM, Bernhard Walle <bwalle@...e.de> wrote:
> > * "Yinghai Lu" <yhlu.kernel@...il.com> [2008-06-20 13:34]:
> >>
> >> any problem that you encountered without this patch?
> >
> > Sorry, forgot to answer that question.
> >
> > Yes, if you use mem=3G and take a dump, kexec builds the ELF core
> > headers for the full memory size, which means that the dump is as large
> > as the physical memory of the machine is, which doesn't make sense.
> 
> can we use e820_update_range instead? so e820_setup_gap still can get
> correct value?

Yes, good idea. Patch is in the queue ...


Bernhard
-- 
Bernhard Walle, SUSE LINUX Products GmbH, Architecture Development
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