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

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Message-ID: <20080622214632.4a140069@kopernikus.site>
Date:	Sun, 22 Jun 2008 21:46:32 +0200
From:	Bernhard Walle <bwalle@...e.de>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	kexec@...ts.infradead.org, x86@...nel.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" <yhlu.kernel@...il.com> [2008-06-20 13:34]:
>
> On Fri, Jun 20, 2008 at 8:57 AM, Bernhard Walle <bwalle@...e.de> wrote:
> > This patch brings back limiting of the E820 map when a user-defined
> > E820 map is specified. While the behaviour of i386 (32 bit) was to limit
> > the E820 map (and /proc/iomem), the behaviour of x86-64 (64 bit) was not to
> > limit.
> 
> then if you kexec new kernel, the second kernel will be have that
> limitation too.
> 
> any problem that you encountered without this patch?

No, because the new kexec tool uses the /proc/firmware_mem or whatever
it is called.



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