linux-kernel - Re: [PATCH] To crash dump, we need keep other memory type except E820_RAM, because other type come from BIOS or firmware is used by other code(for example: PCI

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Message-ID: <50909120.3040101@zytor.com>
Date:	Tue, 30 Oct 2012 19:46:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Zhang, Jun" <jun.zhang@...el.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"x86@...nel.org" <x86@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Fleming, Matt" <matt.fleming@...el.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] To crash dump, we need keep other memory type except
 E820_RAM, because other type come from BIOS or firmware is used by other
 code(for example: PCI_MMCONFIG).

On 10/30/2012 06:26 PM, Zhang, Jun wrote:
> From aebc336baa7ec2d4ccb6f21166770c7d2ee26cba Mon Sep 17 00:00:00 2001
> From: jzha144 <jun.zhang@...el.com>
> Date: Wed, 31 Oct 2012 08:51:18 +0800
> Subject: [PATCH] To crash dump, we need keep other memory type except
>  E820_RAM, because other type come from BIOS or firmware is
>  used by other code(for example: PCI_MMCONFIG).

I'm sorry, I can't quite parse the description or the comment... could
you clarify it a bit?  I think I know what you mean, but there is
clearly risk for misunderstandings.

	-hpa

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