linux-kernel - Re: [PATCH] crash dump: don't delete non-E820

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Message-ID: <50972B94.7020106@zytor.com>
Date:	Mon, 05 Nov 2012 03:59:32 +0100
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] crash dump: don't delete non-E820_RAM during init

On 11/05/2012 03:57 AM, Zhang, Jun wrote:
> Hello, Anvin
> 1) use "memmap=exactmap", which remove all ranges include ram and non-ram range. So my first patch reserve the non-ram range.
> 2)don't use " memmap=exactmap ", so it reserve all ranges. But we only need non-ram, so we need kernel to remove RAM, just as my second patch.

Sorry, you have completely lost me now.  You seem to be contradicting
yourself from one message to another.

	-hpa


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