linux-kernel - Re: [PATCH 2.6.24] mm: BadRAM support for broken memory

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Date:	Sat, 08 Mar 2008 11:25:47 +0100
From:	"H. Peter Anvin" <hpa@...or.com>
To:	KOSAKI Motohiro <m-kosaki@...es.dti.ne.jp>
CC:	Pavel Machek <pavel@....cz>, Rick van Rein <rick@...rein.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.24] mm: BadRAM support for broken memory

KOSAKI Motohiro wrote:
> Hi!
> 
>>  > This is the latest version of the BadRAM patch, which makes it possible to
>>  > run Linux on broken memory.  The patch supports the use of a lesser grade
>>  > of memory, which could be marketed more cheaply and which would thereby
>>  > decrease the environmental stress caused by the process of (memory) chip
>>  > manufacturing.
>>
>>  What is wrong with mem=exactmap?
> 
> Agghh,
> I had forgotten that.
> 
> you are right, may be.

More importantly:

	memmap=<size>$<len>

already allows you to knock arbitrary holes in the memory map.

	-hpa

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