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From: David Madore <david.madore@ens.fr>
To: linux-kernel@vger.kernel.org
Subject: Re: broken memory chip -> software fix?
Date: Sat, 18 Aug 2001 01:08:10 +0200	[thread overview]
Message-ID: <20010818010810.A6422@clipper.ens.fr> (raw)
In-Reply-To: <20010817161505.A25194@clipper.ens.fr> <E15XkYl-0007OT-00@the-village.bc.nu>
In-Reply-To: <E15XkYl-0007OT-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Fri, Aug 17, 2001 at 03:25:15PM +0100

On Fri, Aug 17, 2001 at 03:25:15PM +0100, Alan Cox wrote:
> > Now that I know the address, is there a way I can prevent Linux from
> > using that region of memory in any way?  The simplest and cleanest
> 
> Yep. The mem= option can exclude stuff. Alternatively you can
> patch arch/i386/kernel/mm/init.c:mem_init() to skip that page. 

Thanks.  The mem= option works perfectly:

	mem=78184k@1024k mem=313988k@79212k

will avoid the incriminated page.

Thanks also to those who pointed out the mmap() procedure: that will
let toy with the page in question - after all, a defective memory chip
is a fun thing to play with.

-- 
     David A. Madore
    (david.madore@ens.fr,
     http://www.eleves.ens.fr:8080/home/madore/ )

  reply	other threads:[~2001-08-17 23:08 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-08-17 14:15 David Madore
2001-08-17 14:21 ` John Levon
2001-08-17 14:25 ` Alan Cox
2001-08-17 23:08   ` David Madore [this message]
2001-08-17 14:26 ` Richard B. Johnson
2001-08-17 14:46   ` Dr. Michael Weller

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