Re: broken memory chip -> software fix?

David Madore (david.madore@ens.fr)
Sat, 18 Aug 2001 01:08:10 +0200

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/ )
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