Re: [PATCH v2 0/3] support for broken memory modules (BadRAM)

From: Andi Kleen
Date: Thu Jun 23 2011 - 20:59:25 EST

On Thu, Jun 23, 2011 at 09:30:37AM -0700, H. Peter Anvin wrote:
> On 06/23/2011 08:37 AM, Stefan Assmann wrote:
> >
> > According to Rick's reply in this thread a damaged row in a DIMM can
> > easily cause a few thousand entries in the e820 table because it doesn't
> > handle patterns. So the question I'm asking is, is it acceptable to
> > have an e820 table with thousands maybe ten-thousands of entries?
> > I really have no idea of the implications, maybe somebody else can
> > comment on that.
> >
> Given that that is what actually ends up happening in the kernel at some
> point anyway,

hwpoison can poison most pages without any lists. Read Stefan's original patch.

The only thing that needs list really is conflict handling with
early allocations.

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