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RE: [Xen-devel] "Iomem mapping not permitted" during windows crash dump

To: "Paul Durrant" <paul.durrant@xxxxxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] "Iomem mapping not permitted" during windows crash dump under GPLPV
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Tue, 2 Feb 2010 21:47:24 +1100
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Thread-topic: [Xen-devel] "Iomem mapping not permitted" during windows crash dump under GPLPV
> 
> Keir Fraser wrote:
> > On 30/01/2010 08:30, "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
wrote:
> >
> >> So there is definitely nothing I could tell Xen to do with a DomU
PFN
> >> that would remove the p2m mapping?
> >
> > If you balloon out a page, that would do it.
> >
> 
> Yes, it certainly would and I've seen it many times. I'm fairly sure
> that by just ignoring the failed block writes coming back from
> blkback/tap and carrying on you still end up with a usable MEMORY.DMP
> after reboot.
> 

Yes, that works. I still eye the error messages with contempt though :)

James

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