From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Durrant <paul.durrant@citrix.com>
Subject: Re: "Iomem mapping not permitted" during windows crash
	dump under GPLPV
Date: Tue, 2 Feb 2010 10:24:25 +0000
Message-ID: <4B67FD59.2050801@citrix.com>
References: <C789AD6B.814C%keir.fraser@eu.citrix.com>
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To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: James Harper <james.harper@bendigoit.com.au>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
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Keir Fraser wrote:
> On 30/01/2010 08:30, "James Harper" <james.harper@bendigoit.com.au> 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.

   Paul

-- 
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Paul Durrant, Software Engineer

Citrix Systems (R&D) Ltd.
First Floor, Building 101
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