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Re: [Xen-devel] "Iomem mapping not permitted" during windows crash dump
| To: | Jan Beulich <JBeulich@xxxxxxxxxx>, James Harper <james.harper@xxxxxxxxxxxxxxxx>, Paul Durrant <Paul.Durrant@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] "Iomem mapping not permitted" during windows crash dump under GPLPV |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 02 Feb 2010 13:30:47 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 02 Feb 2010 05:31:13 -0800 |
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| Thread-topic: | [Xen-devel] "Iomem mapping not permitted" during windows crash dump under GPLPV |
| User-agent: | Microsoft-Entourage/12.23.0.091001 |
On 02/02/2010 11:27, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: >>>> "James Harper" <james.harper@xxxxxxxxxxxxxxxx> 02.02.10 12:07 >>> >> Someone on the ntdev list suggested that one approach could be to >> allocate a single page at setup time and map that into each 'hole' I >> leave behind by ballooning pages out. I haven't checked if Xen supports >> a HVM DomU randomly mapping pages like that and if it will let it map >> the same page multiple times, but it would remove the errors and keep >> everything happy. > > There is no question - it just has to support this. Linux would not work > without this (nor can I imagine any other OS would). I don't think a page can be simultaneously mapped at multiple locations in a guest's p2m though. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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