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Re: [Xen-devel] Problem: WIndows domu switches power off
| To: | Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Problem: WIndows domu switches power off |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Wed, 10 Nov 2010 13:38:33 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 10 Nov 2010 05:39:16 -0800 |
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| Thread-topic: | [Xen-devel] Problem: WIndows domu switches power off |
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On 10/11/2010 13:27, "Dietmar Hahn" <dietmar.hahn@xxxxxxxxxxxxxx> wrote: > The Intel VTd-spec writes in chapter 8.3. "DMA Remapping Hardware Unit > > Definition Structure" that the "Segment Number" is the PCI Segment associated > > with this unit. > > So what is a PCI Segment here? PCI segments/domains are groupings of PCI buses. So they're a further step up the hierarchy from bus-dev-fn. Very few x86 systems have multiple segments, so it's almost certain that segment=0 is correct for all PCI devices in your system. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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