[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Problem: WIndows domu switches power off
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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