[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Virtual Bus
[Keir Fraser] > On 06/04/2009 16:09, "Tej" <bewith.tej@xxxxxxxxx> wrote: >> Are xen ppl are thinking to leverage Virtual Bus Technology recently >> discussed on LKML >> http://lkml.org/lkml/2009/3/31/339 >> http://developer.novell.com/wiki/index.php/Virtual-bus > We probably could, with some small Xen-specific additions to the > Virtual Bus framework. However it'll be interesting to see whether > it's a useful design point between our fully PV drivers (which have > pretty decent performance) and full device passthrough (where > there's no need to go through dom0 at all on the data path). In > particular, we can do device hotplug with device passthrough, which > may give us the flexibility that VB promises anyway. One can also instantiate a virtual PCI bus in dom0 populated with virtual devices (which can be mapped down to real devices). As far as I understand vbus, this fulfills all the promises of vbus without introducing a new bus concept. It allows you to use legacy PCI device discovery mechanisms and even enables mapping the virtual devices to other guests (as PCI passthrough). eSk _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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