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SubjectRe: [RFC PATCH 00/17] virtual-bus
Chris Wright wrote:
> * Gregory Haskins ( wrote:
>> Let me ask you this: If you had a clean slate and were designing a
>> hypervisor and a guest OS from scratch: What would you make the bus
>> look like?
> Well, virtio did have a relatively clean slate. And PCI (as _one_
> transport option) is what it looks like. It's not the only transport
> (as Avi already mentioned it works for s390, for example).

Got it. Thanks.

> BTW, from my brief look at vbus, it seems pretty similar to xenbus.

If you are referring to the guest side interface, it was actually
inspired by lguest's bus (I forget what Rusty called it now, though).
I think I actually declared that in the original patch series I put out
1.5 years ago, but I might have inadvertently omitted that on this

I think XenBus is more of an event channel infrastructure, isn't it?
But in any case, I think the nature of getting PV drivers into a guest
is relatively similar, so I wouldn't be surprised if there were
parallels in quite a few of the implementations. In fact, I chose a
generic name like "vbus" in hopes that it could be used across different
hypervisors. :)


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