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SubjectRe: [RFC PATCH 00/17] virtual-bus
Chris Wright wrote:
> * Gregory Haskins (ghaskins@novell.com) 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
go-round.

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. :)

-Greg

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