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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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