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    SubjectRe: A set of "standard" virtual devices?
    Jeremy Fitzhardinge wrote:
    >
    > So, what you're saying is:
    >
    > 1. assuming there's going to be a vast number of miscellaneous devices
    > 2. it would be best if there were one per device rather than one per
    > hypervisor per device
    > 3. so we'd have one linux device driver
    >
    > But this implies that the work is just pushed off into all the
    > hypervisors to support this new device over the generic interface;
    > there's no overall reduction of code or complexity, other than making
    > "wc" on the kernel source smaller.
    >

    Sure there is, assuming you deal about heterogenous clients. I'm not
    sure Xen is (although that is, as far as I understand, being remedied),
    which might explain your different perspective.

    Consider that this may not even be about Linux -- having these standard
    devices would enable, say, 'doze device drivers to be written and shared.

    > That said, something like USB is probably the best bet for this kind of
    > low-performance device. I think. Not that I really know anything about
    > USB.

    USB is evil in the extreme for this kind of stuff. Although in theory
    you can have any HCI you want, in practice the ones that are implemented
    requires a very complex framework for full compatiblity.

    -hpa
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