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    SubjectRe: Pe: [PATCH v5 1/3] virtio-scsi: first version
    On Tue, Feb 07, 2012 at 10:54:54AM +0100, Paolo Bonzini wrote:
    > >Also, lun[1] = sc->device->id means that only 255 SCSI target IDs will be
    > >supported. Think about bigger usage scenarios, such as FCP networks with
    > >several hundred HBAs in the net. If you want to have the target ID<->HBA
    > >mapping the same as on the guest as on the host, then 255 virtual target
    > >IDs could be a limit.
    > I think you would hit other scalability limitations well before
    > that. I plan to give each target its own MSI-X interrupt, but there
    > is no infinite supplies of those either.

    virtio-pci generally lets guests share MSI-X vectors between queues,
    why not allow this here?


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