Il 01/07/2013 01:47, Rusty Russell ha scritto:
> > > 
> > > Mainly because I'm not sure that *all* devices are now safe.  Are they?
> >
> > virtio-scsi's implementation in QEMU is not safe (been delaying that for
> > too long, sorry), but the spec is safe.
> 
> Then if we added a transport feature, we couldn't use it :(

Transport feature bits are still negotiated per device though.
virtio-scsi devices in QEMU would not negotiate that feature.

Paolo

> So I think it needs to be a per-device feature bit.

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