Hi Ohad,

>> A simplest thing to do is change dev id. rusty?
>
> For generic usage, this is correct.  But my opinion is that fallback on
> feature non-ack is quality-of-implementation issue: great to have, but
> there are cases where you just want to fail with "you're too old".
>
> And in this case, an old system simply will never work.  So it's a
> question of how graceful the failure is.
>
> Can your userspace loader can refuse to proceed if the driver doesn't
> ack the bits?  If so, it's simpler than a whole new ID.

Ohad: Are there any way we could avoid starting up the remote processor
if mandatory virtio features (such as DMA memory) are not supported by
the virtio-driver?

Regards,
Sjur
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