On 08/25/2009 05:22 AM, Anthony Liguori wrote:
I think 2.6.32 is pushing it.
2.6.32 is pushing it, but we need to push it.
I think some time is needed to flush out the userspace interface. In particular, I don't think Mark's comments have been adequately addressed. If a version were merged without GSO support, some mechanism to do feature detection would be needed in the userspace API.
I don't see any point in merging without gso (unless it beats userspace with gso, which I don't think will happen). In any case we'll need feature negotiation.
I think this is likely going to be needed regardless. I also think the tap compatibility suggestion would simplify the consumption of this in userspace.
What about veth pairs?
I'd like some time to look at get_state/set_state ioctl()s along with dirty tracking support. It's a much better model for live migration IMHO.
My preference is ring proxying. Not we'll need ring proxying (or at least event proxying) for non-MSI guests.
I think so more thorough benchmarking would be good too. In particular, netperf/iperf runs would be nice.
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