On Mon, Sep 19, 2016 at 09:07:08PM +0200, Paolo Bonzini wrote:
> 
> 
> On 19/09/2016 19:03, Stephen Hemminger wrote:
> > Ideally, the DPDK driver should use the best algorithm it can negotiate.
> > Be sure and test with old RHEL6 type systems, modern enterprise (RHEL/SLES)
> > and also Google Compute which has there own virtio.  Not sure what virtual
> > box is doing?? 
> 
> RHEL6 has all pre-1.0 features, but vbox doesn't have indirect
> descriptors.  No idea about GCE.
> 
> Paolo

As long as the compatibility code is maintained,
it might be cheaper to do
        if (packed_ring)
                completely separate code path

than try to mix in compatibility.

-- 
MST

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