Re: [PATCH 0/16 v6] PCI: Linux kernel SR-IOV support

[Greg KH]

On Thu, Nov 06, 2008 at 03:58:54PM -0700, Matthew Wilcox wrote:
> > What we would rather do in KVM, is have the VFs appear in the host as 
> > standard network devices.  We would then like to back our existing PV 
> > driver to this VF directly bypassing the host networking stack.  A key 
> > feature here is being able to fill the VF's receive queue with guest 
> > memory instead of host kernel memory so that you can get zero-copy 
> > receive traffic.  This will perform just as well as doing passthrough 
> > (at least) and avoid all that ugliness of dealing with SR-IOV in the guest.
> 
> This argues for ignoring the SR-IOV mess completely.  Just have the
> host driver expose multiple 'ethN' devices.

That would work, but do we want to do that for every different type of
driver?

thanks,

greg k-h
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