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