Hi Peter, On 01/18/2016 02:34 PM, Peter Maydell wrote: > On 18 January 2016 at 13:29, Eric Auger <eric.au...@linaro.org> wrote: >> How is it supposed to live with Passthrough'ed NIC? Current way to >> instantiate a VFIO platform NIC looks like: >> >> -device vfio-amd-xgbe,host=e0900000.xgmac >> where vfio-amd-xgbe is the name of the VFIO AMD XGBE platform QEMU >> device and e0900000.xgmac is the name of the device in >> /sys/bus/platform/devices. > >> Before that commit I was able to instantiate this VFIO device and got >> networking working, testing it with ping. Now ping don't work anymore. I >> Guess I now use this other default NIC? >> >> Curiously it does not seem to prevent networking with upstreamed Calxeda >> Midway device and I did not figure why yet? > > Hmm, I guess this is changing things in that we now will have a > virtio PCI device appearing if you use the default (-net nic -net user) > settings. But I don't see why that would particularly interfere > with VFIO passthrough, except in as much as the guest now has > two network cards in it and might be preferring one as eth0 > rather than the other... Yes that's what currently happens I think. I get the slirp thing on eth0 and my passthrough'ed device on eth1. That's not very straightforward for the end-user to get those 2 NIC's now. In case I passthrough some NIC's I would have expected this default NIC not be instantiated?
Alex, how do you manage on x86 platforms with VFIO-PCI NIC? Thanks Eric > > thanks > -- PMM >
