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Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command lin
From: |
Eric Auger |
Subject: |
Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax |
Date: |
Mon, 18 Jan 2016 14:57:37 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 |
Hi Peter,
On 01/18/2016 02:34 PM, Peter Maydell wrote:
> On 18 January 2016 at 13:29, Eric Auger <address@hidden> 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
>
- [Qemu-devel] [PULL 0/5] target-arm queue, Peter Maydell, 2016/01/11
- [Qemu-devel] [PULL 2/5] hw/dma/xilinx_axidma: remove dead code, Peter Maydell, 2016/01/11
- [Qemu-devel] [PULL 1/5] i.MX: move i.MX31 CCM object to register array, Peter Maydell, 2016/01/11
- [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Peter Maydell, 2016/01/11
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Eric Auger, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Peter Maydell, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax,
Eric Auger <=
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Peter Maydell, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Eric Auger, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Alex Williamson, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Eric Auger, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Peter Maydell, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Markus Armbruster, 2016/01/18
- Re: [Qemu-devel] [PULL 5/5] hw/arm/virt: Support legacy -nic command line syntax, Alex Williamson, 2016/01/18
[Qemu-devel] [PULL 3/5] xlnx-zynqmp: Add support for high DDR memory regions, Peter Maydell, 2016/01/11
Re: [Qemu-devel] [PULL 0/5] target-arm queue, Peter Maydell, 2016/01/11