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Subject: Re: [virtio-dev] [PATCH v4] content: Introduce VIRTIO_NET_F_STANDBY feature
On 9/27/2018 9:17 AM, Michael S. Tsirkin wrote:
On Thu, Sep 27, 2018 at 10:17:37AM +0300, Sameeh Jubran wrote:What do you think about the following alternative implementation which uses cross id validation. -device virtio-net,standby=<device_id_of_vfio_device>,id=<device_id_of_virtio_net_device> -vfio #address,id=<device_id_of_vfio_device>,primary=<device_id_of_virtio_net_device>virtio is a standby device, isn't it? Besides that I don't see issues with this API.
Yes. I think 'standby' and 'primary' are reversed in the above suggestion. This should work. -device virtio-net,primary=<device_id_of_vfio_device>,id=<device_id_of_virtio_net_device> -vfio #address,id=<device_id_of_vfio_device>,standby=<device_id_of_virtio_net_device> It should be OK to have virtio-net in standby mode without an associated vfio primary device, but a vfio primary device should not allowed without a virtio-net standby device. Will it be possible to remove vfio device when virtio_net driver is unloaded in the VM? Thanks Sridhar
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