Messages in this thread | | | Subject | Re: [PATCH 5/6] vdpa: introduce virtio pci driver | From | Jason Wang <> | Date | Mon, 8 Jun 2020 18:07:36 +0800 |
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On 2020/6/8 下午5:54, Michael S. Tsirkin wrote: > On Mon, Jun 08, 2020 at 05:46:52PM +0800, Jason Wang wrote: >> On 2020/6/8 下午5:45, Michael S. Tsirkin wrote: >>> On Mon, Jun 08, 2020 at 05:43:58PM +0800, Jason Wang wrote: >>>>>> Looking at >>>>>> pci_match_one_device() it checks both subvendor and subdevice there. >>>>>> >>>>>> Thanks >>>>> But IIUC there is no guarantee that driver with a specific subvendor >>>>> matches in presence of a generic one. >>>>> So either IFC or virtio pci can win, whichever binds first. >>>> I'm not sure I get there. But I try manually bind IFCVF to qemu's >>>> virtio-net-pci, and it fails. >>>> >>>> Thanks >>> Right but the reverse can happen: virtio-net can bind to IFCVF first. >> >> That's kind of expected. The PF is expected to be bound to virtio-pci to >> create VF via sysfs. >> >> Thanks >> >> >> > Once VFs are created, don't we want IFCVF to bind rather than > virtio-pci?
Yes, but for PF we need virtio-pci.
Thanks
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