On Mon, Nov 04, 2024 at 10:44:23AM +0100, Niklas Schnelle wrote: > > One more question though, what would happen with this reset for a bus > with an SR-IOV device with more than 256 VFs i.e. where > pci_iov_virtfn_bus() returns anything other than 0. I'm guessing since > VFs are physically still controlled by the bridge all VFs would be > reset but at the same time virtfn_add_bus() sets the bridge device for > the added bus as NULL so I think it might look odd in sysfs, sadly I > don't have such a device to test with. Still, this might actually be an > argument for having the attribute on the bridge. I assume everything is reset at the PCI level. Are you asking what the kernel does? I don't think it does anything special with SR-IOV functions. Those pci_dev's aren't attached to the bridge pci_dev; you have to go through the pci_bus' children instead.
