From: Stephen Hemminger
Date: Wed, 29 Aug 2018 09:24:51 -0700
> + spin_lock_irqsave(>device_list_lock, flags);
> + list_for_each_entry(hpdev, >children, list_entry) {
> + if (hpdev->pci_slot)
> + continue;
> +
> + slot_nr =
The Hyper-V host API for PCI provides a unique "serial number" which
can be used as basis for sysfs PCI slot table. This can be useful
for cases where userspace wants to find the PCI device based on
serial number.
When an SR-IOV NIC is added, the host sends an attach message
with serial number.
