On Mon, Jan 25, 2021 at 2:57 AM Parav Pandit [off-list ref] wrote:

quoted

Apologies for the tardy question out of left field, but I've been
thinking about this some more. If I recall, the primary motivation for
this was a means to effectively address more VFs? But, why can't the
device simply expose more bus numbers?

Several weeks back, Jason already answered this VF scaling question from you at discussion [1].

[1] https://lore.kernel.org/netdev/20201216023928.GG552508@nvidia.com/ (local)

True, although I didn't really consider the full cost argument at the
time because the core answer was "They can't", however, the fact is,
PCI can.

Regards,
Edwin Peer