Does nova really need to limit number of pcie port to 28?

[zhou zhong]

Dear all, sorry for this confusion:

By my test, an instance attaches interface/disk over than the max config num_pcie_ports in arm, from [1], I know that the max of that config num_pcie_ports=28 is limited by QEMU, however, the number of PCIs attached on my instance has far exceeded this limit.

Does nova limitation num_pcie_ports=28 need to update to a larger number? Could anyone give me some advice?

[1] https://github.com/openstack/nova/blob/c199becf52267ba37c5191f6f82e29bb5232b607/nova/conf/libvirt.py#L809

My Openstack Version: W
Libvirt Version: 8.0.0
Qemu Version: 6.2.0