[NOVA] - Instances got stuck at boot with PCI passthrough mechanism enabled

Hello all! Our new env uses Zuul and nodepool for managing vms on which will be executed devstack and tempest. Those VMS are hosted on an openstack cloud with nodepool spinning them up every time a CI job is triggered. This is something very common in OpenStack end users but can be challenging for our powermax product line as it requires HBA which are seen by the host not the guest. We have followed documentation to set it up and I confirm the HBAs are visible to the instances but unfortunately once those cards are seen the instance get stuck at the boot process just like they were waiting for something. Any advice would be highly appreciated. Thank you.