IOMMU enabled not running?

[armaggeddon321]

I am trying to do a PCI passthrough of a USB hub im on TRUENAS CORE

My CPU has intel VT-x /Vt-D enabled
I have masked out the correct device, it shows up in the PCI device selector for VM's (2/0/0)

if I run

Code:

sysctl -a | grep iommu

i get:

Code:

hw.vmm.iommu.enable:1

hwvmm.iommu.initialized:0

checking dmesg does not return any hits for IOMMU

from the resources available, I can see that somewhere I need to enable something that is disabled, but I have no idea where that is.
I think I still need to Include a boot argument? But I was unable to find how to do that and where.
I have followed this link as closely as possible:

bhyve/pci_passthru - FreeBSD Wiki

specs:
cpu: intel core 13-10100 @3.6ghz
mb: MSI H410M-A PRO lga 1200
- using onboard Ethernet
memory: 32GB ddr4 non ECC
disks:
boot - kingston 256 Sata SSD A400
pools - WD red 2GB x3
PCI USB 4 port card I am trying to passthrough:
really long amazon name

 

[Kris Moore]

PCI passthrough on bhyve is going to be spotty at best. You'd be better off trying it on SCALE with KVM.