Passthrough of onboard SATA controller on AMD B550/X570

[AnK]

Hi,

in my current setup on Intel C236 chipset with Xeon CPU I do a PCI passthrough of the on-board SATA controller to a TrueNAS VM, which works really great.

I think about to replace the system with AMD hardare (Ryzen Pro with B550/X570) but I had read, that it maybe not possible to passthrough the integraded SATA controller to a VM with the AMD chipset, because of IOMMU groups and so on.

Have anyone running a similar setup?
Maybe with a ASUS ROG Strix B550-F Gaming or ASRock x570 pro4 mainboard?

Thanks

 

[leesteken]

Except for the X570 (and X570S), all motherboard SATA controllers are part of the big Ryzen chipset IOMMU group, which prevents passthrough (unless you use the pcie_acs_override and forgo VM security isolation). I upgraded from an ASRock X470 to a GigaByte X570S and the groups are so much better (and I can choose the boot GPU in the BIOS from any PCIe slot).

 

[AnK]

OK, what is the name of your board and is it capable to pass the SATA controller/ports through to a VM?

 

[leesteken]

OK, what is the name of your board and is it capable to pass the SATA controller/ports through to a VM?

They are in a separate IOMMU group but I don't know if they reset properly and I can't test because I need them for the Proxmox host, sorry. There have been reports of SATA controllers that didn't work inside VMs on this forum.