[vfio-users] IOMMU Group with PCI Bridge and 10gbe nic

[Allen Dial]

Hi VFIO-Users,

I have 2 of 3 2 port NICs that I would like to passthrough to guest vms but am not sure how best to go about it as 1, they get divided up (not the biggest issue other than I don't know how I will tell which one is which physically out the back of the machine) but more importantly they each get grouped with pci bridges in their iommu groups.

Is it possible to pass 4 of the interfaces to vms and keep 2 of them for the host?

Below is some hopefully helpful information from the terminal:

group 39
/sys/kernel/iommu_groups/39/devices/0000:42:02.0
42:02.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/39/devices/0000:43:00.0
43:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)

group 40
/sys/kernel/iommu_groups/40/devices/0000:42:04.0
42:04.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/40/devices/0000:44:00.0
44:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)

group 42
/sys/kernel/iommu_groups/42/devices/0000:47:02.0
47:02.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/42/devices/0000:48:00.0
48:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)

group 43
/sys/kernel/iommu_groups/43/devices/0000:47:04.0
47:04.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/43/devices/0000:49:00.0
49:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)

group 45
/sys/kernel/iommu_groups/45/devices/0000:4b:02.0
4b:02.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/45/devices/0000:4c:00.0
4c:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)

group 46
/sys/kernel/iommu_groups/46/devices/0000:4b:04.0
4b:04.0 PCI bridge: Integrated Device Technology, Inc. [IDT] PES24T3G2 PCI Express Gen2 Switch (rev 02)
/sys/kernel/iommu_groups/46/devices/0000:4d:00.0
4d:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (rev 01)
Thank you,

Allen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/vfio-users/attachments/20170914/74519048/attachment.htm>