[vfio-users] ACS and IOMMU groups on Skylake/Sunrise

[Philip Kania]

I'm trying to setup vfio-pci for a kvm guest. I am running
4.13.0-38-generic. I have a I350 NIC chipset and i7-6700K CPU.
drivers/pci/quirks.c for my kernel version\

 appears to have support for the I350 and the Skylake/Sunrise Point PCIe
ACS register issues.


dmesg shows DMAR: Intel(R) Virtualization Technology for Directed I/O


and lspci shows the virtual function(s) on my NIC, but all the VF and PF
along with PCI bridges all appear in the same group.


IOMMU Group 6 00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H
PCI Express Root Port #3 [8086:a112] (rev f1)

IOMMU Group 6 00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-H
PCI Express Root Port #5 [8086:a114] (rev f1)

IOMMU Group 6 07:00.0 PCI bridge [0604]: ASMedia Technology Inc.
ASM1083/1085 PCIe to PCI Bridge [1b21:1080] (rev 04)

IOMMU Group 6 09:00.0 Ethernet controller [0200]: Intel Corporation I350
Gigabit Network Connection [8086:1521] (rev 01)

IOMMU Group 6 09:00.1 Ethernet controller [0200]: Intel Corporation I350
Gigabit Network Connection [8086:1521] (rev 01)

IOMMU Group 6 09:10.0 Ethernet controller [0200]: Intel Corporation I350
Ethernet Controller Virtual Function [8086:1520] (rev 01)


I expected that, with the quirks, by VF would appear in its own group. Any
idea what I'm missing?
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