Lots of Zhaoxin PCIe components have no ACS Capability Structure, but do have ACS-like capability which ensures DMA isolation. This patch makes isolated devices could be directly assigned to different VMs through IOMMU. LeoLiu-oc (3): PCI: Add Zhaoxin Vendor ID PCI: Add ACS quirk for Zhaoxin multi-function devices PCI: Add ACS quirk for Zhaoxin Root/Downstream Ports drivers/pci/quirks.c | 31 +++++++++++++++++++++++++++++++ include/linux/pci_ids.h | 2 ++ 2 files changed, 33 insertions(+) -- 2.20.1