[PATCH v2 0/2] PCI: Describe external-facing ports in device tree

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Since v1 [1], I improved the wording of patch 1/2 as suggested by Bjorn.

Add an "external-facing" property to PCI ports in device-tree, to help
identify untrusted devices. The notion of untrusted PCI devices was
added to the v5.0 kernel to describe devices that should have strict
IOMMU protection [2], for example devices that are plugged in a
Thunderbolt port. ACPI systems use the ExternalFacingPort property [3].
Add an equivalent mechanism to device tree.

[1] https://lore.kernel.org/linux-pci/20190318182124.53859-1-jean-philippe.brucker@xxxxxxx/
[2] https://lkml.org/lkml/2018/11/26/631
[3] https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports

Jean-Philippe Brucker (2):
  dt-bindings: Add external-facing PCIe port property
  PCI: OF: Support external-facing property

 Documentation/devicetree/bindings/pci/pci.txt | 50 +++++++++++++++++++
 drivers/pci/of.c                              |  3 ++
 2 files changed, 53 insertions(+)

-- 
2.21.0




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