Re: [PATCH v2 2/2] PCI: OF: Support external-facing property

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On Tue, Apr 02, 2019 at 02:15:48PM +0100, Jean-Philippe Brucker wrote:
> Set the "untrusted" attribute to any PCIe port that has an
> "external-facing" device tree property. Any device downstream of this
> port will inherit the attribute and have only the strictest IOMMU
> protection.
> 
> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@xxxxxxx>

Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

Rob, you can take both of these, or ack the first and I'll take them.

> ---
>  drivers/pci/of.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/pci/of.c b/drivers/pci/of.c
> index 3d32da15c215..3e7ac7748d90 100644
> --- a/drivers/pci/of.c
> +++ b/drivers/pci/of.c
> @@ -35,6 +35,9 @@ void pci_set_bus_of_node(struct pci_bus *bus)
>  		bus->dev.of_node = pcibios_get_phb_of_node(bus);
>  	else
>  		bus->dev.of_node = of_node_get(bus->self->dev.of_node);
> +
> +	if (of_get_property(bus->dev.of_node, "external-facing", NULL))
> +		bus->self->untrusted = true;
>  }
>  
>  void pci_release_bus_of_node(struct pci_bus *bus)
> -- 
> 2.21.0
> 
> 
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