Hi Oleksandr,
On 10/16/19 11:08 AM, Oleksandr Tyshchenko wrote:
From: Oleksandr Tyshchenko <[email protected]>
We always skip the IOMMU device when creating DT for hwdom if there is
an appropriate driver for it in Xen (device_get_class(iommu_node)
returns DEVICE_IOMMU). So, even if it is not used by Xen it will be skipped.
We should also skip the IOMMU specific properties of the master device
behind that IOMMU in order to avoid exposing an half complete IOMMU
bindings to hwdom.
According to the Linux's docs:
1. Documentation/devicetree/bindings/iommu/iommu.txt
2. Documentation/devicetree/bindings/pci/pci-iommu.txt
Signed-off-by: Oleksandr Tyshchenko <[email protected]>
Acked-by: Julien Grall <[email protected]>
@Juergen: while the driver relying on those bindings is experimental for
Xen 4.13, it would be good to avoid exposing half the bindings of IOMMU.
The bindings are generic but it is not used by the SMMU driver yet and
therefore should not affect platform using SMMUs.
Cheers,
--
Julien Grall
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