The IOMMU page size is not always stored in struct iommu on Power.
Specifically if a device is configured for DDW (Dynamic DMA Windows aka.
64-bit direct DMA), the used TCE (Translation Control Entry) size is
stored in a special device property created at run-time by the DDW
configuration code.
The IOMMU page size is not always stored in struct iommu on Power.
Specifically if a device is configured for DDW (Dynamic DMA Windows aka.
64-bit direct DMA), the used TCE (Translation Control Entry) size is
stored in a special device property created at run-time by the DDW
configuration code.
2 matches
Mail list logo