Michael> Actually saw some mail on lkml the other day about a 64
Michael> bit system where memory is fragmented - PCI at 0 and
Michael> actual memory near -1. Anyway, Tavor is likely not only
Michael> device with restrictions on maximum region size?
Right, that's why there's pci_set_dma_mask() etc.
Michael> Are you saying consumer shall play with IOMMU? But then
Michael> PCI addresses of memory will change each time consumer
Michael> does this and you wont be able to use your default
Michael> region?
Not "play with IOMMU" but use pci_map_single() etc. The PCI address
may change but as long as it is in the low 0xffffffffffffffff part of
memory we're fine.
- Roland
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