IOMMU can be considered similar to the AGP GART, which is similar,
remapping the Addresses, as far as i understand.
Though you get a physical to virtual translation, what about interrupts,
yet to be seen with how to do it with multipath scenarios.
Something that i happened to read
https://www.gelato.unsw.edu.au/archives/comp-arch/2007-March/007370.html
Even Documentation/Intel-IOMMU.txt, doesn't seem to paint a very rosy
picture
Manu
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