[Xen-devel] Memory Mapped IO devices in a domU

[Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>]

 How would one pass a memory mapped device to a domU? In particular I'm 
trying to pass the TPM to a domU. It is a memory mapped device with 5 
pages starting at 0xfed40000.
Currently I'm playing with the memory_op hypercall, using 
XENMEN_add_to_phys but its failing and I'm currently investigating why. 
Is this even the right hypercall to use for this? How do I deal with the 
fact that the device is already mapped into dom0 by default? Do I need 
to explicitly unmap the pages from dom0 first somehow?
Thanks!

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