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[Xen-devel] Memory Mapped IO devices in a domU
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| Subject: | [Xen-devel] Memory Mapped IO devices in a domU |
| From: | Matthew Fioravante <matthew.fioravante@xxxxxxxxxx> |
| Date: | Fri, 10 Dec 2010 11:17:00 -0500 |
| Delivery-date: | Fri, 10 Dec 2010 08:18:03 -0800 |
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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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