From mboxrd@z Thu Jan  1 00:00:00 1970
From: Juergen Gross <jgross@suse.com>
Subject: PCI-passthrough for 32 bit guests and high MMIO
	addresses
Date: Fri, 21 Nov 2014 15:39:02 +0100
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Hi,

again a fallout from my "linear p2m list" tests:

Trying to do PCI-passthrough with a 32-bit pv-domain I passed the
wrong device to the domain. The MMIO address was too large for a
MFN of a 32-bit system (it was 380003200000-3800036fffff).

Instead of rejecting the operation Xen tried to perform it resulting
in a (quite understandable) failure in the domU.

I think either the hypervisor or the tools should refuse to do
PCI-passthrough in this case.


Juergen