Bug#704574: KVM device assignment may result in panic

[Ben Hutchings <ben@decadent.org.uk>]

Package: src:linux-2.6
Version: 2.6.32-48squeeze1
Severity: important
Tags: upstream fixed-upstream patch

I'm trying to test backports of some security fixes releated to KVM
device assignment, not having tried to use this feature in squeeze.

Every time I try to assign a device using virt-manager, the kernel
panics - even with a kernel version before any of the backported fixes
in this area (2.6.32-41).

This appears to be the same bug as:

https://bugzilla.redhat.com/show_bug.cgi?id=705441

For which the fix was apparently:

commit 7b668357810ecb5fdda4418689d50f5d95aea6a8
Author: Alex Williamson <alex.williamson@redhat.com>
Date:   Tue May 24 12:02:41 2011 +0100

    intel-iommu: Flush unmaps at domain_exit

This can be cleanly cherry-picked onto squeeze.

Ben.

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