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An Introduction to Full Virtualization With Xen (Linux.com)An Introduction to Full Virtualization With Xen (Linux.com)Posted Oct 24, 2012 14:47 UTC (Wed) by ibukanov (subscriber, #3942)In reply to: An Introduction to Full Virtualization With Xen (Linux.com) by cyanit Parent article: An Introduction to Full Virtualization With Xen (Linux.com)
In addition to already mentioned reasons to use XEN, it also takes advantage of IOMMU hardware and can run, for example, a guest OS against the real networking hardware. Besides performance improvements it allows to isolate a bug in a network driver or even in TCP implementation from the rest of the system.
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An Introduction to Full Virtualization With Xen (Linux.com) Posted Oct 24, 2012 15:11 UTC (Wed) by aliguori (subscriber, #30636) [Link]
KVM also has IOMMU support FWIW.
In fact, it was recently completely rewritten as a generalized Linux feature (VFIO) that could also be used to write userspace device drivers protected by an IOMMU.
There was even an LWN article: http://lwn.net/Articles/474088/
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