1.2 Xen Improvements

Several improvements have been incorporated into the Unbreakable Enterprise Kernel to support Xen usage:

  • Numerous bug fixes and performance improvements.

  • Optimizations for xen/privcmd for ARM and PVH by a new hypercall (add_to_physmap_range).

  • Support for the balloon driver in Xen ARM.

  • Enhancements to permit PVHVM backend drivers and allow dom0 functionality to be moved to guests.

  • Implementation of the persistent grant extension to the block ring protocol to improve block protocol scalability for large numbers of physical cores and guests.

  • Xen Processor Aggregator Device (PAD) added.

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