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The wikipedia page says Xen has HW virtualization for Intel and AMD CPU's.

Q: Does Xen supports HW virtualization on Power architecture?

ps.: regarding: http://www.zdnet.com/ibm-and-linux-the-next-billion-dollars-7000020757/

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wiki.xen.org/wiki/… – Mat Sep 19 '13 at 15:44
can you please post this as an answer? – gasko peter Sep 20 '13 at 18:57

No, Xen does not support Power architecture. Quoting http://wiki.xen.org/wiki/Xen_FAQ_Compatibility#Which_architectures_does_Xen_Project_support.3F

Xen Project currently runs on the x86, x86_64 and ARM architectures. As of Xen 4.3 Xen requires at least x86 64-bit for the hypervisor. Xen used to be supported on IA64 (Itanium) but that support was dropped as of Xen 4.2 and Linux v3.14. On x86 Xen Project requires a "P6" or newer processor (that's any Intel or AMD x86 CPU purchased in the last seven years). Multiprocessor and multicore machines are supported, including support for Hyper-Threading (SMT). Support for x86/64 is available since Xen 3.0. We hope to add other architectures such as PPC.

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