topic Re: Core i7 Processor description listing VT-x2 features in Software Archive

Core i7 Processor description listing VT-x2 features

aravindh — Thu, 20 Aug 2009 16:21:57 GMT

Is there a description listing that tells us the individual VT-x2 features (EPT, VPID, Unrestricted Guest etc) that the various Core i7 CPUs supprt? For example some Core i7 CPUs support EPT but not Unrestricted Guest. How can I determine this kind of information before buying the CPU?

Thanks,
Aravindh

Re: Core i7 Processor description listing VT-x2 features

David_O_Intel1 — Thu, 27 Aug 2009 16:29:42 GMT

Have been inquiring internally about this. Thanks for your patience.

David Ott

Re: Core i7 Processor description listing VT-x2 features

David_O_Intel1 — Fri, 11 Sep 2009 23:10:47 GMT

Difficult request. I've talked to several internal divisions by now but a comparative guide with that kind of detail is hard to come by, in part because the same product can have different OEM arrangements and levels of feature support.

Would be much easier to ask a specific question about a specific product. Do you have one in mind?

David Ott

Re: Core i7 Processor description listing VT-x2 features

aravindh — Mon, 14 Sep 2009 14:53:57 GMT

Quoting - David Ott (Intel)

Does any spin of the Nehalams have the Unrestricted Guest feature? Which processors will include this feature in the future?

Thanks,
Aravindh

Re: Core i7 Processor description listing VT-x2 features

David_O_Intel1 — Thu, 01 Oct 2009 00:26:44 GMT

No, it is not available on any Nehalem processors. Look for it, however, in upcoming server platform releases.

This feature is also known as "real-mode virtualization" and is described publically in the software development manuals at:

http://www.intel.com/products/processor/manuals/index.htm

Note the 2-volume System Programming Guide.

David Ott