What exactly is VT-x2?

[Mike2]

Hello,

I newly saw the term VT-x2 in these and other forums on the web. However, it is very hard to actually find out what this is (except that it should be a followup to VT-x, which is kind of obvious). Currently I just know that it should be a set of technologies, and the EPT is included in VT-x2. What else does VT-x2 cover? Is it an "official" Intel (marketing?) term, or is it just an informal name someone came up with? Since the Intel website says nothing about VT-x2, the latter looks more likely, but it's possible that it's going to be official, just isn't there yet...

Thanks for any reponses!


Mike

[David_O_Intel1]

VT-x2 is not an official marketing term. Youcan think of it simplyas VT-x extensions or enhancements, includingFlexMigration, FlexPriority, EPT, and VPID.All are explained on the Intel web site. These features are available on Intel Core i7 processors.


David Ott

[Mike2]

Thank you, David! Of all these technologies, only EPT is of interest for me, but I wanted to know what VT-x2 is all about.

Frankly, I find the term VT-x2 a bit confusing, because VT-x refers to the CPU virtualization extensions for x86, so VT-x2 would suggest a followup to those extensions, and not further technologies that "somehow" relate to virtualization as well. If at all, then EPT is some kind of VT-x enhancement, but it's got a separate name and is insteal included as part of VT-x2 together with other, even less related things...

Anyway, thanks for the clarification.


Mike