How can I tell whether or not a processor supports Nested Page Tables (AMD) or Extended Page Tables (Intel)?

Question

Apparently doing things is hard because neither CPU-Z nor Intel's site report whether or not this is supported, which seems strange to me.

So.. if I'm in a position where I can't just go to the laptop and install a virtualization package to check (e.g. the best I can do is run something from a USB key), how can I tell if a CPU has this feature?

score 3 · Answer 1 · answered May 22 '11 at 06:30

I'm aware this doesn't directly answer your question (it's not a test), but for Intel, Wikipedia says:

Intel states that the feature is available in all their Nehalem-based CPUs with virtualization support; namely in Core i7, Core i5, Core i3, Pentium G6950 and appropriate Xeons.

It is not available in Core 2-based and earlier Intel CPUs.

score 1 · Accepted Answer · answered Sep 17 '11 at 09:53

1

Supposedly CoreInfo can now check for second level address translation!

answered Sep 17 '11 at 09:53

user541686

23,629

score -1 · Answer 3 · edited May 29 '11 at 13:33

-1

I know that VirtualBox won't let you check the "Enable Nested Paging" for a virtual setting if it isn't supported. You may want to read this:

http://en.wikipedia.org/wiki/Nested_Page_Tables

edited May 29 '11 at 13:33

Gareth

19,080

answered May 22 '11 at 05:54

CenterOrbit

2,056

How can I tell whether or not a processor supports Nested Page Tables (AMD) or Extended Page Tables (Intel)?

3 Answers3