c1/c1e/c3/c6/c7 on linux

Erik Slagter
2009-11-22T11:46:12Z

Ik have two machines, a dell laptop with a mobile core2duo T9300 and a
gigabyte desktop with a core i7 920. Both advertise all of these
C-states c1/c1e/c3/c6/c7 in the specs (although the core2duo doesn't
have c7 I believe).

It's not clear at all how linux handles these. The kernel on the T9300
says it uesde C1/C2/C3 of "type" C1/C2/C3, the core i7 says exactly the
same.

Is this a WiP? A bios issue? It looks like I am missing some states?

The kernel I am using is 2.6.31.6