Re: Lost Ticks on x86_64

Tim Hockin
2005-08-08T16:48:01Z

On Mon, Aug 08, 2005 at 02:01:25PM +0200, Andi Kleen wrote:
> > Some BIOSes do not lock SMM, and you *could* turn it off at the chipset
> > level.
>
> Doing so would be wasteful though. Both AMD and Intel CPUs need SMM code
> for the deeper C* sleep states.

Really? I'm not too familiar with the deeper C states - what role does
SMM play?