Re: [BISECTED] Lots of "rescheduling IPIs" in powertop

Andi Kleen
2008-05-14T11:43:17Z

Andreas Herrmann <andreas.herrmann3@amd.com> writes:
>
> It depends on the CPU. For AMD CPUs that support MWAIT this is wrong.
> Family 0x10 and 0x11 CPUs will enter C1 on HLT. Powersavings then
^ not

> It might be best to switch off the mwait flag for these AMD CPU
> families like it was introduced with commit
> f039b754714a422959027cb18bb33760eb8153f0 (x86: Don't use MWAIT on AMD
> Family 10)

Then you have to special case everything again. We still need to
work out if the P4 is even correct here or not, but if it's not
i would rather quirk the cpuid reporting on it.

-Andi