[stable 9] broken hwpstate calls
Yamagi Burmeister
lists at yamagi.org
Sat May 26 07:02:39 UTC 2012
On Fri, 25 May 2012 16:05:56 -0400
Jung-uk Kim <jkim at FreeBSD.org> wrote:
> > if we decide so, then I think that we could still keep the things
> > "simple". As we currently use the "wholesale" approach (all CPUs
> > are set to the same P-state regardless of topology), then we could
> > first make a pass of writing the MSR on all processors with a new
> > P-state value and then make another pass of checking via MSR
> > C001_0063 that the P-state is acquired.
>
> No, I believe checking MSRC001_0071[18:16] is much simpler if it
> works. And it does not break current cpufreq(4) design principles.
Okay, thank's for your input. I'll come up with a patch. But it won't
happen until tuesday or wednesday next week.
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