On Wed, 5 Jun 2002, Dave Jones wrote:
> > while reading through powernow-k6.c in 2.4.19-pre10-ac1 I found the
> > following that seems to be a bug:
> >
> > static unsigned long cpu_khz=350000;
> >
> > Not every K6-2/3 runs at 350 MHz...
>
> iirc, there aren't any MSRs[*] on the K6-2 where we can read
> the current FSB. I think 350MHz was used as it was probably
> the slowest K6-2 to be found at the time. You can override
> it with boot time arguments.
Really? From reading the code I have the impression that cpu_khz holds
more or less the information a "cat /proc/cpuinfo | grep MHz" gives for a
CPU at it's "normal" speed. The only place where cpu_khz is used is in
busfreq = cpu_khz / get_cpu_multiplier() / 1000;
and this gives IMHO a wrong result if the "normal" speed of your CPU is
different from 350 MHz.
> Dave.
cu
Adrian
BTW: 350MHz was never the slowest K6-2, there are K6-2 @ 300 MHz.
--You only think this is a free country. Like the US the UK spends a lot of time explaining its a free country because its a police state. Alan Cox
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This archive was generated by hypermail 2b29 : Fri Jun 07 2002 - 22:00:23 EST