cvs commit: src/sys/i386/cpufreq est.c

Renato Botelho rbgarga at
Mon Aug 25 19:27:45 UTC 2008

On Mon, Aug 25, 2008 at 10:29 AM, Renato Botelho <rbgarga at> wrote:

> On Sat, Aug 23, 2008 at 9:53 AM, John Baldwin <jhb at> wrote:
>> jhb         2008-08-23 12:53:42 UTC
>>  FreeBSD src repository
>>  Modified files:
>>    sys/i386/cpufreq     est.c
>>  Log:
>>  SVN rev 182048 on 2008-08-23 12:53:42Z by jhb
>>  If we are unable to obtain a frequency list from either ACPI or the
>> static
>>  tables, then attempt to build a simple list containing just the high and
>>  low frequencies based on the current CPU frequency calculated during boot
>>  and the contents of the MSR.
> Seems it has broken something, after upgrade my -current i386 today I got a
> kernel trap 18 after est0 say cannot calculate the frequency and set it to
> 200Mhz
> This kernel was not built with debugs since it's my desktop, but i can do
> if you
> want.
> Let me know what kind of information you need from my system and my hw.

Some of lines i can see at boot panic

cpu0: <ACPI CPU> on acpi0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est0: Guessed bus clock (high) of 200 MHz

Fatal trap 18: integer divide fault while in kernel mode
cpuid = 0; acpi id = 00
panic: integer divide fault

Maybe it can help.

Renato Botelho

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