Gilles Chanteperdrix wrote:
> Richard Cochran wrote:
>> As an x86 dummy, I have a question about XENO_HW_SMI_WORKAROUND and
>> XENO_HW_SMI_ALL. I remember from the 2009 RTLW, that Thomas Gleixner
>> said not to disable SMIs or it might melt my cpu.
>>
>> Is there any risk in enabling the Xenomai options?
>
> Some people seem to have used it without any problem. The problem
> happens if SMIs are used for regulating the cpu fans speed. So far, I
> have not seen PCs which do this, but who knows?
>
> You can run a stress test, measuring the CPU temperature, with and
> without the SMIs disabled. This way, if the SMIs are involved in
> regulating the cpu fan speed, you will know it, and in this case, yes,
> you can not disable them.
>
> Note however that the Intel chipsets allow to prevent you from disabling
> the SMIs. So, it would be plain silly if your PC manufacturer used the
> SMI for regulating the cpu fan speed, and did not prevent you from
> disabling them.
Also note that the chipset allows you to disable the SMI sources
selectively, so, if the cpu fan speed regulation is a fast SMI, you can
disable the others, and keep that one.
So, there are several things to try before giving up on SMIs.
--
Gilles.
_______________________________________________
Xenomai-help mailing list
Xenomai-help@gna.org
https://mail.gna.org/listinfo/xenomai-help
