Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far

Arjan van de Ven
2007-03-20T09:17:31Z

On Tue, 2007-03-20 at 01:36 -0400, Eric St-Laurent wrote:
> On Tue, 2007-20-03 at 01:04 -0400, Lee Revell wrote:
>
> > I think CONFIG_TRY_TO_DISABLE_SMI would be excellent for debugging,
> > not to mention people trying to spec out hardware for RT
> > applications...
>
> There is a SMI disabling module in RTAI, check the smi-module.c in this:
>
> https://www.rtai.org/RTAI/rtai-3.5.tar.bz2
>
> More infos:
>
> http://www.captain.at/rtai-smi-high-latency.php
> http://www.captain.at/xenomai-smi-high-latency.php
>
> It might make sense to merge this code, at least in the -rt tree.

it NEVER makes sense to disable SMM.

SMM is there to ensure that your hardware doesn't get physically
damaged.

disabling that is a BAD idea. I'm no fan of SMM myself, but it's there,
and we have to live with it. Disabling it without knowing what it does
on your system is madness.

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