Re: [RT] [RFC] simple SMI detector

Lee Revell
2009-01-24T02:33:38Z

On Fri, Jan 23, 2009 at 5:55 PM, Jon Masters <jcm@redhat.com> wrote:
> Here's a simple SMI detector we've been playing around with internally.
> In case anyone wants to play with it, and especially help clean it up :)
>
> SMI events are particularly unhelpful on Real Time systems because we
> effectively have the CPU stolen from under us. We can't prevent this
> easily without BIOS vendors/system vendor co-operation, but we can help
> to diagnose and log that these are occuring...which can be very helpful
> too.
>

FYI the RTAI project has a patch to allow disabling of SMI:

https://listas.upv.es/pipermail/rtlinuxgpl/2007-April/000609.html

Lee