[LinuxBIOS] AMD Geode LX support for LinuxBIOS
c-d.hailfinger.devel.2006 at gmx.net
Thu May 3 19:24:03 CEST 2007
On 03.05.2007 19:17, Stefan Reinauer wrote:
> * Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net> [070503 19:16]:
>> The concept of code not under the control of the operating system is
>> frightening some low-latency audio/video folks. If the operating system
>> uses some operations heavily which trigger SMM execution, extended
>> periods of switched off interrupts may result.
> Yes, anyone doing real time systems has a problem with this.
>> OTOH, systems which need SMM should probably not be used anyway if
>> latency is critical.
> They can not. This is the reason a lot of people are using LinuxBIOS
> rather than legacy bios.
How do we deal with fan control, then? Most recent mainboards use
SMM for fan control. Once you forbid SMM, you have to trust the OS
to perform fan control correctly, which will fail if the machine
crashes or locks up.
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