[ale] ACPI and Processors

[ale at jeffx.com]

This is slightly off topic but has a little to do with LINUX.  I have been 
tasked with looking into the power management features in server systems.  I 
have read on ACPI from acpi.info and also information on the AMD MP Model 6 
Processor.  The AMD processor supports ACPI 1.0b and 2.0.  ACPI provides an 
interface for operating systems.  LINUX has limited ACPI support.  

My question is:  Do processors automatically use power management without using 
ACPI?  Does it automagically go from Halt State from working state?

THe ACPI specification has a lot of information but can't find anything about 
this.  And the AMD spec talks about it a lot but I am confussed if it needs 
ACPI support in the BIOS?  

Regards,
J


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