Hi all,

I just posted a module to cut down on the energy bill for people with
dual Athlon systems, well currently only tested on Tyan S2460, which is
based on AMD-760MP chipset.

Amd-smp-idle enables the power savings mode like VCool and LVCool, but
amd-smp-idle uses the Linux PCI features, and supports currently SMP
only. So far I've squeezed out maximum 90 Watt power savings out of my
system :)

Adding support for other chipsets, and maybe merging the LVCool
functionality should be easy. Hopefully the core functionality will
eventually make it to the ACPI to provide C2 support.

Please note that there's a bug where loading the module for the first
time after rebooting causes the system to go sleep mode instead of
the idle mode. To wake up the system, just hit the power button once.
So, don't try this out on a remote server :)

The code is following, or you can also download it from:

http://www.muru.com/linux/amd-smp-idle/

Cheers,

Tony