Looks like this has been fixed in Kernel 2.6.29-RC5:
commit 732553e567c2700ba5b9bccc6ec885c75779a94b
Author: Mark Langsdorf <mark.langsd...@amd.com>
Date: Tue Feb 3 17:46:43 2009 +0100
[CPUFREQ] powernow-k8: Get transition latency from ACPI _PSS table
At this time, the PowerNow! driver for K8 uses an experimentally
derived formula to calculate transition latency. The value it
provides is orders of magnitude too large on modern systems.
This patch replaces the formula with ACPI _PSS latency values
for more accuracy and better performance.
I've tested it on two 2nd generation Opteron systems, a 3rd
generation Operton system, and a Turion X2 without seeing any
stability problems.
Signed-off-by: Mark Langsdorf <mark.langsd...@amd.com>
Signed-off-by: Thomas Renninger <tr...@suse.de>
Signed-off-by: Dave Jones <da...@redhat.com>
--
Error on Boot: [Firmware Bug]:Powernow-k8: Your BIOS does not provide ACPI_PSS
objects in a way that Linux understands.
https://bugs.launchpad.net/bugs/331691
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