http://bugzilla.kernel.org/show_bug.cgi?id=11541
------- Comment #74 from tr...@suse.de 2009-03-03 04:47 ------- > I think, the powernow-k8 driver should determine the frequency from the Pstate > MSR directly and not from this ACPI table. Hmm, I'd vote to keep taking the ACPI values. If the value is wrong you have a BIOS "bug". One of the basic ideas of ACPI is to stay HW independent. Intel and AMD HW of the last years are both using the same code which is good. You end up checking for several CPUIDs implementing different ways to obtain the values in some years. On the other hand side the PowerNow! Windows driver seem to read the MSR to get the info (which is really bad!), so it's likely we see more broken BIOSes in this area. Hmm, we recently enhanced the powernow-k8 driver to take latency values from ACPI tables (exactly the same table) and Mark confirmed that the Windows driver is doing the same. I somehow cannot believe they don't trust the one value(s), but take the others. It would be great if you (maybe Mark knows details) could find out why Windows does not show the ACPI value. If it's reasonable we could make the change, but just do it because Windows shows other values sounds a bit hasty (maybe this is just a simple monitor tool not able to access ACPI tables not the Windows PowerNow! driver?). -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
