From mboxrd@z Thu Jan 1 00:00:00 1970 From: geaaru Subject: RE: Cpufreq on k8 with xen dom0 Date: Fri, 28 Sep 2007 16:45:31 +0200 Message-ID: <1190990731.6914.1.camel@localhost> References: <1190726705.9986.18.camel@localhost> <1449F58C868D8D4E9C72945771150BDF0207701C@SAUSEXMB1.amd.com> <87tzpg63p0.fsf@informatik.uni-tuebingen.de> <1449F58C868D8D4E9C72945771150BDF0207702E@SAUSEXMB1.amd.com> <1190975833.6909.2.camel@localhost> <1449F58C868D8D4E9C72945771150BDF02077034@SAUSEXMB1.amd.com> Reply-To: geaaru@gmail.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1449F58C868D8D4E9C72945771150BDF02077034@SAUSEXMB1.amd.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Langsdorf, Mark" Cc: Xen-Devel ML , Goswin von Brederlow , Bhavana Nagendra List-Id: xen-devel@lists.xenproject.org My current kernel version 2.6.22 (as previous versions 2.6.21, 2.6.20) native works fine. Probably, there is a difference (as you said me) between Xen ACPI Interpreter and the native mode interpreter. I try also with xen-source-2.6.18 tree without xen support and in this case, cpufreq works fine. Only if i enable xen cpufreq doesn't work. On Fri, 2007-09-28 at 07:44 -0500, Langsdorf, Mark wrote: > > Hi, i try to use xen-unstable.hg version but doesn't work. > > > > >From dmesg i have this error: > > > > powernow-k8: Found 1 AMD Turion(tm) 64 Mobile Technology ML-30 > > processors (version 2.00.00) > > powernow-k8: BIOS error - no PSB or ACPI _PSS objects > > ACPI: (supports S0 S3 S4 S5) > > > > While, if i try to call cpufreq-info i have this output: > > > > cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006 > > Report errors and bugs to linux@brodo.de, please. > > analyzing CPU 0: > > no or unknown cpufreq driver is active on this CPU > > > > any idea how can i resolve this problem? > > dom0 isn't seeing the ACPI _PSS objects (I thought the > error message made that clear). No ACPI objects means > no information on the pstates. > > Do you get PowerNow! support on a native version 2.6.21+ > kernel? If not, you need to update your BIOS to something > that supports pstates (or possibly you have one of the > rare Turions that doesn't support more than 1 pstate, > but I doubt that). > > If 2.6.21+ native works, check to see if 2.6.18 native > works. If it doesn't, then there was a change to the > ACPI interpreter to support your laptop that will need > to be backported. If 2.6.18 native works, then there's > a difference between the Xen ACPI interpreter and the > native mode interpreter that will need to be ported to > Xen. > > -Mark Langsdorf > Operating System Research Center > AMD >