Kernel: 2.6.17-1.2157_FC5xen0 #1 SMP CPU: cpu family : 15 model : 43 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ Log shows a lot of: Aug 26 11:52:27 sikozu kernel: powernow-k8: fid trans failed, fid 0x2, curr 0xe Aug 26 11:52:27 sikozu kernel: powernow-k8: transition frequency failed Seems to be the problem described in http://article.gmane.org/gmane.comp.emulators.xen.devel/22282 http://article.gmane.org/gmane.comp.emulators.xen.devel/22282
For the time being, we've disabled cpu frequency scaling support on xen kernels, since it needs a lot of love from the hypervisor side. *** This bug has been marked as a duplicate of 204047 ***