On Wed, Nov 18, 2009 at 3:19 PM, Harald Dunkel <[email protected]> wrote: > Hi folks, > > If I migrate a virtual machine (2.6.31.6, amd64) from a host with > AMD cpu to an Intel host, then the guest is terminated on the old > host as expected, but it gets stuck on the new host. Every 60 seconds > it prints a message on the virtual console saying > > BUG: soft lockup - CPU#0 got stuck for 61s! Quite possible that the guest could not be scheduled to run for a longer time during migration. In such a case the Linux kernel will find that the cpu was stuck/locked and hence throw the call trace. These messages are not harmful(is not it?) and the guest keeps running without any problem.
> > If I reset the guest, then it boots (without problems, as it seems). > > There is no migration problem for AMD --> AMD and Intel --> AMD. > I didn't had a chance to test Intel --> Intel yet. > > The virtual disk is on a common NFSv3 partition. All hosts are > running 2.6.31.6 (amd64). > > Can anybody reproduce this? I saw the error message several times on > Google, but not together with a migration from AMD to Intel. > > Any helpful comment would be highly appreciated. > > > Regards > > Harri > =================================================================== > processor : 0 > vendor_id : AuthenticAMD > cpu family : 15 > model : 67 > model name : Dual-Core AMD Opteron(tm) Processor 1210 > stepping : 2 > cpu MHz : 1795.378 > cache size : 1024 KB > physical id : 0 > siblings : 2 > core id : 0 > cpu cores : 2 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp > lm 3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm > extapic cr8_legacy > bogomips : 3590.75 > TLB size : 1024 4K pages > clflush size : 64 > cache_alignment : 64 > address sizes : 40 bits physical, 48 bits virtual > power management: ts fid vid ttp tm stc > : > : > > > > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 23 > model name : Intel(R) Xeon(R) CPU E5420 @ 2.50GHz > stepping : 10 > cpu MHz : 2500.605 > cache size : 6144 KB > physical id : 0 > siblings : 4 > core id : 0 > cpu cores : 4 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 13 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm > constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl vmx est > tm2 ssse3 cx16 xtpr pdcm dca sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority > bogomips : 5001.21 > clflush size : 64 > cache_alignment : 64 > address sizes : 38 bits physical, 48 bits virtual > power management: > : > : > > > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Sudhir Kumar -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
