I have a "BUG: soft lockup" after live migrating guest from host_1 to host_2 (when I migrate the guest from host_2 to host_1, everything is good). The kernel still lives (the guest replies to pings, and the kernel prints "BUG: soft lockup" every minute, but that's all it can do when it happens). I made some screenshots, available here: http://www1.wpkg.org/lockup1.png http://www1.wpkg.org/lockup2.png I tried adding "-cpu qemu64,-nx" to guest command line, but it didn't help. The guest is running Debian Lenny (2.6.26 kernel) with virtio. Is it a known issue? Is there a workaround to it? qemu-kvm is 0.11.0; kernel modules: 86. Below, CPUs on both hosts: host_1 CPU: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2212 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 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 pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 1994.96 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 host_2 CPU: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU 3050 @ 2.13GHz stepping : 6 cpu MHz : 2133.407 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 10 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 lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm bogomips : 4270.04 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: -- Tomasz Chmielewski http://wpkg.org -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
