Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > Il 29/05/2014 19:45, Chris Webb ha scritto: >> Chris Webb <chris@xxxxxxxxxxxx> wrote: >> >>> My CPU flags inside the crashing guest look like this: >>> >>> 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 pdpe1gb lm rep_good nopl >>> extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave >>> avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse >>> 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 >>> >>> whereas in a (working) -cpu qemu64 guest, they look like this: >>> >>> fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx >>> fxsr sse sse2 ht syscall nx lm nopl pni cx16 x2apic popcnt hypervisor lahf_lm >>> cmp_legacy svm abm sse4a >> >> I thought I'd try to bisect on processor flags to see which was/were >> implicated. > > Can you dump the full /proc/cpuinfo? On the host, it looks like this: processor : 0 vendor_id : AuthenticAMD cpu family : 21 model : 2 model name : AMD Opteron(tm) Processor 6328 stepping : 0 microcode : 0x600081c cpu MHz : 3200.000 cache size : 2048 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 32 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 mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid amd_dcm aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 bogomips : 6399.89 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro [ x8 for processor 0 -> 7; full dump at http://cdw.me.uk/tmp/host-cpuinfo.txt ] and on the guest it looks like: processor : 0 vendor_id : AuthenticAMD cpu family : 21 model : 2 model name : AMD Opteron(tm) Processor 6328 stepping : 0 microcode : 0x1000065 cpu MHz : 3199.946 cache size : 2048 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 mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 bogomips : 6399.89 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: [ x4 for processor 0 -> 3; full dump at http://cdw.me.uk/tmp/guest-cpuinfo.txt ] Many thanks in advance for any pointers. Best wishes, Chris.-- 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
