I could you try with "-cpu host,level=2" I see you have a westmere cpu, and maybe this is related:
I'm developper on the proxmox distribution. We are using kvm git, and one of our user can't boot guest win7x64 with -cpu host. (but it's working with linux guest). It's working fine with -cpu host,level=9 but not with -cpu host,level=10 or level=11. We also try with new Westermere cpudefs in target-x86_64.conf (see redhat patches from february 2012) [cpudef] name = "Westmere" level = "11" vendor = "GenuineIntel" family = "6" model = "44" stepping = "1" feature_edx = "sse2 sse fxsr mmx clflush pse36 pat cmov mca pge mtrr sep apic cx8 mce pae msr tsc pse de fpu" feature_ecx = "aes popcnt sse4.2 sse4.1 cx16 ssse3 sse3" extfeature_edx = "i64 syscall xd" extfeature_ecx = "lahf_lm" xlevel = "0x8000000A" model_id = "Westmere E56xx/L56xx/X56xx (Nehalem-C)" That also doesn't without change level < 10. User also report that "-cpu host" was working fine with qemu 0.15. I see that other intel cpudefs in target-x86_64.conf have level=2, maybe does it need to be the same for westmere ? Best Regards, Alexandre Derumier -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/921208 Title: win7/x64 installer hangs on startup with 0x0000005d. Status in QEMU: New Bug description: hi, during booting win7/x64 installer i'm observing a bsod with 0x0000005d ( msdn: unsupported_processor ). used command line: qemu-system-x86_64 -m 2048 -hda w7-system.img -cdrom win7_x64.iso -boot d adding '-machine accel=kvm' instead of default tcg accel helps to boot. installed software: qemu-1.0 linux-3.2.1 glibc-2.14.1 gcc-4.6.2 hw cpu: processor : 0..7 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz stepping : 7 microcode : 0x14 cpu MHz : 1995.739 cache size : 6144 KB physical id : 0 siblings : 8 core id : 3 cpu cores : 4 apicid : 7 initial apicid : 7 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 rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid bogomips : 3992.23 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/921208/+subscriptions
