The initial bluescreen is caused because of unsupported CPU feature bits (the DE flag, specifically). The experimental patch Clemens mentioned is here:
http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg01412.html Past that, however, there is a bug in QEMU's self-modifying code support that causes trouble with PatchGuard and results in a different BSOD. Patrick Hulin did some work debugging and fixing this: http://lists.gnu.org/archive/html/qemu-devel/2014-08/msg02161.html After that, 64-bit Windows 7 will run correctly under TCG. However it should be noted that his patch introduces other problems – e.g., running Paint Shop Pro 8.0 on Windows 7 32-bit will now crash on startup. So there is no proper fix yet, but for some use cases these patches may suffice. -- 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: Confirmed Status in qemu package in Ubuntu: Triaged 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
