Hi list, when trying to install Windows7 in a qemu-kvm 1.0.1 installation on Gentoo on my host running Linux joequad 3.3.7 #1 SMP PREEMPT Sun Jun 3 12:05:59 CEST 2012 x86_64 Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz GenuineIntel GNU/Linux with a host CPU of processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz stepping : 10 microcode : 0xa07 cpu MHz : 2003.000 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 nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority bogomips : 5680.90 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: the installation first works fine but upon first reboot qemu terminates with: KVM: entry failed, hardware error 0x80000021 If you're runnning a guest on an Intel machine without unrestricted mode support, the failure can be most likely due to the guest entering an invalid state for Intel VT. For example, the guest maybe running in big real mode which is not supported on less recent Intel processors. EAX=00000010 EBX=00000080 ECX=00000000 EDX=00000080 ESI=0025da4a EDI=0007da4a EBP=00001f20 ESP=00000200 EIP=0000009b EFL=00000002 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0020 00000200 0000ffff 00009300 CS =b000 002b0000 0000ffff 0000f300 SS =0020 00000200 0000ffff 0000f300 DS =0020 00000200 0000ffff 00009300 FS =0020 00000200 0000ffff 00009300 GS =0020 00000200 0000ffff 00009300 LDT=0000 00000000 0000ffff 00008200 TR =0000 00000000 0000ffff 00008b00 GDT= 002b0000 00000027 IDT= 00000000 000003ff CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 Code=02 00 00 ea 91 00 00 00 18 00 0f 20 c0 66 83 e0 fe 0f 22 c0 <66> 31 c0 8e d8 8e c0 8e d0 66 bc 00 04 00 00 8e e0 8e e8 ea 00 00 00 20 00 00 00 20 4a da which disassembles to 0: 02 00 add (%eax),%al 2: 00 ea add %ch,%dl 4: 91 xchg %eax,%ecx 5: 00 00 add %al,(%eax) 7: 00 18 add %bl,(%eax) 9: 00 0f add %cl,(%edi) b: 20 c0 and %al,%al d: 66 83 e0 fe and $0xfffffffe,%ax 11: 0f 22 c0 mov %eax,%cr0 14: 66 31 c0 xor %eax,%eax 17: 8e d8 mov %ax,%ds 19: 8e c0 mov %ax,%es 1b: 8e d0 mov %ax,%ss 1d: 66 bc 00 04 00 00 mov $0x400,%esp 23: 8e e0 mov %ax,%fs 25: 8e e8 mov %ax,%gs 27: ea 00 00 00 20 ljmp $0x2000,$0x0 Since the instruction clears PE of %cr0, I'm pretty sure it's trying to enter real mode again (for a very brief period no doubt) before firing up the OS. Since I believe my CPU is too old and does not support "Unrestricted Guest", this causes qemu to barf. Is this assessment correct? Is there some way of getting qemu to switch to "soft" emulation in real mode and to use KVM in protected mode? Or is it impossible to run Windows 7 with kvm on a Core Quad (which possibly doesn't support "Unrestricted Guest")? For reference, there's at least one more person having an identical problem (I've also posted in that thread): http://forums.gentoo.org/viewtopic-p-7054198.html To find out if my CPU really does not suport "Unrestricted Guest" I've also posted http://software.intel.com/en-us/forums/showthread.php?t=105687 Any help is greatly appreciated, Best regards, Joe -- 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
