On 06/03/2012 04:01 PM, Johannes Bauer wrote: > On 03.06.2012 14:33, Avi Kivity wrote: > >>> when trying to install Windows7 in a qemu-kvm 1.0.1 installation on >>> Gentoo on my host running >> >> Is that a 32-bit or 64-bit Windows 7? > > 64 bit. But I've also (in despair) tried installing 32 Bit Windows 7, > with the exact same effect. > >>> 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 >> >> Pre-unrestricted mode hosts require cs.selector (first number) * 16 == >> cs.base (second number). This clearly isn't the case here. Gleb points out that cs.base == gdt.base, which doesn't make a lot of sense. So some corruption has happened earlier. Please follow http://www.linux-kvm.org/page/Tracing and post the last few thousand lines somewhere. Trace a uniprocessor guest if the problem reproduces that way. > > I've checked with vmxcap and my PC indeed does not support unrestricted > mode. My Laptop (on which the identical image works perfectly) does. > >> # rmmod kvm_intel >> # modprobe kvm_intel emulate_invalid_guest_state=1 >> >> Warning: experimental code. > > Tried it out -- I don't get the error anymore, but qemu just hangs on > boot with 100% CPU. :-( Not too surprising, this hasn't been tested in quite a while. > >>> Or is >>> it impossible to run Windows 7 with kvm on a Core Quad (which possibly >>> doesn't support "Unrestricted Guest")? >> >> It should be possible. Did you do anything special with the guest >> (install any software?) before rebooting? Is this repeatable? > > Nothing at all, just a standard installation. Did not even get to the > point where I *could* install software (it reboots during the > installation and that's where it doesn't come up anymore). > > I even tried to completing the installation on my laptop (which works), > then copy the image back on my desktop PC: Same error. That should help the tracing effort. > > Any hints on how I could debug the hang with the emulation of invalid > guest state? Or is there a more recent version (git?) than a 3.3.7 > kernel that I should try out? 3.3.7 should definitely work. Let's see what the traces tell us. -- error compiling committee.c: too many arguments to function -- 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
