On 05/07/13 23:46, Paolo Bonzini wrote: > Il 07/05/2013 14:06, Gleb Natapov ha scritto: >> On Tue, May 07, 2013 at 08:05:27PM +0900, Jun'ichi Nomura wrote: >>> On 05/07/13 19:35, Gleb Natapov wrote: >>>> On Tue, May 07, 2013 at 06:55:23PM +0900, Jun'ichi Nomura wrote: >>>>> With v3.9 kernel and Nehalem CPU (i.e. unrestricted_guest=N), >>>>> a guest stuck during boot (seemingly in BIOS). >>>>> When setting emulate_invalid_guest_state=0, it does boot. >>>>> (With v3.8 kernel and older, the guest used to boot fine by default.) >>>>> >>>>> The userspace is qemu-kvm of RHEL6. >>>>> It seems the guest boots up fine with upstream qemu 1.4.1. >>>>> >>>>> Is this a kernel bug? Or is the userspace just too old to run on v3.9? >>>>> >>>>> >>>> It should work. What seabios version are you using? >>> >>> It's seabios-0.6.1.2-26.el6. >>> (and qemu-kvm-0.12.1.2-2.355.el6) >>> >> Works for me, but it looks like in your case the bios is in option rom. > > What version of vgabios, too? vgabios-0.6b-3.7.el6 sgabios-bin-0-0.3.20110621svn.el6 >> What are you booting from? What's the qemu command line? >From disk image. Command line is like this: /usr/libexec/qemu-kvm -name vm12 -S -M rhel6.3.0 -enable-kvm -m 1024 -smp 2,sockets=2,cores=1,threads=1 -uuid 539b7cdb-7afc-4237-bdbc-8ddbdf5e0204 -nographic -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/vm12.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/dev/kvmvg/vm12,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 When I edit VM definition so that qemu-kvm is invoked without '-nographic', the guest boots fine. >> What is the output of "virsh qemu-monitor-command vm12 --hmp x/i $pc" >> when it hangs? # virsh qemu-monitor-command vm12 --hmp x/4i \$pc 0x00000000000c06ca: aam $0xa 0x00000000000c06cc: mov %ax,%bx 0x00000000000c06ce: mov %bh,%al 0x00000000000c06d0: aam $0xa # virsh qemu-monitor-command vm12 --hmp x/8b \$pc 00000000000c06ca: 0xd4 0x0a 0x89 0xc3 0x88 0xf8 0xd4 0x0a -- Jun'ichi Nomura, NEC Corporation -- 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
