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Description of problem: Boot win2012 guest with "-device virtio-net-pci ... status=off", set_link virtio-net-pci0 off in qemu-kvm monitor, After a while in monitor show lots of "virtio_ioport_write: unexpected address 0x13 value 0x0" Version-Release number of selected component (if applicable): host kernel: 2.6.32-421.el6.x86_64 qemu-kvm: qemu-kvm-0.12.1.2-2.410.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.Boot a win2012 guest: /usr/libexec/qemu-kvm -M pc -cpu SandyBridge -nodefaults -nodefconfig -enable-kvm -m 4G -smp 2,sockets=1,cores=2,threads=2 -name test \ -rtc base=localtime,clock=host,driftfix=slew -k en-us -boot menu=on -vga qxl -vnc :1 -monitor stdio \ -drive file=/home/RHEL6.5-64.qcow2,if=none,id=drive-system-disk,media=disk,format=qcow2,aio=native,werror=stop,rerror=stop -device virtio-blk-pci,scsi=on,bus=pci.0,drive=drive-system-disk,id=system-disk,bootindex=1,addr=0x5 \ -netdev tap,id=hostnet0,vhost=on,script=/etc/ovs-ifup,downscript=/etc/ovs-ifdown -device virtio-net-pci,netdev=hostnet0,id=virtio-net-pci0,mac=00:22:15:27:54:8d,bus=pci.0,addr=0x9,status=off \ -usb -device usb-tablet 2. (qemu) set_link virtio-net-pci0 off 3. Inside guest: # ping ...... Actual results: In monitor show lots of information, link this: (qemu) virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 virtio_ioport_write: unexpected address 0x13 value 0x0 Expected results: Show no information in monitor Additional info: status=on/off guest set_link on/off result on win2012 on normal on win2012 off normal off win2012 on normal off win2012 off warning information off rhel6.5 off normal
Pls retest this issue on virtio-win-1.6.7-2.el6
1. Latest drivers should not have those printouts at all. 2. On other hand, please don't close this bug yet as it can point to other issues. 2.1. When you set link to off and see this message - can you disable the driver in the guest? 2.2. Is guest network alive after link set to on? Thanks, Yan.
Retest this with RHEL6.5 release version: virtio-win-prewhql-0.1-74 Steps as Description: After "(qemu) set_link virtio-net-pci0 off", But this time no show “virtio_ioport_write: unexpected address 0x13 value 0x0” After "(qemu) set_link virtio-net-pci0 off", disable the driver in the guest, device Manager show "Not Responding", But close device Manager,once again display device Manager and will find the driver has already been disabled. From disable to enable can work well. From enable to disable will show "Not Responding".