Hi all, I get continuous reboots on my guest system, including these dmesg entries: [ 31.770538] device tap0 entered promiscuous mode [ 31.770554] br0: port 2(tap0) entering learning state [ 39.259921] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 4000000080532d74 [ 39.259936] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 39.259946] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 44.870691] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 4000000080532d74 [ 44.870801] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 44.870901] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 46.727081] br0: port 2(tap0) entering forwarding state [ 50.481469] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 4000000080532d74 [ 50.481583] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 50.481685] kvm: 1517: cpu0 unhandled wrmsr: 0x0 data 0 [ 55.827950] br0: port 2(tap0) entering disabled state [ 55.828110] device tap0 left promiscuous mode [ 55.828200] br0: port 2(tap0) entering disabled state My ./configure is: ./configure --prefix= --target-list=x86_64-softmmu --disable-vnc-png --disable-vnc-jpeg --disable-vnc-tls --disable-vnc-sasl --audio-card-list= --audio-drv-list= --enable-sdl --disable-xen --disable-brlapi --disable-bluez --disable-nptl --disable-curl --disable-guest-agent --disable-guest-base --disable-werror --disable-attr My qemu cmdline is: /usr/X11R6/bin/qemu-system-x86_64 -serial /dev/ttyS2 -readconfig /etc/ich9-ehci-uhci.cfg -device usb-host,bus=ehci.0 -device usb-tablet -drive file=/dev/sda2,cache=off -m 1536 -net nic -net tap,script=/etc/qemu-ifup -no-acpi -monitor stdio -L /usr/X11R6/share/qemu -boot c -localtime -enable-kvm Was fine with qemu-kvm-1.0 and the same options! Best regards, Erik -- 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