I have plan9 running on a qemu installation, and I had a similiar problem
installing it.

The --no-kvm-irqchip option on the command line may have solved the problem.


I also may have walked away from the machine for 6 hours only to return and
find that it had installed,    .... only to tear down the ubuntu distro
based VM and replace the thing with a gentoo kernel specifically for hosting
kvm.

The gentoo qemu + --no-kvm-irqchip  thing has definately kept the plan9.iso
installation online. Here is my command-line, its miniscule compared to
yours.

qemu-system-x86_64 --enable-kvm -net nic,macaddr=45:45:45:45:45:45 -net
tap,ifname=9tap,script=no,downscript=no -vga std --no-kvm-irqchip -vnc:1
-hda /home/kvm9/plan9.img -m 256 -daemonize

If you havent tried this already:
Or perhaps this, --no-kqemu since this is BSD complaining about an invalid
nvram checksum, other threads seem to indicate the CMOS layout error google
search pops on BSD across softwares.

http://qemu-forum.ipi.fi/viewtopic.php?f=7&t=1921


On Wed, Mar 2, 2011 at 10:12 AM, Stanley Lieber <stanley.lieber@gmail.com>wrote:

> To recap:
>
> I'm attempting to install Plan 9 from a recent .iso on a hosted KVM/qemu
> account. Both the Bell Labs and 9atom installers die here:
>
> http://farm6.static.flickr.com/5098/5468343552_28695be1dd_o.png
>
> I've managed to obtain the host's KVM config file, in libvirtd XML format:
>
> <domain type='kvm' id='100'>
>  <name>user-2</name>
>  <uuid>REDACTED</uuid>
>  <memory>786432</memory>
>  <currentMemory>786432</currentMemory>
>  <vcpu>1</vcpu>
>  <os>
>    <type arch='x86_64' machine='pc'>hvm</type>
>    <boot dev='hd'/>
>  </os>
>  <features>
>    <acpi/>
>  </features>
>  <clock offset='utc'/>
>  <on_poweroff>destroy</on_poweroff>
>  <on_reboot>restart</on_reboot>
>  <on_crash>destroy</on_crash>
>  <devices>
>    <emulator>/usr/bin/kvm</emulator>
>    <disk type='block' device='disk'>
>      <source dev='/dev/vol1/user-2'/>
>      <target dev='hda' bus='ide'/>
>    </disk>
>    <disk type='file' device='cdrom'>
>      <source file='/home/user/ISO/plan9.iso'/>
>      <target dev='hdc' bus='ide'/>
>      <readonly/>
>    </disk>
>    <interface type='ethernet'>
>      <mac address='52:54:00:27:34:07'/>
>      <script path='/home/kvm-admin/scripts/attach-tap-to-vlan.sh'/>
>      <target dev='tap0-407'/>
>      <model type='e1000'/>
>    </interface>
>    <serial type='tcp'>
>      <source mode='bind' host='127.0.0.1' service='8081'/>
>      <protocol type='telnet'/>
>      <target port='0'/>
>    </serial>
>    <console type='tcp'>
>      <source mode='bind' host='127.0.0.1' service='8081'/>
>      <protocol type='telnet'/>
>      <target port='0'/>
>    </console>
>    <input type='mouse' bus='ps2'/>
>    <graphics type='vnc' port='5981' autoport='no' listen=''/>
>  </devices>
> </domain>
>
> The actual KVM command is:
>
> /usr/bin/kvm -S -M pc -m 768 -smp 1 -name user-2 -uuid
> 101ff6a0-206b-012e-09d2-525400972102 -monitor pty -boot c -drive
> file=/dev/vol1/user-2,if=ide,index=0,boot=on -drive
> file=/home/user/ISO/plan9.iso,if=ide,media=cdrom,index=2 -net
> nic,macaddr=52:54:00:27:34:07,vlan=0,model=e1000 -net
> tap,ifname=tap0-407,script=/home/kvm-admin/scripts/attach-tap-to-vlan.sh,vlan=0
> -serial telnet:127.0.0.1:8081,server,nowait -parallel none -usb -vnc
> :81,password
>
> Does anything here look obviously incorrect?
>
> The hosting sevice is interested in offering Plan 9 services, so once
> we get this working it may well be of use to others.
>
> -sl
>
>
>


-- 
⎼⎺⎺├@┼␊├├≤-␍⎼␊▒␍:/␤⎺└␊/⎼␤⎺#