I'm running Ubuntu 11.04 64 bit and recently installed qemu-kvm. Now I want to start a 64bit live CD using
qemu -m 512 -boot d -cdrom archlinux-2010.05-netinstall-x86_64.iso This loads the image and I can select to boot ArchLinux the normal way, but it will give me an error that I have to use 64bit machine to run this live CD. Now, I tried to get a list of cpu qemu can emulate for me, and ended up with this output:
axle@z370l:~/Downloads$ qemu -cpu ? x86 [n270] x86 [athlon] x86 [pentium3] x86 [pentium2] x86 [pentium] x86  x86 [coreduo] x86 [kvm32] x86 [qemu32] x86 [kvm64] x86 [core2duo] x86 [phenom] x86 [qemu64] x86 [host]
So, how do I make qemu emulate a 64bit cpu?