I'm running Ubuntu 11.04 (Natty Narwhal) 64-bit and recently installed qemu-kvm. Now I want to start a 64-bit 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 Arch Linux the normal way, but it will give me an error that I have to use a 64-bit machine to run this live CD. Now, I tried to get a list of CPUs 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 [486] x86 [coreduo] x86 [kvm32] x86 [qemu32] x86 [kvm64] x86 [core2duo] x86 [phenom] x86 [qemu64] x86 [host] So, how do I make QEMU emulate a 64-bit CPU?
3 Answers
I asked myself the same question a few days ago and couldn't figure it out. Now I see your list (perhaps I couldn't find how to get this list?) and the obvious choices seem to be kvm64, qemu64 and host. I also tried core2duo and phenom, they also work.
I asked myself the same question a few days ago and couldn't figure it out. Now I see your >list (perhaps I couldn't find how to get this list?) and the obvious choices seem to be >kvm64, qemu64 and host. I also tried core2duo and phenom, they also work.
Running "qemu -cpu qemu64 ..." (or other architectures) did not work for me (on Debian Sid/unstable). I did get my 64bit ISO image to run with "qemu-system-x86_64 ..."
1This command worked well for me, maybe it can help someone else:
qemu /path/to/hdfile -m 900 -vga std -enable-kvm -cdrom ~/file.iso -boot d -net user -usb -cpu kvm64 
