Testing qemu 2.1 arm64 support
qemu-system-aarch64 -m 1024 -cpu cortex-a57 -nographic -machine virt -kernel trusty-server-cloudimg-arm64-vmlinuz-generic -append 'root=/dev/vda1 rw rootwait mem=1024M console=ttyAMA0,38400n8 init=/usr/lib/cloud-init/uncloud-init ds=nocloud ubuntu-pass=ubuntu' -drive if=none,id=image,file=trusty-server-cloudimg-arm64-disk1.img -netdev user,id=user0 -device virtio-net-device,netdev=user0 -device virtio-blk-device,drive=image
qemu-system-aarch64 -m 1024 -cpu cortex-a57 -nographic -machine virt -kernel trusty-server-cloudimg-arm64-vmlinuz-generic -append 'root=/dev/vda1 rw rootwait mem=1024M console=ttyAMA0,38400n8 init=/usr/lib/cloud-init/uncloud-init ds=nocloud' -drive if=none,id=image,file=trusty-server-cloudimg-arm64-disk1.img -netdev user,id=user0 -device virtio-net-device,netdev=user0 -device virtio-blk-device,drive=image
A Quick'n'Dirty Set-up of an Aarch64 Ubuntu 14.04 VM with QEMU
qemu-system-aarch64 -machine virt -cpu cortex-a57 -nographic -smp 1 -m 4096 -global virtio-blk-device.scsi=off -device virtio-scsi-device,id=scsi -drive file=../qemu-images/ubuntu-core-14.04.1-core-arm64.img,id=coreimg,cache=unsafe,if=none -device scsi-hd,drive=coreimg -kernel ../qemu-images/vmlinuz-3.13.0-32-generic -initrd ../qemu-images/initrd.img-3.13.0-32-generic -netdev user,id=unet -device virtio-net-device,netdev=unet --append "console=ttyAMA0 root=/dev/sda"
qemu-system-arm -kernel vmlinuz-3.13.0-45-generic-lpae -initrd initrd.img-3.13.0-45-generic-lpae -M vexpress-a15 -serial stdio -m 1024 -append 'root=/dev/mmcblk0 rw rootwait mem=1024M console=ttyAMA0,38400n8' -drive if=sd,id=image,file=trusty-server-cloudimg-armhf.img -dtb vexpress-v2p-ca15-tc1.dtb
http://wiki.gentoo.org/wiki/Crossdev_qemu-static-user-chroot
https://dktrkranz.wordpress.com/2013/11/19/cross-architecture-linux-containers-in-debian/