Does LMDE's version of qemu not support -kqernel-kqemu?

[pythonscript]

I installed qemu and qemu-kvm from the repositories, and now I'm trying to create a virtual machine on my x64 system. For example, to run Ubuntu 12.04 x64 edition:

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qemu-img create -f qcow2 ubuntu.img 5G
qemu-system-x86_64 -m 512 -hda ubuntu.img -cdrom ubuntu-12.04.2-desktop-amd64.iso -boot d -kernel-kqemu


This returns an error:

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qemu-system-x86_64: -kernel-kqemu: invalid option


I'm using this version of qemu:

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QEMU emulator version 1.1.2 (Debian 1.1.2+dfsg-2), Copyright (c) 2003-2008 Fabrice Bellard


I've seen tangentially related posts or bug reports, like these posts, but those either apply to old versions or are simply old posts that don't fully explain this.

How do I use this option with qemu? Virtual machines are far too slow without it.