title: libvirt: how to prevent "accel=kvm"
body: <p>First, some background:</p>
  
  <p>I suppose I've found a bug with KVM, at least on my system.</p>
  
  <p>When I try to install Windows XP via virt-manager, the installer aborts/reboots.</p>
  
  <p>But if I run a raw <code>qemu-system-i386</code> command (see below), it succeeds.</p>
  
  <p>From looking at the logs in <code>/var/log/libvirt/qemu/...</code>, the key difference is the "accel=kvm" argument (equivalent to <code>-enable-kvm</code>).</p>
  
  <p>So, narrowing it down, this command succeeds:</p>
  
  <pre><code>qemu-system-i386 \
      -m 512 \
      -usb \
      -cdrom path/to/WinXP_CD.iso \
      -boot d \
      "$image"
  </code></pre>
  
  <p>But this next command results in an infinite series of reboots. The XP installer starts, but after scanning the system, just reboots rather than proceeding:</p>
  
  <pre><code>qemu-system-i386 \
      -enable-kvm \
      -m 512 \
      -usb \
      -cdrom path/to/WinXP_CD.iso \
      -boot d \
      "$image"
  </code></pre>
  
  <p>Perhaps you don't believe I have KVM working properly on my system.
  But, I can install other OSes (eg: FreeBSD) using KVM just fine. This seems to be XP-specific.</p>
  
  <p>So now, my questions:</p>
  
  <ol>
  <li><p>How do I force libvirt to <em>NOT</em> use KVM for a chosen VM? Ideally via <code>virt-manager</code>, but I'm fine with <code>virsh</code> too.
  I imagine somewhere in the mess of XML is some setting, but I'm not terribly familiar.</p></li>
  <li><p>aside: any idea where I should log this bug? Against KVM? Libvirt? QEMU?</p></li>
  </ol>