[Bug 1251470] [NEW] Guest not working in KVM mode but does in TCG mode

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Qemu: 1.5.0 (Debian 1.5.0+dfsg-3ubuntu5)
Host: Ubuntu 13.10 x86_64 (Intel Core i7-950)
Guest: FreeBSD 9.2 RELEASE x86_64

As initially reported here: https://www.redhat.com/archives/libvirt-users/2013-November/msg00066.html
I was told that this is a bug in Qemu.

Basically this command works:
qemu-system-x86_64 -hda images/FreeBSD-9.2-RELEASE-amd64.img

But this one doesn't:
qemu-system-x86_64 -machine accel=kvm -hda images/FreeBSD-9.2-RELEASE-amd64.img

FreeBSD is stuck after the bootloader:
Booting...
CPU doesn't support long mode

** Affects: qemu
     Importance: Undecided
         Status: New

** Affects: qemu (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 saucy
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Guest not working in KVM mode but does in TCG mode
https://bugs.launchpad.net/bugs/1251470
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