According to comment #3, this bug has been fixed, so I'm closing this ticket now. If you can still reproduce this issue with the latest version from QEMU, please feel free to open this ticket again.
** Changed in: qemu Status: New => Fix Released -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1251470 Title: Guest not working in KVM mode but does in TCG mode Status in QEMU: Fix Released Status in qemu package in Ubuntu: Fix Released Status in qemu source package in Saucy: Won't Fix Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1251470/+subscriptions