[Pkg-libvirt-maintainers] Bug#736235: Cannot run Windows 8+ guests under KVM

[James Bennet]

Package: libvirt0
Version: 0.9.12-11+deb7u4

I am trying to run a Windows 8 guest using KVM on a Wheezy box. However, I get a panic from the Windows NT kernel at boot, with 0x0000005D “Unsupported CPU”. The box runs Windows Xp->7 guests fine but displays this error with 8 and 8.1. I have ensured that the NX,SSE2,PAE CPU options, which Windows requires, are available, and set. But it still does not work. I have qemu-kvm 1.1.2+dfsg-6 and libvirt0 0.9.12-11+deb7u4.