Debian 12 KVM Windows guest fails to start.

Booting into Debian 12 with the current kernel vmlinuz-6.1.0-11-amd64 and trying to start a windows guest with Virtual Machine Manager give an error: 'Error starting the domain: the CPU is incompatible with host CPU: Host CPU does not provide required features: hle, rtm.
Code:Error starting domain: the CPU is incompatible with host CPU: Host CPU does not provide required features: hle, rtm

Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 72, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 108, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 57, in newfn
ret = fn(self, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/share/virt-manager/virtManager/object/domain.py", line 1402, in startup
self._backend.create()
File "/usr/lib/python3/dist-packages/libvirt.py", line 1373, in create
raise libvirtError('virDomainCreate() failed')
libvirt.libvirtError: the CPU is incompatible with host CPU: Host CPU does not provide required features: hle, rtmWhen I boot with the previous kernel vmlinuz-5.10.0-23-amd64 it works as expected.

How do I go about tracking down the problem?