Description of problem: x2apic CPU flags should be unconditionally enabled (regardless of host CPU), and enabled by default (see http://fedoraproject.org/wiki/Features/Virtx2apic). Regretfully, it can't be. I'm getting the following error; Error starting domain: internal error guest CPU is not compatible with host CPU Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/engine.py", line 959, in asyncfunc vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 1128, in startup self._backend.create() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 330, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: internal error guest CPU is not compatible with host CPU Version-Release number of selected component (if applicable): libvirt-client-0.8.8-4.fc15.x86_64 libvirt-python-0.8.8-4.fc15.x86_64 libvirt-0.8.8-4.fc15.x86_64 virt-manager-0.8.7-4.fc15.noarch How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Thanks for the report, fixed upstream now: http://git.fedorahosted.org/git?p=virt-manager.git;a=commit;h=cbaedd87bcfd44c3a8bdf99891c31ec9f41e3d0b The CPU feature list now allows setting the actual feature 'policy' rather than hardcode 'require', which requires the host CPU to actually support the feature flag. For x2apic you'll want to select the 'force' policy
virt-manager-0.9.1-1.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/virt-manager-0.9.1-1.fc15
Package virt-manager-0.9.1-1.fc15: * should fix your issue, * was pushed to the Fedora 15 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing virt-manager-0.9.1-1.fc15' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-1173/virt-manager-0.9.1-1.fc15 then log in and leave karma (feedback).
virt-manager-0.9.1-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.