Description of problem: Xen in RHEL5.9 host doesn't support rhel7 fv guest Version-Release number of selected component (if applicable): kernel-2.6.18-348.el5 libvirt-0.8.2-29.el5 xen-3.0.3-142.el5 How reproducible: 100% Steps to Reproduce: 1.Install a rhel7 fv guest via url 2. After guest start , [0.000000]Cannot get hvm parameter 18:-22 will show in screen Actual results: Fail Expected results: Success Additional info: The pv guest can success to install.
This problem is caused by missing patch in RHEL7 kernel that allow run on older xen hypervisors. *** This bug has been marked as a duplicate of bug 866735 ***