hello, i have a problem;when i enable vt in bios of my system, i can not boot into my fedora with xen hypervisor system.In fact, when vt is enabled and i wanted to boot into xen, i got this error: iommu: mapping reserved region failed and after that, it returned me to the grub. what's the problem? if i disable vt, i can boot into xen. i have a HP Pavilion Entertainment PC. thanks