- qemu is not part of CentOS, you probably got it from rpmforge.
- that means you do not need qemu for KVM usage
- SELinux cannot know about it
- there's probably a different preferred way to use KVM on CentOS
From a recent mail in this list:
Well, it turns out that qemu is required and kvm-qemu-img was the source of the problem. Removing this and installing qemu instead fixed the problem.
Actually I did the other way round: yum remove qemu (which is in the extras repo) yum install -x qemu kvm (excluding qemu and thus kvm-qemu-img will be taken)
=> make sure you have 'kvm-qemu-img' installed and not 'qemu', according to Kai's comment above, this may help you