virt-manager VS qemu - which one uses KVM?
 

I am writing a kernel module, that accesses the vm_list struct from the KVM module, and looks for stuff. So I have loaded it with 'insmod' and all was good. Then I ran `qemu-system-x86_64 (..options..)`, which started the VM just fine, but the vm_list was empty. After some research and talking to friends I just used virt-manager instead of qemu, suddenly I had my list filled up, and I could access all the info I needed.

So my question, what is qemu-system-x86_64 using? is there a command line that runs the VM using KVM module?

Thanks.

I presume one of the options you ran with qemu-system-x86_64 was -enable-kvm. Both virt-manager and qemu use KVM, if that is what you are using for virtualization. Of course you can run qemu without KVM too. virt-manager uses libvirt.