I’ve recently upgraded another computer from Fedora 9 to Fedora 11, and I’ve decided to try the built-in KVM (i.e. Applications -> System Tools -> Virtual Machine Manager). I wanted a virtual machine that had bridged mode networking, but it wasn’t available by default. To get it as an option, I disabled SELinux (not sure if it was necessary), followed some special instructions to setup a bridged interface, and restarted my network and libvirtd.

Now I’ve got a working guest OS inside of KVM, and I like it. The guest OS feels snappy and responsive.

Update: KVM and the accompanying tools aren’t as mature as VirtualBox or VMWare. E.g. I didn’t see how to get my USB flash drive to be recognized by a KVM guest OS. At one point, I tried to use VirtualBox at the same time as KVM. VirtualBox told me I needed to disable the KVM kernel module before using VirtualBox.