On Sun, Jan 6, 2013 at 12:27 PM, lei yang <yanglei.fage@xxxxxxxxx> wrote: > What's the different with below combos? The difference is historical, it's just how the command-line options evolved over time. > 1)qemu --enable-kvm The old way. Still useful because it's slightly easier to type than --machine accel=kvm. > 2)qemu accel=kvm The "modern" way. > 3)qemu without above parameters when kvm kmod has been load There is a difference in behavior between QEMU and qemu-kvm here: QEMU uses TCG and not KVM by default, regardless of whether the kvm.ko module has been loaded or not. qemu-kvm uses KVM by default, if available. The qemu-kvm fork has been retired so it's best not to rely on this behavior. Future distro packages will be built from QEMU and unless a code change is made, the default accelerator is TCG. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
