Qemu与kvm相关的命令行参数含意
On Sun, Jan 6, 2013 at 12:27 PM, lei yang <yanglei.fage@gmail.com> 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
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