On Sun, 2010-09-26 at 10:28 +0800, Jason Wang wrote:
> Vhost is a kernel-level backend for virtio. This patch add a nic_params named
> "vhost" to enable/disable vhost backend.
Jason, I had rebased your patches. The patches themselves look good, but
apparently the syntax proposed here is invalid, and I've tried with
different qemu variants:
- qemu from rhel6
- qemu-kvm.git HEAD
- qemu.git HEAD
All of them don't support vhost with netdev:
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---
> client/tests/kvm/kvm_vm.py | 7 +++++--
> client/tests/kvm/tests_base.cfg.sample | 2 ++
> 2 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/client/tests/kvm/kvm_vm.py b/client/tests/kvm/kvm_vm.py
> index 644903b..f448684 100755
> --- a/client/tests/kvm/kvm_vm.py
> +++ b/client/tests/kvm/kvm_vm.py
> @@ -258,9 +258,11 @@ class VM:
>
> def add_net(help, vlan, mode, ifname=None, script=None,
> downscript=None, tftp=None, bootfile=None, hostfwd=[],
> - netdev_id=None):
> + netdev_id=None, vhost=False):
> if has_option(help, "netdev"):
> cmd = " -netdev %s,id=%s" % (mode, netdev_id)
> + if vhost:
> + cmd +=",vhost=on"
> else:
> cmd = " -net %s,vlan=%d" % (mode, vlan)
> if mode == "tap":
> @@ -417,7 +419,8 @@ class VM:
> nic_params.get("nic_ifname"),
> script, downscript, tftp,
> nic_params.get("bootp"), redirs,
> - self.netdev_id[vlan])
> + self.netdev_id[vlan],
> + nic_params.get("vhost")=="yes")
> # Proceed to next NIC
> vlan += 1
>
> diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
> index 89e6f45..14e85af 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -620,6 +620,8 @@ variants:
> nic_model = virtio
> # you can add advanced attributes here
> # nic_extra_params =
> + # you can uncomment the following line to enable vhost-net backend
> + # vhost = yes
>
>
> # Guests
>
> --
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