Re: [libvirt] [PATCH] kvm/virtio: Set IFF_VNET_HDR when setting up tap fds

On Mon, Jan 26, 2009 at 10:39:25AM +0000, Mark McLoughlin wrote:

> It's nearly five months since kvm-74 - the first KVM release with this > feature - was released. Up until now, we've not added libvirt support > because there is no clean way to detect support for this in QEMU at > runtime. A brief attempt to add a "info capabilities" monitor command > to QEMU floundered. Perfect is the enemy of good enough. Probing the > KVM version will suffice for now. ACK to the approach taken here. I've had todo the same version based check for the migration features, since that has broken compatability and is also totally undocumented in the command line help output.