Hi Michael, On 5/13/2016 1:02 AM, Michael S. Tsirkin wrote: > On Thu, May 12, 2016 at 03:08:05PM +0800, Tan, Jianfeng wrote: >> (2) It's more aligned to previous logic to hide the detail to differentiate >> modern/legacy device. > Why is there a need to support legacy interfaces at all? It's a container > so if it's in use one can be reasonably sure you have a new kernel. >
No, there's no need. The added device, virtio-user, is parallel to legacy and modern device. But there's a feature bit inside vhost user protocol for vhost user to decide the length of header, current implementation by default set this feature bit. Thanks, Jianfeng
