Hi: This series implement basic in order feature support for vhost_net. This feature requires both driver and device to use descriptors in order which can simplify the implementation and optimizaton for both side. The series also implement a simple optimization that avoid read available ring. Test shows 10% performance improvement at most. More optimizations could be done on top. Changes from V1: - no code changes - add result of SMAP off Jason Wang (3): virtio: introduce in order feature bit vhost_net: support in order feature vhost: don't touch avail ring if in_order is negotiated drivers/vhost/net.c | 6 ++++-- drivers/vhost/vhost.c | 19 ++++++++++++------- include/uapi/linux/virtio_config.h | 6 ++++++ 3 files changed, 22 insertions(+), 9 deletions(-) -- 2.17.1
