On 2018年04月25日 13:15, Tiwei Bie wrote:
Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/4/23/12 Both of ping and netperf worked as expected (with EVENT_IDX disabled). But there are below known issues: 1. Reloading the guest driver will break the Tx/Rx;
It looks like the reason is we don't sync wrap counter information between host and qemu through VHOST_SET/GET_VRING_BASE. And both vhost and qemu need to do this through encoding warp counters to higher bits of vhost_vring_state.num,
Thanks
