Messages in this thread | | | Subject | Re: [RFC v3 0/5] virtio: support packed ring | From | Jason Wang <> | Date | Wed, 2 May 2018 11:49:43 +0800 |
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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
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