On 2018年05月22日 16:16, 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 (RFC v4): https://lkml.org/lkml/2018/5/16/501 Both of ping and netperf worked as expected w/ EVENT_IDX disabled. Ping worked as expected w/ EVENT_IDX enabled, but netperf didn't (A hack has been added in the driver to make netperf test pass in this case. The hack can be found by `grep -rw XXX` in the code).
Looks like this is because a bug in vhost which wrongly track signalled_used and may miss an interrupt. After fixing that, both side works like a charm.
I'm testing vIOMMU and zerocopy, and will post a new version shortly. (Hope it would be the last RFC version).
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