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Date: Fri, 25 May 2018 10:31:26 +0800 From: Jason Wang <jasowang@...hat.com> To: Tiwei Bie <tiwei.bie@...el.com>, mst@...hat.com, virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Cc: wexu@...hat.com, jfreimann@...hat.com Subject: Re: [RFC v5 0/5] virtio: support packed ring 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). Thanks
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