Re: [dpdk-dev] [PATCH] vhost: fix dequeue zero copy not work with virtio1

2017-12-19 Thread Zhao, Bing
On 2017/12/15 20:48, Yuanhan Liu wrote: On Fri, Dec 15, 2017 at 10:33:41AM +, Loftus, Ciara wrote: >> >> Hi Junjie, >> >> On 12/13/2017 05:50 PM, Junjie Chen wrote: >>> This fix dequeue zero copy can not work with Qemu >>> version >= 2.7. Since from Qemu 2.7 virtio device >>> use virtio-1 pro

Re: [dpdk-dev] [PATCH] vhost: fix dequeue zero copy not work with virtio1

2017-12-15 Thread Yuanhan Liu
On Fri, Dec 15, 2017 at 10:33:41AM +, Loftus, Ciara wrote: > > > > Hi Junjie, > > > > On 12/13/2017 05:50 PM, Junjie Chen wrote: > > > This fix dequeue zero copy can not work with Qemu > > > version >= 2.7. Since from Qemu 2.7 virtio device > > > use virtio-1 protocol, the zero copy code path

Re: [dpdk-dev] [PATCH] vhost: fix dequeue zero copy not work with virtio1

2017-12-15 Thread Loftus, Ciara
> > Hi Junjie, > > On 12/13/2017 05:50 PM, Junjie Chen wrote: > > This fix dequeue zero copy can not work with Qemu > > version >= 2.7. Since from Qemu 2.7 virtio device > > use virtio-1 protocol, the zero copy code path > > forget to add offset to buffer address. > > > > Signed-off-by: Junjie Ch

Re: [dpdk-dev] [PATCH] vhost: fix dequeue zero copy not work with virtio1

2017-12-13 Thread Maxime Coquelin
Hi Junjie, On 12/13/2017 05:50 PM, Junjie Chen wrote: This fix dequeue zero copy can not work with Qemu version >= 2.7. Since from Qemu 2.7 virtio device use virtio-1 protocol, the zero copy code path forget to add offset to buffer address. Signed-off-by: Junjie Chen --- lib/librte_vhost/vir

Re: [dpdk-dev] [PATCH] vhost: fix dequeue zero copy

2017-04-19 Thread Yuanhan Liu
On Wed, Apr 19, 2017 at 01:26:01PM +0800, Yuanhan Liu wrote: > For zero copy mode, we need pin the mbuf to not let the underlaying PMD > driver (or the app) free the mbuf. Currently, only the heading mbuf is > pinned. However, the mbuf free function would try to free all mbufs > in the mbuf chain (