Re: [dpdk-dev] [PATCH v3] doc: add driver limitation for vhost dequeue zero copy

2018-03-13 Thread Chen, Junjie J
Hi Jianfeng. > -Original Message- > From: Tan, Jianfeng > Sent: Monday, March 12, 2018 11:15 AM > To: Chen, Junjie J ; y...@fridaylinux.org; > maxime.coqu...@redhat.com > Cc: dev@dpdk.org > Subject: Re: [PATCH v3] doc: add driver limitation for vhost dequeue zero copy > > > > On 3/9/201

Re: [dpdk-dev] [PATCH v3] doc: add driver limitation for vhost dequeue zero copy

2018-03-11 Thread Tan, Jianfeng
On 3/9/2018 6:07 PM, Junjie Chen wrote: In vhost-switch example, when binding nic to vfio-pci with iommu enabled, dequeue zero copy cannot work in VM2NIC mode due to no iommu dma mapping is setup for guest memory currently. Signed-off-by: Junjie Chen --- Changes in V3: - update limitation to

[dpdk-dev] [PATCH v3] doc: add driver limitation for vhost dequeue zero copy

2018-03-08 Thread Junjie Chen
In vhost-switch example, when binding nic to vfio-pci with iommu enabled, dequeue zero copy cannot work in VM2NIC mode due to no iommu dma mapping is setup for guest memory currently. Signed-off-by: Junjie Chen --- Changes in V3: - update limitation to iommu Changes in V2: - add doc in vhost lib