Re: [dpdk-dev] [PATCH v4] doc: add driver limitation for vhost dequeue zero copy

2018-04-11 Thread Maxime Coquelin
On 03/29/2018 02:14 PM, Maxime Coquelin wrote: On 03/14/2018 05:24 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: Ju

Re: [dpdk-dev] [PATCH v4] doc: add driver limitation for vhost dequeue zero copy

2018-03-29 Thread Maxime Coquelin
On 03/14/2018 05:24 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 Reviewed-by: Maxime Coquelin John,

Re: [dpdk-dev] [PATCH v4] doc: add driver limitation for vhost dequeue zero copy

2018-03-18 Thread Tan, Jianfeng
> -Original Message- > From: Chen, Junjie J > Sent: Thursday, March 15, 2018 12:24 AM > To: Tan, Jianfeng; maxime.coque...@redhat.com; y...@fridaylinux.org > Cc: dev@dpdk.org; Chen, Junjie J > Subject: [PATCH v4] doc: add driver limitation for vhost dequeue zero copy > > In vhost-switch

[dpdk-dev] [PATCH v4] doc: add driver limitation for vhost dequeue zero copy

2018-03-14 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 V4: - make words more accurate Changes in V3: - update limitation to io