[dpdk-dev] [PATCH v3] kni: add IOVA va support for kni

[Thomas Monjalon]

Hi,

16/04/2019 06:55, kirankumark at marvell.com:
> From: Kiran Kumar K <kirankumark at marvell.com>
> 
> With current KNI implementation kernel module will work only in
> IOVA=PA mode. This patch will add support for kernel module to work
> with IOVA=VA mode.
> 
> The idea is to get the physical address from iova address using
> api iommu_iova_to_phys. Using this API, we will get the physical
> address from iova address and later use phys_to_virt API to
> convert the physical address to kernel virtual address.
> 
> With this approach we have compared the performance with IOVA=PA
> and there is no difference observed. Seems like kernel is the
> overhead.
> 
> Signed-off-by: Kiran Kumar K <kirankumark at marvell.com>
> ---
> 
> V3 Changes:
> * Add new approach to work kni with IOVA=VA mode using
> iommu_iova_to_phys API.

Compilation test is failing:
http://mails.dpdk.org/archives/test-report/2019-April/080701.html