Re: [dpdk-dev] [RFC 1/2] vhost: populate guest memory for DMA-accelerated vhost-user

2019-12-16 Thread Maxime Coquelin
On 9/26/19 4:26 PM, Jiayu Hu wrote: > DMA engines, like I/OAT, are efficient in moving large data > within memory. Offloading large copies in vhost side to DMA > engines can save precious CPU cycles and improve vhost > performance. > > However, using the DMA engine requires to populate guest's

[dpdk-dev] [RFC 1/2] vhost: populate guest memory for DMA-accelerated vhost-user

2019-09-26 Thread Jiayu Hu
DMA engines, like I/OAT, are efficient in moving large data within memory. Offloading large copies in vhost side to DMA engines can save precious CPU cycles and improve vhost performance. However, using the DMA engine requires to populate guest's memory. This patch is to enable DMA-accelerated vho