Re: [dpdk-dev] [PATCH v4] net/mlx5: control transmit doorbell register mapping

Hi, > -Original Message- > From: Viacheslav Ovsiienko > Sent: Friday, November 8, 2019 5:08 PM > To: dev@dpdk.org > Cc: Matan Azrad ; Raslan Darawsheh > ; Ori Kam ; > sta...@dpdk.org > Subject: [PATCH v4] net/mlx5: control transmit doorbell register mapping > > The rdma core library can m

[dpdk-dev] [PATCH v4] net/mlx5: control transmit doorbell register mapping

The rdma core library can map doorbell register in two ways, depending on the environment variable "MLX5_SHUT_UP_BF": - as regular cached memory, the variable is either missing or set to zero. This type of mapping may cause the significant doorbell register writing latency and requires e