From: Leon Romanovsky <leonro@xxxxxxxxxxxx> >From Yishai, This series exposes API to enable a dynamic allocation and management of a UAR which now becomes to be a regular uobject. Moving to that mode enables allocating a UAR only upon demand and drop the redundant static allocation of UARs upon context creation. In addition, it allows master and secondary processes that own the same command FD to allocate and manage UARs according to their needs, this can’t be achieved today. As part of this option, QP & CQ creation flows were adapted to support this dynamic UAR mode once asked by user space. Once this mode is asked by mlx5 user space driver on a given context, it will be mutual exclusive, means both the static and legacy dynamic modes for using UARs will be blocked. The legacy modes are supported for backward compatible reasons, looking forward we expect this new mode to be the default. Thanks Yishai Hadas (4): IB/mlx5: Expose UAR object and its alloc/destroy commands IB/mlx5: Extend CQ creation to get uar page index from user space IB/mlx5: Extend QP creation to get uar page index from user space IB/mlx5: Move to fully dynamic UAR mode once user space supports it drivers/infiniband/hw/mlx5/cq.c | 21 ++- drivers/infiniband/hw/mlx5/main.c | 185 ++++++++++++++++++++-- drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 + drivers/infiniband/hw/mlx5/qp.c | 33 ++-- include/linux/mlx5/driver.h | 1 + include/rdma/uverbs_ioctl.h | 2 +- include/uapi/rdma/mlx5-abi.h | 6 + include/uapi/rdma/mlx5_user_ioctl_cmds.h | 18 +++ include/uapi/rdma/mlx5_user_ioctl_verbs.h | 5 + 9 files changed, 246 insertions(+), 27 deletions(-) -- 2.24.1
