Hi, This series adds a new doorbell allocation mechanism to meet the the isolation requirement for userspace applications. Two main change points in this patch set: One is that we extend the bar space for doorbell allocation, and the other one is that we associate QPs/CQs with the allocated doorbells for authorization. We also keep the original doorbell mechanism for compatibility, but only used under CAP_SYS_RAWIO to prevent non-privileged access, which suggested by Jason before. - #1 configures the current PAGE_SIZE to hardware, so that hardware can organize the mmio space properly. - #2~#3 implement the new doorbell allocation mechanism. - #4 refactors the doorbell allocation part to make code more simpler and cleaner. Thanks, Cheng Xu Cheng Xu (4): RDMA/erdma: Configure PAGE_SIZE to hardware RDMA/erdma: Allocate doorbell resources from hardware RDMA/erdma: Associate QPs/CQs with doorbells for authorization RDMA/erdma: Refactor the original doorbell allocation mechanism drivers/infiniband/hw/erdma/erdma.h | 16 +- drivers/infiniband/hw/erdma/erdma_hw.h | 64 ++++++-- drivers/infiniband/hw/erdma/erdma_main.c | 53 +++---- drivers/infiniband/hw/erdma/erdma_verbs.c | 178 +++++++++++++--------- drivers/infiniband/hw/erdma/erdma_verbs.h | 13 +- 5 files changed, 183 insertions(+), 141 deletions(-) -- 2.31.1
