On Tue, Jun 06, 2023 at 01:50:01PM +0800, Cheng Xu wrote: > 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 As a side note, there is no need to perform double not (!!...) when assigning to bool variables. Thanks > > 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 >
