Hi, This series introduces non-4K page size support. For some aarch64 distributions, the default page size is 64K, not 4K. Current erdma can not work correctly for these systems. There are two reasons: one is that the kernel driver passes the kernel's page size to HW, but HW always treats 4096 as the basic page size. The second reason is that the user space provider uses 4096 to map the doorbell space which is right for 4096 page size only. So, we fix these issues in this patchset: - #1 fixes the issue that put wrong value in CMD to HW if PAGE_SIZE is not 4096. - #2 returns the necessary information for userspace to call mmap. This commit requires changes in userspace provider. PR is [1]. Thanks, Cheng Xu [1] https://github.com/linux-rdma/rdma-core/pull/1313 Cheng Xu (2): RDMA/erdma: Use fixed hardware page size RDMA/erdma: Support larger page size with doorbell allocation drivers/infiniband/hw/erdma/erdma_hw.h | 4 ++ drivers/infiniband/hw/erdma/erdma_verbs.c | 57 +++++++++++------------ drivers/infiniband/hw/erdma/erdma_verbs.h | 5 +- include/uapi/rdma/erdma-abi.h | 5 +- 4 files changed, 36 insertions(+), 35 deletions(-) -- 2.27.0
