On Mon, Apr 10, 2023 at 04:11:55AM -0700, Selvin Xavier wrote: > Enabling the low latency push in Gen P5 adapters for small > packets. This is supported only for the user space QPs. > Introduce new mmap flag for write combine buffers. > Allocate separate Write Combine pages from BAR when Low > latency push mode is enabled in HW. No new mmap flags. This looks like it is basically the same as mlx5, I expect you'll run into all the same issues and needs as mlx5 did. Follow the modern mlx5 design, add a new API to allocate one of these pages and have it return back the mmap cookie to use. Let userspace allocate as many as it needs. Jason
