On Fri, May 19, 2023 at 12:54:30PM -0400, Dennis Dalessandro wrote: > From: Patrick Kelsey <pat.kelsey@xxxxxxxxxxxxxxxxxxxx> > > In order to handle user SDMA requests where the packet payload is to be > constructed from memory other than system memory, do user SDMA > page-pinning through the page-pinning interface. The page-pinning > interface lets the user SDMA code operate on user_sdma_iovec objects > without caring which type of memory that iovec's iov.iov_base points to. What is "other than system memory" memory?? Jason