On Thu, Jun 01, 2023 at 02:15:59PM -0400, Dennis Dalessandro wrote: > On 6/1/23 1:45 PM, Jason Gunthorpe wrote: > > 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?? > > For instance dmabuff, or something new in the future. This is pre-req work to > make it more abstract and general purpose and design it in a way it probably > should have been in the first place. But why is there uapi components to this? And HFI doesn't support DMABUF? Jason
