On 04/06/2013 11:37, Or Gerlitz wrote: > On 04/06/2013 04:24, Jeff Squyres (jsquyres) wrote: >> On May 29, 2013, at 1:53 AM, Or Gerlitz <or.gerl...@gmail.com> wrote: >> >>> Have you looked on ODP? see >>> https://www.openfabrics.org/resources/document-downloads/presentations/doc_download/568-on-demand-paging-for-user-space-networking.html >>> >> >> Is the idea behind ODP that, at the beginning of time, you register >> the entire memory space (i.e., NULL to 2^64) and then never worry >> about registered memory? >>
We wish to get there eventually. In our current implementation you still have to register an on-demand memory region explicitly. The difference between a regular memory region is that the pages in the region aren't pinned. > > Adding Haggai from the team that works on ODP. Haggai, Jeff also made a > comment over this thread http://marc.info/?t=136976347600006&r=1&w=2 > that a limitation of a max of 2 concurrent page faults seems fairly > significant which you might want to address too. We chose to support only 2 concurrent page faults per QP since this allows us to maintain order between the QP's operations and the user-space code using it. Regards, Haggai -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
