On 04/04/17 04:59 AM, Sagi Grimberg wrote: > We can never ever get here from an IO command, and that is a good thing > because it would have been broken if we did, regardless of what copy > method we use... Yes, I changed this mostly for admin commands. I did notice connect commands do end up reading from the p2mem and this patchset correctly switches it to iomemcpy. However, based on Cristoph's comment, I hope to make it more general such that iomem is hidden within sgls and any access will either be correct or create a warning. On 04/04/17 09:46 AM, Jason Gunthorpe wrote: > Transactions might not complete at the NVMe device before the CPU > processes the RDMA completion, however due to the PCI-E ordering rules > new TLPs directed to the NVMe will complete after the RMDA TLPs and > thus observe the new data. (eg order preserving) > > It would be very hard to use P2P if fabric ordering is not preserved.. Yes, my understanding is the same, the PCI-E ordering rules save us here. Thanks, Logan -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
