As far as I can tell from reading the Verbs spec the raison d'ĂȘtrefor protection domains is to allow associating MRs with different address spaces in userspace programs. Is there any good reason to have each kernel driver create it's own PDs instead of simply creating one per device and sticking it into the ib_device structure? -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html