On Fri, Jul 24, 2015 at 05:11:04PM -0500, Steve Wise wrote: > By the way, just to be clear: If you use a FRWR, you by definition > only have one SGE entry as the result of the registration. So > regardless of what a device/protocol can do with the destination SGE > of an RDMA READ operation, if you use FRWR to register the > destination region, you need only 1 SGE in the RDMA READ WR. FRWR's have horrible restrictions on the scatterlist. To realize arbitrary scatterlists requires multiple MRs, and thus multiple SGE entries. The warning is for a reader who might be familiar with IB and think iWarp simply needs to have a MR wrapped around the memory and assume gaps/etc can be supported through a s/g list, like IB can. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
