Hi Bart, On Thu, Jul 23, 2015 at 06:47:26AM -0700, Bart Van Assche wrote: > This statement might need some clarification. Are you aware that this memory > region is only used if the kernel module parameter register_always is zero ?
The way I read the driver it's also used if the driver doesn't support either FMR or FR (although no current in-tree IB driver falls into that category), or as fallback if memory registration fails for some reason. But given that rkeys are just 32-bit integers there also seems to be some risk that a peer could simply brute force it even if it's never sent out on the wire. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
