On Fri, Jul 03, 2020 at 02:52:03PM +0200, Daniel Vetter wrote: > So maybe I'm just totally confused about the rdma model. I thought: > - you bind a pile of memory for various transactions, that might > happen whenever. Kernel driver doesn't have much if any insight into > when memory isn't needed anymore. I think in the rdma world that's > called registering memory, but not sure. Sure, but once registered the memory is able to be used at any moment with no visibilty from the kernel. Unlike GPU the transactions that trigger memory access do not go through the kernel - so there is no ability to interrupt a command flow and fiddle with mappings. Jason
