On Thu, Jul 09, 2015 at 11:01:42AM -0600, Jason Gunthorpe wrote: > To your point in another message, I'd say, as long as the new API > supports FRMR at full speed with no performance penalty we are > good. If the other variants out there take a performance hit, then I > think that is OK. As you say, they are on the way out, we just need to > make sure that ULPs continue to work with FMR with the new API so > legacy cards don't completely break.
I think what we need to support for now is FRMR as the primary target, and FMR as a secondard. A few in-kernel drivers support physical registrations, but it's always been clear that they've been a bad idea, and the current discussion reconfirms that again. So a FRMR-like API that allows to use FMRs underneath might be a good start. If the imput to that API are S/G lists as in my suggestion we'll get indirect registration support almost for free. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
