> From: Jason Gunthorpe > Sent: Monday, May 9, 2022 10:01 PM > > On Mon, May 09, 2022 at 04:01:52PM +1000, David Gibson wrote: > > > Which is why I'm suggesting that the base address be an optional > > request. DPDK *will* care about the size of the range, so it just > > requests that and gets told a base address. > > We've talked about a size of IOVA address space before, strictly as a > hint, to possible optimize page table layout, or something, and I'm > fine with that idea. But - we have no driver implementation today, so > I'm not sure what we can really do with this right now.. > > Kevin could Intel consume a hint on IOVA space and optimize the number > of IO page table levels? > It could, but not implemented now.
