Hi Anatoly, Any last inputs on this one? Would like to prepare a patch for 19.05 and it would much effect the design.
Thursday, November 22, 2018 1:32 PM, Shahaf Shuler: > Subject: RE: [dpdk-dev] [RFC] ethdev: introduce DMA memory mapping for > external memory > [...] > > > , and we will have to rewrite current DMA mapping code to do > > >> mappings explicitly, rather than relying on callbacks mechanism. > > >> So, instead of e.g. VFIO mapping being performed via callback, we > > >> would instead iterate over each rte_device and call its respective > > >> DMA mapping function explicitly - for internal memory, but not for > > >> external. This > > >> *may* work, but i need to think it through a bit more :) > > >> > > >> This also still leaves a question of external unregistered memory - > > >> this is a wholly separate issue. > > >> > > >> TL;DR i'm tentatively OK with the proposal, but we need to work > > >> certain things out before we go too far along the path and find out > > >> that we've reached a dead end. > > > > > > Fully agree, this is why the RFC is for. > > > I think our biggest question is whether or not VFIO will behave OK > > > with > > double mapping or we need some tracking mechanism in DPDK. > > > > Yes, i will check this for VFIO and get back to you. > > Great thanks. ? > > > > > > > > >> > > >> -- > > >> Thanks, > > >> Anatoly > > > > > > -- > > Thanks, > > Anatoly
