On Mon, Mar 16, 2020 at 10:04:58AM -0300, Jason Gunthorpe wrote: > > Ok. I had some cleanups like this based of older trees, but if you are > > active in this area I think I'll let you handle it. > > You once said you wanted to loose the weird pfn flags scheme, so > before putting hmm_range_fault in ODP I planned to do that. > > If you have your series someplace send me a URL and I'll look on it I have a local branch I just started hacking on, but it is rather broken based on various discussions we had. But for a basic one I'd suggest something like: - kill HMM_PFN_SPECIAL as it serves no purpose - split the ->pfns array into an input flags (optional) and an output pfn (mandtory) one, using new flags for the input side - replace the output flags/values indirection with a bunch of values encoded in the high bits of a u64, with the rest used for the pfn
