On Tue, Jan 24, 2017 at 07:49:10PM +0800, Peter Xu wrote: > On Tue, Jan 24, 2017 at 06:25:53PM +0800, Peter Xu wrote: > > This is v5 of vt-d vfio enablement series. > > > > Most of the changes in v5 is not functionally, but related to > > comments, error_report()s, debugging, squashing patches, etc. (which > > are confirmed changes in v4), besides a tiny tweak when unmapping a > > whole address space (please see below changelog). There are still > > discussions in v4 thread, we can just continue there (or here), and > > from this version I'll remove RFC tag. > > > > I didn't rebase to master since current master failed to build on my > > laptop (with a "vl.c/hax..." error), however this series should be > > okay to be applied cleanly upon it. > > Sorry I forgot to append the todo list (please help adding in in case > I missed anything): > > - don't need to notify IOTLB (psi/gsi/global) invalidations to devices > that with ATS enabled > - investigate when guest map page while mask contains existing mapped > pages (e.g. map 12k-16k first, then map 0-12k) > - coalesce unmap during page walk (currently, we send it once per > page) > - when do PSI for unmap, whether we can send one notify directly > instead of walking over the page table? > > Above does not contain those that are still during discussion. And, > some of the entries still need tests to further prove it's > feasibility. > > Thanks, > > -- peterx
While valid I don't think above need to block merging. -- MST
