On 14.12.20 14:36, Jason Gunthorpe wrote: > On Sat, Dec 12, 2020 at 08:29:11AM +0100, David Hildenbrand wrote: > >>> Racing with another GUP in another thread is also not reasonable, so >>> failing to isolate can't be a failure >> >> Having VMs with multiple vfio containers is certainly realistic, and >> optimizing in user space to do vfio mappings concurrently doesn‘t >> sound too crazy to me. But I haven‘t checked if vfio common code >> already handles such concurrency. > > There is a lot more out there than vfio.. RDMA already does concurrent > pin_user_pages in real apps I actually misread your comment. I think we both agree that temporary isolation failures must not lead to a failure. -- Thanks, David / dhildenb
