On Tue, Jan 11, 2022 at 05:34:36AM +0000, lizhijian@xxxxxxxxxxx wrote: > Yes, that's true. that's because only pmem has ability to persist data. > So do you mean we don't need to prevent user to create/register a persistent > access flag to a non-pmem MR? it would be a bit confusing if so. Since these extensions seem to have a mode that is unrelated to persistent memory, I'm not sure it makes sense to link the two things. Jason