On Fri, Feb 17, 2023 at 03:59:25PM +0500, Muhammad Usama Anjum wrote: > > But what if the user wants to do that during when you're tracing it using > > userfaultfd? Can it happen? > Sorry, I've not tested tracing. No worry. It's not a request to test tracing; it's more or less to make sure it works for you if it cannot trace a program that uses uffd. If it's not a problem to you, then it's not a problem to me either. And it's not anything special to async but in general to uffd. Thanks, -- Peter Xu