On Fri, Dec 17, 2021 at 12:42 PM David Hildenbrand <david@xxxxxxxxxx> wrote: > > > Then somebody else modified that page, and you got exactly what you > > asked for - a COW event. The original R/O pin has the original page > > that it asked for, and can read it just fine. > > Where in the code did I ask for a COW event? I asked for a R/O pin, not > any kind of memory protection. Why didn't you ask for a shared pin, if that is what you want? We already support that. If you don't like the read-only pins, don't use them. It's that simple. Linus