RE: [RESEND RFC PATCH 4/5] mm/remote_mapping: use a pidfd to access memory belonging to unrelated process

From: Christian Brauner <redacted>

Reading this, it really doesn't feel like a clean API. I think it would be great if
you could investigate whether you can get a more flexible and cleaner design
on top of memfds as suggested elsewhere in the thread.

The API may be dirty, and that can be fixed. Any suggestion is appreciated.
But the implementation underneath has a whole other purpose than just sharing 
memory.

Doing a design on top of memfd will surely make some people happy.
Don't know what to say about replacing the QEMU allocator though.

Mircea