Re: [RFC] POSIX personality

[Alan Cox]

> It seems to me that the biggest issue here is maintaining
> POSIX behavior without having to modify application source
> every time the flag set changes.

I don't think that is a big problem. Think about how it evolves over time

App calls pthread_foo   libpthreads/ngpt does all the work by emulation

	Add CLONE_somefoo

App calls pthread_foo	libpthreads/ngpt does all the work by emulation
			and doesnt set the flag

	New libpthreads

App calls pthread_foo	libpthreads/ngpt uses the kernel assists

The behaviour is good - it means that the new kernel/old library setup won't
break the emulation gunge by suddenely providing precise semantics itself