[RFC] ptrace: add generic SET_SYSCALL request

[Arnd Bergmann]

On Friday 07 November 2014 13:11:30 Will Deacon wrote:
> 
> > It's not that I care strongly about the interface, my main point is
> > that the changelog doesn't describe why one interface was used instead
> > the other.
> 
> I suspect the current approach was taken because it follows the same scheme
> as 32-bit ARM. If both methods are sufficient (Kees would have a better idea
> than me on that), then I don't have a strong preference.

Using the regset would probably address Oleg's comment, and would keep the
implementation architecture specific. You could even share the NT_S390_SYSTEM_CALL
number, but I don't know if there any downsides to doing that.

	Arnd