[PATCH 2/8] signal: clean up __copy_siginfo_to_user32

[Christoph Hellwig]

On Fri, Apr 17, 2020 at 04:08:23PM -0500, Eric W. Biederman wrote:
> This bothers me because it makes all architectures pay for the sins of
> x32.  Further it starts burying the details of the what is happening in
> architecture specific helpers.  Hiding the fact that there is only
> one niche architecture that does anything weird.
> 
> I am very sensitive to hiding away signal handling details right now
> because way to much of the signal handling code got hidden in
> architecture specific files and was quite buggy because as a result.

I much prefer the unconditional flags over the crazy ifdef mess in
the current coe and your version.  Except for that and the rather
strange and confusing copy_siginfo_to_external32 name it pretty much
looks the same.