[RFC v3 08/19] arch: um: add shim to trap to allow installing a fault catcher for tests

[Brendan Higgins]

On Thu, Nov 29, 2018 at 7:41 PM Luis Chamberlain <mcgrof at kernel.org> wrote:
>
> On Wed, Nov 28, 2018 at 11:36:25AM -0800, Brendan Higgins wrote:
> > +static void segv_run_catcher(jmp_buf *catcher, void *fault_addr)
> > +{
> > +     current->thread.fault_addr = fault_addr;
> > +     UML_LONGJMP(catcher, 1);
> > +}
>
> Some documentation about what this does exactly would be appreciated.
> With the goal it may be useful to others wanting to consider support
> for other archs -- if that actually ends up being desirable.

Yeah, I should. Should this go in the wrapper around the abort() hack?
Or do you think I should write some documentation on how KUnit works
under Documentation/ ?