selftests/powerpc: Add a test of SEGV error behaviour

Thu Jan 18 00:30:11 AEDT 2018

On Tue, 2018-01-02 at 11:03:24 UTC, Michael Ellerman wrote:
> Add a test case of the error code reported when we take a SEGV on a
> mapped but inaccessible area. We broke this recently.
> 
> Based on a test case from John Sperbeck <jsperbeck at google.com>.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> Acked-by: John Sperbeck <jsperbeck at google.com>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/6ed361586b323e576fd5536078fe9f

cheers