shared memory problem on armel

[martinwguy]

>> Mapping the same shared memory twice in one process is stupid, anyway.
>> Just disable the test on armel and armhf.
>
> Correction: starting from ARMv7, this is supported.  So the test can be
> enabled for armhf (and arm64).

No, you have to test for the architecture being V7+, not for armhf.
That armhf in Debian is V7+ is a coincidence (or, rather, a political
choice, not a technical one).
For example, the armv6 armhf port for the Raspberry Pi in armhf/V6.

   M