Hi,
On 2019-01-20 10:15:53 -0500, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
> > HPPA doesn't hardware instructions for atomic ops other than
> > test-and-set IIRC.
>
> Indeed, the main reason why I'm interested in keeping this old dinosaur
> going at all is that it is so different from other platforms in terms
> of what we can assume about spinlocks and atomic ops. Keeps us honest.
FWIW, while that clearly is the policy right now, I quite doubt that
it's beneficial. It's not like there's going to be new hardware
platforms without at least cmpxchg / ll/sc support. So I'm not seeing
what not requiring them keeps us honest about.
Greetings,
Andres Freund
