Re: Incorrect IPC advice for OpenBSD

On Wed, May 16, 2018 at 10:45 PM, Daniel Gustafsson <daniel(at)yesql(dot)se> wrote:

> The OpenBSD paragraph in the "Shared Memory and Semaphores” section seems
> to
> have been slightly incorrect since around 2002. The kern.ipc.shm_use_phys
> sysctl setting has never existed in OpenBSD (it is in NetBSD and FreeBSD)
> and
> SEMMAP is not a kernel configuration option. Further, there is no kernel
> config for locking shared memory into RAM so the whole paragraph is best
> removed it seems. I believe this is an artifact from FreeBSD and OpenBSD
> sharing a paragraph, which was split into separate ones a long time ago.
>
> The attached patch removes the above mentioned parts (confirmed with an
> OpenBSD
> developer). This should probably be backpatched to all supported versions
> as
> it’s been wrong for a long time.
>

Applied and backpatched. Thanks!

--
Magnus Hagander
Me: https://www.hagander.net/ <http://www.hagander.net/>
Work: https://www.redpill-linpro.com/ <http://www.redpill-linpro.com/>