Reminder: non-mpsafetty drivers to be connected on Sunday

John Baldwin jhb at
Fri Aug 1 13:13:44 UTC 2008

On Friday 01 August 2008 08:53:18 am Poul-Henning Kamp wrote:
> In message <20080801124845.GZ1359 at>, Peter Jeremy
> writes
> >On 2008-Aug-01 13:40:53 +0200, Ed Schouten <ed at> wrote:
> >>One of the most important things I forgot to mention: I've attached the
> >>patch I'm going to commit. Comments on the patch are very welcome!
> >
> >This patch just disconnects the majority of the serial drivers from
> >the build.  Whilst I support the aim of making the TTY subsystem
> >MPSAFE, as I've previously stated, IMO, just disconnecting everything
> >is not the way forward.
> I got a syntax error on this email Peter, didn't you mean to write:
> "Great work Ed, let me send you some patches"
> A MPSAFE tty subsystem is infinitely more important than any particular
> non-console tty driver.
> If FreeBSD should have digi(4) support in the future somebody should
> spend some quality with the driver, instead of stopping Ed from
> making much necessary progress.

On the other hand, we didn't throw out half the NIC drivers when we did the 
MPSAFE network stack locking either, we allowed for a transition that gave 
time for individual drivers to be locked.

John Baldwin

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