Reminder: non-mpsafetty drivers to be connected on Sunday

Poul-Henning Kamp phk at
Fri Aug 1 13:46:54 UTC 2008

In message <200808010901.39545.jhb at>, John Baldwin writes:
>On Friday 01 August 2008 08:53:18 am Poul-Henning Kamp wrote:

>> 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.

First there are close to 10 years of difference in how relevant
serial ports and ethernet interfaces are.

Second, I think we could have saved if we had done just that :-)


Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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