Date: Mon, 02 Dec 1996 14:23:53 -0700 From: Steve Passe <smp@csn.net> To: Terry Lambert <terry@lambert.org> Cc: ccsanady@friley216.res.iastate.edu, freebsd-smp@freefall.freebsd.org Subject: Re: cvs commit: sys/i386/include pmap.h Message-ID: <199612022123.OAA22855@clem.systemsix.com> In-Reply-To: Your message of "Mon, 02 Dec 1996 13:47:06 MST." <199612022047.NAA11277@phaeton.artisoft.com>
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> > Long term, I think I agree, I go back and forth on just what the model
> > ...
> [ ... expedient reasons ... ]
> > ...
>
> The main line code should be changed, regardless. It would definitely
> benefit from the changes, and the interrupt architectures for non-Intel
> machines dictate a similar change be made for porting in any case.
>
> I would like to see the change driven by the SMP requirements, since
> it would be much harder to go back and retrofit SMP if the changes
> only considered the porting requirements, and not the SMP.
>
> The SMP code integration is going to be A Big Deal. If you can fit
> some additional (good!) changes in under that umbrella, so much the
> better.
all valid points. I'm not arguing against this, only about when...
look at it from this point of view. Peter currently
merges SMP with -current every 4-8 weeks. At such a point in time we
could call SMP-current '-current' and the transition would be complete.
That is more or less how I see SMP getting into -current, with it being
several steps as I outlined previously. If we start doing all the admittedly
desirable changes as part of the merge process we will be burning much
too much energy staying in sync with -current while we do it.
I want:
minor changes to SMP-current \
+-- start necessary long term changes.
-current /
Not:
fix SMP-current, fix SMP-current, ... fix SMP-current \
+-- someday...
fix -current, fix -current, ... fix -current /
--
Steve Passe | powered by
smp@csn.net | FreeBSD
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