Date: Thu, 18 Jan 2001 14:46:57 -0800 From: Mike Smith <msmith@freebsd.org> To: Brooks Davis <brooks@one-eyed-alien.net> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: SMP & APM (was Re: SMP & signal 11) Message-ID: <200101182246.f0IMkvQ01626@mass.osd.bsdi.com> In-Reply-To: Your message of "Thu, 18 Jan 2001 14:23:06 PST." <20010118142306.B7247@Odin.AC.HMC.Edu>
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> On Thu, Jan 18, 2001 at 01:41:02PM -0800, Mike Smith wrote:
> > It's not supported, no. Having said that, it's theoretically *meant* to
> > work, but I suspect that there are unconsidered issues which mean that
> > APM and SMP just aren't going to mix.
>
> I could swear I saw posts a year or so ago that SMP and APM won't ever
> get along due to BIOS code that isn't SMP safe.
The issue is a bit more complicated than that, but basically there's a
lot of APM stuff that you can't safely do in MP mode, yes. I recall a
commit which enabled a limited, assumed-OK subset of APM for SMP systems,
but I don't remember whether it was in 4.x or 5.x.
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
V I C T O R Y N O T V E N G E A N C E
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