Date: Thu, 07 Dec 2000 21:42:31 -0800 From: Mike Smith <msmith@freebsd.org> To: smp@FreeBSD.ORG Subject: Re: Netgraph and SMP Message-ID: <200012080542.eB85gVN00523@mass.osd.bsdi.com> In-Reply-To: Your message of "Thu, 07 Dec 2000 21:33:27 PST." <200012080533.eB85XRN00458@mass.osd.bsdi.com>
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> > What happens if you write to a page that's marked non-cachable
> > on the CPU on which you are running, but cacheable on another
> > CPU? Does it do the right thing, and update the cache on the
> > caching CPU?
>
> Er, what are you smoking Terry? You never 'update' the cache on another
> processor; the other processor snoops your cache/memory activity and
> invalidates its own cache based on your broadcasts.
I should have added "if you're lucky" to this. Some platforms don't even
go that far.
--
... 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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