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Subject: Re: Does FreeBSD suffer from the Intel RZ1000 IDE bug?
To: roberto@keltia.Freenix.FR (Ollivier Robert)
Date: Fri, 15 Sep 1995 00:32:17 -0700 (PDT)
Cc: sos@freebsd.org, jehamby@lightside.com, R.L.Hesketh@ukc.ac.uk,
        hackers@freebsd.org, questions@freebsd.org
In-Reply-To: <199509150643.IAA29470@keltia.Freenix.FR> from "Ollivier Robert" at Sep 15, 95 08:43:21 am
From: sos@freebsd.org
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In reply to Ollivier Robert who wrote:
> 
> It seems that sos@freebsd.org said:
> > And I know of the problem :) 
> > By the way there isn't much point in using DMA on the IDE interface
> > anyway, so I simply don't use it...
> 
> Less CPU load ?

Hmm, yes somewhat, but most systems these days suffers from cacheinvalidates
and what not when you use the Motherboard based DMA, it also has to deal
with the 16Mb problem, so I concluded that it simply wasn't worth the effort.


-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Soren Schmidt  (sos@FreeBSD.org | sos@login.dknet.dk)  FreeBSD Core Team
               So much code to hack -- so little time