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Re: [update] [patch] linux: Cache coherency fixes

To: Ralf Baechle <ralf@oss.sgi.com>
Subject: Re: [update] [patch] linux: Cache coherency fixes
From: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Date: Thu, 1 Aug 2002 19:06:49 +0200
Cc: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>, linux-mips@fnet.fr, linux-mips@oss.sgi.com
In-reply-to: <20020801184929.B22824@dea.linux-mips.net>
References: <20020801152500.A31808@dea.linux-mips.net> <Pine.GSO.3.96.1020801173504.8256H-100000@delta.ds2.pg.gda.pl> <20020801184929.B22824@dea.linux-mips.net>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.4i
Ralf Baechle wrote:
[snip]
> Back in time I prefered CONFIG_NONCOHERENT_IO over CONFIG_COHERENT_IO
> because the noncoherent case needs additional code and in general I'm
> trying to reduce the number of the #if !defined conditionals for easier
> readability.
> 
> The R10000 is our standard example why looking at the processor type doesn't
> work.  It's used in coherent mode in IP27 but in coherent mode but in
> coherent mode in IP28 or IP32.  Otoh I don't know of any system that

JFTR: non-coherent mode in IP28 or IP32.


Thiemo


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