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Re: c-r4k.c cleanup

To: Nigel Stephens <>
Subject: Re: c-r4k.c cleanup
From: Ralf Baechle <>
Date: Fri, 4 Feb 2005 15:58:03 +0100
Cc: Atsushi Nemoto <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <> <>
User-agent: Mutt/1.4.1i
On Fri, Feb 04, 2005 at 02:39:07PM +0000, Nigel Stephens wrote:

> The MIPS 24K family's caches are not physically indexed, but they do 
> have optional h/w assist to prevent aliases in certain cache 
> configurations. This optional feature is indicated by the read-only AR 
> (alias removed) flag being set - that's bit 16 in the CP0 Config7 register.

That's not a new feature in the MIPS world; the R10000 family introduced
that first and Linux knows how to make use of it.  So now I just need to
teach c-r4k.c to check the AR bit on the 24K.


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