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Re: [patch] linux 2.4.17: The second mb() rework (final)

To: "Kevin D. Kissell" <kevink@mips.com>
Subject: Re: [patch] linux 2.4.17: The second mb() rework (final)
From: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Date: Fri, 15 Feb 2002 13:11:15 +0100 (MET)
Cc: Atsushi Nemoto <nemoto@toshiba-tops.co.jp>, mdharm@momenco.com, ralf@uni-koblenz.de, linux-mips@fnet.fr, linux-mips@oss.sgi.com
In-reply-to: <006e01c1b606$27b1b060$0deca8c0@Ulysses>
Organization: Technical University of Gdansk
Sender: owner-linux-mips@oss.sgi.com
On Fri, 15 Feb 2002, Kevin D. Kissell wrote:

> So I think that the Linux code was perfectly correct in considering
> the TX39 to be without SYNC, just as a Vr4101 must be
> consdered to be without LL/SC.  They decode the instructions,
> but they don't actually implement them as specified.

 The code is not correct if "bc0f" is needed to be sure a write-back
happened.  If that is the case, the processors need their own wbflush() 
implementation like R2k/R3k configurations in older DECstations. 

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +


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