From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by oss.sgi.com id ; Wed, 21 Feb 2001 19:24:19 -0800 Received: from gnyf.wheel.dk ([193.162.159.104]:45307 "EHLO gnyf.wheel.dk") by oss.sgi.com with ESMTP id ; Wed, 21 Feb 2001 19:24:04 -0800 Received: (from soren@localhost) by gnyf.wheel.dk (8.9.1/8.9.1) id EAA23129; Thu, 22 Feb 2001 04:23:59 +0100 (CET) Date: Thu, 22 Feb 2001 04:23:58 +0100 From: "Soren S. Jorvang" To: Ralf Baechle Cc: linux-mips@oss.sgi.com Subject: Re: R10000 SGI O2 Message-ID: <20010222042358.H22997@gnyf.wheel.dk> References: <3A895FF4.B627089E@geo.umnw.ethz.ch> <20010213190716.A29070@chem.unr.edu> <20010216175902.C2233@bacchus.dhis.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4us In-Reply-To: <20010216175902.C2233@bacchus.dhis.org>; from Ralf Baechle on Fri, Feb 16, 2001 at 05:59:02PM -0800 Sender: owner-linux-mips@oss.sgi.com Precedence: bulk Return-Path: X-Orcpt: rfc822;linux-mips-outgoing On Fri, Feb 16, 2001 at 05:59:02PM -0800, Ralf Baechle wrote: > > for r5k-based IP32 (O2) systems. r10k O2 suffers from the same > > cache-noncoherency problem as r10k I2 does, and to the best of my > > knowledge nobody has ever really tried to even boot one. > > > > Not to discourage you at all...there's just a lot of work to do. > > It's really hard work to do. R12000 O2s however should be much easier to > do; the processor feature which causes so much grief in the O2 can be > disabled there. Unfortunately, noone I have talked to seems to know how specifically to turn off speculative writes.. Does anyone on this list happen to know? -- Soren