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Re: R10000 SGI O2

To: Ralf Baechle <>
Subject: Re: R10000 SGI O2
From: "Soren S. Jorvang" <>
Date: Thu, 22 Feb 2001 04:23:58 +0100
In-reply-to: <>; from Ralf Baechle on Fri, Feb 16, 2001 at 05:59:02PM -0800
References: <> <> <>
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?


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