Message-ID: <3F1B32E6.4020107@jmu.edu>
Date: Sun, 20 Jul 2003 20:25:10 -0400
From: "William M. Quarles" <quarlewm@jmu.edu>
Organization: James Madison University
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [Fwd: Re: Kernel 2.4 CPU Arch issues]
References: <3F1B25C2.8010403@jmu.edu> <1058745605.6299.4.camel@dhcp22.swansea.linux.org.uk>
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Alan Cox wrote:
> On Llu, 2003-07-21 at 00:29, William M. Quarles wrote:
> 
>>Well, you separated the Pentium and Pentium-MMX.  It's the exact same
>>difference between Pentium Pro and Pentium-II: MMX technology.  That's
>>the point.
> 
> 
> This makes no difference to the kernel. Splitting PPro would only make
> sense for one reason. The Pentium Pro needs store barriers on
> spin_unlock and friends, the PII and later do not. However if this was
> done you'd also want to check for PPro boots with a PII kernel and panic
> which isn't currently done
> 

Well, wouldn't changing the gcc -march option and/or adding -mcpu 
options for the various processors in the Makefile make a difference, as 
the patchfile suggests?

-- 
William M. Quarles

quarlewm@jmu.edu
wquarles@bucknell.edu
walrus@bellsouth.net

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