From: mikpe@csd.uu.se
To: Dave Jones <davej@codemonkey.org.uk>
Cc: LKML <linux-kernel@vger.kernel.org>, simon@mtds.com
Subject: Re: New: SSE2 enabled by default on Celeron (P4 based)
Date: Tue, 1 Apr 2003 17:30:43 +0200 [thread overview]
Message-ID: <16009.45219.834358.139761@gargle.gargle.HOWL> (raw)
In-Reply-To: <20030401151640.GB28635@suse.de>
Dave Jones writes:
> On Tue, Apr 01, 2003 at 04:53:57PM +0200, Mikael Pettersson wrote:
>
> > > Steps to reproduce: Compile kernel choosing *any* Celeron option
> > >
> > > /proc/cpuinfo:-
> > > processor : 0
> > > vendor_id : GenuineIntel
> > > cpu family : 6
> > > model : 11
> >
> > This is NOT a P4-based Celeron. It's a P6 Tualatin Celeron, and as such,
> > it does not support SSE2.
> >
> > This CPU needs a kernel configured for a Pentium III or less.
>
> The *any* part of the bug report doesn't make much sense.
> That indicates that we're doing the wrong thing on the Pentium
> III/Celeron option too.
I checked with 2.5.66. I couldn't find any bug. Plain "Celeron" can't
be chosen -- you have to specify processor generation, and SSE2 is
only set if PENTIUM4 is set. Downgrading from a P4 config to PIII
correctly removes SSE2.
/Mikael
prev parent reply other threads:[~2003-04-01 15:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-01 14:31 Martin J. Bligh
2003-04-01 14:53 ` Mikael Pettersson
2003-04-01 15:11 ` Simon White
2003-04-01 15:16 ` Dave Jones
2003-04-01 15:24 ` Simon White
2003-04-01 15:30 ` mikpe [this message]
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