Re: New: SSE2 enabled by default on Celeron (P4 based)

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