lkml.org 
[lkml]   [1998]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.1.119 and Cyrix detection
On Thu, Sep 03, 1998 at 06:42:12PM -0400, Gregory McLean wrote:

> Yep 2.1.119 still fails to detect this cyrix chip properly.
>
> CPU 6x86MX PR 233+
> Calibrating delay loop... 156.88 BogoMIPS
> CPU: Cyrix 6x86MX 2.5x Core/Bus Clock stepping 2.6
>
> Ok the initial check gets it right (somewhat it gets the stepping wrong)
>
> then /proc/cpuinfo has the same incorrect info
> processor : 0
> cpu family : 4
> model : 6x86MX 2.5x Core/Bus Clock
> vendor_id : CyrixInstead
> stepping : 2.6
> ..
> cpuid level : -1
> wp : yes
> flags :
> bogomips : 156.88

What's wrong about this? You CPU does 2.5 x 66 MHz = 166 MHz -> you should
see about 165 BogoMips ...
CPUID seems to be off by default on your CPU, though I was believing 6x86MX
has it turned on by default. Strange. That's why you CPU family of 4.

> [gregm@tweetie gregm]$ uname -a
> Linux tweetie 2.1.119 #17 Thu Aug 27 22:09:07 EDT 1998 i486 unknown
> [gregm@tweetie gregm]$

And this is the consequence of cpu family == 4.

I remeber having read a posting, where somebody claimed that egcs optimizes
some routines for CPU recignition which causes the 6x86 not to be detected
correctly. Don't know if this is the case for you. I also remeber that it
only happened with kernels configured for 586 and 686. ?

--
Kurt Garloff, Dortmund
<K.Garloff@ping.de>
PGP key on http://student.physik.uni-dortmund.de/homepages/garloff

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/faq.html

\
 
 \ /
  Last update: 2005-03-22 13:44    [W:0.057 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site