celeron-class misdetected as 486

celeron-class misdetected as 486

[Pavel Machek]

Hi!

In 2.4.0-test10, I get

pavel@bug:~$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 4
model           : 0
model name      : 486 DX-25/33
stepping        : 0
cache size      : 128 KB
fdiv_bug        : no
hlt_bug         : no
sep_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : no
cpuid level     : 3
wp              : yes
use_tsc         : no


.... that's wrong. Older kernels detect it correctly as:

May 10 21:39:04 bug kernel: Pentium-III serial number disabled.
May 10 21:39:04 bug kernel: CPU: Intel Celeron (Mendocino) stepping 0a

								Pavel
-- 
I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org
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Re: celeron-class misdetected as 486

[davej]

Pavel Machek wrote..

> pavel@bug:~$ cat /proc/cpuinfo
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 4
                    ^^^
Since when were there family 4 Celerons ?

> model           : 0
> model name      : 486 DX-25/33
> stepping        : 0
> cache size      : 128 KB

Though a 486 with 128K cache is also unlikely.
(Although some of the wierd overdrives had such added fun iirc)

>.... that's wrong. Older kernels detect it correctly as:
>May 10 21:39:04 bug kernel: Pentium-III serial number disabled.
>May 10 21:39:04 bug kernel: CPU: Intel Celeron (Mendocino) stepping 0a

Which older kernel detected this ?

This is really bizarre, as there are cpuid capable 486s with the
family/vendor IDs reported above. I do hope we don't have to add
more cachesize checking. That part of setup.c is ugly enough
already.

Can you open up and find out if it really is a Celeron in that box
before such code gets added ?

regards,

Dave.

-- 
| Dave Jones <davej@suse.de>  http://www.suse.de/~davej
| SuSE Labs

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