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Subjectcyrix detection 2.1.12*
I'm getting a teensy Cyrix detection thinglet introduced in 2.1.120

In 2.1.119 and below (Except a few versions when that whole
thing was re-written a while back) /proc/cpuinfo looks like:

processor : 0
vendor_id : CyrixInstead
cpu family : 5
model :
6x86L
model name : 6x86L 2x Core/Bus Clock
stepping : 4.2
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de cx8
bogomips : 149.50

Which is all correct, it's a 6x86L PR200+ (no MX) running
at 150MHz (2x 75MHz)

I just spent the evening backing out patches and compiling
and 2.1.119 is definetly good, and 2.1.120, pre-2.1.121-1, and
"real" 2.1.121 do this:

processor : 0
vendor_id : CyrixInstead
cpu family : 5
model : 49
model name : 6x86L 2x Core/Bus Clock
stepping : 4.2
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de cx8
bogomips : 119.60


The boot messages are normal in all cases (not counting
the bogomips, which matches the /proc/cpuinfo):
...
Linux version 2.1.121 (root@toolz) (gcc version 2.8.1) #9 Fri Sep 11 22:39:22
EDT 1998
Console: colour VGA+
80x25
Calibrating delay loop... 119.60
BogoMIPS
Memory: 63180k/65536k available (856k kernel code, 404k reserved, 1052k data,
44k init)
Checking if this processor honours the WP bit even in supervisor mode...
Ok.
CPU: Cyrix 6x86L 2x Core/Bus Clock stepping
4.2
Checking 386/387 coupling... OK, FPU using exception 16 error
reporting.
Checking 'hlt' instruction...
OK.
...


uname also looks normal:

/ext/src/linux-2.1.121 # uname -a
Linux toolz 2.1.121 #9 Fri Sep 11 22:39:22 EDT 1998 i586 CyrixInstead


No "real" symptoms noticed. All the compiles went fine, X and pppd seem
normal.

All test compiles were gcc 2.8.1 -O2 -m486 on a RedHat 5.0 system.

ALthough I *am* currently running 2.1.121 compiled with
gcc-2.8.1 -O9 -mpentium on redhat 5.0 and
pgcc -09 -mpentium on Stampede (AMDk6233, cpuinfo unnoticed untill monday)
so far so good. ( I know it's silly, and any extra "snappiness" is probably
all in my head. I'm allowed. :) )

--

Brian~

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