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SubjectRe: Freeze on FPU exception with Athlon
Markus Schoder wrote:

> My test program caused the exception (and the freeze)
> unintendedly in the return statement since the
> division was optimized away as Brian pointed out.

It's quite strange that I cannot seem to trigger the
problem here on my machine.

> I know of another guy with the exact same CPU (Athlon
> Thunderbird 900MHz) and mainboard (ABIT KT7-RAID) who
> has the same problem.
>
> I use gcc 2.95.2 to compile the kernel.

Makes me wonder whether it could be an issue with your
board (I have an Asus A7V) or with gcc 2.95-2 (I use
egcs-1.1.2).

> Note that cpuinfo shows model 4 whereas e.g. Brian had
> model 2 if that means anything.

Mine is a model 4 also, so if it's related to that, I
should probably see the problem here as well.

/proc/cpuinfo

processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 807.000213
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
features : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips : 1608.91

-Udo.
-
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