Messages in this thread |  | | Date | Sat, 18 Nov 2000 19:22:30 +0100 (CET) | From | Markus Schoder <> | Subject | Re: Freeze on FPU exception with Athlon |
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--- Linus Torvalds <torvalds@transmeta.com> wrote: >
> If I'm right, the proper test-program should be > something like >
Your test program is indeed sufficient to trigger the freeze. Unfortunately the patch does not make a difference :(
My test program caused the exception (and the freeze) unintendedly in the return statement since the division was optimized away as Brian pointed out.
Some more data points:
SysRq is definitely not working after the freeze :( Judging from the processor temperature after rebooting the processor is very busy.
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.
I couldn't so far find out where the problem was introduced since the older 2.4.0-test kernels do not support the HPT370. I will recable the drive to the primary controller and try again.
I will also try to compile a non AMD specific kernel and see if that makes a difference. If just this 40GB drive would fsck faster :)
Note that cpuinfo shows model 4 whereas e.g. Brian had model 2 if that means anything.
/proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) Processor stepping : 2 cpu MHz : 900.000063 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 : 1795.69
-- Markus
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