Messages in this thread | | | Date | Sat, 3 May 2008 22:07:02 +0200 | From | Mikael Pettersson <> | Subject | Re: i387/FPU init issues... |
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H. Peter Anvin writes: > jamal wrote: > > > > Indeed it does - thanks. > > > >> Please provide > >> also output of /proc/cpuinfo. > > > > mambo:~# cat /proc/cpuinfo > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 6 > > model : 3 > > model name : Pentium II (Klamath) > > stepping : 3 > > cpu MHz : 1063.771 > > cache size : 128 KB > > fdiv_bug : no > > hlt_bug : no > > f00f_bug : no > > coma_bug : no > > fpu : yes > > fpu_exception : yes > > cpuid level : 2 > > wp : yes > > flags : fpu de pse tsc msr pae mce cx8 sep pge cmov mmx fxsr > > sse sse2 > > bogomips : 2160.92 > > clflush size : 32 > > power management: > > > > This is very odd. > > Could you try running the attached C program on this processor and > report the result? (Binary included for convenience.) > > Arjan: this seems to directly contradict the Intel documentation. Do > you have any way to find out what the deal is with this?
hpa's p6nops test program works fine here on both a PII (family 6 model 3) and a Pentium Pro (family 6 model 1 stepping 9).
I'm noticing another anomaly in jamal's /proc/cpuinfo above: since when can a PII have sse and sse2? As far as I recall, it was the PIII that added sse, and sse2 came with the P4.
/Mikael
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