Re: About Celeron processor memory barrier problem

Matthias Schniedermeyer
2000-12-24T00:08:23Z

> > I found that when I compiled the 2.4 kernel with the option
> > of Pentium III or Pentium 4 on a Celeron's PC, it could cause the
> > system hang at very beginning boot stage, and I found the problem
> > is cause by the fact that Intel Celeron doesn't have a real memory
> > barrier,but when you choose the Pentium III option, the kernel
> > assume the processor has a real memory barrier.
> > Here is a patch to fix it:
>
> No.
>
> The fix is to not lie to the configurator.
>
> A Celeron isn't a PIII, and you shouldn't tell the configure that it is.
>
> The whole point of being able to choose the CPU to optimize for is that we
> can optimize things at compile-time.

This is what 2.2.17 thinks about my Celeron 600MHz

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 6
cpu MHz : 601.374
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
pat pse36 mmx fxsr xmm
bogomips : 1199.31

Bis denn

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