Via C3 Assertion Failed

[Adam Lackorzynski]

On Wed Aug 17, 2005 at 18:35:23 +0200, Christoph Mueller wrote:
> Hello,
> 
> I tried to run the demo-CD on my laptop that has a Via C3 CPU.
> 
> The following error occured:
> 
> >Assertion failed: '!(*pte & INTEL_PTE_VALID)'
> >    in .../boot/ia32/boot_cpu.cc:450 in function (null) at 00300539
> 
> Some more info about the processor:
> 
> $ cat /proc/cpuinfo:
> processor       : 0
> vendor_id       : CentaurHauls
> cpu family      : 6
> model           : 7
> model name      : VIA Ezra
> stepping        : 8
> cpu MHz         : 798.007
> cache size      : 64 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 1
> wp              : yes
> flags           : fpu de tsc msr cx8 mtrr pge mmx 3dnow
> bogomips        : 1592.52
> 
> Is there a way to run DROPS on Via C3 or should i reinstall the energy-intensive Intel Pentium 3?

That was a bug in Fiasco which we fixed some time ago. The C3 has no 4MB
pages and the bootup code did not reserve enough space to map this
region with 4K pages only.
The Demo CD has not been updated since then, i.e. still contains the
issue. But I have updated the floppy disk image, maybe that's helpful in
some way.




Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/