I believe I've already replied to this; it does indeed appear to be a
BIOS bug. The 'reboot' loader command simply re-invokes the bootstrap
interrupt, it doesn't attempt a complete system restart. It seems that
some BIOSsen don't deal with this very well.
> this may be a BIOS/Mainboard issue, so I ask here
> before filling out a PR.
>
> When I reboot the system from the /boot/loader
> command line (with `reboot'), the system is
> being resetted, the kernel loads and starts,
> and when the FPU is being initialized the kernel
> traps.
>
> Can anyone reproduce this?
>
> At least this CPU seems to be affected:
>
> CPU: AMD-K6(tm) 3D processor (400.91-MHz 586-class CPU)
> Origin ÿAuthenticAMD" Id ðx58c Stepping ñ2
> Featuresÿ8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
> AMD Featuresÿ80000800<SYSCALL,3DNow!>
>
> Björn
>
> --
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>
>
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