Re: i387/FPU init issues...

[H. Peter Anvin]

Ingo Molnar wrote:
> * H. Peter Anvin <hpa@xxxxxxxxx> wrote:
>
> > > This might also be caused by a calibration error. We've seen enough 
> > > of them already.
> > No doubt.  However, there is *something* ugly going on.
>
> i think a vital clue can be found in the original report:
>
> |  I am able to reproduce the issue consistently on my laptop using qemu 
> |  (which helped speed debugging a bit). I have also narrowed it down to 
> |  include/asm-x86/i387.h::__save_init_fpu in (32 bit version) - it dies 
> |  somewhere in calling the following line:
>
> so it might just be incorrect Qemu emulation of a PII's NOP instruction?
>
> (which btw. probably proves that Linux is the first OS to make 
> intelligent use of those instructions?)

Ah, yes, this is a Qemu bug, then.

And yes, it probably does mean exactly that :)

	-hpa
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