Re: booting SMP P6 kernel on P4 hangs.

[Alan Cox]

> On Wed, 1 Aug 2001, Arjan van de Ven wrote:
> 
> > Oh it is. And it's due to a recommendation Intel makes to bios writers. 
> > As a result, every P4 I've encountered shares this bug. Intel knows it's
> > an invalid MP table, but refuses to change the recommendation.
> 
>  Where's the recommendation?  We might work it around somehow. 
> 
>  Alternatively we may just disable the SMP mode if the bootstrap CPU's
> real ID contradits the one in the MP table. 

I think just disable SMP in that case. There are currently no SMP Pentium IV
boxes and perhaps Intel will have fixed it by the time SMP Pentium IV exists