Re: booting SMP P6 kernel on P4 hangs.

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Thu Aug 02 2001 - 07:30:53 EST


> 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
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