Re: [PATCH 2/3] Add multi-node boot support

[Steffen Persvold]

On 10/27/2011 13:38, Ingo Molnar wrote:
> * Steffen Persvold<sp@xxxxxxxxxxxxx>  wrote:
>
> > > If it's absolutely needed then add a proper quirk handler instead
> > > of polluting the generic code.
> >
> > We wanted to reuse as much of the generic AMD code as possible, but
> > it's tricky because most of that code is based around a single HT
> > fabric design, whereas a NumaChip based systems consists of several
> > HT fabrics connected together thus you will have identical
> > NorthBridge IDs (0-7) etc. shared between all systems.
> >
> > How would you suggest we add a quirk handler for it ?
>
> So what we want on NumaChip systems is for the node ID in the BIOS
> SRAT table to override the node ID that is read from the hardware,
> right?

Correct. Our bootloader modifies the SRAT table with the new IDs, and 
initializes all processors with new real APIC IDs but we can't do 
anything with the initial APIC ID.

Cheers,
--
Steffen Persvold, Chief Architect NumaChip
Numascale AS - www.numascale.com
Tel: +47 92 49 25 54 Skype: spersvold
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/