Re: 256 apic id for amd64

[Andi Kleen]

On Thu, Jan 06, 2005 at 06:53:11PM -0800, YhLu wrote:
> static unsigned int phys_pkg_id(int index_msb)
> {
>         return hard_smp_processor_id() >> index_msb;
> }
> 
> In arch/x86_64/kernel/genapic_cluster.c
> 
> Should be changed to 
> 
> static unsigned int phys_pkg_id(int index_msb)
> {
>         /* physical apicid, so we need to substract offset */
>         return (hard_smp_processor_id() - boot_cpu_id) >> index_msb;
> }

Why? 

If you want a patch merged you need to supply some more explanation
please.

Also cc Suresh & James for comment.

-Andi

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