Re: Max CPUs on x86_64 under 2.6.x

[Andi Kleen]

"Colin Coe" <colin@xxxxxxxxxx> writes:

> Hi all
>
> Why is the number of CPUs on the x86_64 architecture only 8 but under i386
> it is 255?
>
> I've searched the list archives and Google but can't find an answer.

Post 2.6.10 x86-64 will support more CPUs. 2.6.10 actually does too,
but the Kconfig hadn't been changed then. Previously there was an
8 CPU APIC driver limit, however it turned out later that it doesn't
apply to some Opteron machines.

-Andi
-
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/