On Wed, 26 Mar 2008, Mike Travis wrote:

quoted text
> I guess the main effect is that "MAXSMP" represents what's really
> usable for an architecture based on other factors.  The limit of
> NODES_SHIFT = 15 is that it's represented in some places as a signed
> 16-bit value, so 15 is the hard limit without coding changes, not
> an architecture limit.

NODES_SHIFT also controls how many page flag bits are set aside for the 
node number. If you limit x86_64 to 512 nodes then lets keep this at 9.
--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/