lkml.org 
[lkml]   [2008]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] x86: Modify Kconfig to allow up to 4096 cpus
On Wed, 26 Mar 2008, Mike Travis wrote:

> 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.


\
 
 \ /
  Last update: 2008-03-26 20:21    [from the cache]
©2003-2011 Jasper Spaans