tree ef28b91f1ac8c1c9f4244da9be1f994306ef4070
parent d12eb7e11cf30c30f639b2093735af2ac177830b
author Robin Holt <holt@sgi.com> 1131723343 -0600
committer Tony Luck <tony.luck@intel.com> 1131730649 -0800

[IA64] 4-level page tables

This patch introduces 4-level page tables to ia64.  I have run
some benchmarks and found nothing interesting.  Performance has
consistently fallen within the noise range.

It also introduces a config option (setting the default to 3
levels).  The config option prevents having 4 level page
tables with 64k base page size.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>