[patch]:MC/MT enabling/identification for IA-64

Please find attached the patch that enables identification of multi-core
and multi-thread on IA-64 processors.  This patch adds 4 new  fields in
/proc/cpuinfo to clearly identify each logical execution unit.  Two new
data structures cpu_core_map and cpu_sibling_map are also implemented.
This information will be used in scheduler (and possibly by other kernel
components as well).  A new SAL call (SAL_PHYSICAL_ID_INFO) and a PAL
call (PAL_LOGICAL_TO_PHYSICAL) are also added for identification
purposes.

TBD items: Hot-plug of logical processors
Scheduler enhancements:  We will send out this patch in next few days.

Comments and feedback welcome.

Thanks, rohit

Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Rohit Seth <rohit.seth@intel.com>



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