From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Sat, 23 Aug 2008 15:47:10 +0000 (+0200)
Subject: x86: use cpuid vector 0xb when available for detecting cpu topology
X-Git-Tag: v2.6.28-rc1~711^2^2~44^2~1^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bbb65d2d365efe9951290e61678dcf81ec60add4;p=pandora-kernel.git

x86: use cpuid vector 0xb when available for detecting cpu topology

cpuid leaf 0xb provides extended topology enumeration. This interface provides
the 32-bit x2APIC id of the logical processor and it also provides a new
mechanism to detect SMT and core siblings (which provides increased
addressability).

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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