| commit | bbb65d2d365efe9951290e61678dcf81ec60add4 | [log] [tgz] |
|---|---|---|
| author | Suresh Siddha <suresh.b.siddha@intel.com> | Sat Aug 23 17:47:10 2008 +0200 |
| committer | Ingo Molnar <mingo@elte.hu> | Sat Aug 23 17:47:10 2008 +0200 |
| tree | f3eacf1b1313d729e084064ed6dda5db64522bf4 | |
| parent | 87ce786ae5f24e336195805a9fc7428a6f922478 [diff] |
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>