See "CPUID Specification" (AMD Publication #: 25481, Rev. 2.28, April 2008)
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Mark Langsdorf <mark.langsdorf@amd.com>
LKML-Reference: <20090409134710.GA8026@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>