Hi,

(at least) AMD CPUs feature extended family/model bits in CPUID leaf 
0000_0001|EAX. Refer to page 10 in:
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25481.pdf

Those bits are necessary to model newer AMD CPUs:
-cpu qemu64,family=15,model=65,stepping=3 or
-cpu qemu64,family=16,model=4,stepping=2

Attached patch introduces support for specifying those bits on the 
command line and passing them to the guest.
(Patch applies against qemu-svn and kvm-userspace)

Signed-off-by: Andre Przywara <andre.przywara@amd.com>

Regards,
Andre.

P.S. I heard of a way to propagate the host CPUID bits to the guest, 
like -cpu=host, but couldn't find any code. Did I miss something?

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 277-84917
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