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Description of problem:

Currently CPU defs are part of /etc/qemu/target-x86_64.conf configuration file, which has a number of problems

- it's not loaded when -nodefconfig option is given, which makes the CPU definitions useless for libvirt
- it is asking to be edited by users
- it can't always be automatically replaced by a new version when upgrading qemu-kvm

It's desired to move the CPU definitions to some file(s) in /usr/share/ from where they could be unconditionally loaded. This will also allow for easy future updates of the definitions.

In other words, the following command should list all the new CPU models:

/usr/libexec/qemu-kvm -nodefconfig -cpu ?

Test with qemu-kvm-0.12.1.2-2.104.el6.x86_64, he following command should list all the new CPU models, so this bug has been fixed.
# /usr/libexec/qemu-kvm -nodefconfig -cpu ?
x86       Opteron_G3
x86       Opteron_G2
x86       Opteron_G1
x86          Nehalem
x86           Penryn
x86           Conroe
x86           [n270]
x86         [athlon]
x86       [pentium3]
x86       [pentium2]
x86        [pentium]
x86            [486]
x86        [coreduo]
x86         [qemu32]
x86          [kvm64]
x86       [core2duo]
x86         [phenom]
x86         [qemu64]

Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.