[jira] [Created] (CLOUDSTACK-4678) Add cpu model for kvm guest

["Wei Zhou (JIRA)" <ji...@apache.org>]

Wei Zhou created CLOUDSTACK-4678:
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             Summary: Add cpu model for kvm guest
                 Key: CLOUDSTACK-4678
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4678
             Project: CloudStack
          Issue Type: Improvement
      Security Level: Public (Anyone can view this level - this is the default.)
    Affects Versions: 4.2.0
            Reporter: Wei Zhou
             Fix For: 4.2.0


Add cpu model for kvm guest.
Now all the kvm guest's cpu model is 'QEMU Virtual CPU version xxx'. This will affect the activation of Windows OS and low performance. 
I add three mode for user to indicate the guest cpu model.

For the most part it will be sufficient for the host administrator to specify the guest CPU config in the per-host configuration file (/etc/cloudstack/agent/agent.properties). This will be achieved by introducing two new configuration parameters: 
guest.cpu.mode=custom|host-model|host-passthrough
guest.cpu.model=from /usr/share/libvirt/cpu_map.xml(only valid when guest.cpu.mode=custom)


This ticket is created for two existing commits:
Add cpu model for kvm guest
https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;a=commit;h=2903bb5fd9d59803980102854d11e33ebe56088b
add doc for kvm cpu model
https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;a=object;h=8d53887cec514e1eeed899e4d6b6465b02aa39a3


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