Re: [PATCH] hw/i386/cpu: remove default_cpu_version and simplify

[Zhao Liu]

> Had a conversation with Igor offline. CPU_VERSION_LATEST does not work since 
> it’s a moving target. Therefore for a specific machine, what version of cpu 
> model will be chosen will depend on what is latest and this will change with 
> time. It can break guests that stick to a single cpu model.
> 
> One way to fix this would be to keep a fixed mapping between cpu model and 
> machine versions. However, it will be a nightmare to maintain such mappings.

Thanks Ani!

The commit ad18392 also mentioned the plan to move to CPU_VERSION_LATEST.

Because previsou commits have repeatedly mentioned the plan to move to
CPU_VERSION_LATEST (not only the commit dcafd1ef0af227 you referred, but
also the commit ad18392), I think it's necessary to include the
termination of this plan (i.e., your explanation of why you are no longer
attempting to move to CPU_VERSION_LATEST) in the commit message.

This way, the history regarding default_cpu_version will be easier to
search, and it effectively puts an end to the previous plan.

Thanks,
Zhao