Avi Kivity wrote:
> Carsten Otte wrote:
>> Hollis Blanchard wrote:
>> 
>>> These patches are based on Xiantao's work to create struct kvm_x86.
>>> Patch 1 replaces his "KVM Portability split: Splitting kvm
>>> structure (V2)", and patches 2 and 3 build on it.  
>>> 
>> Looks like a clean approach with to to_kvm_x86 macro. Whole series:
>> Acked-by: Carsten Otte <[EMAIL PROTECTED]>
>> 
>> 
> 
> Well, I hate to say it, but the resulting code doesn't look too well
> (all the kvm_x86 variables), and it's entirely my fault as I
> recommended this approach.  Not like it was difficult to predict.
> 
> I'm thinking again of
> 
>     struct kvm {
>         struct kvm_arch a;
>         ...
>     }

Agree. The kvm_arch approach is natural, and easy to understand. I
prefer it here.

> Where each arch defines its own kvm_arch.  Now the changes look like a
> bunch of "kvm->blah" to "kvm->a.blah" conversions.

container_of approach has similar trobles, and has to use to_kvm_x86 to
translate "kvm" to "kvm_x86" for every arch-specific field access.

> IIRC a downside was mentioned that it is easier to cause a build
> failure for another arch now.

I can't figure out why it can cause more build failure.

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