Re: [Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration

[Avi Kivity]

Gleb Natapov wrote:
> > I think the right thing to do with this is introduce a kvm-cpu savevm  
> > that stores this information since it isn't relevant to TCG.  I think  
> > it's arguable whether you want instruction length there (can you get it  
> > reliably on SVM?).
> >
> >     
> We can't get it on SVM without instruction decoding, but it is not required
> on SVM. It is absolutely essential for soft interrupt/exception injection
> on VMX and has to be a part of migratable state.
>   

We need it in some neutral form so cross-vendor migration can work.

--
Do not meddle in the internals of kernels, for they are subtle and quick to 
panic.