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

[Avi Kivity]

Gleb Natapov wrote:

 

> > Maybe we should unexecute the software interrupt instruction on Intel  
> > and get the same effect.
> >
> >     
> We don't need to unexecute anything. We get exit with RIP pointing to
> the offending instruction. The right thing on VMX to do is to inject
> software interrupt with correct instruction length. Processor will do
> the rest. Remind me please why do we try to find problems where there is
> none? We will do right thing and fix migration code to do right thing.
>
>   

I don't want the migration protocol to encode vendor specific 
information. The architectural state is complicated enough, we don't 
want microarchitectural state as well.

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