Avi Kivity wrote:
> This makes several tons of sense, but breaks backwards compatibility.  
> If I understand correctly, get/set was never used so this shouldn't matter?
> 
> I suggest reserving some space at the end of kvm_regs in case further 
> state needs to be added.
> 
> Please add a KVM_CAP_ entry to advertise the fixup.  This way userspace 
> can determine that it's compiling or running on an old kernel and error 
> out gracefully.

Hi Avi,

Here's an update version of this patch, which leaves some space for
future extensions in struct kvm_regs. The KVM_CAP is unnecessary as
GET/SET_REGS never worked on ia64.

Cheers,
Jes